摘要
盾构隧道开挖面支护力的大小是影响开挖面稳定性的重要因素,而盾构隧道开挖面失稳模式则是确定支护力大小的基础。文中从模型实验法和数值模拟方法论述了盾构隧道开挖面的失稳模式及破坏形态,在此基础上总结了隧道开挖面的支护力计算模型及计算方法,经历了三角形楔形体模型、梯形楔形体模型、半圆台+半圆柱楔形体模型和倒棱台楔形体模型的发展阶段,并归纳了支护力修正计算方法,可为盾构隧道开挖面的失稳模式研究及支护力计算提供借鉴和启发作用。
The supporting force of shield tunnel excavation face is an important factor affecting the stability of excavation face. The instability mode of shield tunnel face is the basis to determine the supporting force. Therefore,the instability mode and failure mode of the face of shield tunnel are discussed by means of model experiment and numerical simulation. Herein, the supporting force calculation model and calculation method of tunnel excavation face are summarized. The development stages of triangular wedge model, trapezoidal wedge model, semi-circular and semi-cylindrical wedge model and inverted pyramid wedge model as well as the supporting force correction calculation method are summarized. It can be used as supporting force of shield tunnel excavation calculation and stability study provides reference and inspiration effect.
作者
管晓明
金昕
GUAN Xiaoming;JIN Xin(School of Civil Engineering,Qingdao University of Technology,Shandong Qingdao 266033,China)
出处
《低温建筑技术》
2021年第9期113-117,共5页
Low Temperature Architecture Technology
关键词
隧道工程
盾构开挖
支护力
极限平衡法
tunnel engineering
shield excavation
supporting force
limit equilibrium method
