上海中心大厦主楼深大圆基坑施工风险分析及应对措施.pdf

2012年9月下 施工技术 第41卷第373期 CONSTRUCTION TECHNOLOGY 35 上海中心大厦主楼深大圆基坑施工 风险分析及应对措施 王学知 (上海建科工程咨询有限公司，上海200032) [摘要]首先对软土地区深基坑工程的常规性风险进行分析，然后结合上海中心大厦主楼深基坑工程具体情况，对 主楼深基坑及地下连续墙进行受力简化分析，进而提出分析基坑内外土体分布情况、控制围护结构施工质量、监测 坑内水位、控制基坑开挖方式、检查周边堆载情况及重视监测数据分析等风险应对措施，降低了深基坑工程的风 险，保证了基坑工程顺利实施. [关键词]高层建筑；地下工程；软土地区；基坑；地下连续墙；风险分析 [中图分类号]TU753 [文献标识码]A [文章编号]1002-8498(2012)18-0035-04 Risk Analysis and Control Measures for Large-deep Circular Foundation Excavation in Main Building of Shanghai Tower Wang Xuezhi Shanghai Jianke Engineering Consulting Co.Ltd.Shanghai 200032 China) Abstract:The conventional risk of deep foundation excavation in soft soil area is analyzed.Then on the base of actual conditions of the foundation excavation in Shanghai Tower Main Building the stress analysis is done for the deep foundation excavation.Furthermore the risk control measures are put forward to reduce the risk of deep foundation excavation and ensure the foundation safety such as analyzing on soil distribution of soils surrounding the foundation excavation methods controlling construction quality of the support structures monitoring the water level in the foundation excavation controlling the excavation methods checking the loads surrounding the foundation excavation and emphasizing on the analysis of monitoring data. Key words:tall buildings;underground;soft soil area;foundation excavation;diaphragm wall; risk analysis 随着城市化进程的不断推进，基坑的开挖面积质条件不同，即便同一区域地质条件也有差异，地 越来越大，开挖深度也越来越深，基坑周边建筑物、，质条件的复杂性、不均匀性，造成勘察数据具有很 道路桥梁、地...