Vigorously popularizing agricultural high-efficiency water-saving irrigation technology is a comprehensive implementation of the new water control thinking of "water saving priority, spatial balance, systematic g...Vigorously popularizing agricultural high-efficiency water-saving irrigation technology is a comprehensive implementation of the new water control thinking of "water saving priority, spatial balance, systematic governance, and two-handed effort" proposed by General Secretary Xi Jinping, and also an effective way to promote the sustainable use of water resources, increase agricultural production, increase farmers' income, and make rural areas rich. This paper analyzes the deficiencies in the process of popularizing high-efficiency water-saving irrigation technology in Beijing suburbs, and puts forward some countermeasures and suggestions, such as speeding up the comprehensive reform of agricultural water price, strengthening the publicity and training of high-efficiency water-saving irrigation technology, and improving the relevant policy support of Pro agriculture and benefiting agriculture.展开更多
The development of agricultural science and technology has been accelerating, which has promoted the scientific and modern development of agricultural planting. In addition, advanced technology can be adopted in plant...The development of agricultural science and technology has been accelerating, which has promoted the scientific and modern development of agricultural planting. In addition, advanced technology can be adopted in planting and maintenance to promote the realization of large-scale agricultural production and help farmers to create higher income. At present, Shandong has stepped up the construction of irrigation and water conservancy projects, the main purpose of which is to adjust water resources to meet the needs of crop growth, but there is still a serious waste of water resources. Shandong Province is internationally recognized as an "extremely water-deficient area", and the water demand for agricultural irrigation is large and waste is serious. Therefore, it is necessary to play the guiding role of the concept of energy conservation and emission reduction, and adopt efficient water-saving irrigation technology to create higher economic benefits and realize the efficient use of water resources. This paper focuses on the application of high-efficiency water-saving irrigation technology in farmland water conservancy projects.展开更多
Agriculture is the foundation of people's livelihood and the foundation of national economic development. The uneven distribution of water resources and the shortage of water resources have seriously hindered the ...Agriculture is the foundation of people's livelihood and the foundation of national economic development. The uneven distribution of water resources and the shortage of water resources have seriously hindered the development of agriculture in our country. As a key component of China's industrial layout, the country attaches great importance to agricultural development. Under the background of social intelligence development, it is imperative to promote the development of high-quality agriculture and the basic construction of high-standard farmland.展开更多
With the continuous development of China's modern agriculture, the concept of energy conservation and environmental protection has been widely used in practical production. In order to avoid water waste, it is nec...With the continuous development of China's modern agriculture, the concept of energy conservation and environmental protection has been widely used in practical production. In order to avoid water waste, it is necessary to strengthen in-depth analysis of water-saving irrigation technology, integrate new water-saving irrigation technology according to actual production requirements and capital investment standards, and strengthen research and development of core water-saving irrigation technology.展开更多
At present, people have higher requirements for building water supply and drainage design and other contents. Under such circumstances, it is necessary to effectively improve the water supply and drainage design level...At present, people have higher requirements for building water supply and drainage design and other contents. Under such circumstances, it is necessary to effectively improve the water supply and drainage design level to a greater extent, more fully integrate the scientific concept of development and related concepts of energy conservation and environmental protection, and realize energy-saving and emission-reduction design. Only in this way can better energy-saving and emission-reduction effects be reflected, and necessary guarantee be provided for the improvement of the overall project quality and energy-saving and environmental protection benefits. Based on this, it is necessary to analyze the existing problems and countermeasures in the energy-saving and water-saving design of water supply and drainage of buildings.展开更多
Land degradation and desertification have become severe environmental problems in arid areas due to excessive use of water resources. It is urgent to reduce agricultural water use for ecological rehabilitation, which ...Land degradation and desertification have become severe environmental problems in arid areas due to excessive use of water resources. It is urgent to reduce agricultural water use for ecological rehabilitation, which may result in a decrease in agricultural production and farmer＇s welfare. This paper focused on the impacts of some main measures including extensions of watersaving irrigation, expanding solar green house and increasing off-farm employment, which are generally recognized to be important to alleviate water shortage and poverty. A bioconomic model is applied taking Minqin Oasis in Gansu Province as a case study site. Simulation results showed that the effect of expanding solar greenhouse was more positive than other ones so it drew more attention. On the view of the different effects between each irrigation zone, mixed policy patterns suitable for them are suggested. In Baqu, expanding solar greenhouse should be the most important, auxiliary with encouraging pipe irrigation. Inversely, with regard to Quanshan, the major attention should be paid to subsidy for pipe irrigation and it would be better to supply the off-farm employment opportunities to the households in Huqu, where the expanding of solar greenhouse should also be summoned. Finally, it should be noted that farmer＇s income would only resume to 90% of the current level in the short run by putting more effort into local policies. Thus, the ecological compensation is needed to ensure farmer＇s welfare.展开更多
The demand on low-carbon emission fabrication technologies for energy storage materials is increasing dramatically with the global interest on carbon neutrality.As a promising active material for metal-sulfur batterie...The demand on low-carbon emission fabrication technologies for energy storage materials is increasing dramatically with the global interest on carbon neutrality.As a promising active material for metal-sulfur batteries,sulfur is of great interest due to its high-energy-density and abundance.However,there is a lack of industry-friendly and low-carbon fabrication strategies for high-performance sulfur-based active particles,which,however,is in critical need by their practical success.Herein,based on a hail-inspired sulfur nano-storm(HSN)technology developed in our lab,we report an energy-saving,solvent-free strategy for producing core-shell sulfur/carbon electrode particles(CNT@AC-S)in minutes.The fabrication of the CNT@AC-S electrode particles only involves low-cost sulfur blocks,commercial carbon nanotubes(CNT)and activated carbon(AC)micro-particles with high specific surface area.Based on the above core-shell CNT@AC-S particles,sulfur cathode with a high sulfur-loading of 9.2 mg cm^(-2) delivers a stable area capacity of 6.6 mAh cm^(-2) over 100 cycles.Furthermore,even for sulfur cathode with a super-high sulfur content(72 wt%over the whole electrode),it still delivers a high area capacity of 9 mAh cm^(-2) over50 cycles in a quasi-lean electrolyte condition.In a nutshell,this study brings a green and industryfriendly fabrication strategy for cost-effective production of rationally designed S-rich electrode particles.展开更多
China's continuous economic progress, the deepening process of urbanization, and the gradual improvement of people's living standards have brought more opportunities for the development of the construction ind...China's continuous economic progress, the deepening process of urbanization, and the gradual improvement of people's living standards have brought more opportunities for the development of the construction industry. The number of construction projects is increasing, and the scale of projects is expanding. In order to meet the increasing demand of people for the number of buildings, the construction industry is developing and innovating, and the application of prefabricated building mode comes into being. Building curtain wall is an important part of prefabricated building. Glass curtain wall is widely used in practice. In order to improve the overall quality of prefabricated building engineering and the overall beauty of the building, we should attach great importance to the construction of prefabricated building curtain wall and adopt scientific curtain wall construction technology. Combined with the concept of prefabricated building, this paper deeply analyzes the key points of curtain wall construction technology and the specific application of curtain wall construction method of prefabricated building, which provides valuable reference experience for building a scientific and complete curtain wall construction technology system of prefabricated building, providing technical support for prefabricated building, and promoting the healthy and sustainable development of prefabricated building in China.展开更多
With the development of modern science and technology, the construction industry is gradually moving towards an innovative development path. The requirements of modern prefabricated building design are not only the re...With the development of modern science and technology, the construction industry is gradually moving towards an innovative development path. The requirements of modern prefabricated building design are not only the requirements of safety and economy, but also the requirements of energy saving and innovation. BIM technology refers to building information model. By using BIM technology, designers can accurately find out the problems existing in prefabricated building design, quickly work out effective solutions, and reduce the incidence of various difficult problems in the construction process, thus improving the scientificity and rationality of prefabricated building design and comprehensively improving the quality of prefabricated building design schemes. Next, the article discusses the assembly building design method based on BIM technology.展开更多
The mechanical connection of aircraft structural parts is mainly mechanical connection. The quality of mechanical connection has an important impact on the service life of the whole aircraft. The automatic drilling sy...The mechanical connection of aircraft structural parts is mainly mechanical connection. The quality of mechanical connection has an important impact on the service life of the whole aircraft. The automatic drilling system of aircraft assembly is applied to the digital assembly of aircraft in aviation manufacturing engineering, which can greatly improve the assembly quality and efficiency. This paper studies and analyzes the advanced hole making technology and equipment in aircraft assembly for reference.展开更多
"Environmental protection concept" is the latest project construction concept put forward by Chinas construction industry in the market development. Reasonable, standardized and scientific use of green techn..."Environmental protection concept" is the latest project construction concept put forward by Chinas construction industry in the market development. Reasonable, standardized and scientific use of green technology in prefabricated building construction can not only bring into play the higher economic benefits of the building in the market, but also create a better social image for builders and construction units in the market. In order to implement this work, solve the extensive production problems existing in the early development of the construction industry in the market and reduce the problems of high energy consumption and heavy pollution caused by unreasonable construction technology.展开更多
The problem of noise has always been highlighted in assembled steel structure houses.Therefore,it is necessary to use effective soundproof measures where steel beams intersect with the reserved line pipe openings,door...The problem of noise has always been highlighted in assembled steel structure houses.Therefore,it is necessary to use effective soundproof measures where steel beams intersect with the reserved line pipe openings,doors,windows,elevator shafts,and other locations.In this paper,we will investigate the areas with subpar soundproof performance in an assembled steel structure residential project and propose suitable noise control measures to address this issue.展开更多
Water-saving and drought-resistance upland rice has become a preferable choice for cotton farmlands ready for changing crops or paddy fields with water in short,because simplified and mechanical cultivation can be app...Water-saving and drought-resistance upland rice has become a preferable choice for cotton farmlands ready for changing crops or paddy fields with water in short,because simplified and mechanical cultivation can be applied for the rice varieties of drought resistance and high yield.At present,it has been applied with an area of 400 000 hm2 in Hunan Province and the area continues growing.The research bred and introduced the relevant cultivation technology standard applicable to local water-saving and drought-resistance rice varieties in order to improve farmer＇s benefits.展开更多
China is rich in land and water resources, but the distribution of fresh water resources is uneven, with more in the southeast and less in the northwest. As a result, China is one of the countries lacking in fresh wat...China is rich in land and water resources, but the distribution of fresh water resources is uneven, with more in the southeast and less in the northwest. As a result, China is one of the countries lacking in fresh water resources. In order to improve the utilization rate of water resources, China has vigorously developed the agricultural water conservancy irrigation in recent decades, largely solving the problem of uneven distribution of fresh water resources, and getting rid of the situation of "relying on the weather to feed" in traditional agriculture. During the years of development, the irrigation mode of agricultural water conservancy is also developing towards diversification. In many irrigation mode choices, how to better apply water-saving technical measures is a problem that needs to be considered.展开更多
Nowadays, the prefabrication level of bridge engineering is higher and higher, and many prefabricated components are used in construction, such as prefabricated bent cap. Compared with the previous cap beam constructi...Nowadays, the prefabrication level of bridge engineering is higher and higher, and many prefabricated components are used in construction, such as prefabricated bent cap. Compared with the previous cap beam construction technology, the fabricated cap beam can not only ensure the construction quality, but also speed up the construction speed, shorten the construction period, and lay a good foundation for bridge construction. Combined with the construction practice, this paper studies and discusses the important links of prefabricated bridge construction, the installation technology of precast column and the key points of construction quality control, hoping to provide reference for the compilation of relevant construction specifications in the future.展开更多
With the acceleration of urbanization, the scale of urban buildings is expanding day by day, and the requirements for construction efficiency, building function and quality are higher and higher. The development of co...With the acceleration of urbanization, the scale of urban buildings is expanding day by day, and the requirements for construction efficiency, building function and quality are higher and higher. The development of construction technology has played a positive role in improving the efficiency and quality of construction projects. This paper analyzes the construction technology of concrete prefabricated residential buildings, further studies the advantages of the construction technology of prefabricated residential buildings, and analyzes the deficiencies in the current construction engineering, hoping to provide some help and reference value to relevant people and enterprises.展开更多
Prefabricated buildings are the focus of attention and research in Chinas construction field and related industries. Compared with conventional brick-concrete buildings, such buildings have the advantages of less poll...Prefabricated buildings are the focus of attention and research in Chinas construction field and related industries. Compared with conventional brick-concrete buildings, such buildings have the advantages of less pollution, less construction waste and simplified manual operation. However, the main reason for restricting the popularization and use of prefabricated buildings in the market is that the design experience of such buildings is less, that is, the design results often have the problem of node collision during the on-site assembly construction, which not only affects the overall design quality of the building, but also interferes with the subsequent assembly construction of the project. Therefore, it is necessary to comprehensively deepen the design of prefabricated building structure on the basis of existing working technology and information technology.展开更多
Prefabricated building is a new trend in the development of the construction industry at present. Through the modularization, prefabrication, standardization and industrialization of building components, the rapid and...Prefabricated building is a new trend in the development of the construction industry at present. Through the modularization, prefabrication, standardization and industrialization of building components, the rapid and modern construction can be realized. As a new prefabricated technology, laminated plates are also gradually applied in today's construction. Starting from the analysis of the advantages and disadvantages of the present laminated plate technology, this paper expounds the difficulties and key points of the laminated plate technology in the construction process, and makes some prospects for the development of the laminated plate technology in the future, hoping to help promote the faster development of the assembled building.展开更多
Under the background of the new era, the construction industry has become one of the pillar industries, which has a positive impact on promoting social and economic development. With the improvement of the production ...Under the background of the new era, the construction industry has become one of the pillar industries, which has a positive impact on promoting social and economic development. With the improvement of the production technology level, the construction methods tend to be diversified. In addition to the conventional construction technology, there are also prefabricated construction methods. However, no matter which construction technology is used, it is necessary to fully guarantee the safety and environmental protection of the building to avoid economic losses. As far as the design of green prefabricated buildings is concerned, there are high requirements for the ability of designers. Designers need to comprehensively consider various factors in advance to improve the safety of prefabricated buildings. From the perspective of the rapid development of information technology, the emergence of BIM technology provides good technical support for the improvement of architectural design standards.展开更多
In view of the problems such as backward production mode,poor quality stability,high safety risk and incomplete control system during erection of the reinforcement framework of simply-supported box girders for high-sp...In view of the problems such as backward production mode,poor quality stability,high safety risk and incomplete control system during erection of the reinforcement framework of simply-supported box girders for high-speed railway(HSR),and in combination with the key points and main challenges in the reinforcement framework construction of Guangzhou-Zhanjiang HSR,the overall technical route for the intelligent manufacturing of reinforcement framework of simply-supported box girders is put forward.The component design of reinforcement framework of simply supported box girder is carried out based on BIM,and the feasibility of the scheme is verified through segment assembly test.The assembly techniques are studied in combination with the mesh design scheme to achieve rapid forming of the reinforcement framework.R&D of automatic processing equipment for components,material transshipment equipment,automatic hoisting equipment and technological equipment for assembly clamping fixture are carried out to realize the overall design of equipment production line.An intelligent control system is developed for the whole-process intelligent construction of reinforcement framework to realize the full life-cycle applications for the workshop production and visual management including intelligent layout and quality traceability.The research results systematically optimize and innovate the assembly and forming technologies of reinforcement framework in the prefabrication beam yard of high-speed railway,realize the component processing,automatic assembly and information technology management,improve the construction quality,efficiency and information technology level of intelligent manufacturing of reinforcement framework of railway prefabricated beam as a whole,and reduce the construction cost of the project.The research has realized a major breakthrough in the construction technology of railway prefabricated box girders,which has the extensive technical and market promotion values.展开更多
文摘Vigorously popularizing agricultural high-efficiency water-saving irrigation technology is a comprehensive implementation of the new water control thinking of "water saving priority, spatial balance, systematic governance, and two-handed effort" proposed by General Secretary Xi Jinping, and also an effective way to promote the sustainable use of water resources, increase agricultural production, increase farmers' income, and make rural areas rich. This paper analyzes the deficiencies in the process of popularizing high-efficiency water-saving irrigation technology in Beijing suburbs, and puts forward some countermeasures and suggestions, such as speeding up the comprehensive reform of agricultural water price, strengthening the publicity and training of high-efficiency water-saving irrigation technology, and improving the relevant policy support of Pro agriculture and benefiting agriculture.
文摘The development of agricultural science and technology has been accelerating, which has promoted the scientific and modern development of agricultural planting. In addition, advanced technology can be adopted in planting and maintenance to promote the realization of large-scale agricultural production and help farmers to create higher income. At present, Shandong has stepped up the construction of irrigation and water conservancy projects, the main purpose of which is to adjust water resources to meet the needs of crop growth, but there is still a serious waste of water resources. Shandong Province is internationally recognized as an "extremely water-deficient area", and the water demand for agricultural irrigation is large and waste is serious. Therefore, it is necessary to play the guiding role of the concept of energy conservation and emission reduction, and adopt efficient water-saving irrigation technology to create higher economic benefits and realize the efficient use of water resources. This paper focuses on the application of high-efficiency water-saving irrigation technology in farmland water conservancy projects.
文摘Agriculture is the foundation of people's livelihood and the foundation of national economic development. The uneven distribution of water resources and the shortage of water resources have seriously hindered the development of agriculture in our country. As a key component of China's industrial layout, the country attaches great importance to agricultural development. Under the background of social intelligence development, it is imperative to promote the development of high-quality agriculture and the basic construction of high-standard farmland.
文摘With the continuous development of China's modern agriculture, the concept of energy conservation and environmental protection has been widely used in practical production. In order to avoid water waste, it is necessary to strengthen in-depth analysis of water-saving irrigation technology, integrate new water-saving irrigation technology according to actual production requirements and capital investment standards, and strengthen research and development of core water-saving irrigation technology.
文摘At present, people have higher requirements for building water supply and drainage design and other contents. Under such circumstances, it is necessary to effectively improve the water supply and drainage design level to a greater extent, more fully integrate the scientific concept of development and related concepts of energy conservation and environmental protection, and realize energy-saving and emission-reduction design. Only in this way can better energy-saving and emission-reduction effects be reflected, and necessary guarantee be provided for the improvement of the overall project quality and energy-saving and environmental protection benefits. Based on this, it is necessary to analyze the existing problems and countermeasures in the energy-saving and water-saving design of water supply and drainage of buildings.
基金the Grant for Outstanding Hundred Scholars of Chinese Academy of Sciences.
文摘Land degradation and desertification have become severe environmental problems in arid areas due to excessive use of water resources. It is urgent to reduce agricultural water use for ecological rehabilitation, which may result in a decrease in agricultural production and farmer＇s welfare. This paper focused on the impacts of some main measures including extensions of watersaving irrigation, expanding solar green house and increasing off-farm employment, which are generally recognized to be important to alleviate water shortage and poverty. A bioconomic model is applied taking Minqin Oasis in Gansu Province as a case study site. Simulation results showed that the effect of expanding solar greenhouse was more positive than other ones so it drew more attention. On the view of the different effects between each irrigation zone, mixed policy patterns suitable for them are suggested. In Baqu, expanding solar greenhouse should be the most important, auxiliary with encouraging pipe irrigation. Inversely, with regard to Quanshan, the major attention should be paid to subsidy for pipe irrigation and it would be better to supply the off-farm employment opportunities to the households in Huqu, where the expanding of solar greenhouse should also be summoned. Finally, it should be noted that farmer＇s income would only resume to 90% of the current level in the short run by putting more effort into local policies. Thus, the ecological compensation is needed to ensure farmer＇s welfare.
基金supported by the Double First-Class Construction Funds of Sichuan University and National Natural Science Foundation of China(NNSFC)financial support from the National Science Foundation of China(51873126,51422305,51721091)。
文摘The demand on low-carbon emission fabrication technologies for energy storage materials is increasing dramatically with the global interest on carbon neutrality.As a promising active material for metal-sulfur batteries,sulfur is of great interest due to its high-energy-density and abundance.However,there is a lack of industry-friendly and low-carbon fabrication strategies for high-performance sulfur-based active particles,which,however,is in critical need by their practical success.Herein,based on a hail-inspired sulfur nano-storm(HSN)technology developed in our lab,we report an energy-saving,solvent-free strategy for producing core-shell sulfur/carbon electrode particles(CNT@AC-S)in minutes.The fabrication of the CNT@AC-S electrode particles only involves low-cost sulfur blocks,commercial carbon nanotubes(CNT)and activated carbon(AC)micro-particles with high specific surface area.Based on the above core-shell CNT@AC-S particles,sulfur cathode with a high sulfur-loading of 9.2 mg cm^(-2) delivers a stable area capacity of 6.6 mAh cm^(-2) over 100 cycles.Furthermore,even for sulfur cathode with a super-high sulfur content(72 wt%over the whole electrode),it still delivers a high area capacity of 9 mAh cm^(-2) over50 cycles in a quasi-lean electrolyte condition.In a nutshell,this study brings a green and industryfriendly fabrication strategy for cost-effective production of rationally designed S-rich electrode particles.
文摘China's continuous economic progress, the deepening process of urbanization, and the gradual improvement of people's living standards have brought more opportunities for the development of the construction industry. The number of construction projects is increasing, and the scale of projects is expanding. In order to meet the increasing demand of people for the number of buildings, the construction industry is developing and innovating, and the application of prefabricated building mode comes into being. Building curtain wall is an important part of prefabricated building. Glass curtain wall is widely used in practice. In order to improve the overall quality of prefabricated building engineering and the overall beauty of the building, we should attach great importance to the construction of prefabricated building curtain wall and adopt scientific curtain wall construction technology. Combined with the concept of prefabricated building, this paper deeply analyzes the key points of curtain wall construction technology and the specific application of curtain wall construction method of prefabricated building, which provides valuable reference experience for building a scientific and complete curtain wall construction technology system of prefabricated building, providing technical support for prefabricated building, and promoting the healthy and sustainable development of prefabricated building in China.
文摘With the development of modern science and technology, the construction industry is gradually moving towards an innovative development path. The requirements of modern prefabricated building design are not only the requirements of safety and economy, but also the requirements of energy saving and innovation. BIM technology refers to building information model. By using BIM technology, designers can accurately find out the problems existing in prefabricated building design, quickly work out effective solutions, and reduce the incidence of various difficult problems in the construction process, thus improving the scientificity and rationality of prefabricated building design and comprehensively improving the quality of prefabricated building design schemes. Next, the article discusses the assembly building design method based on BIM technology.
文摘The mechanical connection of aircraft structural parts is mainly mechanical connection. The quality of mechanical connection has an important impact on the service life of the whole aircraft. The automatic drilling system of aircraft assembly is applied to the digital assembly of aircraft in aviation manufacturing engineering, which can greatly improve the assembly quality and efficiency. This paper studies and analyzes the advanced hole making technology and equipment in aircraft assembly for reference.
文摘"Environmental protection concept" is the latest project construction concept put forward by Chinas construction industry in the market development. Reasonable, standardized and scientific use of green technology in prefabricated building construction can not only bring into play the higher economic benefits of the building in the market, but also create a better social image for builders and construction units in the market. In order to implement this work, solve the extensive production problems existing in the early development of the construction industry in the market and reduce the problems of high energy consumption and heavy pollution caused by unreasonable construction technology.
文摘The problem of noise has always been highlighted in assembled steel structure houses.Therefore,it is necessary to use effective soundproof measures where steel beams intersect with the reserved line pipe openings,doors,windows,elevator shafts,and other locations.In this paper,we will investigate the areas with subpar soundproof performance in an assembled steel structure residential project and propose suitable noise control measures to address this issue.
文摘Water-saving and drought-resistance upland rice has become a preferable choice for cotton farmlands ready for changing crops or paddy fields with water in short,because simplified and mechanical cultivation can be applied for the rice varieties of drought resistance and high yield.At present,it has been applied with an area of 400 000 hm2 in Hunan Province and the area continues growing.The research bred and introduced the relevant cultivation technology standard applicable to local water-saving and drought-resistance rice varieties in order to improve farmer＇s benefits.
文摘China is rich in land and water resources, but the distribution of fresh water resources is uneven, with more in the southeast and less in the northwest. As a result, China is one of the countries lacking in fresh water resources. In order to improve the utilization rate of water resources, China has vigorously developed the agricultural water conservancy irrigation in recent decades, largely solving the problem of uneven distribution of fresh water resources, and getting rid of the situation of "relying on the weather to feed" in traditional agriculture. During the years of development, the irrigation mode of agricultural water conservancy is also developing towards diversification. In many irrigation mode choices, how to better apply water-saving technical measures is a problem that needs to be considered.
文摘Nowadays, the prefabrication level of bridge engineering is higher and higher, and many prefabricated components are used in construction, such as prefabricated bent cap. Compared with the previous cap beam construction technology, the fabricated cap beam can not only ensure the construction quality, but also speed up the construction speed, shorten the construction period, and lay a good foundation for bridge construction. Combined with the construction practice, this paper studies and discusses the important links of prefabricated bridge construction, the installation technology of precast column and the key points of construction quality control, hoping to provide reference for the compilation of relevant construction specifications in the future.
文摘With the acceleration of urbanization, the scale of urban buildings is expanding day by day, and the requirements for construction efficiency, building function and quality are higher and higher. The development of construction technology has played a positive role in improving the efficiency and quality of construction projects. This paper analyzes the construction technology of concrete prefabricated residential buildings, further studies the advantages of the construction technology of prefabricated residential buildings, and analyzes the deficiencies in the current construction engineering, hoping to provide some help and reference value to relevant people and enterprises.
文摘Prefabricated buildings are the focus of attention and research in Chinas construction field and related industries. Compared with conventional brick-concrete buildings, such buildings have the advantages of less pollution, less construction waste and simplified manual operation. However, the main reason for restricting the popularization and use of prefabricated buildings in the market is that the design experience of such buildings is less, that is, the design results often have the problem of node collision during the on-site assembly construction, which not only affects the overall design quality of the building, but also interferes with the subsequent assembly construction of the project. Therefore, it is necessary to comprehensively deepen the design of prefabricated building structure on the basis of existing working technology and information technology.
文摘Prefabricated building is a new trend in the development of the construction industry at present. Through the modularization, prefabrication, standardization and industrialization of building components, the rapid and modern construction can be realized. As a new prefabricated technology, laminated plates are also gradually applied in today's construction. Starting from the analysis of the advantages and disadvantages of the present laminated plate technology, this paper expounds the difficulties and key points of the laminated plate technology in the construction process, and makes some prospects for the development of the laminated plate technology in the future, hoping to help promote the faster development of the assembled building.
文摘Under the background of the new era, the construction industry has become one of the pillar industries, which has a positive impact on promoting social and economic development. With the improvement of the production technology level, the construction methods tend to be diversified. In addition to the conventional construction technology, there are also prefabricated construction methods. However, no matter which construction technology is used, it is necessary to fully guarantee the safety and environmental protection of the building to avoid economic losses. As far as the design of green prefabricated buildings is concerned, there are high requirements for the ability of designers. Designers need to comprehensively consider various factors in advance to improve the safety of prefabricated buildings. From the perspective of the rapid development of information technology, the emergence of BIM technology provides good technical support for the improvement of architectural design standards.
文摘In view of the problems such as backward production mode,poor quality stability,high safety risk and incomplete control system during erection of the reinforcement framework of simply-supported box girders for high-speed railway(HSR),and in combination with the key points and main challenges in the reinforcement framework construction of Guangzhou-Zhanjiang HSR,the overall technical route for the intelligent manufacturing of reinforcement framework of simply-supported box girders is put forward.The component design of reinforcement framework of simply supported box girder is carried out based on BIM,and the feasibility of the scheme is verified through segment assembly test.The assembly techniques are studied in combination with the mesh design scheme to achieve rapid forming of the reinforcement framework.R&D of automatic processing equipment for components,material transshipment equipment,automatic hoisting equipment and technological equipment for assembly clamping fixture are carried out to realize the overall design of equipment production line.An intelligent control system is developed for the whole-process intelligent construction of reinforcement framework to realize the full life-cycle applications for the workshop production and visual management including intelligent layout and quality traceability.The research results systematically optimize and innovate the assembly and forming technologies of reinforcement framework in the prefabrication beam yard of high-speed railway,realize the component processing,automatic assembly and information technology management,improve the construction quality,efficiency and information technology level of intelligent manufacturing of reinforcement framework of railway prefabricated beam as a whole,and reduce the construction cost of the project.The research has realized a major breakthrough in the construction technology of railway prefabricated box girders,which has the extensive technical and market promotion values.
