上海某轨道交通深基坑工程施工风险评估

首先根据深基坑工程地质特点和周围建筑物情况采用WBS方法对上海某超长轨道交通基坑工程工作结构进行分解,采用故障树法对风险事件和风险因素进行识别,应用综合集成风险评估方法进行风险评估,得出各类基坑的风险等级。该系统评估方法可应用到类似超长轨道线路工程的风险评估。

Construction risk assessment on deep foundation pits of a metro line in Shanghai

To effectively assess the construction risk of deep foundation pits in an ultimate-length metro line in Shanghai,the WBS method was brought forward to break down the work of deep foundation pits based on the engineering geological conditions and the condition of nearby buildings and infrastructure facilities in the deep foundation pits.Then its risk events and factors of construction of deep foundation pits were identified by use of the fault tree method.Finally,the construction risk degrees of all kinds of deep foundation pits were evaluated and decided in accordance with the general integration risk assessment method based on the AHP method.The above system method could be used to evaluate the risk degree of similar ultimate-length metro railway lines.