›› 2009, Vol. 30 ›› Issue (9): 2703-2707.

• Geotechnical Engineering • Previous Articles     Next Articles

Risk identification and analysis of subway foundation pit by using fault tree analysis method based on WBS-RBS

ZHOU Hong-bo, GAO Wen-jie, CAI Lai-bing, ZHANG Hui   

  1. Shanghai Jianke Project Management Co., Ltd., Shanghai 200032, China
  • Received:2008-12-08 Online:2009-09-10 Published:2010-03-24

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Abstract:

The engineering environment of subway foundation pit is complex with too many influencing factors; and the analysis of risk factors is incomprehensive due to the uncertainty of risk events in the construction of foundation pit. However, up to now, the conventional risk identification method can’t consider all the risk factors. A risk identification method based on the fault tree analysis (FTA) method is proposed to identify the risk factors with the combination of the work breakdown structure (WBS) and risk break- down structure (RBS). The risk factors or risk events are judged and explained by the coupled analysis of WBS and RBS; and then the fault tree of subway foundation pit risk is established. Furthermore, sensitivity analysis is carried out based on FTA; and then precaution measures of risk events in subway foundation pit are proposed.

Key words: subway foundation pit, fault tree analysis, work breakdown structure (WBS), risk breakdown structure (RBS), risk identification, sensitivity analysis

CLC Number: 

  • U 231+.1
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