安全与环境工程2024，Vol.31Issue(4)：75-83,9.DOI:10.13578/j.cnki.issn.1671-1556.20221329
公路隧道衬砌空洞病害力学行为模型试验研究
Experimental study on mechanical behavior model of highway tunnel lining cavity diseases
摘要
Abstract
Affected by engineering geological conditions,design and construction technology and operation and maintenance level,most of the early highway tunnels in China have different forms of defects.The problem of highway tunnel lining diseases is becoming increasingly prominent.As the main manifestation of lining diseases,lining cavities seriously threaten the safety and stability of tunnels.Therefore,aiming at the typical tunnel lining cavity disease,this paper takes Wushan tunnel project as an example.In view of the mechanical characteristics of the tunnel lining structure in the process of shrinkage reinforcement and com-mon tunnel lining diseases,the comprehensive test method was adopted.The stress behavior of tunnel lin-ing structure under the influence of cavities at different positions,depths and lengths behind the lining un-der in-situ stress during operation period was studied.The results show that the lining cavity diseases of Wushan tunnel are mainly distributed at the vault.The main reasons for the occurrence of voids are the ag-ing of concrete with the increase of service life and the defects of local construction quality.The influence of the arch crown and empty roof behind the lining on the stress state of the lining structure is greater than that at other positions.The increase of the depth and length of the cavity behind the lining will lead to the increase of lining inner wall stress at the cavity,while the change of other positions is small.关键词
公路隧道/衬砌空洞病害/室内模型试验/力学行为Key words
highway tunnel/lining cavity disease/indoor model test/mechanical behavior分类
资源环境引用本文复制引用
全小娟,赵亚峰,熊凌浩,蒋楠,周传波..公路隧道衬砌空洞病害力学行为模型试验研究[J].安全与环境工程,2024,31(4):75-83,9.基金项目
国家自然科学基金项目(41972286、42072309、42102329) （41972286、42072309、42102329）
