Research On Simply Supported Bridge Engineering Construction Safety Risk Theory

Since China's reform and opening-up,the infrastructure construction of our country have fast development.The scale of the construction of the bridge is greatly improved.At the same time,because of the bridge construction involves gorges and underwater operation.The construction is facing the complex environment,which makes the bridge facing many unknown hazards in construction process.Security issues are also increasingly prominent.In order to reduce the occurrence of safety accidents,ensure the smooth development of bridge construction and protect the safety of workers,we need to identify the hazard in construction project.So this article is based on Xiangyang Zuojiawan bridge in Hubei city,and gives analysis of the safety risk assessment of the construction process.The main research contents and relevant conclusions are as follows:(1)Through the literature reading about construction safety management at home and abroad,this paper expounds the basic theory and application of risk management and point out the problems existing in the bridge construction risk management now,and analyze the general process of bridge construction safety risk assessment.(2)Summarizes the factors that affect the overall risk of bridge construction safety body,and the corresponding evaluation index is established.it has established the overall bridge construction safety risk assessment index system,with the analytic hierarchy process(AHP)to determine the weight of corresponding indexes,to demonstrate the specific evaluation process.(3)Screening out the main risk source,and summarizes the types of the accident before construction.Through risk matrix method to screen the operation project with greater risk.And use the fuzzy comprehensive evaluation method of grey system theory to assess the special risk.(4)Analyze a risk of construction safety conformity,and maked a specific protective measures.The article put forward specific protective measures for accidents of many types.More risk of construction safety,The construction technology prepared special program of safety technology.That would reduced the probability of anccident.