市政技术2025，Vol.43Issue(12)：39-45,7.DOI:10.19922/j.1009-7767.2025.12.039
承插式盾构隧道接缝防水性能研究
Study on the Waterproofing Performance of Socket-type Shield Tunnel
摘要
Abstract
To address the problems of joint leakage in complex urban underground environments,a study is conducted on the mechanical response and waterproofing of socket-type shield tunnel joints under complex geological conditions.a 3D refined numerical model that accounts for soil-structure interaction and nonlinear joint contact behavior was established by ABAQUS software in this study.By integrating of the waterproof performance tests with numerical simulations,the deformation of the surrounding strata of the tunnel,the stress distribution of the segmental lining,the leakage characteristics of the joints and the impact of different operating conditions on the waterproofing perfor-mance were systematically analyzed.The results indicate that under the combined action of self-weight,ground pressure and groundwater pressure,the socket-type shield tunnel exhibits an overall"transverse elliptical"defor-mation pattern.The contact pressure of socket joints is uneven under the coupled action of axial force and bending moment,with the maximum joint opening of 2.6 mm;Waterproof tests show that when the joint opening is 3 mm and the joint offset is 0 mm,the ultimate waterproof pressure of the EPDM sealing gasket reaches 1.25 MPa,meeting the waterproof design requirements for a tunnel with a buried depth of 50 m.There're the maximum displacement and obvious stress concentration at the bottom of the joints,and prone to leakage and crushing.This research has impor-tant engineering significance for improving the durability and waterproof reliability of socket-type shield tunnels.关键词
盾构隧道/力学响应/接缝张开/三维精细化数值模型/防水性能Key words
shield tunnel/mechanical response/joint opening/3D refined numerical model/waterproofing perfor-mance分类
交通工程引用本文复制引用
张明海,张琪,王飞阳..承插式盾构隧道接缝防水性能研究[J].市政技术,2025,43(12):39-45,7.基金项目
上海申通地铁集团有限公司创新青年科研项目(QN24R012) （QN24R012）
