地铁深基坑施工风险分析与评价

Risk Analysis and Evaluation of Subway Deep Excavation

地铁深基坑施工过程中存在诸多风险,需要对这些风险进行科学分析与评价。因此,基于模糊理论和故障树法形成了模糊故障树法,给出了风险分析与评价的具体思路和过程,再以某地铁深基坑为评价对象,归纳出了诸多风险因素,并用模糊故障树法分析了施工风险。通过分析,得出了各个风险因素的排名,又与该工程实际采用的风险评价方法进行了对比,得出了2种方法具有较大一致性的结论。

It’s important to analyze and evaluate scientifically the risks because there are many ones in the process of subway deep excavation.The fuzzy fault tree analysis method is formed on the basis of fuzzy theory and fault tree method.Specific ideas and process of the method are given as well as many risk factors.Taking a subway deep founda tion pit as the evaluation object,its construction risk is analyzed in this way.The fuzzy fault free analysis method is established.The ranking of all construction risks is obtained by fuzzy fault free analyzing.Compared with the practical risk assessment methods,results of the fuzzy fault free analysis method show that the two methods are highly consistent.According to the evaluation results,efficient suggestions and measures of construction management are given in four aspects.