多圆盾构土体位移特征及其应用  

The Characteristics of Soil Displacement Induced by the Multi-Circular Face Shield and the Application of the Displacement Formula

作　　者：孙统立[1] 李浩[1] 韦良文[2] 

机构地区：[1]江苏省交通规划设计院股份有限公司,南京210005 [2]重庆交通大学,重庆400074

出　　处：《现代隧道技术》2012年第5期34-38,43,共6页Modern Tunnelling Technology

摘　　要：文章以日本某深埋地铁车站工程为例,基于修正的Loganathan公式,运用叠加原理,建立了多圆盾构施工扰动引起土体位移的计算公式,分析了多圆盾构施工扰动引起的地表沉降、土体深层沉降、侧向位移特征。结果表明,计算值与实测值吻合较好,其修正的Loganathan公式适用于计算多圆盾构施工扰动引起的土体位移,多圆盾构横向地表沉降特征基本符合正态分布。所得结论对于多圆盾构工法在我国的进一步运用具有一定的借鉴作用。Based on the modified Loganathan＇s formula, the analytic formulas of soil displacement induced by the multi-circular face （MF） shield are established by means of the superposition principle. Using a deep metro station in Japan as an example, the characteristics of surface settlement, subsurface settlement, and lateral displacement caused by construction disturbance of the MF shield are revealed. The outcomes clearly demonstrate that the computation values are consistent with that of the in-situ monitoring, so the computation method is applicable to analyzing the ground displacement character of the MF shield. The transverse surface displacement curves of the MF shield basically agree with the Gaussion＇s equation.

关 键 词：多圆盾构 施工扰动 位移特征 

分 类 号：U456.31[建筑科学—桥梁与隧道工程] U455.43[交通运输工程—道路与铁道工程]