contributor author | Hu Qijun;Shi Rendan;Hu Yi;Cai Qijie;Qu Mengfei;Zhao Wen;He Leping | |
date accessioned | 2019-02-26T07:53:53Z | |
date available | 2019-02-26T07:53:53Z | |
date issued | 2018 | |
identifier other | %28ASCE%29CF.1943-5509.0001165.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4250136 | |
description abstract | In this paper, safety evaluation for tunnels through steeply inclined strata in cold regions is proposed, for evaluating the safety of lining structures with existing or underlying frost heave damage. Laboratory model tests are performed to investigate the distribution characteristics of the frost heave force that acts on the lining structure, which plays an important role in the assessment of safety. The sidewall frost heave model is determined as the most fitting frost heave model in steeply inclined strata based on the available experimental data. The stress increments under frost heave can be obtained by applying the sidewall frost heave model to numerical simulations. Specifically, the maximum stress in the lining structure mainly includes two parts: the initial maximum stress under self-weight and the stress increment from the frost heave. The safety factor can be calculated through the ratio of the lining material’s strength to the maximum stress in a worst-case scenario. Finally, the practicality of the safety evaluation method is confirmed through an examination of the Balang Mountain tunnel in Southwest China. | |
publisher | American Society of Civil Engineers | |
title | Method to Evaluate the Safety of Tunnels through Steeply Inclined Strata in Cold Regions Based on the Sidewall Frost Heave Model | |
type | Journal Paper | |
journal volume | 32 | |
journal issue | 4 | |
journal title | Journal of Performance of Constructed Facilities | |
identifier doi | 10.1061/(ASCE)CF.1943-5509.0001165 | |
page | 4018030 | |
tree | Journal of Performance of Constructed Facilities:;2018:;Volume ( 032 ):;issue: 004 | |
contenttype | Fulltext | |