滨江超大超深基坑施工风险分析与控制

The Risk Analysis and Control of Riverside Oversized Ultra-deep Foundation Construction

在地下空间开发利用的推动下,基坑工程凸显出超大规模、超深开挖的特点。本文结合国际风险评判标准,采用风险管理中故障树和综合模糊评判法等思想,对质量安全风险要素进行评估,得到滨江超大超深基坑施工风险清单。并采用WBS(Work Breakdown Structure:工程分解结构)和RBS(Risk Breakdown Structure:风险分解结构)方法,对上海国际航运服务中心(西块)工程滨江超大超深基坑施工过程中的控制要点进行识别。然后建立了滨江超大超深基坑施工控制的技术体系。最后总结基坑施工控制技术控制体系建立的效果,并对滨江超大超深基坑施工控制效果进行评价。本文旨在对同类型基坑施工在风险分析与控制方面起一定参考作用。

During the development and utilization of underground space,foundation constructions present oversized and ultra-deep characters. Combined with the ideas,such as international risk criteria,the use of risk management in the fault tree and fuzzy comprehensive evaluation method,the quality and safety elements of risk are evaluated,so as to get riverside oversized ultra-deep excavation risk list. By using WBS（ Work Breakdown Structure or Project Breakdown Structure） and RBS（ Risk Breakdown Structure） method,the control points of Riverside oversized ultra- deep foundation construction in Shanghai International Shipping Service Center Project are identified. Furthermore,the riverside oversized ultra-deep foundation construction control technology system is also founded. Lastly,the effect of control system establishment for pit construction control technology is summarized and the control effect of a large ultra-deep excavation is evaluated. This paper is to provide reference resources for the same sort of pit on the aspect of risk analysis and control.