Urbanization has led to the rapid development of the construction industry.However,this has also led to higher requirements for the construction engineering management.Other than the quality monitoring of engineering ...Urbanization has led to the rapid development of the construction industry.However,this has also led to higher requirements for the construction engineering management.Other than the quality monitoring of engineering construction,the energy-saving properties of the building should also be considered.Therefore,a scientific management approach should be adopted to improve green building management.This paper primarily examines the importance of quality management in green building construction,along with the factors influencing it.It also identifies the quality issues present in current green building construction.Finally,it proposes measures for quality management in the green building construction process to facilitate the industry’s healthy development.展开更多
In recent years,the quality of people’s lifestyle has significantly increased when the speed of social and economic development is accelerating.Among them,the management of city water supply and drainage construction...In recent years,the quality of people’s lifestyle has significantly increased when the speed of social and economic development is accelerating.Among them,the management of city water supply and drainage construction quality can provide the necessary guarantee for the improvement of people’s quality of life,so the scientific of construction quality management will also become the focus of urban modernization.However,there are many problems in the management of water supply and drainage construction quality in cities after considering the real situation.If the problems are not solved as soon as possible,it will affect people’s daily life and works badly and also restrict the development of urbanization.Therefore,the implementation and practical of city water supply and drainage construction quality management are very important.Based on this,the main research content of this article is about the city water supply and drainage construction quality management and to elaborate the existed common problems and raises up some technical points and hopes that this article content can help in the management of drainage construction quality.展开更多
At present,China’s bridges are mostly made of concrete,which contain a large amount of cement,sand and gravel and other materials,which can easily cause environmental pollution.At the same time,China’s total steel p...At present,China’s bridges are mostly made of concrete,which contain a large amount of cement,sand and gravel and other materials,which can easily cause environmental pollution.At the same time,China’s total steel production continues to rank first in the world.The construction and development of steel bridges have sufficient basic support.At the same time,steel is more environmental-friendly than concrete,with higher strength,lower weight,and can reduce construction waste significantly,so the development of steel bridges has been on the rise.To optimize the application effect of steel structure bridges,it is necessary to analyze the construction management and installation quality control strategies of steel bridges for reference.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
The steel structure construction is an interesting option to the already established concrete structure at a time when the Brazilian civil construction seeks more efficiency.To promote the use of this material it is n...The steel structure construction is an interesting option to the already established concrete structure at a time when the Brazilian civil construction seeks more efficiency.To promote the use of this material it is necessary to have a better understanding of its characteristics and,especially,of its possible pathologies,to avoid degradation,costs,and even the collapse of the structure.In this study Total Quality Management tools were applied to analyze the pathologies found in five medium and large steel-structured buildings.The most frequent ones were structure corrosion,cracks in the closures,and infiltrations in the interface closure/structure.The Ishikawa Diagram is used to identify the origin of the causes of pathologies and the Gravity Urgency Tendency Matrix(GUT Matrix)is used in the risk analysis of each pathology.The results obtained show that it is possible,through these Quality Management tools,to understand the origin of the pathologies,establishing their dangerousness and the degree of risk each one offers.展开更多
With the increase in the number and scale of tunnel projects in China in recent years,the comprehensive management for quality inspection and monitoring measurement in the tunnel construction process is receiving more...With the increase in the number and scale of tunnel projects in China in recent years,the comprehensive management for quality inspection and monitoring measurement in the tunnel construction process is receiving more and more attention.Based on this,this paper analyzes the comprehensive management of quality inspection and monitoring during tunnel construction to ensure the quality of tunnel construction.展开更多
The waterproof construction of subway tunnels is a crucial and challenging aspect of subway tunnel engineering.Mastering excellent waterproof construction technology is essential to ensure that the construction meets ...The waterproof construction of subway tunnels is a crucial and challenging aspect of subway tunnel engineering.Mastering excellent waterproof construction technology is essential to ensure that the construction meets design requirements and guarantees the safe operation of subway lines.This paper focuses on discussing waterproof construction technology for subway station tunnels.By analyzing the main methods and techniques of underground tunnel construction,as well as the key techniques and difficulties of waterproofing construction,this paper examines the waterproofing construction project of Guangzhou Metro Culture Park Station as a case study.It analyzes the methods,quality management practices,and safety management strategies applied in the project.This paper serves as a reference for tunnel engineering design and construction units in our country,offering insights into effective waterproof construction techniques for subway tunnels.展开更多
With the continuous advancement of China's urbanization process,the demand for construction projects is increasing,which is both an opportunity and a challenge for construction companies.If the enterprises themsel...With the continuous advancement of China's urbanization process,the demand for construction projects is increasing,which is both an opportunity and a challenge for construction companies.If the enterprises themselves can grasp the background and policy conditions to maintain a high level of construction engineering,then its enterprise benefits and future development prospects will be excellent.However,there are also many companies whose own reputation and actual benefits have been affected for poor engineering quality caused by poor construction management.This is exactly what we must pay attention to.This article will analyse and explore the relevant work to improve the engineering quality of different phases of engineering construction and to guide the management of the construction unit in the future from the perspective of the construction unit to strengthen the project quality supervision.展开更多
Quality is the life of architecture.Without quality there is nothing.Engineering projects have the characteristics of large investment and long construction period,so the quality of construction projects must be stric...Quality is the life of architecture.Without quality there is nothing.Engineering projects have the characteristics of large investment and long construction period,so the quality of construction projects must be strictly controlled.The control of construction quality of engineering projects is the quality control of the whole process and the participation of all employees.It is the implementation of construction engineering quality regulations and mandatory standards,the correct configuration of construction production management elements and the use of scientific management methods to achieve the expected use function of engineering projects And quality standards,deliver the owner a satisfactory quality project.Most of the quality problems of construction projects appear in the construction stage.Therefore,we must strictly control the quality in project construction,strengthen the whole process management from the organization and management,find a project quality management system suitable for China’s national conditions,and be able to eliminate the hidden quality hazards in the project in time to ensure the project The construction project can meet the target requirements,and the project quality can be effectively controlled.This article mainly analyzes the current problems affecting the construction quality,combined with the actual analysis,and then find some countermeasures to solve the problem.展开更多
In Saint-Louis, Senegal, a constructed wetland with horizontal flow reed beds (FHa and FHb) has demonstrated significant efficacy in treating municipal wastewater. Analyzing various treatment stages, the system showed...In Saint-Louis, Senegal, a constructed wetland with horizontal flow reed beds (FHa and FHb) has demonstrated significant efficacy in treating municipal wastewater. Analyzing various treatment stages, the system showed only a slight temperature variation, from an influent average of 26.3°C to an effluent of 24.7°C. Electrical conductivity decreased from 1331 mS/cm to 974.5 mS/cm post-primary treatment, with suspended solids (SS) dramatically reduced from 718.9 mg/L to 5.7 mg/L in the final effluent. Biochemical oxygen demand (BOD5) and chemical oxygen demand (COD) saw a notable decrease, from initial levels of 655.6 mg/L and 1240 mg/L to 2.3 mg/L and 71.3 mg/L, respectively. Nitrogenous compounds (N-TN) and phosphates () also decreased significantly, indicating the system’s nutrient removal capacity. Microbiological analysis revealed a reduction in fecal coliforms from 7.5 Ulog/100ml to 1.8 Ulog/100ml and a complete elimination of helminth eggs. The presence of Phragmites and Typha was instrumental in enhancing these reductions. The system’s compliance with the Senegalese standards for disposal into natural environments, WHO recommendations for unrestricted water reuse in irrigation, and the European legislation for water reuse was established. The effluent quality met the stringent criteria for various classes of agricultural reuse, illustrating the system’s potential for sustainable water management. This wetland model presents a robust solution for water-stressed regions, ensuring environmental protection while supporting agricultural needs. The study calls for ongoing research to further refine the system for optimal, reliable wastewater treatment and water resource sustainability.展开更多
Global concerns toward environmental issues have induced growing demand for new approaches in the construction because of its considerable impact on the environment and use of natural resources. Through using construc...Global concerns toward environmental issues have induced growing demand for new approaches in the construction because of its considerable impact on the environment and use of natural resources. Through using construction sustainability tools, methods and techniques, a greener design can be applied during various building phases. In this connection, it is argued that the analytical and integrated models applied by Building Information Modelling (BIM) may also facilitate this process to be performed more efficiently. BIM and construction sustainability are quite different initiatives, but both have received much attention in recent years in the architecture, engineering and construction (AEC) industry. A rigorous analysis of the interactions between them implies that a synergy exists which, if properly it is understood that can be helpful to reduce the environmental impacts of the AEC industry. A BIM-based design model can contribute to sustainability through its three main dimensions which are environmental, economic and social. In this paper, by reviewing the existing literature on BIM and construction sustainability and using a matrix to analyze construction sustainability dimensions and BIM functionalities a number of interactions have been discussed. It can be concluded that despite there are many improvements in implementation of BIM in environmental and economic aspects of sustainability, its potential impact on social dimension has not been explicitly explored hence further studies need to be undertaken in this area.展开更多
A complete scheme for solving the key scientific problems associated with high-standard,high-intensity continuous construction of high arch dams was presented. First,based on a coupling analysis of construction system...A complete scheme for solving the key scientific problems associated with high-standard,high-intensity continuous construction of high arch dams was presented. First,based on a coupling analysis of construction system decomposition and coordination for a high arc dam,a mathematical model for real-time control of construction quality and progress that considers complex constraints was developed. Second,a method of progress control was proposed based on a dynamic simulation. Third,a dynamic quality control mechanism was established based on construction information collected using a PDA. Fourth,a system for integrating collected information,progress simulation and quality control analyses under a network environment was developed. Finally,these methods were applied to a practical project to show that each aspect of a construction process can be managed effectively and that real-time monitoring and feedback control can be realized. Our methods provide new theoretical principles and technical measures for quality and progress control in the high arc dam construction process.展开更多
文摘Urbanization has led to the rapid development of the construction industry.However,this has also led to higher requirements for the construction engineering management.Other than the quality monitoring of engineering construction,the energy-saving properties of the building should also be considered.Therefore,a scientific management approach should be adopted to improve green building management.This paper primarily examines the importance of quality management in green building construction,along with the factors influencing it.It also identifies the quality issues present in current green building construction.Finally,it proposes measures for quality management in the green building construction process to facilitate the industry’s healthy development.
文摘In recent years,the quality of people’s lifestyle has significantly increased when the speed of social and economic development is accelerating.Among them,the management of city water supply and drainage construction quality can provide the necessary guarantee for the improvement of people’s quality of life,so the scientific of construction quality management will also become the focus of urban modernization.However,there are many problems in the management of water supply and drainage construction quality in cities after considering the real situation.If the problems are not solved as soon as possible,it will affect people’s daily life and works badly and also restrict the development of urbanization.Therefore,the implementation and practical of city water supply and drainage construction quality management are very important.Based on this,the main research content of this article is about the city water supply and drainage construction quality management and to elaborate the existed common problems and raises up some technical points and hopes that this article content can help in the management of drainage construction quality.
文摘At present,China’s bridges are mostly made of concrete,which contain a large amount of cement,sand and gravel and other materials,which can easily cause environmental pollution.At the same time,China’s total steel production continues to rank first in the world.The construction and development of steel bridges have sufficient basic support.At the same time,steel is more environmental-friendly than concrete,with higher strength,lower weight,and can reduce construction waste significantly,so the development of steel bridges has been on the rise.To optimize the application effect of steel structure bridges,it is necessary to analyze the construction management and installation quality control strategies of steel bridges for reference.
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The steel structure construction is an interesting option to the already established concrete structure at a time when the Brazilian civil construction seeks more efficiency.To promote the use of this material it is necessary to have a better understanding of its characteristics and,especially,of its possible pathologies,to avoid degradation,costs,and even the collapse of the structure.In this study Total Quality Management tools were applied to analyze the pathologies found in five medium and large steel-structured buildings.The most frequent ones were structure corrosion,cracks in the closures,and infiltrations in the interface closure/structure.The Ishikawa Diagram is used to identify the origin of the causes of pathologies and the Gravity Urgency Tendency Matrix(GUT Matrix)is used in the risk analysis of each pathology.The results obtained show that it is possible,through these Quality Management tools,to understand the origin of the pathologies,establishing their dangerousness and the degree of risk each one offers.
文摘With the increase in the number and scale of tunnel projects in China in recent years,the comprehensive management for quality inspection and monitoring measurement in the tunnel construction process is receiving more and more attention.Based on this,this paper analyzes the comprehensive management of quality inspection and monitoring during tunnel construction to ensure the quality of tunnel construction.
文摘The waterproof construction of subway tunnels is a crucial and challenging aspect of subway tunnel engineering.Mastering excellent waterproof construction technology is essential to ensure that the construction meets design requirements and guarantees the safe operation of subway lines.This paper focuses on discussing waterproof construction technology for subway station tunnels.By analyzing the main methods and techniques of underground tunnel construction,as well as the key techniques and difficulties of waterproofing construction,this paper examines the waterproofing construction project of Guangzhou Metro Culture Park Station as a case study.It analyzes the methods,quality management practices,and safety management strategies applied in the project.This paper serves as a reference for tunnel engineering design and construction units in our country,offering insights into effective waterproof construction techniques for subway tunnels.
文摘With the continuous advancement of China's urbanization process,the demand for construction projects is increasing,which is both an opportunity and a challenge for construction companies.If the enterprises themselves can grasp the background and policy conditions to maintain a high level of construction engineering,then its enterprise benefits and future development prospects will be excellent.However,there are also many companies whose own reputation and actual benefits have been affected for poor engineering quality caused by poor construction management.This is exactly what we must pay attention to.This article will analyse and explore the relevant work to improve the engineering quality of different phases of engineering construction and to guide the management of the construction unit in the future from the perspective of the construction unit to strengthen the project quality supervision.
文摘Quality is the life of architecture.Without quality there is nothing.Engineering projects have the characteristics of large investment and long construction period,so the quality of construction projects must be strictly controlled.The control of construction quality of engineering projects is the quality control of the whole process and the participation of all employees.It is the implementation of construction engineering quality regulations and mandatory standards,the correct configuration of construction production management elements and the use of scientific management methods to achieve the expected use function of engineering projects And quality standards,deliver the owner a satisfactory quality project.Most of the quality problems of construction projects appear in the construction stage.Therefore,we must strictly control the quality in project construction,strengthen the whole process management from the organization and management,find a project quality management system suitable for China’s national conditions,and be able to eliminate the hidden quality hazards in the project in time to ensure the project The construction project can meet the target requirements,and the project quality can be effectively controlled.This article mainly analyzes the current problems affecting the construction quality,combined with the actual analysis,and then find some countermeasures to solve the problem.
文摘In Saint-Louis, Senegal, a constructed wetland with horizontal flow reed beds (FHa and FHb) has demonstrated significant efficacy in treating municipal wastewater. Analyzing various treatment stages, the system showed only a slight temperature variation, from an influent average of 26.3°C to an effluent of 24.7°C. Electrical conductivity decreased from 1331 mS/cm to 974.5 mS/cm post-primary treatment, with suspended solids (SS) dramatically reduced from 718.9 mg/L to 5.7 mg/L in the final effluent. Biochemical oxygen demand (BOD5) and chemical oxygen demand (COD) saw a notable decrease, from initial levels of 655.6 mg/L and 1240 mg/L to 2.3 mg/L and 71.3 mg/L, respectively. Nitrogenous compounds (N-TN) and phosphates () also decreased significantly, indicating the system’s nutrient removal capacity. Microbiological analysis revealed a reduction in fecal coliforms from 7.5 Ulog/100ml to 1.8 Ulog/100ml and a complete elimination of helminth eggs. The presence of Phragmites and Typha was instrumental in enhancing these reductions. The system’s compliance with the Senegalese standards for disposal into natural environments, WHO recommendations for unrestricted water reuse in irrigation, and the European legislation for water reuse was established. The effluent quality met the stringent criteria for various classes of agricultural reuse, illustrating the system’s potential for sustainable water management. This wetland model presents a robust solution for water-stressed regions, ensuring environmental protection while supporting agricultural needs. The study calls for ongoing research to further refine the system for optimal, reliable wastewater treatment and water resource sustainability.
文摘Global concerns toward environmental issues have induced growing demand for new approaches in the construction because of its considerable impact on the environment and use of natural resources. Through using construction sustainability tools, methods and techniques, a greener design can be applied during various building phases. In this connection, it is argued that the analytical and integrated models applied by Building Information Modelling (BIM) may also facilitate this process to be performed more efficiently. BIM and construction sustainability are quite different initiatives, but both have received much attention in recent years in the architecture, engineering and construction (AEC) industry. A rigorous analysis of the interactions between them implies that a synergy exists which, if properly it is understood that can be helpful to reduce the environmental impacts of the AEC industry. A BIM-based design model can contribute to sustainability through its three main dimensions which are environmental, economic and social. In this paper, by reviewing the existing literature on BIM and construction sustainability and using a matrix to analyze construction sustainability dimensions and BIM functionalities a number of interactions have been discussed. It can be concluded that despite there are many improvements in implementation of BIM in environmental and economic aspects of sustainability, its potential impact on social dimension has not been explicitly explored hence further studies need to be undertaken in this area.
基金supported by the National Basic Research Program of China("973"Project)(Grant No.2007CB714101)the National Key Technology R&D Program in the11th Five-year Plan of China(Grant No.2008BAB29B0501)the National Natural Science Foundation of China(Grant No.90815019)
文摘A complete scheme for solving the key scientific problems associated with high-standard,high-intensity continuous construction of high arch dams was presented. First,based on a coupling analysis of construction system decomposition and coordination for a high arc dam,a mathematical model for real-time control of construction quality and progress that considers complex constraints was developed. Second,a method of progress control was proposed based on a dynamic simulation. Third,a dynamic quality control mechanism was established based on construction information collected using a PDA. Fourth,a system for integrating collected information,progress simulation and quality control analyses under a network environment was developed. Finally,these methods were applied to a practical project to show that each aspect of a construction process can be managed effectively and that real-time monitoring and feedback control can be realized. Our methods provide new theoretical principles and technical measures for quality and progress control in the high arc dam construction process.