隧道拱顶衬砌脱空长度对结构安全性影响研究

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【中图分类号】：U451.4 【文献标志码】：A 【文章编号】：1008-3197（2025）04-25-04

【DOI编码】：10.3969/j.issn.1008-3197.2025.04.007

The Effect of Void Length of Tunnel Vault Lining on Structural Safety

WANG Xiang，XIANG Yiheng

（School of Civil Engineering，Chongqing Jiaotong University，Chongqing 4Ooo74，China）

【Abstract】：Aimingatthecommondefectoftunnelliningvoid，fivenumericalmodelsof tunnellining voids withdifrent workingconditions were established based on ABAQUS finite element analysis software.By comparing the changes of structural stressof tunnel models and the characteristics of contact pressure between lining and surrounding rock at different void lengths，this studyquantified therange of actionand stress of tunnel lining structure caused by void at tunnel vault.

【Key words】： tunnel vault;lining void;structural safety

近年来，我国隧道数量和里程逐年增加，随着运营时间的增加，如开裂、破损、剥落、结构渗水和翻浆冒泥等问题已经对隧道衬砌结构和行车安全造成了严重的威胁。（剩余6324字）