岩土工程学报2026，Vol.48Issue(z2)：63-67,5.DOI:10.11779/CJGE2026S20019
列车荷载引起的软弱地层盾构隧道长期沉降计算
Calculation and analysis of long-term settlement of shield tunnel in weak stratum induced by train load
摘要
Abstract
With the transformation of urban rail transit from construction period to operation-maintenance period in China,it is essential to study the causes of long-term settlement of shield tunnel in weak strata and its reinforcement measures.Based on the radial cement-soil pile reinforcement technology,Monismith's index model,layered summation method,composite foundation theory and other assumptions,a theoretical model is established to calculate the undrained plastic deformation of reinforced or unreinforced weak stratum under shield tunnel caused by long-term cyclic vibration train load.The applicability of the model is verified by monitoring data from practical engineering cases.Then,the influence of train load on the tunnel long-term settlement,the effect of stratum reinforcement under tunnel on the long-term settlement,and key points to design radial cement-soil pile are studied by parameters analysis.This paper may provide a new theoretical method for analyzing,predicting,and designing reinforcement schemes for mitigating long-term settlement of rail-transit shield tunnels in weak strata induced by train loads.关键词
盾构隧道/长期沉降/列车荷载/塑性变形/径向水泥土桩Key words
shield tunnel/long-term settlement/train load/plastic deformation/radial cement-soil pile分类
建筑与水利引用本文复制引用
李瑛,刘兴旺,谢锡荣,周建,俞峰..列车荷载引起的软弱地层盾构隧道长期沉降计算[J].岩土工程学报,2026,48(z2):63-67,5.基金项目
国家自然科学基金项目(52178365) （52178365）
