顶管施工下穿桥梁引桥的影响分析  

Impact Analysis of Pipe Jacking Construction Underneath a Bridge Approach

作　　者：童雪雪 崔翔 TONG Xuexue;CUI Xiang(College of Urban Construction,Anhui Xinhua University,Hefei 230088,China;Sinochem Geological Jiangsu Geotechnical Engineering Limited Company,Nanjing 210000,China)

机构地区：[1]安徽新华学院城市建设学院,安徽合肥230088 [2]中化地质江苏岩土工程有限公司,江苏南京210000

出　　处：《徐州工程学院学报(自然科学版)》2025年第1期7-15,71,共10页Journal of Xuzhou Institute of Technology(Natural Sciences Edition)

基　　金：安徽省高等学校自然科学研究重点项目(2023AH051819,2022AH051860,2024AH050623);安徽新华学院建筑重点实验室校级项目(KLBSZD202101)。

摘　　要：作为地下非开挖方法之一的顶管法在推进进程中会对周围土体产生影响,这种影响严重时会对周围的建筑物或者构筑物产生危害.以某地区顶管施工下穿长江大桥引桥为背景,采用MIDAS/GTS三维有限元软件对顶管施工下穿桥梁引桥的全过程进行模拟分析,研究了地表沉降变化、顶管变形情况及对桥梁产生的影响.结果表明:地表最大沉降约为0.57 mm,集中在始发井地表区域;桥梁整体沉降均匀且小,满足设计要求.该研究为顶管施工下穿桥梁引桥专项保护方案提供了科学依据.The pipe jacking method is one of the trenchless underground construction methods that has the potential to exert influence on surrounding soil during advancement.When such impacts become significant,they may potentially endanger adjacent buildings or structures.This paper employed MIDAS/GTS three-dimensional finite element software to simulate and analyze the entire construction process of pipe jacking construction beneath the approach bridge of Yangtze River Bridge in a specific area.The study investigated surface settlement variations,deformation characteristics of pipe jacking structures,and their impacts on the bridge.The results indicate that the maximum surface settlement reached approximately 0.57 mm,concentrated in the ground area near the launching shaft.The bridge exhibited uniform and minimal overall settlement,meeting design requirements.This research provides a scientific basis for formulating special protection schemes for pipe jacking construction beneath bridge approach structures.

关 键 词：下穿桥梁 地表沉降 顶管施工 

分 类 号：TU455[建筑科学—岩土工程]