Research On Safety Evaluation Of Bridge Construction Based On Fuzzy Comprehensive Evaluation

Bridge is the main part of the transportation in our country,is the foundation of social progress and economic development,and also is an important business card for our country to go to the world.With the improvement of bridge construction requirements,the construction difficulty keeps increasing,and the construction team’s construction technology level and safety management level requirements are also constantly improving.However,limited by many factors,the safety management level of construction projects in China needs to be improved.Safety evaluation,a modern safety management method,is conducive to the construction enterprises to grasp the construction risk accurately,to improve the safety factor of construction,to adjust the safety management work,and enhance the enterprise’s safety management level and economic benefits.This paper analyzes and studies the current bridge construction safety evaluation methods through the literature search method,and finds out that there are some shortcomings in the current bridge construction safety evaluation methods,such as strong subjectivity,unreasonable evaluation indexes and limited scope of use,which make the results of safety evaluation not scientific and reasonable.In order to make bridge construction safety evaluation more scientific and reasonable,it is necessary to perfect the evaluation index system and introduce new evaluation methods.Therefore,this paper’s research is mainly aimed at two aspects,the bridge construction safety evaluation index is not perfect and the evaluation method is too subjective.Firstly,the literature search method and Delphi method are used to perfect the evaluation indexes of bridge construction safety.Secondly,the comparative analysis method is used to compare and analyze the current common methods of safety evaluation and the methods to determine the index weight.The fuzzy comprehensive evaluation method is chosen for the bridge construction safety overall comprehensive evaluation,the G1 method combined with the structure entropy weight method is used to determine the index weight method.Then the weight assignment method and the comprehensive evaluation method are used to assign the weight of the index and construct the fuzzy comprehensive evaluation model.Finally,that evaluation model is verified by a practical case.The verification results show that it is feasible in practical projects.