Study On Construction Risk Analysis Theory And Method Of Subway Station

From the actual needs of the subway station construction projects,in this thesis,the construction risk analysis theory and methods of subway station are studied with the aim of building the basic system of construction risk analysis of subway station.At the same time, the basic principles of construction risk treatment and supervision of subway station are discussed.The main research contents and innovation of this thesis are summarized as below:(1) On the basis of risk being cognized and basic principles and methods of risk analysis being discussed,considering the actual situation of subway station,the basic frame of construction risk analysis theory of subway station is built.(2) From the actual needs of the construction risk analysis of subway station,the conceptual model of risk system is built.And under the conceptual model of risk system,the occurrence mechanism of the construction risk of subway station is analyzed and revealed.(3) The principle of construction risk identification for subway station is discussed. Then the construction risk factor and lost modes of subway station are analyzed and concluded.FAHP is proposed to identify the construction risk of subway station.Moreover, the basic principle and process are discussed and demonstrated.(4) The principle and methods of construction risk estimation for subway station are discussed.Then the definitions of probability and aftereffect of construction risk are defined. Moreover,the quantitative estimation of construction risk is carried out.(5) The principle and methods of construction risk assessment for subway station are discussed.Then the construction risk system is established,which contains risk assessment matrix,risk acceptance criteria and assessment standard of risk level.The assessment of construction risk is implemented from the aspects of risk probability and aftereffect.(6) The basic principles of construction risk treatment and supervision are discussed. The treatment strategy and measure are constituted aiming at 5 chief risk factors in the construction time.The supervision conceptual model of construction risk is established.