盾构转弯时与土体相互关系分析  

Analysis of the relationship between shield turning and soil mass

作　　者：崔小普 CUI Xiao-pu(College of Civil Engineering,Hebei University of Engineering,Handan 056038,China)

机构地区：[1]河北工程大学土木工程学院,河北邯郸056038

出　　处：《山东工业技术》2020年第6期79-82,共4页Journal of Shandong Industrial Technology

摘　　要：为了研究盾构转弯时土体抗力与位移关系的影响,本文采用大型有限元软件,建立小半径线路转弯过程中盾构机与土体的二维有限元模型,探究盾构机的直径、埋深对土体抗力与位移关系的影响。结果表明:土体抗力随着直径和埋深的增加而增加,在两者的共同影响下发展更为显著;达到主动与被动极限状态时的水平位移与埋深比值较大。In order to study the influence of soil resistance and displacement relation when shield is turning, large-scale finite element software is used in this paper to establish a two-dimensional finite element model of the shield machine and soil mass in the course of small radius route turning, and to explore the influence of the diameter and burial depth of the shield machine on the relation between soil resistance and displacement. The results show that the soil resistance increases with the increase of diameter and burial depth, and the development is more significant under the joint influence of both. The ratio of horizontal displacement to buried depth is larger when reaching active and passive limit state.

关 键 词：盾构转弯 土体抗力 位移 有限元模型 

分 类 号：U455.43[建筑科学—桥梁与隧道工程]