超大直径盾构机械法联络通道施工地层多次扰动特性分析  

Analysis of Stratum Disturbance Characteristics of Cross-passages Mechanical Construction on Super-large Diameter Shield Tunnel

作　　者：张哲 郑镇跡 欧阳剑 史庆涛 曾庆成 黄书华 ZHANG Zhe;ZHENG Zhenji;OUYANG Jian;SHI Qingtao;ZENG Qingcheng;HUANG Shuhua(China Railway 14th Bureau Group Large Shield Engineering Co.,Ltd.Nanjing 211800,China;Shenzhen University Shenzhen 518060,China;Guangzhou Expresssway Co.,Ltd.Guangzhou 510335,China;China Railway 14th Bureau Group Co.,Ltd.Jinan 250000,China)

机构地区：[1]中铁十四局集团大盾构工程有限公司,南京211800 [2]深圳大学,深圳518060 [3]广州海珠湾建设有限公司,广州510335 [4]中铁十四局集团有限公司,济南250000

出　　处：《广东土木与建筑》2025年第3期22-26,共5页Guangdong Architecture Civil Engineering

基　　金：中铁十四局集团有限公司科研项目(QTHT-HZ-WSD-00163)。

摘　　要：为探究双线隧道及机械法联络通道施工多次扰动下地表沉降变形规律,以广州市海珠湾超大直径盾构机械法联络通道工程为背景,首先利用有限元软件Plaxis3D建立三维分析模型模拟双线隧道及机械法联络通道施工全过程,其次为验证数值模拟结果的准确性,利用修正后的Peck叠加公式计算多次扰动下地表沉降曲线并与数值模拟结果进行对比分析。结果表明:在较硬地层中,联络通道开挖对地层变形影响较小,地表沉降变化最大值约为1.08mm,总体而言施工安全可控。两种计算结果呈现出的横向地表沉降规律基本吻合,地表最大沉降值都出现在先行开挖的左线隧道,且两者差值小于5%。In order to explore the surface settlement deformation law under multiple disturbances during the construction of double track tunnels and mechanical method connecting channels,taking the Guangzhou Haizhu Bay super large diameter shield tunneling mechanical method connecting channel project as the background,a three-dimensional analysis model was first established using the finite element software Plaxis 3D to simulate the entire construction process of double track tunnels and mechanical method connecting channels.Secondly,in order to verify the accuracy of the numerical simulation results,a calculation of the surface settlement curve under multiple disturbances using the modified Peck superposition formula was performed and compared with the numerical simulation results.The results show that in harder strata,the excavation of the connecting passage has a relatively small impact on the deformation of the strata.The lateral surface settlement patterns presented by the two calculation results are basically consistent,and the maximum surface settlement values appear in the left line tunnel excavated first,with a difference of less than 5%between the two.

关 键 词：联络通道 机械法 数值模拟 地表沉降 PECK公式 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]