交通标准化Issue(14)：201-204,4.
公路隧道围岩变形破坏理论研究
Deformation Damage Theory of Highway Tunnel Surrounding Rock
尚峰利1
作者信息
- 1. 河北路桥集团有限公司，河北 石家庄 050011
- 折叠
摘要
Abstract
this paper uses the methods of theoretic analysis, simulation, field monitoring and measuring to deeply study deformation damage theory of highway tunnel surrounding rock. This paper gets the relation-ship between damage variable and surrounding material parameter by analyzing the evolution of surround-ing damage in the course of excavation and proposes the method of predicting mechanical parameters of surrounding rocks;by studying rock damage mechanism, the influence scope of surrounding rock damage stress and all of the factors influencing surrounding rock stability, this paper establishes constitutive rela-tionship of surrounding rock damage in unloading condition and damage constitutive model based on ener-gy dissipation. Based on the elastoplastic numerical analysis mechanism, this paper establishes the analy-sis method of tunnel surrounding rock damage evolution in consideration of deterioration course of sur-rounding rock parameters and analyzes the elastoplastic damage evolution mechanism of tunnel surround-ing rock in excavation stress condition;establishes the model of highway tunnel surrounding rock pressure evolution trend and prediction based on experience formula and progressive surrounding rock damage the-ory, and proposes the predicting method of highway tunnel surrounding rock pressure evolution trend.关键词
围岩/变形破坏/弹塑性/演化/预测Key words
surrounding rock/deformation damage/elastoplastic/evolution/prediction分类
交通工程引用本文复制引用
尚峰利..公路隧道围岩变形破坏理论研究[J].交通标准化,2014,(14):201-204,4.
