Green building construction typically incurs higher costs than conventional methods.To facilitate broader adoption by construction entities,cost optimization is essential.Firms must align with technological advancemen...Green building construction typically incurs higher costs than conventional methods.To facilitate broader adoption by construction entities,cost optimization is essential.Firms must align with technological advancements,judiciously apply emerging technologies,and ensure resource efficiency through context-specific strategies.Proactive and precise scheduling is critical to avert delays from unforeseen events.Additionally,construction units should enhance on-site safety training,promote mastery of innovative techniques,and foster environmental awareness among personnel.Finally,companies ought to capitalize on government incentives for green materials while adopting bulk procurement from local sources to minimize transportation costs and secure lower unit prices.展开更多
With the further development of urbanization,the conflicts between human beings and the nature has been gradually aggravated;it is urgent to establish balanced natural ecology in the process of urbanization,and harmon...With the further development of urbanization,the conflicts between human beings and the nature has been gradually aggravated;it is urgent to establish balanced natural ecology in the process of urbanization,and harmony between human beings and environment.This study took the ecological landscape project of Shanghai A20 Out Ring (Changning Section) for an example to research and rethink about the ecological construction in the process of urbanization.展开更多
A self-developed elasto-plastic finite element program was used to analyze the construction sequence of high rock slope's stabilization in a coal-coking plant, and the result was compared with that employing the u...A self-developed elasto-plastic finite element program was used to analyze the construction sequence of high rock slope's stabilization in a coal-coking plant, and the result was compared with that employing the ultimate equilibrium method. Based on the results of finite element analysis, the stress contour graphs and displacement vector graphs at different construction steps were obtained, and the behavior of the slope during stabilization construction process was analyzed quantitatively. Based on the analysis of safety factors of three different schemes of stabilization and two different construction schemes, the assessment of stability and bracing design of the construction process were performed. The results show that the original reinforcement design is improper; the stability of the rock slope is controlled by a developed structural plane, the stability factor after excavation is less than 1, and the free surface should be braced in time; for stability, the construction sequence should adopt that bracing follows excavation step by step up to down; the local slide occurred during the construction process agrees with the dangerous slide determined by the numerical analysis, which proves the validity and rationality of the adopted method.展开更多
Quality traceability plays an essential role in assembling and welding offshore platform blocks.The improvement of the welding quality traceability system is conducive to improving the durability of the offshore platf...Quality traceability plays an essential role in assembling and welding offshore platform blocks.The improvement of the welding quality traceability system is conducive to improving the durability of the offshore platform and the process level of the offshore industry.Currently,qualitymanagement remains in the era of primary information,and there is a lack of effective tracking and recording of welding quality data.When welding defects are encountered,it is difficult to rapidly and accurately determine the root cause of the problem from various complexities and scattered quality data.In this paper,a composite welding quality traceability model for offshore platform block construction process is proposed,it contains the quality early-warning method based on long short-term memory and quality data backtracking query optimization algorithm.By fulfilling the training of the early-warning model and the implementation of the query optimization algorithm,the quality traceability model has the ability to assist enterprises in realizing the rapid identification and positioning of quality problems.Furthermore,the model and the quality traceability algorithm are checked by cases in actual working conditions.Verification analyses suggest that the proposed early-warningmodel for welding quality and the algorithmfor optimizing backtracking requests are effective and can be applied to the actual construction process.展开更多
In order to improve the efficiency of EPS integral thermal insulation building design and optimize the construction process of insulation construction, this paper uses experiment parts and simulation form to design th...In order to improve the efficiency of EPS integral thermal insulation building design and optimize the construction process of insulation construction, this paper uses experiment parts and simulation form to design the thermal insulation construction process, and evaluates the effect of heat preservation. Based on the finite element theory this paper designs adding process of insulation material EPS in the thermal insulation layer, and establishes the radiation heat conduction model of EPS material, finally obtains the solid heat conduction equation. Finally this paper uses ANSYS software to do simulation on the strength and temperature of EPS construction, and evaluates the quality of construction works, which provides technical reference for the design of integrated thermal insulation buildings.展开更多
Over the years, China's economy has developed rapidly, which has also provided favorable conditions for the development of all walks of life. On this basis, the income level of our people has continuously improved...Over the years, China's economy has developed rapidly, which has also provided favorable conditions for the development of all walks of life. On this basis, the income level of our people has continuously improved, and the quality of life has also begun to continuously improve. More and more people begin to install HVAC systems in their homes. In order to better meet people's needs and actively respond to the national call for environmental protection, the relevant construction industry should pay attention to BIM technology and strive to achieve the goal of environmental protection and energy conservation through this technology. This paper makes an in-depth analysis on the energy-saving effect of BIM in the HVAC construction process, with a view to promoting the sustainable and healthy development of the construction industry.展开更多
At present, China's urbanization process is further accelerated, people also have more and more requirements for landscape architecture projects, in such a situation, it is necessary to do a more effective job in ...At present, China's urbanization process is further accelerated, people also have more and more requirements for landscape architecture projects, in such a situation, it is necessary to do a more effective job in landscape architecture construction, for the construction of various management work in the process of project construction should also be effectively strengthened, in the on-site construction link to further improve the management level, and then for the effective improvement of the quality of landscape architecture construction to provide the necessary guarantee. Combined with this situation, this paper explores the relevant contents of on-site management measures in the construction process of landscape architecture, hoping that the analysis of this paper can provide certain enlightenment for relevant practitioners, and then promote the quality of urbanization development to be more effectively improved.展开更多
In the process of carrying out construction projects, quality and safety should always be the core of development, so as to strengthen the protection of residents' lives and property safety. In this process, atten...In the process of carrying out construction projects, quality and safety should always be the core of development, so as to strengthen the protection of residents' lives and property safety. In this process, attention should be paid to the construction management and quality control. Meanwhile, scientific and perfect management measures should be adopted to improve the project quality, thus promoting the common development of economic and social benefits of construction enterprises and enhancing the overall level of market competition. In order to further realize the sustainable development of the project, it is necessary to strengthen the discussion on the quality control measures of the project construction so as to realize the stable development of the project.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
In the process of China's social and economic development, agriculture is the foundation of its development. At the same time, the "three rural" problem is also the key problem that needs to be solved ur...In the process of China's social and economic development, agriculture is the foundation of its development. At the same time, the "three rural" problem is also the key problem that needs to be solved urgently in China's socialist construction. Therefore, in order to further promote the development of rural agricultural economy and solve the problems of water shortage, relatively low income of farmers and low quality of agricultural water use caused by bad factors such as climate and region, we should pay more attention to the construction of farmland water conservancy projects. However, although the rural irrigation and water conservancy project has brought higher economic benefits to farmers and improved the overall yield of grain, all kinds of construction problems can not be ignored. It is necessary to continuously improve the construction of water conservancy project, so as to better improve the construction quality of rural irrigation and water conservancy project.展开更多
In this paper, 2201 and 2212 phases as the corresponding precursor of forming 2212 and 2223 phases are discussed,and the constructive process of unit cell of 2201 phase is ascertained by XRD and chemical kinetics me...In this paper, 2201 and 2212 phases as the corresponding precursor of forming 2212 and 2223 phases are discussed,and the constructive process of unit cell of 2201 phase is ascertained by XRD and chemical kinetics method. Subsequently, the process of 221展开更多
In recent years, under the influence of various favorable factors, China's construction engineering industry has developed in an all-round way. At the same time, it also intensifies the competition situation in th...In recent years, under the influence of various favorable factors, China's construction engineering industry has developed in an all-round way. At the same time, it also intensifies the competition situation in the whole industry. In the whole construction engineering field, it is very important to improve the overall rationalization and labeling of management work, which is also the core interest of the construction project and the important foundation to ensure the steady and healthy development of the construction unit. Industrial and civil buildings are referred to as civil buildings for short. In the process of organizing and carrying out construction work, civil engineering usually needs to use many different types of construction technology. The level of construction technology will often have a huge impact on the quality of civil engineering. Therefore, when organizing and implementing various construction work in practice, it is necessary to fully combine the actual situation to carry out the whole-process construction technology management on site to ensure the orderly and efficient development of various work.展开更多
[Objective] The research aimed to study winter operation process of the surface flow constructed wetland in ＂rianjin area. [Method] In view of climate characteristics in Tianjin, by the way of running under the ice, ...[Objective] The research aimed to study winter operation process of the surface flow constructed wetland in ＂rianjin area. [Method] In view of climate characteristics in Tianjin, by the way of running under the ice, winter operation experiment of the surface flow constructed wetland in Tianjin was conducted, with the expectation to get some useful process parameters to run such systems in North China in winter. [ Result] Although purification effect of the sewage by surface flow constructed wetland in winter was worse than that in other seasons （ average reduction of about 20%）, surface flow constructed wetland running under the ice was feasible in Tianjin area. When surface flow constructed wetland in North China ran under ice in winter, it was suggested that the outlet must be located in a low position to prevent to be completely frozen, and running water depth should not be less than 50 -60 cm. The hydraulic load could be raised on the basis of reflux, and hydraulic retention time should maintain less than 4 d to keep water-soil interface not freezing. Inlet water depth should be increased as much as possible to improve temperature in the system. V Conclusion1 The research could provide reference for promotion and application of the surface flow constructed wetland in North China.展开更多
The index system, code system, and weights of indexes are established to assess the effects of green construction. The index system consists of index level, factor level and sub-factor level. The analytic hierarchy pr...The index system, code system, and weights of indexes are established to assess the effects of green construction. The index system consists of index level, factor level and sub-factor level. The analytic hierarchy process is used to determine the weights of indexes, and the consistency test indicate that the weight assignment is reasonable. Using fuzzy synthetic judgment method, the assessment model is built, which includes factor set, weight set and conclusion set. An example is given to demonstrate the assessment procedures.展开更多
A newnumerical method based on vector form intrinsic finite element（VFIFE） is proposed to simulate the integral lifting process of steel structures. First, in order to verify the validity of the VFIFE method, taking...A newnumerical method based on vector form intrinsic finite element（VFIFE） is proposed to simulate the integral lifting process of steel structures. First, in order to verify the validity of the VFIFE method, taking the steel gallery between the integrated building and the attached building of Nanjing M obile Communication Buildings for example, the static analysis was carried out and the corresponding results were compared with the results achieved by the traditional finite element method. Then, according to the characteristics of dynamic construction of steel structure integral lifting, the tension cable element was employed to simulate the behavior of dynamic construction. The VFIFE method avoids the iterative solution of the stiffness matrix and the singularity problems. Therefore, it is simple to simulate the complete process of steel structure lifting construction.Finally, by using the VFIFE, the displacement and internal force time history curves of the steel structures under different lifting speeds are obtained. The results show that the lifting speed has influence on the lifting force, the internal force, and the displacement of the structure. In the case of normal lifting speed, the dynamic magnification factor of 1. 5 is safe and reasonable for practical application.展开更多
文摘Green building construction typically incurs higher costs than conventional methods.To facilitate broader adoption by construction entities,cost optimization is essential.Firms must align with technological advancements,judiciously apply emerging technologies,and ensure resource efficiency through context-specific strategies.Proactive and precise scheduling is critical to avert delays from unforeseen events.Additionally,construction units should enhance on-site safety training,promote mastery of innovative techniques,and foster environmental awareness among personnel.Finally,companies ought to capitalize on government incentives for green materials while adopting bulk procurement from local sources to minimize transportation costs and secure lower unit prices.
文摘With the further development of urbanization,the conflicts between human beings and the nature has been gradually aggravated;it is urgent to establish balanced natural ecology in the process of urbanization,and harmony between human beings and environment.This study took the ecological landscape project of Shanghai A20 Out Ring (Changning Section) for an example to research and rethink about the ecological construction in the process of urbanization.
基金Scientific and Technological Support and Guidance Plan Projects of Zhejiang Province(Grant No.2008C23019)
文摘A self-developed elasto-plastic finite element program was used to analyze the construction sequence of high rock slope's stabilization in a coal-coking plant, and the result was compared with that employing the ultimate equilibrium method. Based on the results of finite element analysis, the stress contour graphs and displacement vector graphs at different construction steps were obtained, and the behavior of the slope during stabilization construction process was analyzed quantitatively. Based on the analysis of safety factors of three different schemes of stabilization and two different construction schemes, the assessment of stability and bracing design of the construction process were performed. The results show that the original reinforcement design is improper; the stability of the rock slope is controlled by a developed structural plane, the stability factor after excavation is less than 1, and the free surface should be braced in time; for stability, the construction sequence should adopt that bracing follows excavation step by step up to down; the local slide occurred during the construction process agrees with the dangerous slide determined by the numerical analysis, which proves the validity and rationality of the adopted method.
基金funded by Ministry of Industry and Information Technology of the People’s Republic of China[Grant No.2018473].
文摘Quality traceability plays an essential role in assembling and welding offshore platform blocks.The improvement of the welding quality traceability system is conducive to improving the durability of the offshore platform and the process level of the offshore industry.Currently,qualitymanagement remains in the era of primary information,and there is a lack of effective tracking and recording of welding quality data.When welding defects are encountered,it is difficult to rapidly and accurately determine the root cause of the problem from various complexities and scattered quality data.In this paper,a composite welding quality traceability model for offshore platform block construction process is proposed,it contains the quality early-warning method based on long short-term memory and quality data backtracking query optimization algorithm.By fulfilling the training of the early-warning model and the implementation of the query optimization algorithm,the quality traceability model has the ability to assist enterprises in realizing the rapid identification and positioning of quality problems.Furthermore,the model and the quality traceability algorithm are checked by cases in actual working conditions.Verification analyses suggest that the proposed early-warningmodel for welding quality and the algorithmfor optimizing backtracking requests are effective and can be applied to the actual construction process.
文摘In order to improve the efficiency of EPS integral thermal insulation building design and optimize the construction process of insulation construction, this paper uses experiment parts and simulation form to design the thermal insulation construction process, and evaluates the effect of heat preservation. Based on the finite element theory this paper designs adding process of insulation material EPS in the thermal insulation layer, and establishes the radiation heat conduction model of EPS material, finally obtains the solid heat conduction equation. Finally this paper uses ANSYS software to do simulation on the strength and temperature of EPS construction, and evaluates the quality of construction works, which provides technical reference for the design of integrated thermal insulation buildings.
文摘Over the years, China's economy has developed rapidly, which has also provided favorable conditions for the development of all walks of life. On this basis, the income level of our people has continuously improved, and the quality of life has also begun to continuously improve. More and more people begin to install HVAC systems in their homes. In order to better meet people's needs and actively respond to the national call for environmental protection, the relevant construction industry should pay attention to BIM technology and strive to achieve the goal of environmental protection and energy conservation through this technology. This paper makes an in-depth analysis on the energy-saving effect of BIM in the HVAC construction process, with a view to promoting the sustainable and healthy development of the construction industry.
文摘At present, China's urbanization process is further accelerated, people also have more and more requirements for landscape architecture projects, in such a situation, it is necessary to do a more effective job in landscape architecture construction, for the construction of various management work in the process of project construction should also be effectively strengthened, in the on-site construction link to further improve the management level, and then for the effective improvement of the quality of landscape architecture construction to provide the necessary guarantee. Combined with this situation, this paper explores the relevant contents of on-site management measures in the construction process of landscape architecture, hoping that the analysis of this paper can provide certain enlightenment for relevant practitioners, and then promote the quality of urbanization development to be more effectively improved.
文摘In the process of carrying out construction projects, quality and safety should always be the core of development, so as to strengthen the protection of residents' lives and property safety. In this process, attention should be paid to the construction management and quality control. Meanwhile, scientific and perfect management measures should be adopted to improve the project quality, thus promoting the common development of economic and social benefits of construction enterprises and enhancing the overall level of market competition. In order to further realize the sustainable development of the project, it is necessary to strengthen the discussion on the quality control measures of the project construction so as to realize the stable development of the project.
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In the process of China's social and economic development, agriculture is the foundation of its development. At the same time, the "three rural" problem is also the key problem that needs to be solved urgently in China's socialist construction. Therefore, in order to further promote the development of rural agricultural economy and solve the problems of water shortage, relatively low income of farmers and low quality of agricultural water use caused by bad factors such as climate and region, we should pay more attention to the construction of farmland water conservancy projects. However, although the rural irrigation and water conservancy project has brought higher economic benefits to farmers and improved the overall yield of grain, all kinds of construction problems can not be ignored. It is necessary to continuously improve the construction of water conservancy project, so as to better improve the construction quality of rural irrigation and water conservancy project.
文摘In this paper, 2201 and 2212 phases as the corresponding precursor of forming 2212 and 2223 phases are discussed,and the constructive process of unit cell of 2201 phase is ascertained by XRD and chemical kinetics method. Subsequently, the process of 221
文摘In recent years, under the influence of various favorable factors, China's construction engineering industry has developed in an all-round way. At the same time, it also intensifies the competition situation in the whole industry. In the whole construction engineering field, it is very important to improve the overall rationalization and labeling of management work, which is also the core interest of the construction project and the important foundation to ensure the steady and healthy development of the construction unit. Industrial and civil buildings are referred to as civil buildings for short. In the process of organizing and carrying out construction work, civil engineering usually needs to use many different types of construction technology. The level of construction technology will often have a huge impact on the quality of civil engineering. Therefore, when organizing and implementing various construction work in practice, it is necessary to fully combine the actual situation to carry out the whole-process construction technology management on site to ensure the orderly and efficient development of various work.
基金Supported by Special Project of the Science Research in Public Service Industry,Ministry of Water Resources,China(2011-BH140002)
文摘[Objective] The research aimed to study winter operation process of the surface flow constructed wetland in ＂rianjin area. [Method] In view of climate characteristics in Tianjin, by the way of running under the ice, winter operation experiment of the surface flow constructed wetland in Tianjin was conducted, with the expectation to get some useful process parameters to run such systems in North China in winter. [ Result] Although purification effect of the sewage by surface flow constructed wetland in winter was worse than that in other seasons （ average reduction of about 20%）, surface flow constructed wetland running under the ice was feasible in Tianjin area. When surface flow constructed wetland in North China ran under ice in winter, it was suggested that the outlet must be located in a low position to prevent to be completely frozen, and running water depth should not be less than 50 -60 cm. The hydraulic load could be raised on the basis of reflux, and hydraulic retention time should maintain less than 4 d to keep water-soil interface not freezing. Inlet water depth should be increased as much as possible to improve temperature in the system. V Conclusion1 The research could provide reference for promotion and application of the surface flow constructed wetland in North China.
基金The Doctoral Program of Higher Educa-tion Institution of China (No.20050487017)
文摘The index system, code system, and weights of indexes are established to assess the effects of green construction. The index system consists of index level, factor level and sub-factor level. The analytic hierarchy process is used to determine the weights of indexes, and the consistency test indicate that the weight assignment is reasonable. Using fuzzy synthetic judgment method, the assessment model is built, which includes factor set, weight set and conclusion set. An example is given to demonstrate the assessment procedures.
基金The National Natural Science Foundation of China(No.51308105)
文摘A newnumerical method based on vector form intrinsic finite element（VFIFE） is proposed to simulate the integral lifting process of steel structures. First, in order to verify the validity of the VFIFE method, taking the steel gallery between the integrated building and the attached building of Nanjing M obile Communication Buildings for example, the static analysis was carried out and the corresponding results were compared with the results achieved by the traditional finite element method. Then, according to the characteristics of dynamic construction of steel structure integral lifting, the tension cable element was employed to simulate the behavior of dynamic construction. The VFIFE method avoids the iterative solution of the stiffness matrix and the singularity problems. Therefore, it is simple to simulate the complete process of steel structure lifting construction.Finally, by using the VFIFE, the displacement and internal force time history curves of the steel structures under different lifting speeds are obtained. The results show that the lifting speed has influence on the lifting force, the internal force, and the displacement of the structure. In the case of normal lifting speed, the dynamic magnification factor of 1. 5 is safe and reasonable for practical application.
