基于Grey-DEMATEL模型的装配式地铁车站施工风险研究

In order to efficiently evaluate the risk factors in the construction process of assembled subway stations and reduce the probability of safety accidents, an improved Grey-Decision-Making Experimental Method (Grey-DEMATEL) is proposed. Firstly, a relatively perfect construction risk evaluation index system of assembled subway station is constructed, which contains 5 first-level indicators and 22 second-level indicators, based on which the degree of mutual influence between risk factors is analyzed, and finally, the centrality is normalized to get the weights of the risk factors, and the fuzzy comprehensive evaluation method is used to carry out the risk evaluation on the construction site of an assembled subway station. The results show that: construction program design, prefabricated components positioning connection reliability, construction personnel safety awareness and professional proficiency are the biggest factors affecting the construction safety of assembly subway station, the construction site risk level is general risk, which is basically consistent with the actual situation. Compared with the hierarchical analysis method, the gray DEMATEL model shows higher efficiency, which proves that this method can be effectively applied to the construction safety risk evaluation of assembled subway stations.