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基坑开挖引起下卧隧道位移的实测分析
Influence Analysis of Deep-dip Excavation on Down Tunnel Based on the Measured Displacement
【Author】 LI Zhi-gao, LIU Hao, WU Xiao-jiang, BI Hai-ming ( Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; ( Jinan Design and Research Institute of the Coal Industry Ministry, Jinan 250031, China)
【机构】 同济大学地下建筑与工程系； 煤炭工业部济南设计研究院；
【摘要】 通过对东方路下立交工程现场监测数据分析,得到了基坑开挖卸荷引起下方隧道纵向变形的总体规律和时空效应规律,推导了考虑时空效应影响的隧道隆起经验计算方法。用公式S=A1*eA2/B可以简单估算开挖时间和开挖宽度下基坑开挖引起隧道隆起的最大值。
【Abstract】 Based on measured settlement in the Dongfang Road Underpass Project, some genenral laws and time -space effects laws of tunnel longitudinal deformation, which is resulted from the above deep excavation, were obtained. The empirical formula, taking time-space effect into account, is derived to calculate the tunnel’s upheaval, and the formula, S = A1 * eA2/B, can be used simply to calculate the max upheaval of the tunnel.
【Key words】 relief； rebound； residual stress； time-space effect； deep pit；
- 【会议录名称】 上海软土地深基坑技术新进展研讨会论文集
- 【会议名称】上海软土地深基坑技术新进展研讨会
- 【会议时间】2005-09
- 【会议地点】中国上海
- 【分类号】TU753;U452.11
- 【主办单位】上海市力学会岩土力学专业委员会、上海土木工程学会土力学与岩土工程专业委员会