With the gradual acceleration of the urbanization process,the construction industry has been developing rapidly.As the key link to ensure the quality and safety of the project,construction management and construction ...With the gradual acceleration of the urbanization process,the construction industry has been developing rapidly.As the key link to ensure the quality and safety of the project,construction management and construction quality control are of great significance to enhance the competitiveness of construction enterprises and realize sustainable development.In this paper,the effective strategy of construction management and the effective strategy of construction quality control will be discussed in depth,aiming at providing useful management and quality control strategies for construction enterprises.展开更多
The theory and method of system integration for the real-time monitoring of core rock-fill dam filling con- struction quality are studied in this paper. First, the importance analysis of system integration factors is ...The theory and method of system integration for the real-time monitoring of core rock-fill dam filling con- struction quality are studied in this paper. First, the importance analysis of system integration factors is carried out with the analytic hierarchy process. Then, according to the analysis result of integration factors, the conceptual model of system integration is built based on function integration, index integration, technology integration and information integration, the index structure of core rock-fill dam filling construction quality control is constructed and the method of function integration and technology integration is studied. The mathematical model of process monitoring is built according to monitoring objective, process and indexes. Research results have been applied in Nuozhadu core rock-fill dam construction management, realizing system integration through building appropriate monitoring work flow and comprehensive information platform of digital dam.展开更多
To improve the quality of the Hong Kong–Zhuhai–Macao Bridge paving project,a new paving layer material,Guss-mastic asphalt(GMA),was proposed in this paper by combining the advantages of two types of cast asphalt mix...To improve the quality of the Hong Kong–Zhuhai–Macao Bridge paving project,a new paving layer material,Guss-mastic asphalt(GMA),was proposed in this paper by combining the advantages of two types of cast asphalt mixtures:mastic asphalt(MA)and Guss asphalt(GA).Based on the characteristics of GMA,to simulate its actual production process,this study developed a small-simulated cooker mixing equipment.Moreover,the flow degree,60C dynamic stability,and impact toughness were proposed to be used to evaluate the construction and ease,high temperature stability,and fatigue resistance of GMA cast asphalt mixtures,respectively.Moreover,the quality control standards for GMA paving materials by indoor tests,field trial mix GMA material performance tests,and accelerated loading tests were finalized.The study showed that the developed simulated cooker yielded consistent mixing results in the same working environment as the engineering cooker device.Increasing the coarse aggregate incorporation rate,coarsening the mastic epure(ME)gradation composition,and using a smaller oil to stone ratio can reduce the flowability of the GMA materials to varying degrees.The four-point bending fatigue life and impact toughness of the different GMA materials are correlated well.A mobility of<20 s,60C dynamic stability of 400–800 times/mm,15C impact toughness of400 N⋅mm,and cooker car mixing temperature control standard of 210C–230C form an appropriate control index system for the design and production of GMA cast asphalt mixtures.Simultaneously,accelerated loading tests verified the accuracy and reliability of the quality control index system that has been used in the GMA paving project of the Hong Kong–Zhuhai–Macao Bridge deck and has achieved good application results.展开更多
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 considered as one of the most important elements in the construction industry. The factors affecting quality in the construction industry should be assessed. This paper aims to introduce a new model to asse...Quality is considered as one of the most important elements in the construction industry. The factors affecting quality in the construction industry should be assessed. This paper aims to introduce a new model to assess these factors. The model is namely Fuzzy Assessment Model for Quality （FAMQ）. Fuzzy set theory provides a useful way to deal with ill-defined and complex problems in a decision-making environment that incorporates vagueness. The proposed model employs the combined effect of both; the factors probability of occurrence and their impacts on the quality of construction. Twenty five logical rules for each factor were implemented in the model. The model was evaluated using data that collected from the infrastructure projects in Egypt. It was applied to many factors that affect the quality of this kind of projects as a case study. The results of the study proved that the proposed model can be used successfully in the assessment of factors affecting quality in the construction industry. In addition, the results provided a platform of useful assessment reference to those infrastructure＇s finns, who plan to establish their businesses in Egypt.展开更多
Bridge bearings are a small part of the whole bridge structure,but it can affect the corner of the bridge,and the stability and quality of the bridge deck,so the performance of the bridge bearing can directly determin...Bridge bearings are a small part of the whole bridge structure,but it can affect the corner of the bridge,and the stability and quality of the bridge deck,so the performance of the bridge bearing can directly determine the quality and lifespan of the entire bridge.The bridge bearing connects the upper and lower parts of the whole bridge.In order to improve the quality and structure of the whole bridge,the layout and selection of bridge bearings needs to be done well,the construction process needs to be closely monitored,and the whole process needs to be well-managed.The existing problems should be analyzed in detail and solved in time to ensure the quality of the bridge project.展开更多
In order to improve the construction quality and steadily promote the improvement in the level of the construction industry,this paper expounds BIM-based strategies for construction quality control.This paper first id...In order to improve the construction quality and steadily promote the improvement in the level of the construction industry,this paper expounds BIM-based strategies for construction quality control.This paper first identifies the factors affecting the construction quality,analyzes the advantages and value of the application of BIM in construction,and finally analyzes the scenario of applying BIM for future references.展开更多
If the indoor drainage pipe is blocked and the drainage is not smooth,sewage and pollutants will enter the room and endanger human health.If the pipeline is blocked as a result,a certain intensity of water pressure ma...If the indoor drainage pipe is blocked and the drainage is not smooth,sewage and pollutants will enter the room and endanger human health.If the pipeline is blocked as a result,a certain intensity of water pressure may be brought,which may cause pipeline leakage.In this article,we will analyze and explain the quality problems that often occur during the construction process due to the blockage of the internal drainage pipe,and propose appropriate methods and solutions to improve the quality of the project.展开更多
The Whole-Process People’s Democracy has become an important proposition of the socialist modernization democratic theory with Chinese characteristics,and has important value for the development of the new form of hu...The Whole-Process People’s Democracy has become an important proposition of the socialist modernization democratic theory with Chinese characteristics,and has important value for the development of the new form of human civilization.The Whole-Process People’s Democracy is not only a“democracy”system,its focus is to achieve“people’s democracy”,its unique feature is to surpass“non process”democracy with the“Whole-Process”,and create a new governance path of a new form of human civilization.Of course,the emphasis of people’s democracy on the consciousness of people’s subjective participation in the whole process also puts forward corresponding requirements for the cultural quality construction of Chinese social citizens in the new era,so it is also of great significance to pay attention to the cultivation of citizens’public spirit.展开更多
The Supervision during construction of Thailand PTA Co-generation, Which was contracted by our country extended into the quality guaranteed period. The supervision during the quality guaranteed period includes the mon...The Supervision during construction of Thailand PTA Co-generation, Which was contracted by our country extended into the quality guaranteed period. The supervision during the quality guaranteed period includes the monitor of the operation and maintenance of power plant,organization of subcontractor to treat the problems and defects occurred in the field in time, technical consultancy and communication in time, delivery of spare parts, and assistance of clearing Contractor’s quality deposit. It is proved by the practice that it is necessary to early out the supervision during quality guaranteed period.展开更多
In order to promote the rapid development of urbanization in our country,it is necessary to improve the construction level and technology of bridge engineering.For long-span continuous bridge technology,it has the cha...In order to promote the rapid development of urbanization in our country,it is necessary to improve the construction level and technology of bridge engineering.For long-span continuous bridge technology,it has the characteristics of wide application range,various applicable conditions,and short construction period.Therefore,it is necessary to pay attention to the application of long-span continuous bridge technology.This article mainly analyzes its application in bridge construction,hoping to provide some reference for future use.展开更多
The article analysis of construction surface decoration quality, construction interior wall decoration quality, the construction of exterior wall tile adhesive quality and construction of aluminium alloy exterior qual...The article analysis of construction surface decoration quality, construction interior wall decoration quality, the construction of exterior wall tile adhesive quality and construction of aluminium alloy exterior quality problems, and points out the corresponding prevention measures on the problem. Finally, for wall cracks, the paper put forward the improvement measures.展开更多
Lack of trust has been an ongoing issue for decades in construction quality management,hindering the improvement of quality performance.The development of mutual trust depends on immutable,traceable,and transparent co...Lack of trust has been an ongoing issue for decades in construction quality management,hindering the improvement of quality performance.The development of mutual trust depends on immutable,traceable,and transparent construction quality information records.However,current information technologies cannot meet the requirements.To address the challenge,this study explores a blockchain-based framework for construction quality information management,which extends applications of blockchain in the domain of construction quality management.A consortium blockchain system is designed to support construction quality management in which participants’information permissions and lifecycle are discussed.Additionally,this study presents in detail the consensus process that aims to address the problem of information fraud.The automated compliance checking based on smart contracts is presented as well,aiming to assure that construction products meet regulation requirements.Finally,an example of the consortium blockchain network is visualized to validate the feasibility of blockchain-based construction quality information management.The research shows that blockchain can facilitate mutual trust in construction quality management by providing distributed,encrypted,and secure information records and supporting automated compliance checking of construction quality.展开更多
Precast reinforced concrete buildings have been well received in some seismic zones worldwide due to advantages such as the ease and the speed of implementation,and the possibility of working in inappropriate atmosphe...Precast reinforced concrete buildings have been well received in some seismic zones worldwide due to advantages such as the ease and the speed of implementation,and the possibility of working in inappropriate atmospheric conditions.In this research,seismic fragility curves were developed for precast concrete frames with a cast-in-situ concrete shear-wall,concerning the important issues of modeling the precast beam-column joints,construction quality,and soil type effects.For this purpose,the incremental dynamic analysis(IDA)was conducted for three-dimensional models of 3-,5-,and 8-story buildings under two record sets corresponding to soil types C and D of the NEHRP code.Beam-column joints were modeled using nonlinear rotational springs with rigid links with respect to the finite size of the joint panel.Results demonstrate that the Weibull distribution can be fitted to the damage state capacities better than the lognormal distribution at the intensities that are more than one standard deviation away from the median damage capacity.The seismic vulnerability of precast structures increases at all damage states as the height of the building increases.It is also observed that soil type has almost no considerable effect on the fragility curve parameters for all damage states considered herein.展开更多
文摘With the gradual acceleration of the urbanization process,the construction industry has been developing rapidly.As the key link to ensure the quality and safety of the project,construction management and construction quality control are of great significance to enhance the competitiveness of construction enterprises and realize sustainable development.In this paper,the effective strategy of construction management and the effective strategy of construction quality control will be discussed in depth,aiming at providing useful management and quality control strategies for construction enterprises.
基金National Key Technology R&D Program in the 12th Five Year Plan of China (No. 2011BAB10B06)Independent Innovation Foundation of Tianjin University (No. 1102119)
文摘The theory and method of system integration for the real-time monitoring of core rock-fill dam filling con- struction quality are studied in this paper. First, the importance analysis of system integration factors is carried out with the analytic hierarchy process. Then, according to the analysis result of integration factors, the conceptual model of system integration is built based on function integration, index integration, technology integration and information integration, the index structure of core rock-fill dam filling construction quality control is constructed and the method of function integration and technology integration is studied. The mathematical model of process monitoring is built according to monitoring objective, process and indexes. Research results have been applied in Nuozhadu core rock-fill dam construction management, realizing system integration through building appropriate monitoring work flow and comprehensive information platform of digital dam.
文摘To improve the quality of the Hong Kong–Zhuhai–Macao Bridge paving project,a new paving layer material,Guss-mastic asphalt(GMA),was proposed in this paper by combining the advantages of two types of cast asphalt mixtures:mastic asphalt(MA)and Guss asphalt(GA).Based on the characteristics of GMA,to simulate its actual production process,this study developed a small-simulated cooker mixing equipment.Moreover,the flow degree,60C dynamic stability,and impact toughness were proposed to be used to evaluate the construction and ease,high temperature stability,and fatigue resistance of GMA cast asphalt mixtures,respectively.Moreover,the quality control standards for GMA paving materials by indoor tests,field trial mix GMA material performance tests,and accelerated loading tests were finalized.The study showed that the developed simulated cooker yielded consistent mixing results in the same working environment as the engineering cooker device.Increasing the coarse aggregate incorporation rate,coarsening the mastic epure(ME)gradation composition,and using a smaller oil to stone ratio can reduce the flowability of the GMA materials to varying degrees.The four-point bending fatigue life and impact toughness of the different GMA materials are correlated well.A mobility of<20 s,60C dynamic stability of 400–800 times/mm,15C impact toughness of400 N⋅mm,and cooker car mixing temperature control standard of 210C–230C form an appropriate control index system for the design and production of GMA cast asphalt mixtures.Simultaneously,accelerated loading tests verified the accuracy and reliability of the quality control index system that has been used in the GMA paving project of the Hong Kong–Zhuhai–Macao Bridge deck and has achieved good application results.
文摘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 considered as one of the most important elements in the construction industry. The factors affecting quality in the construction industry should be assessed. This paper aims to introduce a new model to assess these factors. The model is namely Fuzzy Assessment Model for Quality （FAMQ）. Fuzzy set theory provides a useful way to deal with ill-defined and complex problems in a decision-making environment that incorporates vagueness. The proposed model employs the combined effect of both; the factors probability of occurrence and their impacts on the quality of construction. Twenty five logical rules for each factor were implemented in the model. The model was evaluated using data that collected from the infrastructure projects in Egypt. It was applied to many factors that affect the quality of this kind of projects as a case study. The results of the study proved that the proposed model can be used successfully in the assessment of factors affecting quality in the construction industry. In addition, the results provided a platform of useful assessment reference to those infrastructure＇s finns, who plan to establish their businesses in Egypt.
文摘Bridge bearings are a small part of the whole bridge structure,but it can affect the corner of the bridge,and the stability and quality of the bridge deck,so the performance of the bridge bearing can directly determine the quality and lifespan of the entire bridge.The bridge bearing connects the upper and lower parts of the whole bridge.In order to improve the quality and structure of the whole bridge,the layout and selection of bridge bearings needs to be done well,the construction process needs to be closely monitored,and the whole process needs to be well-managed.The existing problems should be analyzed in detail and solved in time to ensure the quality of the bridge project.
文摘In order to improve the construction quality and steadily promote the improvement in the level of the construction industry,this paper expounds BIM-based strategies for construction quality control.This paper first identifies the factors affecting the construction quality,analyzes the advantages and value of the application of BIM in construction,and finally analyzes the scenario of applying BIM for future references.
文摘If the indoor drainage pipe is blocked and the drainage is not smooth,sewage and pollutants will enter the room and endanger human health.If the pipeline is blocked as a result,a certain intensity of water pressure may be brought,which may cause pipeline leakage.In this article,we will analyze and explain the quality problems that often occur during the construction process due to the blockage of the internal drainage pipe,and propose appropriate methods and solutions to improve the quality of the project.
基金This paper is the phased research result of the project“The Centennial Exploration Process and Innovative Development of the Communist Party of China on the Marxist Concept of Problems”(Project No.:nkxj21110104)of the Tianjin Collaborative Innovation Center of Basic Principles of Marxism in 2021The phased research results of the topic“Research on Common Prosperity and the Promotion of Democratic Process in the New Era”(Project No.:2022xs-0068)of the Independent Innovation Fund(social influence project)of Tianjin University in 2022.
文摘The Whole-Process People’s Democracy has become an important proposition of the socialist modernization democratic theory with Chinese characteristics,and has important value for the development of the new form of human civilization.The Whole-Process People’s Democracy is not only a“democracy”system,its focus is to achieve“people’s democracy”,its unique feature is to surpass“non process”democracy with the“Whole-Process”,and create a new governance path of a new form of human civilization.Of course,the emphasis of people’s democracy on the consciousness of people’s subjective participation in the whole process also puts forward corresponding requirements for the cultural quality construction of Chinese social citizens in the new era,so it is also of great significance to pay attention to the cultivation of citizens’public spirit.
文摘The Supervision during construction of Thailand PTA Co-generation, Which was contracted by our country extended into the quality guaranteed period. The supervision during the quality guaranteed period includes the monitor of the operation and maintenance of power plant,organization of subcontractor to treat the problems and defects occurred in the field in time, technical consultancy and communication in time, delivery of spare parts, and assistance of clearing Contractor’s quality deposit. It is proved by the practice that it is necessary to early out the supervision during quality guaranteed period.
文摘In order to promote the rapid development of urbanization in our country,it is necessary to improve the construction level and technology of bridge engineering.For long-span continuous bridge technology,it has the characteristics of wide application range,various applicable conditions,and short construction period.Therefore,it is necessary to pay attention to the application of long-span continuous bridge technology.This article mainly analyzes its application in bridge construction,hoping to provide some reference for future use.
文摘The article analysis of construction surface decoration quality, construction interior wall decoration quality, the construction of exterior wall tile adhesive quality and construction of aluminium alloy exterior quality problems, and points out the corresponding prevention measures on the problem. Finally, for wall cracks, the paper put forward the improvement measures.
基金the National Natural Science Foundation of China(Grant Nos.71732001,51878311,and 51978302).
文摘Lack of trust has been an ongoing issue for decades in construction quality management,hindering the improvement of quality performance.The development of mutual trust depends on immutable,traceable,and transparent construction quality information records.However,current information technologies cannot meet the requirements.To address the challenge,this study explores a blockchain-based framework for construction quality information management,which extends applications of blockchain in the domain of construction quality management.A consortium blockchain system is designed to support construction quality management in which participants’information permissions and lifecycle are discussed.Additionally,this study presents in detail the consensus process that aims to address the problem of information fraud.The automated compliance checking based on smart contracts is presented as well,aiming to assure that construction products meet regulation requirements.Finally,an example of the consortium blockchain network is visualized to validate the feasibility of blockchain-based construction quality information management.The research shows that blockchain can facilitate mutual trust in construction quality management by providing distributed,encrypted,and secure information records and supporting automated compliance checking of construction quality.
文摘Precast reinforced concrete buildings have been well received in some seismic zones worldwide due to advantages such as the ease and the speed of implementation,and the possibility of working in inappropriate atmospheric conditions.In this research,seismic fragility curves were developed for precast concrete frames with a cast-in-situ concrete shear-wall,concerning the important issues of modeling the precast beam-column joints,construction quality,and soil type effects.For this purpose,the incremental dynamic analysis(IDA)was conducted for three-dimensional models of 3-,5-,and 8-story buildings under two record sets corresponding to soil types C and D of the NEHRP code.Beam-column joints were modeled using nonlinear rotational springs with rigid links with respect to the finite size of the joint panel.Results demonstrate that the Weibull distribution can be fitted to the damage state capacities better than the lognormal distribution at the intensities that are more than one standard deviation away from the median damage capacity.The seismic vulnerability of precast structures increases at all damage states as the height of the building increases.It is also observed that soil type has almost no considerable effect on the fragility curve parameters for all damage states considered herein.
