双线隧道盾构机侧穿时古石塔地基及塔身变形规律研究  

Deformation of the Foundation and Tower Body of Ancient Stone Tower When Double-line Shield Tunneling Beside the Tower

作　　者：孟娟[1,2] 颜庭成 陈晓飞[1,2] 高新南 MENG Juan;YAN Tingcheng;CHEN Xiaofei;GAO Xinnan(Non-ferrous Metal East China Geological Exploration Bureau of Jiangsu Province,Nanjing 210007,China;Jiangsu Huadong Geological Construction Group Co.Ltd.,Nanjing 210007,China;Nanjing Agricultural University,Nanjing 210031,China)

机构地区：[1]江苏省有色金属华东地质勘查局,南京210007 [2]江苏华东地质建设集团有限公司,南京210007 [3]南京农业大学,南京210031

出　　处：《河南科学》2020年第4期626-631,共6页Henan Science

基　　金：国家自然科学基金青年科学基金项目(51408319)。

摘　　要：随着城市轨道交通的快速发展,盾构隧道穿越古建筑等情况越来越多.以杭州市某盾构双线隧道侧穿古石塔为例,采用FLAC3D数值模拟软件建立三维模型,对盾构穿越过程中对石塔地基变形及塔身变形进行了研究.通过分析得知:盾构推进至石塔正侧方时,地表最大沉降点位于隧道与石塔之间,偏向石塔一侧;全过程中地表最大沉降值出现在离石塔最近处隧道盾尾远离石塔后;石塔倾斜主要表现为垂直隧道掘进轴线方向.With the rapid development of urban rail traffic,there are more and more cases of shield tunnels passing ancient buildings.Taking a double-line shield tunnel passing beside the ancient stone tower in Hangzhou as an example,based on FLAC3D numerical analysis,deformation of stone tower foundation and tower body induced by shield tunnel construction are discussed.The results show that:When the shield is pushed to the bottom of the stone tower,the maximum settlement point of the surface is located between the tunnel and the stone tower,which is inclined the side of the stone tower;The maximum settlement value of the surface appears after the shield tail of the tunnel which is away from the stone tower;The tilt of the stone tower is mainly manifested in the direction of the vertical tunneling axis.

关 键 词：盾构隧道 古石塔 数值模拟 变形 

分 类 号：U452.1[建筑科学—桥梁与隧道工程]