运用因果连锁链,对上海市部分塔机事故案例进行了调查与分析,找到事故原因,建立了塔机施工的风险分类,并对各种风险进行特征描述和发生频率统计,用因果分析图对导致塔机事故发生的各种风险因素进行归纳、分析。 Using causal chains, the accident cases of some tower cranes in Shanghai were investigated and analyzed to find out the cause of the accident. The risk classification of tower crane construction was established, and the characterization and frequency statistics of various risks were carried out. With causal analysis The various risk factors that led to the tower crane accident are summarized and analyzed.