徐庆锋, 金拯, 来灵捷,等.伺服支撑调控深开挖引发支护结构变形及旁侧隧道位移的效果研究[J].河南理工大学学报（自然科学版）,2026,45(4):58-66.

XU Q F, JIN Z, LAI L J,et al.Study on the effect of servo strut control on retaining structure deformation and adjacent tunnel displacement induced by deep excavation[J].Journal of Henan Polytechnic University(Natural Science) ,2026,45(4):58-66.

伺服支撑调控深开挖引发支护结构变形及旁侧隧道位移的效果研究

徐庆锋1, 金拯1, 来灵捷2,3, 陈子艺2, 应宏伟2

1.杭州市电力设计院有限公司， 浙江 杭州  310014;2.河海大学 岩土力学与堤坝工程教育部重点实验室，江苏 南京  210098;3.浙江省建筑设计研究院有限公司，浙江 杭州  310008

摘要: 目的 分析伺服支撑对深基坑开挖时旁侧既有隧道的位移影响。  方法依托杭州某软土深基坑工程建立二维有限元数值模型，采用小应变硬化本构模型模拟土体行为，研究采用钢筋混凝土双围檩伺服支撑主动变形调控技术后的围护墙变形模式及其对基坑旁侧既有盾构隧道位移和变形的影响，划分相应的开挖引起旁侧隧道位移的影响分区，并与未采用伺服支撑的常规墙体变形模式下的位移影响分区进行对比。 结果 模拟结果表明，采用伺服支撑技术且设置较大支撑力阈值的情况下，围护墙变形呈现S形，与常规内凸变形有明显区别。伺服支撑作用下，浅层旁侧隧道发生朝向坑外的水平位移，而较深位置的隧道则仍随墙体发生朝向坑内的水平位移，最大水平位移仍发生在靠近坑壁的坑底附近；隧道埋深较浅时，距离坑壁较近处表现为沉降，而距离坑壁较远处表现为轻微隆起，隧道以水平收敛为主；隧道埋深较大时，隧道变形主要表现为竖向收敛。  结论 采用伺服支撑调控技术对距离基坑较近的隧道位移控制效果明显，但对远离基坑且埋深较浅的隧道位移控制效果有限。

关键词:伺服支撑;基坑开挖;地铁隧道;变形模式

doi:10.16186/j.cnki.1673-9787.2026030013

基金项目:国家自然科学基金资助项目（51678523）；浙江大有集团有限公司科研项目（DY2023-03）

收稿日期:2026/03/11

修回日期:2026/05/14

出版日期:2026/06/17

Study on the effect of servo strut control on retaining structure deformation and adjacent tunnel displacement induced by deep excavation

Xu Qingfeng1, Jin Zheng1, Lai Lingjie2,3, Chen Ziyi2, Ying Hongwei2

1.Hangzhou Electric Power Design Co.， Ltd.，Hangzhou  310014， Zhejiang， China;2.Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering， Hohai University， Nanjing  210098， Jiangsu， China;3.Zhejiang Province Institute of Architectural Design and Research， Hangzhou  310008， Zhejiang， China

Abstract: Objectives The influence of servo strut control on the displacement of adjacent existing tunnels during deep excavation was analyzed.  Methods A two-dimensional finite element numerical model， based on a deep excavation project in soft soil in Hangzhou， was established. The small-strain hardening constitutive model was used to simulate soil behavior. The deformation mode of the retaining wall after applying the active deformation control technology using reinforced concrete double-waling servo struts was studied， along with its influence on the displacement and deformation of an adjacent existing shield tunnel. The influence zone of tunnel displacement induced by excavation was delineated and compared with that under the conventional wall deformation mode without servo struts.  Results The simulation results show that when the servo strut technology is applied with a relatively large strut force threshold， the retaining wall deforms in an S-shape， which is significantly different from the conventional inward convex deformation mode. Under servo strut control， shallow adjacent tunnels experience horizontal displacement away from the excavation， while tunnels located at greater depths still undergo horizontal displacement toward the excavation along with the wall. The maximum horizontal displacement still occurs near the excavation bottom close to the wall. When the tunnel is shallow， settlement occurs near the wall and slight heave occurs farther away； the tunnel deformation is dominated by horizontal convergence. When the tunnel is deeply buried， the tunnel deformation is mainly characterized by vertical convergence.  Conclusions The servo strut control technology is significantly effective in controlling the displacement of tunnels located very close to the excavation， but its effectiveness is limited for tunnels that are farther away and shallowly buried.

Key words:servo strut;excavation;metro tunnels;deformation patterns