超大规模基坑工程群开挖相互影响的分析与对策

超大规模基坑工程群开挖相互影响的分析与对策 English Version

详细信息

（Department of Underground Structure & Geotechnical Engineering, East China Architecture Design & Research Institute Co., Ltd., Shanghai 200002, China）

摘要: 天津于家堡基坑工程群开挖体量巨大，且面临着多个距离较近的相邻基坑开挖的相互影响问题，采用三维数值模型对基坑工程群的开挖进行模拟，计算结果表明基坑群开挖造成距离较近的基坑之间的坑外地面沉降叠加，并影响支撑轴力的分布。结合计算结果，提出合理的基坑开挖顺序、设计加强建议以及施工控制措施。
- 基坑群 /
- 相互影响 /
- 三维数值分析
Abstract: Yujiabu group excavations cover a huge plan area and meet the problem of interaction among various projects. Different excavation sequences of the group excavations are simulated by means of 3D numerical model. The results show that the superimposed ground settlement occurs among the nearby excavations caused by their excavation, and the distribution of support axial stress is influenced. Some suggestions for excavation sequence and support system and construction control measures are proposed according to the calculated results and analyses.
- group excavation /
- interaction /
- 3-D numerical analysis

[1]	刘国彬, 王卫东. 基坑工程手册[M]. 北京: 中国建筑工业出版社, 2009. (LIU Guo-bin, WANG Wei-dong. Excavation engineering manual[M]. Beijing China. Architecture & Building Press, 2009. (in Chinese))
[2]	王卫东, 吴江斌, 翁其平. 基坑开挖卸载对地铁区间隧道影响的数值模拟[J]. 岩土力学, 2004, 25(增刊): 251–255. (WANG Wei-dong, WU Jiang-bin, WENG Qi-ping. Numerical modeling of affection of foundation pit excavation on metro tunnel[J]. Rock and Soil Mechanics, 2004, 25(S0): 251–255. (in Chinese))