复合地层盾构施工数值模拟及沉降机理——以福州地铁滨海快线为例  

Numerical Simulation and Settlement Mechanism of Shield Tunneling Construction in Composite Strata:Taking the Fuzhou Metro Binhai Express Line as an Example

作　　者：谢智 陈仁盛 林志建 张伟 XIE Zhi;CHEN Rensheng;LIN Zhijian;ZHANG Wei(Xiamen Branch of CCCC Third Navigation Engineering Bureau Co.,Xiamen 361021,Fujian,China;School of Civil Engineering,Fujian University of Technology,Fuzhou 350118,China)

机构地区：[1]中交第三航务工程局有限公司厦门分公司,福建厦门361021 [2]福建理工大学土木工程学院,福州350118

出　　处：《科技和产业》2025年第3期37-45,共9页Science Technology and Industry

基　　金：福建省自然科学基金面上项目(2021J011062)。

摘　　要：为探究盾构施工对复合地层的扰动机理,以复杂地层滨海复合地层为例,依托福州滨海快线,基于有限元分析软件ABAQUS建立盾构施工精细化数值模型,考虑开挖掌子面力、注浆压力、千斤顶顶推力及刀盘扭矩4个参数,通过现场监测数据验证模型,对实际工程中盾构施工横穿的5种复合土层地层沉降规律进行研究。结果表明:离盾构机开挖区域越近,受扰动影响越大;隧道横穿复合地层对其中较软的一层会产生更大的切削,增大土体扰动。In order to explore the disturbance mechanism of shield construction on composite strata,taking the coastal composite strata as an example,and relying on the Fuzhou Coastal Line,the disturbance mechanism of shield tunneling in composite strata was investigated.A refined numerical model of shield tunneling was established based on the finite element analysis software ABAQUS,and four parameters were considered,including face support pressure,grouting pressure,jack thrust,and cutterhead torque.After validating the model with on-site monitoring data,the settlement patterns of five composite strata traversed by the shield tunneling in the actual project were examined.The results show that the closer to the excavation area of the shield machine,the greater the disturbance;when the tunnel passes through composite strata,it causes more significant cutting in the softer layer,increasing soil disturbance.

关 键 词：盾构施工 复合地层 有限元 现场监测 沉降规律 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]