摘要
盾构隧道的施工和运行过程中,隧道管片变形过大会缩短其使用寿命,甚至发生结构破坏。因此,隧道管片的变形研究尤为重要。现通过数值模拟方法,分析了管片的竖向位移与水平位移的分布规律,发现注入压力和顶推压力与管片的最大变形量成正相关,杨氏模量和埋深则与最大位移量负相关。其中,弹性模量与埋深对管片变形量的影响显著,注浆压力次之,顶推压力最小,可以忽略不计。
In the current construction and operation of shield tunnels,excessive deformation of the tunnel segments will short their service life,even damage the structure.Therefore,it is particularly important to study the deformation of tunnel segments.This study utilizes numerical simulation techniques to analyze the distribution patterns of vertical and horizontal displacements of tunnel segments.The results show that the injection pressure and pushing pressure are positively related to the maximum deformation of the tube segment,and the Young's modulus and buried depth are negatively related to the maximum displacement.Notably,the elastic modulus and buried depth significantly influence segment deformation,followed by the grouting pressure,with the impact of the jacking pressure is the smallest,which can be ignored.
作者
黎程
马林东
李国栋
牟星宇
胡克
LI Cheng;MA Lindong;LI Guodong;MOU Xingyu;HU Ke
出处
《上海公路》
2024年第3期58-62,67,M0005,共7页
Shanghai Highways
关键词
盾构隧道
管片变形
数值模拟
注浆压力
shield tunnel
segment deformation
numerical simulation
grouting pressure
