| The quality of building engineering influenced countries and people's lives and property,so our government attached great importance to quality management in construction industry,and implemented a series of quality management methods and techniques. However, as thetheory and method of construction project quality management was not perfect and otherreasons, it was difficult to control the situation of low quality in construction projects, eventhough the government, some construction companies and research institutions paid a lot ofwork to improve the quality of construction products. For the reason, we must strive toexplore new models and methods of building project quality management for truly effectivelyimproving the qualityof construction products.In the process of exploring the theory and method about quality management ofconstruction projects, most of the previous research was about the theory of qualitymanagement, lack of quantitative analysis approach. During the actual quality management ofconstruction project, the reference value providing by the theories research was very small,not have powerful operability. System dynamics method has been widely applied to variousareas of society, and has made some research achievements in the construction project riskmanagement, resource management, cost control and so on, but in the application ofconstruction project quality management is still blank. Therefore, the thesis attempts tocombine the SD rate variable fundamental in-tree modeling method with the theory ofconstruction project quality management, and do some research on quality control ofsingle-pile's vertical bearing capacityabout manual excavating pile foundation.The single-pile's vertical bearing capacity is influenced by geological conditions aroundthe pile foundation, the pile material strength and other factors, so there is the differentialbetween the actual value and the design value of it. For this reason, the thesis first finds outthe possible affecting factors of single-pile's vertical bearing capacity about manualexcavating pile foundation, which takes advantage of the"fishbone diagram"method inconstruction project quality management; then finds the mutual restraint and influencerelationship between the factors in the quality control system of single-pile's vertical bearingcapacity; the system is divided into five sub-systems: they are single-pile's vertical bearingcapacity sub-system, friction resistance around the pile sub-system, bottom resistance of thepile sub-system, geological conditions around the pile sub-system and the pile materialsub-system, and then the structural model of the system is built by means of SD rate variablefundamental in-tree modeling method; finally, the thesis selects the manual excavating pile foundation ZH-2B of No.13 teaching building in East China Jiaotong University for research,estimates the required parameters in the model through data collection and processing, andestablishes the equation for all variables, when the quantitative simulation model of thesystem has been built, it is imported into the software Vensim PLE to simulate, and then thethesis analyzes the output simulation results of each sub-system.The thesis visualizes the quality management of construction project as a process whichis dynamic and includes information feedback, from the system point of view, and makesclear that it is feasible for applying system dynamics to quality management of constructionproject. System dynamics for quality management of construction project can broaden theresearch thought of construction project quality management, and make up the deficiency ofexisting methods. In addition, it may provide basis for quality control of single-pile's verticalbearing capacity and be used as complementary research methods of single-pile's verticalbearing capacity , for selecting quality control of single-pile's vertical bearing capacity aboutmanual excavating pile foundation as the research object. |
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