摘要：Identifying the causation mechanism of bridge-tunnel hybrid accidents is particularly important to deeply understand the occurrence and causes underlying all kinds of accidents. In response to this problem, this paper makes full use of a large number of accumulated accident cases to develop an accident causation analysis framework based on FISM-DEMATEL to study the relationship between the risks of construction and the mechanism of accident occurrence. The framework uses fuzzy theory to classify the risk factors and the trigger relationships between them contained in the accident, and forms the reachability matrix between risks. Then, the ISM model is used to construct the hierarchical structure between risks and reveal the mechanism of accidents. The importance of risks is quantified with DEMATEL model as well. In the case study based on the data of bridge and tunnel hybrid construction accident cases, the results show that management factors are the most root risks, and the management of human factors and object factors is of significance to cut off the transmission of accident chains. The results also show that the proposed framework is applicable to other single type or hybrid construction projects. Finally, the corresponding management suggestions are offered.
关键词：Safety management;Accident cause analysis;Construction engineering;FISM;DEMATEL
