Research On The Risk Assessment Of High-rise Building Construction Based On Evidence Theory

With the development of economy and society,the number of domestic high-rise buildings is growing rapidly.Due to complex factors,various safety accidents occur frequently in the construction stage of high-rise buildings.Safety accidents in the construction stage of high-rise buildings cause a lot of negativity.Therefore,it is necessary to effectively identify and scientifically evaluate the construction risks of high-rise buildings,so as to improve the safety management level of construction units,reduce construction risks effectively and realize construction safety.This paper focuses on the risk evaluation of high-rise building construction.Firstly,it analyzes the risk evaluation indexes and evaluation methods of high-rise building construction at home and abroad,combing the research status of evidence theory on the basis of complexity and uncertainty.And it expounds the relevant theories.Secondly,the index system is constructed from the five aspects.Thirdly,it points out the evidence theory’s shortcomings.Using the method of K-L information distance to improve the evidence theory,this paper constructs a high-rise building construction risk evaluation model based on the evidence theory.One is to use COWA operator to determine the weight of risk indicators,making the weight of indicators more objective.The other is making the conflict characteristics of the same index information can be fully identified through the model,and the conflict threshold is set to optimize the index identification,so as to reduce the impact of highly conflicting risk information on the evaluation results.Finally,the applicability and effectiveness of the model in high-rise building construction risk assessment are verified by engineering case analysis.Establishing an objective and scientific construction risk assessment method can improve the professional and technical level of relevant personnel,effectively ensure the smooth implementation of high-rise building construction projects and promote the healthy development of high-rise buildings.Based on this,the research on high-rise building construction risk assessment has important theoretical and practical value.Figure 8;Table 14;Reference 53...