软土地区盾构掘进引起地表沉降变形计算与分析  

Analysis of the Ground Deformations Induced by the Shielded Tunneling in Soft Soils

作　　者：徐学勇[1,2] 樊延强[1] 宋庆晓 黄强[1] 俞演明[1] 

机构地区：[1]中国水电顾问集团华东勘测设计研究院,杭州310014 [2]中国科学院武汉岩土力学研究所 岩土力学与工程国家重点实验室,武汉430071 [3]青岛中德生态园联合发展有限公司,山东青岛266555

出　　处：《土工基础》2013年第4期80-82,共3页Soil Engineering and Foundation

基　　金：国家自然科学基金项目(No.41101519);华东勘测设计研究院科研项目(KY2011-02-17-01)

摘　　要：在软土地区盾构施工会扰动地层,开展地表沉降变形计算和分析,对保证盾构施工安全有着重要的意义。结合某盾构穿越海塘工程实例,采取理论解析法和数值模拟进行地表沉降变形计算和分析。计算结果表明,两种方法得到的结果基本一致,地表最大沉降分别为8.8mm和9.2mm,盾构穿越不会破坏海塘整体稳定性。计算结果可为工程设计和施工提供理论依据,也可为类似工程提供参考。Shielded tunneling in the soft soils will induce the disturbance in soil strata, change the original stress conditions as well as break the initial equilibrium state. As a result, the ground surface will settle with various magnitudes. The analysis of the ground surface deformation is important to a safe tunneling construction. This paper presents a case history of a shielded tunneling project underneath a seawall. The ground deformations are monitored and numerically simulated. The maximum ob- served de[ormation is 8.8 mm whereas a maximum of 9.2 mm ground settlement is numerically predicted.

关 键 词：地下工程 盾构隧道 地表沉降 PECK公式 数值模拟 

分 类 号：TU433[建筑科学—岩土工程]