北京交通大学学报2017，Vol.41Issue(1)：41-48,8.DOI:10.11860/j.issn.1673-0291.2017.01.007
运营隧道裂损衬砌置换后新结构受力特性测试
Mechanical characteristics test on the new structures after cracked lining replacement in an operating tunnel
摘要
Abstract
In order to analyze the applicability of lining replacement method,the mechanical characteristics of the new structures were tested in-situ after the replacement of cracked linings based on the reinforcement engineering of a second class highway tunnel.The test results are as follow.The contact pressures between original initial supports and the newly constructed secondary linings are smaller,whose values are lower than the calculated values of surrounding rock relaxed pressure,and the contact pressures are not equally distributed.The internal force distribution law of the secondary linings is similar with that of the contact pressures,and the axial forces and moments of the secondary linings are overall smaller,which shows that the new secondary linings have not worked evidently after lining replacement,and the lining replacement method used in the supported engineering are not necessary.According to the test results and the actual conditions of lining replacement construction,the necessities of lining replacement method are discussed,and the appropriate conditions and construction notifications of this method are also given in this paper.关键词
隧道工程/裂损衬砌/衬砌置换/受力特性/现场测试/结构内力Key words
tunnel engineering/cracked lining/lining replacement/mechanical characteristic/in-situ test/structure internal force分类
交通工程引用本文复制引用
张素磊,刘昌,张顶立..运营隧道裂损衬砌置换后新结构受力特性测试[J].北京交通大学学报,2017,41(1):41-48,8.基金项目
国家自然科学基金青年科学基金项目(51408554) （51408554）
河南省教育厅科学技术研究重点项目(14B560026)National Natural Science Foundation of China(51408554) （14B560026）
Science and Technology Research Key Project of the Education Department of Henan Province(14B560026) （14B560026）
