Construction Safety Evaluation of Prefabricated Components Hoisting Based on WSR-IM
Compared with the traditional hoisting construction,the construction safety risk of assembly building is more diverse and complicated.In order to accurately and effectively evaluate the safety risk state of prefabricated building,the key risk factors were identified,and the model of the cause of safety accident in prefabricated building was constructed from the perspective of multi-factor coupling.Based on the responsibility perspective of the construction company,20 risk factors of hoisting con-struction of prefabricated components were identified and selected by WSR methodology from three as-pects of"physico-event-human",and then an improved interaction matrix was constructed for risk coupling analysis by using C-OWA operator,which can reduce the influence of subjective factors.Fi-nally,an example is given to verify the practicability of the method,and the results show that the o-verall risk level of the project is strong,so the project manager should pay attention to the prevention and control of the hoisting risk of prefabricated components,and control the high-weight risk factors in the construction process by taking effective defensive measures to reduce the probability of major safety accidents.
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