Silicon-based materials are considered as the next generation anode to replace graphite due to their low cost and ultra-high theoretical capacity.However,significant volume expansion and contraction occur during charg...Silicon-based materials are considered as the next generation anode to replace graphite due to their low cost and ultra-high theoretical capacity.However,significant volume expansion and contraction occur during charging and discharging processes,leading to the instability of electrode structure and susceptibility to peeling and damage,limiting its application.Constructing controllable molecular artificial solid electrolyte interphase(CMASEI)is an effective approach to address the commercialization of silicon-based anode materials[1].Improving the performance of silicon-based anodes through CMASEI is a multifaceted outcome.展开更多
To investigate the impact of temporary structures on the mechanical behavior of shaped bridge towers during the construction process,the Dianbu River Special Bridge was selected as the engineering background.A finite ...To investigate the impact of temporary structures on the mechanical behavior of shaped bridge towers during the construction process,the Dianbu River Special Bridge was selected as the engineering background.A finite element model of the middle tower column during the construction stage was established using ABAQUS to analyze the effects of key parameters,including the angle and pretension of temporary cables,as well as the wall thickness and diameter of temporary diagonal braces.The study examines how these parameters influence the stresses at the towergirder consolidation.The results indicate that the angle of temporary cables significantly affects the tensile stresses at the tower-girder consolidation,while its impact on compressive stresses is minimal.Among all parameters,the pretension of temporary cables has the most pronounced effect on the stresses at the tower-girder consolidation.In contrast,the wall thickness of temporary diagonal braces has only a minor influence,whereas the diameter of temporary diagonal braces has an almost negligible impact.These findings provide valuable insights for optimizing the design and arrangement of temporary support structures in similar bridge construction projects.展开更多
This paper aims to address the problem of geometric state control of large-segment steel box girders in offshore hoisting during the construction of large-span bridges. First, the geometric state control indexes of a ...This paper aims to address the problem of geometric state control of large-segment steel box girders in offshore hoisting during the construction of large-span bridges. First, the geometric state control indexes of a large-segment steel box girder are determined, such as the manufacturing parameters of the top and bottom slabs, the width of the annular joint, and the support position. Second, the geometric state equations and state transfer matrixes of large-segment steel box girders under different conditions are deduced by taking the mileage and elevation of control points as basic state variables. In application of the geometric state transfer method in the construction control of the Hong Kong-Zhuhai-Macao Bridge, the width of the annular joint and the position parameters for the support of the large-segment steel box girder are predicted precisely. Moreover, the manufacturing parameters of the top and bottom slabs of the steel box girders are calculated reliably. The measured values show that the width of the annular joint is basically the same with the difference of less than 2 mm, the eccentricity of bridge support is less than 20 mm, and the elevation error of the bridge deck is within-10 mm to +15 mm, which meets the construction accuracy. Using the geometric state transfer method, the rapid and accurate installation of the Hong Kong-Zhuhai-Macao Bridge has been realized, demonstrating that the precise control of the geometric state of a steel box girder with ectopic installation and multi-state transition can be realized by using the geometric state transfer method.展开更多
To improve the quality of the Hong Kong–Zhuhai–Macao Bridge paving project,a new paving layer material,Guss-mastic asphalt(GMA),was proposed in this paper by combining the advantages of two types of cast asphalt mix...To improve the quality of the Hong Kong–Zhuhai–Macao Bridge paving project,a new paving layer material,Guss-mastic asphalt(GMA),was proposed in this paper by combining the advantages of two types of cast asphalt mixtures:mastic asphalt(MA)and Guss asphalt(GA).Based on the characteristics of GMA,to simulate its actual production process,this study developed a small-simulated cooker mixing equipment.Moreover,the flow degree,60C dynamic stability,and impact toughness were proposed to be used to evaluate the construction and ease,high temperature stability,and fatigue resistance of GMA cast asphalt mixtures,respectively.Moreover,the quality control standards for GMA paving materials by indoor tests,field trial mix GMA material performance tests,and accelerated loading tests were finalized.The study showed that the developed simulated cooker yielded consistent mixing results in the same working environment as the engineering cooker device.Increasing the coarse aggregate incorporation rate,coarsening the mastic epure(ME)gradation composition,and using a smaller oil to stone ratio can reduce the flowability of the GMA materials to varying degrees.The four-point bending fatigue life and impact toughness of the different GMA materials are correlated well.A mobility of<20 s,60C dynamic stability of 400–800 times/mm,15C impact toughness of400 N⋅mm,and cooker car mixing temperature control standard of 210C–230C form an appropriate control index system for the design and production of GMA cast asphalt mixtures.Simultaneously,accelerated loading tests verified the accuracy and reliability of the quality control index system that has been used in the GMA paving project of the Hong Kong–Zhuhai–Macao Bridge deck and has achieved good application results.展开更多
The working principle of radio remote controlling of construction machinery should be that signals of the radio wave from the transmitter obtained in the receiver were controlled and then changed into electronic analo...The working principle of radio remote controlling of construction machinery should be that signals of the radio wave from the transmitter obtained in the receiver were controlled and then changed into electronic analog or digital signals which can be used to drive different actuators and mechanisms of the vehicle.The vehicle could be acted by following the controlling instructions sent by the operator.The best operation mode of construction machinery is suitable not only to manual operating but also to remote controlling in the same vehicle.The design methods of the hydraulic system used for the radio remote controlling of construction machinery are discussed.The design methods of hydraulic circuits for the actuators controlled by solenoid on-off type valves,hydro-electronic multi-way proportional valves,closed loop proportional servo driver or three-way proportional reducing valves are discussed in detail (with real example).The design methods of the power shift transmission of electro-hydraulic controlling,the devices of braking and the directional streering are discussed in this paper.展开更多
The Sutong Yangtze River Bridge(short as Sutong Bridge)is now the largest span cable-stayed bridge in the world.The construction of the superstructure of the middle bridge covered several stages including erection of ...The Sutong Yangtze River Bridge(short as Sutong Bridge)is now the largest span cable-stayed bridge in the world.The construction of the superstructure of the middle bridge covered several stages including erection of the big block girders for the side span,assistant span and tower area,erection of standard girders and closure of the middle span.The big block girders were hoisted by a floating crane,and the standard girders were hoisted by a double crane system on the deck.The pushing assistant method was adopted for the middle span closure construction.Furthermore,key technologies and innovative methods used in the processes of girder erection and cable assemblage in all stages were expatiated systematically.An all-stage self-adaptive geometry control method was used in the construction process.By accurately controlling the unstressed dimensions and shape of all structural components in each step,and realization that the control system and the controlled system adapt to each other,the goal was to make control of the final line shape and inner force of the bridge structure achievable.Two solutions,including GPS based and total station based dynamic geometry monitoring systems,were used to resolve the measure problem under the wide-range of wind-induced vibrations in the long cantilever state.Finally,research on the wind-induced vibration of the superstructure during the construction period was executed.Buffeting response analysis to the longest single and double cantilever states were carried out.The analysis and evaluation of wind resistance safety of the main girders under the longest single cantilever state was made,and corresponding wind resistance measures were suggested.The as-built geometric error and cable force error were controlled in a required design range,and this whole technological achievement can be a benchmark for construction of other large span cable-stayed bridges in the future.展开更多
Project cost can control the input in construction project and improve economic benefits of construction enterprises,so it is an important section of construction engineering.Reasonable control and management of proje...Project cost can control the input in construction project and improve economic benefits of construction enterprises,so it is an important section of construction engineering.Reasonable control and management of project cost is the principle that building units must obey in the whole process of project,particularly in the construction stage,so it is extremely important to control and manage the project cost.This paper first analyzed possible causes for the unreasonable cost of construction projects,and put forward pertinent strategies for the control and management of construction project cost.展开更多
Hanping tunnel is a control project of national highway 310 Dahejia to Qingshui highway project.It needs to cross a 330kV high-voltage transmission line under the condition of small clear distance,which requires high ...Hanping tunnel is a control project of national highway 310 Dahejia to Qingshui highway project.It needs to cross a 330kV high-voltage transmission line under the condition of small clear distance,which requires high construction requirements.In view of the difficulties such as shallow buried depth of tunnel and small clear distance between tunnel and tower of high-voltage line,multiple excavation blasting method is adopted,and smooth blasting,charge quantity control and damping hole setting are comprehensively used to reduce the impact on the tower and structure of high-voltage line.In order to ensure the smooth progress of the project,the large-scale finite element analysis software is used to simulate the whole excavation project.The influence of the full-section method and the middle partition wall method(CD method)on the surrounding rock and the high-voltage electric tower is compared.It is found that the CD method can effectively control the displacement of the surrounding rock and the tower on it and the uneven settlement.展开更多
Bridge bearings are a small part of the whole bridge structure,but it can affect the corner of the bridge,and the stability and quality of the bridge deck,so the performance of the bridge bearing can directly determin...Bridge bearings are a small part of the whole bridge structure,but it can affect the corner of the bridge,and the stability and quality of the bridge deck,so the performance of the bridge bearing can directly determine the quality and lifespan of the entire bridge.The bridge bearing connects the upper and lower parts of the whole bridge.In order to improve the quality and structure of the whole bridge,the layout and selection of bridge bearings needs to be done well,the construction process needs to be closely monitored,and the whole process needs to be well-managed.The existing problems should be analyzed in detail and solved in time to ensure the quality of the bridge project.展开更多
Uniqueness of landscaping projects was analyzed,and cost was regarded as an important index evaluating performance of landscaping construction enterprises. Based on reviewing limitation of cost control on landscaping ...Uniqueness of landscaping projects was analyzed,and cost was regarded as an important index evaluating performance of landscaping construction enterprises. Based on reviewing limitation of cost control on landscaping construction enterprises,enhancing construction management,controlling cost reasonably,and reducing project cost were proposed as the foundation and core content of enterprise cost management,and also the key to successful project management.By combining with design practices,suggestions for enhancing construction management of landscaping project,controlling cost and improving profits were given.展开更多
Construction and civil engineering is an important aspect of our national economic and social development. At present, under the new economic development situation, China's civil engineering construction is facing...Construction and civil engineering is an important aspect of our national economic and social development. At present, under the new economic development situation, China's civil engineering construction is facing new challenges and opportunities. At the same time, with the continuous improvement of the level of science and technology, a large number of advanced technologies are also constantly infiltrating into the field of construction and civil engineering, which has greatly changed the structural mode of construction and civil engineering, and has significantly improved the efficiency and quality of its construction. Therefore, in order to truly ensure the benefits of building civil engineering and promote its continuous and stable development, it is necessary to strengthen the control of its technology in order to improve the quality of the whole building. Based on these problems, the paper gives some suggestions for future research.展开更多
In order to improve the construction quality and steadily promote the improvement in the level of the construction industry,this paper expounds BIM-based strategies for construction quality control.This paper first id...In order to improve the construction quality and steadily promote the improvement in the level of the construction industry,this paper expounds BIM-based strategies for construction quality control.This paper first identifies the factors affecting the construction quality,analyzes the advantages and value of the application of BIM in construction,and finally analyzes the scenario of applying BIM for future references.展开更多
Under the current background of rapid social and economic development in our country, the construction industry has made great progress. At the same time, people have more stringent requirements for the construction q...Under the current background of rapid social and economic development in our country, the construction industry has made great progress. At the same time, people have more stringent requirements for the construction quality of construction projects. Under such circumstances, it is necessary to effectively do a good job in project management and construction quality control, and focus on in-depth analysis of the current problems, and effectively deal with and deal with them, so as to ensure that the construction quality of construction projects can be significantly improved, laying the foundation for the safe and stable operation of the project. Based on this, this paper focuses on the importance of construction project management and construction quality control, as well as the problems existing in the process of quality control and corresponding strategies and other related content, hoping that the analysis in this paper can provide a reference for the construction project management to achieve good results.展开更多
With the gradual acceleration of the urbanization process,the construction industry has been developing rapidly.As the key link to ensure the quality and safety of the project,construction management and construction ...With the gradual acceleration of the urbanization process,the construction industry has been developing rapidly.As the key link to ensure the quality and safety of the project,construction management and construction quality control are of great significance to enhance the competitiveness of construction enterprises and realize sustainable development.In this paper,the effective strategy of construction management and the effective strategy of construction quality control will be discussed in depth,aiming at providing useful management and quality control strategies for construction enterprises.展开更多
At present, according to the specific situation of urban construction projects, many enterprises attach great importance to the construction quality in the operation process. In order to improve the construction quali...At present, according to the specific situation of urban construction projects, many enterprises attach great importance to the construction quality in the operation process. In order to improve the construction quality, they will formulate corresponding construction management system to optimize the project management and construction. With the continuous development of society, it is necessary to innovate the construction of projects, so as to promote the deepening reform of urban construction projects in our country and promote the all-round development of urban construction projects.展开更多
With the increasing number of construction projects in our country, the standardization and scientificalness of project management are gradually improving. In the process of project construction, project management is...With the increasing number of construction projects in our country, the standardization and scientificalness of project management are gradually improving. In the process of project construction, project management is related to project quality and project cost. The construction unit should pay attention to the project management, strengthen the control of the construction process, put forward targeted control countermeasures, optimize the project management effect, improve the overall construction quality of the project, and promote the sustainable development of the construction industry in our country. Based on this, this paper studies the construction process control in urban construction management for reference.展开更多
The raft construction of mass concrete foundation is a very important part in the process of engineering construction. Once the volume of concrete increases, the temperature difference between the inside and outside o...The raft construction of mass concrete foundation is a very important part in the process of engineering construction. Once the volume of concrete increases, the temperature difference between the inside and outside of the concrete will occur, which will cause cracks in the concrete, which will have a significant impact on the engineering. Therefore, this paper is based on the temperature principle of the engineering mass concrete foundation raft.展开更多
Quorum system is a preferable model to construct distributed access control architecture, but not all quorum system can satisfy the requirements of distributed access control architecture. Aiming at the dependable pro...Quorum system is a preferable model to construct distributed access control architecture, but not all quorum system can satisfy the requirements of distributed access control architecture. Aiming at the dependable problem of authorization server in distributed system and combining the requirements of access control, a set of criterions to select and evaluate quorum system is presented. The scheme and algorithm of constructing an authorization server system based on Paths quorum system are designed, and the integrated sys- tem performance under some servers attacked is fully analyzed. Role-based access control on the Web implemented by this scheme is introduced. Analysis shows that with certain node failure probability, the scheme not only has high dependability but also can satisfy the special requirements of distributed access control such as real-time, parallelism, and consistency of security policy.展开更多
In recent years, the promotion of social economy has made the market prosperous and created a good environment for the development of enterprises. Financial management began to change from the previous roles of reimbu...In recent years, the promotion of social economy has made the market prosperous and created a good environment for the development of enterprises. Financial management began to change from the previous roles of reimbursement and bookkeeping to financial management and participation in decision-making, which expanded the connotation and extension of financial work and made financial management control play a very important role in the process of financial work optimization. Based on this, it is of practical significance to further explore the construction of internal control in enterprise financial management. Based on the significance of building internal control in enterprise financial management, this paper discusses the shortcomings of current enterprise financial internal control construction, and puts forward relative suggestions, so that enterprises can master the economic development direction and industry characteristics, keep the enterprise internal control management system and financial risk prevention in line with the pace of the times, maintain the competitiveness of enterprises and obtain considerable development.展开更多
With the development of economic situation and the intensification of market competition, the construction of internal control is becoming more and more important to the enterprise itself. Under the new development ba...With the development of economic situation and the intensification of market competition, the construction of internal control is becoming more and more important to the enterprise itself. Under the new development background, enterprises must actively and effectively control all business management processes, especially internal control, and establish a sound internal control system to ensure higher economic efficiency. On this basis, this paper deeply analyzes the problems in the construction of internal control system at the present stage and discusses the effective countermeasures, which provides an effective reference for improving the quality of enterprise internal control.展开更多
基金supported by the Nanxun Scholars Program for Young Scholars of ZJWEU(No.RC2023021315)the start-up funding for Scientific Research for High-level Talents(No.88106324004)the National Natural Science Foundation of China(No.62304070).
文摘Silicon-based materials are considered as the next generation anode to replace graphite due to their low cost and ultra-high theoretical capacity.However,significant volume expansion and contraction occur during charging and discharging processes,leading to the instability of electrode structure and susceptibility to peeling and damage,limiting its application.Constructing controllable molecular artificial solid electrolyte interphase(CMASEI)is an effective approach to address the commercialization of silicon-based anode materials[1].Improving the performance of silicon-based anodes through CMASEI is a multifaceted outcome.
文摘To investigate the impact of temporary structures on the mechanical behavior of shaped bridge towers during the construction process,the Dianbu River Special Bridge was selected as the engineering background.A finite element model of the middle tower column during the construction stage was established using ABAQUS to analyze the effects of key parameters,including the angle and pretension of temporary cables,as well as the wall thickness and diameter of temporary diagonal braces.The study examines how these parameters influence the stresses at the towergirder consolidation.The results indicate that the angle of temporary cables significantly affects the tensile stresses at the tower-girder consolidation,while its impact on compressive stresses is minimal.Among all parameters,the pretension of temporary cables has the most pronounced effect on the stresses at the tower-girder consolidation.In contrast,the wall thickness of temporary diagonal braces has only a minor influence,whereas the diameter of temporary diagonal braces has an almost negligible impact.These findings provide valuable insights for optimizing the design and arrangement of temporary support structures in similar bridge construction projects.
基金Project supported by the Zhejiang Provincial Natural Science Foundation of China(No.LZ16E080001)the National Natural Science Foundation of China(Nos.51578496 and 51878603)。
文摘This paper aims to address the problem of geometric state control of large-segment steel box girders in offshore hoisting during the construction of large-span bridges. First, the geometric state control indexes of a large-segment steel box girder are determined, such as the manufacturing parameters of the top and bottom slabs, the width of the annular joint, and the support position. Second, the geometric state equations and state transfer matrixes of large-segment steel box girders under different conditions are deduced by taking the mileage and elevation of control points as basic state variables. In application of the geometric state transfer method in the construction control of the Hong Kong-Zhuhai-Macao Bridge, the width of the annular joint and the position parameters for the support of the large-segment steel box girder are predicted precisely. Moreover, the manufacturing parameters of the top and bottom slabs of the steel box girders are calculated reliably. The measured values show that the width of the annular joint is basically the same with the difference of less than 2 mm, the eccentricity of bridge support is less than 20 mm, and the elevation error of the bridge deck is within-10 mm to +15 mm, which meets the construction accuracy. Using the geometric state transfer method, the rapid and accurate installation of the Hong Kong-Zhuhai-Macao Bridge has been realized, demonstrating that the precise control of the geometric state of a steel box girder with ectopic installation and multi-state transition can be realized by using the geometric state transfer method.
文摘To improve the quality of the Hong Kong–Zhuhai–Macao Bridge paving project,a new paving layer material,Guss-mastic asphalt(GMA),was proposed in this paper by combining the advantages of two types of cast asphalt mixtures:mastic asphalt(MA)and Guss asphalt(GA).Based on the characteristics of GMA,to simulate its actual production process,this study developed a small-simulated cooker mixing equipment.Moreover,the flow degree,60C dynamic stability,and impact toughness were proposed to be used to evaluate the construction and ease,high temperature stability,and fatigue resistance of GMA cast asphalt mixtures,respectively.Moreover,the quality control standards for GMA paving materials by indoor tests,field trial mix GMA material performance tests,and accelerated loading tests were finalized.The study showed that the developed simulated cooker yielded consistent mixing results in the same working environment as the engineering cooker device.Increasing the coarse aggregate incorporation rate,coarsening the mastic epure(ME)gradation composition,and using a smaller oil to stone ratio can reduce the flowability of the GMA materials to varying degrees.The four-point bending fatigue life and impact toughness of the different GMA materials are correlated well.A mobility of<20 s,60C dynamic stability of 400–800 times/mm,15C impact toughness of400 N⋅mm,and cooker car mixing temperature control standard of 210C–230C form an appropriate control index system for the design and production of GMA cast asphalt mixtures.Simultaneously,accelerated loading tests verified the accuracy and reliability of the quality control index system that has been used in the GMA paving project of the Hong Kong–Zhuhai–Macao Bridge deck and has achieved good application results.
文摘The working principle of radio remote controlling of construction machinery should be that signals of the radio wave from the transmitter obtained in the receiver were controlled and then changed into electronic analog or digital signals which can be used to drive different actuators and mechanisms of the vehicle.The vehicle could be acted by following the controlling instructions sent by the operator.The best operation mode of construction machinery is suitable not only to manual operating but also to remote controlling in the same vehicle.The design methods of the hydraulic system used for the radio remote controlling of construction machinery are discussed.The design methods of hydraulic circuits for the actuators controlled by solenoid on-off type valves,hydro-electronic multi-way proportional valves,closed loop proportional servo driver or three-way proportional reducing valves are discussed in detail (with real example).The design methods of the power shift transmission of electro-hydraulic controlling,the devices of braking and the directional streering are discussed in this paper.
基金National Science and Technology Support Program of China(No.2006BAG04B03)
文摘The Sutong Yangtze River Bridge(short as Sutong Bridge)is now the largest span cable-stayed bridge in the world.The construction of the superstructure of the middle bridge covered several stages including erection of the big block girders for the side span,assistant span and tower area,erection of standard girders and closure of the middle span.The big block girders were hoisted by a floating crane,and the standard girders were hoisted by a double crane system on the deck.The pushing assistant method was adopted for the middle span closure construction.Furthermore,key technologies and innovative methods used in the processes of girder erection and cable assemblage in all stages were expatiated systematically.An all-stage self-adaptive geometry control method was used in the construction process.By accurately controlling the unstressed dimensions and shape of all structural components in each step,and realization that the control system and the controlled system adapt to each other,the goal was to make control of the final line shape and inner force of the bridge structure achievable.Two solutions,including GPS based and total station based dynamic geometry monitoring systems,were used to resolve the measure problem under the wide-range of wind-induced vibrations in the long cantilever state.Finally,research on the wind-induced vibration of the superstructure during the construction period was executed.Buffeting response analysis to the longest single and double cantilever states were carried out.The analysis and evaluation of wind resistance safety of the main girders under the longest single cantilever state was made,and corresponding wind resistance measures were suggested.The as-built geometric error and cable force error were controlled in a required design range,and this whole technological achievement can be a benchmark for construction of other large span cable-stayed bridges in the future.
文摘Project cost can control the input in construction project and improve economic benefits of construction enterprises,so it is an important section of construction engineering.Reasonable control and management of project cost is the principle that building units must obey in the whole process of project,particularly in the construction stage,so it is extremely important to control and manage the project cost.This paper first analyzed possible causes for the unreasonable cost of construction projects,and put forward pertinent strategies for the control and management of construction project cost.
基金National Key Research and Development Program(Research on Key Technologies for the Operation and Maintenance of Typical Urban Traffic Infrastructure Safety)(2017YFC0806000)Chinese Academy of Engineering Institute-Local Cooperation Project(2019-CQ-ZD-4)。
文摘Hanping tunnel is a control project of national highway 310 Dahejia to Qingshui highway project.It needs to cross a 330kV high-voltage transmission line under the condition of small clear distance,which requires high construction requirements.In view of the difficulties such as shallow buried depth of tunnel and small clear distance between tunnel and tower of high-voltage line,multiple excavation blasting method is adopted,and smooth blasting,charge quantity control and damping hole setting are comprehensively used to reduce the impact on the tower and structure of high-voltage line.In order to ensure the smooth progress of the project,the large-scale finite element analysis software is used to simulate the whole excavation project.The influence of the full-section method and the middle partition wall method(CD method)on the surrounding rock and the high-voltage electric tower is compared.It is found that the CD method can effectively control the displacement of the surrounding rock and the tower on it and the uneven settlement.
文摘Bridge bearings are a small part of the whole bridge structure,but it can affect the corner of the bridge,and the stability and quality of the bridge deck,so the performance of the bridge bearing can directly determine the quality and lifespan of the entire bridge.The bridge bearing connects the upper and lower parts of the whole bridge.In order to improve the quality and structure of the whole bridge,the layout and selection of bridge bearings needs to be done well,the construction process needs to be closely monitored,and the whole process needs to be well-managed.The existing problems should be analyzed in detail and solved in time to ensure the quality of the bridge project.
文摘Uniqueness of landscaping projects was analyzed,and cost was regarded as an important index evaluating performance of landscaping construction enterprises. Based on reviewing limitation of cost control on landscaping construction enterprises,enhancing construction management,controlling cost reasonably,and reducing project cost were proposed as the foundation and core content of enterprise cost management,and also the key to successful project management.By combining with design practices,suggestions for enhancing construction management of landscaping project,controlling cost and improving profits were given.
文摘Construction and civil engineering is an important aspect of our national economic and social development. At present, under the new economic development situation, China's civil engineering construction is facing new challenges and opportunities. At the same time, with the continuous improvement of the level of science and technology, a large number of advanced technologies are also constantly infiltrating into the field of construction and civil engineering, which has greatly changed the structural mode of construction and civil engineering, and has significantly improved the efficiency and quality of its construction. Therefore, in order to truly ensure the benefits of building civil engineering and promote its continuous and stable development, it is necessary to strengthen the control of its technology in order to improve the quality of the whole building. Based on these problems, the paper gives some suggestions for future research.
文摘In order to improve the construction quality and steadily promote the improvement in the level of the construction industry,this paper expounds BIM-based strategies for construction quality control.This paper first identifies the factors affecting the construction quality,analyzes the advantages and value of the application of BIM in construction,and finally analyzes the scenario of applying BIM for future references.
文摘Under the current background of rapid social and economic development in our country, the construction industry has made great progress. At the same time, people have more stringent requirements for the construction quality of construction projects. Under such circumstances, it is necessary to effectively do a good job in project management and construction quality control, and focus on in-depth analysis of the current problems, and effectively deal with and deal with them, so as to ensure that the construction quality of construction projects can be significantly improved, laying the foundation for the safe and stable operation of the project. Based on this, this paper focuses on the importance of construction project management and construction quality control, as well as the problems existing in the process of quality control and corresponding strategies and other related content, hoping that the analysis in this paper can provide a reference for the construction project management to achieve good results.
文摘With the gradual acceleration of the urbanization process,the construction industry has been developing rapidly.As the key link to ensure the quality and safety of the project,construction management and construction quality control are of great significance to enhance the competitiveness of construction enterprises and realize sustainable development.In this paper,the effective strategy of construction management and the effective strategy of construction quality control will be discussed in depth,aiming at providing useful management and quality control strategies for construction enterprises.
文摘At present, according to the specific situation of urban construction projects, many enterprises attach great importance to the construction quality in the operation process. In order to improve the construction quality, they will formulate corresponding construction management system to optimize the project management and construction. With the continuous development of society, it is necessary to innovate the construction of projects, so as to promote the deepening reform of urban construction projects in our country and promote the all-round development of urban construction projects.
文摘With the increasing number of construction projects in our country, the standardization and scientificalness of project management are gradually improving. In the process of project construction, project management is related to project quality and project cost. The construction unit should pay attention to the project management, strengthen the control of the construction process, put forward targeted control countermeasures, optimize the project management effect, improve the overall construction quality of the project, and promote the sustainable development of the construction industry in our country. Based on this, this paper studies the construction process control in urban construction management for reference.
文摘The raft construction of mass concrete foundation is a very important part in the process of engineering construction. Once the volume of concrete increases, the temperature difference between the inside and outside of the concrete will occur, which will cause cracks in the concrete, which will have a significant impact on the engineering. Therefore, this paper is based on the temperature principle of the engineering mass concrete foundation raft.
基金Supported by the National Natural Science Foundation of China (70771043, 60873225, 60773191)
文摘Quorum system is a preferable model to construct distributed access control architecture, but not all quorum system can satisfy the requirements of distributed access control architecture. Aiming at the dependable problem of authorization server in distributed system and combining the requirements of access control, a set of criterions to select and evaluate quorum system is presented. The scheme and algorithm of constructing an authorization server system based on Paths quorum system are designed, and the integrated sys- tem performance under some servers attacked is fully analyzed. Role-based access control on the Web implemented by this scheme is introduced. Analysis shows that with certain node failure probability, the scheme not only has high dependability but also can satisfy the special requirements of distributed access control such as real-time, parallelism, and consistency of security policy.
文摘In recent years, the promotion of social economy has made the market prosperous and created a good environment for the development of enterprises. Financial management began to change from the previous roles of reimbursement and bookkeeping to financial management and participation in decision-making, which expanded the connotation and extension of financial work and made financial management control play a very important role in the process of financial work optimization. Based on this, it is of practical significance to further explore the construction of internal control in enterprise financial management. Based on the significance of building internal control in enterprise financial management, this paper discusses the shortcomings of current enterprise financial internal control construction, and puts forward relative suggestions, so that enterprises can master the economic development direction and industry characteristics, keep the enterprise internal control management system and financial risk prevention in line with the pace of the times, maintain the competitiveness of enterprises and obtain considerable development.
文摘With the development of economic situation and the intensification of market competition, the construction of internal control is becoming more and more important to the enterprise itself. Under the new development background, enterprises must actively and effectively control all business management processes, especially internal control, and establish a sound internal control system to ensure higher economic efficiency. On this basis, this paper deeply analyzes the problems in the construction of internal control system at the present stage and discusses the effective countermeasures, which provides an effective reference for improving the quality of enterprise internal control.
