Accurate and efficient prediction of the distribution of surface loads on buildings subjected to explosive effects is crucial for rapidly calculating structural dynamic responses,establishing effective protective meas...Accurate and efficient prediction of the distribution of surface loads on buildings subjected to explosive effects is crucial for rapidly calculating structural dynamic responses,establishing effective protective measures,and designing civil defense engineering solutions.Current state-of-the-art methods face several issues:Experimental research is difficult and costly to implement,theoretical research is limited to simple geometries and lacks precision,and direct simulations require substantial computational resources.To address these challenges,this paper presents a data-driven method for predicting blast loads on building surfaces.This approach increases both the accuracy and computational efficiency of load predictions when the geometry of the building changes while the explosive yield remains constant,significantly improving its applicability in complex scenarios.This study introduces an innovative encoder-decoder graph neural network model named BlastGraphNet,which uses a message-passing mechanism to predict the overpressure and impulse load distributions on buildings with conventional and complex geometries during explosive events.The model also facilitates related downstream applications,such as damage mode identification and rapid assessment of virtual city explosions.The calculation results indicate that the prediction error of the model for conventional building tests is less than 2%,and its inference speed is 3-4 orders of magnitude faster than that of state-of-the-art numerical methods.In extreme test cases involving buildings with complex geometries and building clusters,the method achieved high accuracy and excellent generalizability.The strong adaptability and generalizability of BlastGraphNet confirm that this novel method enables precise real-time prediction of blast loads and provides a new paradigm for damage assessment in protective engineering.展开更多
This article takes the reconstruction and expansion project of the Tianjin section of the Beijing-Tianjin-Tanggu Expressway as an example to systematically explore the design strategies for roadbed and pavement under ...This article takes the reconstruction and expansion project of the Tianjin section of the Beijing-Tianjin-Tanggu Expressway as an example to systematically explore the design strategies for roadbed and pavement under the goal of green highway construction.During the research,after discussing the goals and policies of green highway construction in Beijing,in-depth research was conducted around the design of protective support engineering,soft foundation treatment,comprehensive utilization of earthwork,drainage systems,and pavement design to explore how the case project can achieve high-quality design based on the goal of green highway construction.It is hoped that this article can provide technical reference and value for China’s road and bridge engineering design and construction units,providing a low-carbon practice paradigm for the integration of Beijing-Tianjin-Hebei transportation,while promoting the sustainable development of China’s green highway concept.展开更多
In order to realize the standardization and normalization of environmental protection project management.This paper uses the literature method to study the current status of the existing project management mode,and po...In order to realize the standardization and normalization of environmental protection project management.This paper uses the literature method to study the current status of the existing project management mode,and points out the problems:lack of a sound project management system,insufficient information application of project management,and unclear decentralization in project management;on this basis,this paper proposes optimization strategies from the aspects of perfecting the engineering project management system,clarifying the allocation of project management authority,and strengthening the construction of engineering project management information.And put forward the future development trend of project engineering management,on the basis of two mainstream management modes of BOT(Build-Operate-Transfer)and EPC(Engineering Procurement Construction),build a standardized project management platform to achieve intelligent management.Realize intelligent management of engineering project management to achieve standardization and standardization,greatly improving the efficiency of project management.展开更多
Environmental monitoring plays an important role in the development of environmental protection work. Environmental monitoring provides favorable basis for China's environmental law enforcement and governance. Thi...Environmental monitoring plays an important role in the development of environmental protection work. Environmental monitoring provides favorable basis for China's environmental law enforcement and governance. This paper analyzes the current situation of environmental monitoring in environmental protection projects and discusses the effective measures to improve the level of environmental monitoring.展开更多
With the acceleration of the urbanization process, the demand for domestic water and industrial water is increasing. Strengthening the development and protection of water resources is the only way to implement the con...With the acceleration of the urbanization process, the demand for domestic water and industrial water is increasing. Strengthening the development and protection of water resources is the only way to implement the concept of green sustainable development. The water resources treatment process is affected by various factors. Ultrafiltration membrane technology improves the utilization rate of water resources, reduces energy consumption, and reduces the damage to the environment. It is widely used in the water treatment field of environmental protection projects, and is an important technical road to realize the sustainable development of water resources.展开更多
With the rapid development of China's economy, the relevant state departments have also paid more and more attention to the construction technology of highway subgrade protection engineering. In order to effective...With the rapid development of China's economy, the relevant state departments have also paid more and more attention to the construction technology of highway subgrade protection engineering. In order to effectively promote the substantial improvement of the construction efficiency of highway subgrade protection projects, construction enterprises should strictly take the actual situation as the basis, actively introduce new and efficient emerging technologies, complete the subgrade protection work with high quality, and at the same time regard the subgrade protection work as the key to the construction process, so as to master the impact of this work on the overall construction quality, and lay the foundation for the significant improvement of the project quality. In view of this, this paper has carried out in-depth research on the construction technology of highway engineering subgrade protection engineering.展开更多
-The effect of wave group on wave run-up on a slope dike is mainly discussed in this paper. Two simulating methods of wave group and their applications in laboratory are introduced. Synthesizing the research results o...-The effect of wave group on wave run-up on a slope dike is mainly discussed in this paper. Two simulating methods of wave group and their applications in laboratory are introduced. Synthesizing the research results of wave run-up on a slope dike, the effect of wave group on wave run-up on a slope dike in coastal protection engineering is studied as the main point.展开更多
This paper introduces the simulating design of warping dam in the Loess Plateau, western Shanxi province. On the basis of collected data, the digital elevation model in the studied area has been created. Utilizing GIS...This paper introduces the simulating design of warping dam in the Loess Plateau, western Shanxi province. On the basis of collected data, the digital elevation model in the studied area has been created. Utilizing GIS (geographical information system) technology, this paper achieves some environmental based results with the simulation method. Also based on the parameter model of precipitation, the tendency of warping sand has been calculated, aiming at providing academic basis for optimization design in the small watershed.展开更多
At present, China's economic development is relatively rapid, and the pace of urbanization has been accelerating, bringing greater convenience to people, and people's living environment has been gradually impr...At present, China's economic development is relatively rapid, and the pace of urbanization has been accelerating, bringing greater convenience to people, and people's living environment has been gradually improved, and living standards are also constantly improved. While the development of urbanization has made great achievements, we should also see that the problem of urban environmental protection has been gradually highlighted. Urban sewage treatment is one of the important contents of urban environmental protection, and some cities are eager to achieve success in their development, focusing on economic development, ignoring the impact of urban sewage discharge on the environment, and their actual management has been gradually diluted, which has brought greater harm to urban environmental protection projects. Therefore, we should put the urban sewage treatment work in the important position of environmental protection, and use the appropriate strategy to speed up the improvement, so as to make the urban development better.展开更多
As a very important part of municipal construction, environmental protection projects have been paid more and more attention. With the introduction of advanced technology and abundant resources, the introduction of so...As a very important part of municipal construction, environmental protection projects have been paid more and more attention. With the introduction of advanced technology and abundant resources, the introduction of social capital will effectively relieve the financial pressure on the government, and the public will also have access to better and better public infrastructure and services. However, the risk allocation and risk management of PPP model in China are still inadequate. Therefore, this paper studies the risk management of environmental protection engineering projects in China, hoping to provide a reference for the risk management model of environmental PPP projects in China.展开更多
In the current rapid development of China's environmental protection cause, the construction and control work of environmental protection projects in various parts of the country are becoming more and stricter. Th...In the current rapid development of China's environmental protection cause, the construction and control work of environmental protection projects in various parts of the country are becoming more and stricter. Through the air monitoring of environmental protection projects, the actual operation value of environmental protection project construction can be well improved. However, there are still many external influencing factors in the field work of air monitoring, which have a negative impact on the quality of the overall monitoring work. Therefore, it is necessary to actively do a good job in the air monitoring of environmental protection projects. So as to ensure that the results of air monitoring can reflect the actual conditions of the atmosphere in the region, actively carry out the air monitoring and control work of environmental protection projects, enable the air monitoring work to be carried out to the maximum extent, and provide more help for the value of environmental projects. However, in the current air monitoring work of environmental protection projects, there are various problems, which have brought serious adverse effects to the overall air monitoring work of the project. Therefore, it is necessary to pay attention to the attention of relevant quality control staff, and to improve the quality of the air monitoring site of environmental protection projects.展开更多
With the development of society, the contradiction between man and nature is becoming more and more obvious. The rapid development of industry and agriculture has caused serious soil pollution, among which the main po...With the development of society, the contradiction between man and nature is becoming more and more obvious. The rapid development of industry and agriculture has caused serious soil pollution, among which the main pollutants include the discharge of pesticides and chemical wastes. In this paper, the current methods of microbial remediation in soil are analyzed. The methods of microbial remediation have many advantages, including high efficiency, low cost, simple access, and not easy to cause secondary pollution to the ecology.展开更多
基金supported by the National Natural Science Founion of China(U2241285).
文摘Accurate and efficient prediction of the distribution of surface loads on buildings subjected to explosive effects is crucial for rapidly calculating structural dynamic responses,establishing effective protective measures,and designing civil defense engineering solutions.Current state-of-the-art methods face several issues:Experimental research is difficult and costly to implement,theoretical research is limited to simple geometries and lacks precision,and direct simulations require substantial computational resources.To address these challenges,this paper presents a data-driven method for predicting blast loads on building surfaces.This approach increases both the accuracy and computational efficiency of load predictions when the geometry of the building changes while the explosive yield remains constant,significantly improving its applicability in complex scenarios.This study introduces an innovative encoder-decoder graph neural network model named BlastGraphNet,which uses a message-passing mechanism to predict the overpressure and impulse load distributions on buildings with conventional and complex geometries during explosive events.The model also facilitates related downstream applications,such as damage mode identification and rapid assessment of virtual city explosions.The calculation results indicate that the prediction error of the model for conventional building tests is less than 2%,and its inference speed is 3-4 orders of magnitude faster than that of state-of-the-art numerical methods.In extreme test cases involving buildings with complex geometries and building clusters,the method achieved high accuracy and excellent generalizability.The strong adaptability and generalizability of BlastGraphNet confirm that this novel method enables precise real-time prediction of blast loads and provides a new paradigm for damage assessment in protective engineering.
文摘This article takes the reconstruction and expansion project of the Tianjin section of the Beijing-Tianjin-Tanggu Expressway as an example to systematically explore the design strategies for roadbed and pavement under the goal of green highway construction.During the research,after discussing the goals and policies of green highway construction in Beijing,in-depth research was conducted around the design of protective support engineering,soft foundation treatment,comprehensive utilization of earthwork,drainage systems,and pavement design to explore how the case project can achieve high-quality design based on the goal of green highway construction.It is hoped that this article can provide technical reference and value for China’s road and bridge engineering design and construction units,providing a low-carbon practice paradigm for the integration of Beijing-Tianjin-Hebei transportation,while promoting the sustainable development of China’s green highway concept.
文摘In order to realize the standardization and normalization of environmental protection project management.This paper uses the literature method to study the current status of the existing project management mode,and points out the problems:lack of a sound project management system,insufficient information application of project management,and unclear decentralization in project management;on this basis,this paper proposes optimization strategies from the aspects of perfecting the engineering project management system,clarifying the allocation of project management authority,and strengthening the construction of engineering project management information.And put forward the future development trend of project engineering management,on the basis of two mainstream management modes of BOT(Build-Operate-Transfer)and EPC(Engineering Procurement Construction),build a standardized project management platform to achieve intelligent management.Realize intelligent management of engineering project management to achieve standardization and standardization,greatly improving the efficiency of project management.
文摘Environmental monitoring plays an important role in the development of environmental protection work. Environmental monitoring provides favorable basis for China's environmental law enforcement and governance. This paper analyzes the current situation of environmental monitoring in environmental protection projects and discusses the effective measures to improve the level of environmental monitoring.
文摘With the acceleration of the urbanization process, the demand for domestic water and industrial water is increasing. Strengthening the development and protection of water resources is the only way to implement the concept of green sustainable development. The water resources treatment process is affected by various factors. Ultrafiltration membrane technology improves the utilization rate of water resources, reduces energy consumption, and reduces the damage to the environment. It is widely used in the water treatment field of environmental protection projects, and is an important technical road to realize the sustainable development of water resources.
文摘With the rapid development of China's economy, the relevant state departments have also paid more and more attention to the construction technology of highway subgrade protection engineering. In order to effectively promote the substantial improvement of the construction efficiency of highway subgrade protection projects, construction enterprises should strictly take the actual situation as the basis, actively introduce new and efficient emerging technologies, complete the subgrade protection work with high quality, and at the same time regard the subgrade protection work as the key to the construction process, so as to master the impact of this work on the overall construction quality, and lay the foundation for the significant improvement of the project quality. In view of this, this paper has carried out in-depth research on the construction technology of highway engineering subgrade protection engineering.
文摘-The effect of wave group on wave run-up on a slope dike is mainly discussed in this paper. Two simulating methods of wave group and their applications in laboratory are introduced. Synthesizing the research results of wave run-up on a slope dike, the effect of wave group on wave run-up on a slope dike in coastal protection engineering is studied as the main point.
基金Supported by National Talented Youth Foundation(40025103)the National Natural Science Foundation of China (90202007)
文摘This paper introduces the simulating design of warping dam in the Loess Plateau, western Shanxi province. On the basis of collected data, the digital elevation model in the studied area has been created. Utilizing GIS (geographical information system) technology, this paper achieves some environmental based results with the simulation method. Also based on the parameter model of precipitation, the tendency of warping sand has been calculated, aiming at providing academic basis for optimization design in the small watershed.
文摘At present, China's economic development is relatively rapid, and the pace of urbanization has been accelerating, bringing greater convenience to people, and people's living environment has been gradually improved, and living standards are also constantly improved. While the development of urbanization has made great achievements, we should also see that the problem of urban environmental protection has been gradually highlighted. Urban sewage treatment is one of the important contents of urban environmental protection, and some cities are eager to achieve success in their development, focusing on economic development, ignoring the impact of urban sewage discharge on the environment, and their actual management has been gradually diluted, which has brought greater harm to urban environmental protection projects. Therefore, we should put the urban sewage treatment work in the important position of environmental protection, and use the appropriate strategy to speed up the improvement, so as to make the urban development better.
文摘As a very important part of municipal construction, environmental protection projects have been paid more and more attention. With the introduction of advanced technology and abundant resources, the introduction of social capital will effectively relieve the financial pressure on the government, and the public will also have access to better and better public infrastructure and services. However, the risk allocation and risk management of PPP model in China are still inadequate. Therefore, this paper studies the risk management of environmental protection engineering projects in China, hoping to provide a reference for the risk management model of environmental PPP projects in China.
文摘In the current rapid development of China's environmental protection cause, the construction and control work of environmental protection projects in various parts of the country are becoming more and stricter. Through the air monitoring of environmental protection projects, the actual operation value of environmental protection project construction can be well improved. However, there are still many external influencing factors in the field work of air monitoring, which have a negative impact on the quality of the overall monitoring work. Therefore, it is necessary to actively do a good job in the air monitoring of environmental protection projects. So as to ensure that the results of air monitoring can reflect the actual conditions of the atmosphere in the region, actively carry out the air monitoring and control work of environmental protection projects, enable the air monitoring work to be carried out to the maximum extent, and provide more help for the value of environmental projects. However, in the current air monitoring work of environmental protection projects, there are various problems, which have brought serious adverse effects to the overall air monitoring work of the project. Therefore, it is necessary to pay attention to the attention of relevant quality control staff, and to improve the quality of the air monitoring site of environmental protection projects.
文摘With the development of society, the contradiction between man and nature is becoming more and more obvious. The rapid development of industry and agriculture has caused serious soil pollution, among which the main pollutants include the discharge of pesticides and chemical wastes. In this paper, the current methods of microbial remediation in soil are analyzed. The methods of microbial remediation have many advantages, including high efficiency, low cost, simple access, and not easy to cause secondary pollution to the ecology.
