Risk Assessment On Subway Station Construction In Soft Soil Area

As a basic prerequisite for prevention and mitigation of major risks,risk assessment has its advantages and necessity.Society and enterprises pay more and more attention to risk cognition and management,and mature and effective scientific assessment methods have extremely important research and application value.This paper introduces the research status of underground engineering risk assessment both at home and abroad,summarizes the significance and application value of risk assessment,compares the commonly used risk assessment methods in engineering construction projects,and analyzes its advantages and disadvantages.The evaluation index system for metro station construction in soft soil area was established,and qualitative analysis and quantitative analysis of metro station construction cases in a soft soil area were made with AHP,fuzzy comprehensive evaluation method and Bayesian network method.Research and analysis,the scientific risk assessment results obtained,verify each other the scientific method of evaluation,applicability,to ensure the accuracy of the results.In this paper,FLAC3 D finite element computer simulation software is used to simulate the subway station construction in a soft soil area.The deformation process and the displacement result are obtained.Then the risk and safety feasibility of the construction are evaluated.