基岩正断层错动浅埋隧道铰接式衬砌损伤响应与减灾效果

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中图分类号：U45 文献标志码：A 文章编号：1008-0562（2025）05-0578-12

Damage response and disaster reduction effect of articulated lining in shallow buried tunnels subject to bedrock normal fault displacement ZHANG Yu1 ，WANG Luoyuan'，AN Shao²， TAO Lianjin³， ZHAO Xu³ （1.School ofCivil and Transportation Engineering，Beijing Universityof Civil Engineeringand Architecture，Beijing 102627，China; 2.Naval Research Academy，Beijing10o71，China;3.The Collge of Architecture and Civil Engineering， Beijing University of Technology， Beijing 10012.4.China）

Abstract：Based on existing experiment，a numerical model of shallow buried tunnels under the influence of bedrock normal fault displacement is established toaddress the threat to structural operation safety caused by underlying bedrock fault displacement in soil shalow buried tunnels.Combined with the Concrete Damage Plasticity（CDP） model，thedamage response law，energy dissipationmechanism，and disaster reduction effectof articulated segmented tunnel structure were investigated.The influence of longitudinal position，connection type， connection length，elastic modulus of articulated design flexible jointsand segmented lining lengthon disaster reduction efect was explored.Theresults demonstrate that the flexible joints in articulated design can significantly reduce lining damage through deformation energy dissipation;the best disaster reduction effect is achieved when the fault displacement positioncoincides with theflexible joint，while the efect is weaker when it coincides with the midpoint of the lining segment; increasing the joint length，reducing the elastic modulus，or shortening the segmented lining length can further enhance the disaster reduction efect.The research conclusion can provide theoretical basis for anti-fault articulated designs in shallow-buried tunnel.

Keywords： normal fault; shallow tunnel; articulated design; flexible joint; disaster reduction effect； damage response

0引言

城市轨道交通是公共基础设施的重要组成部分，对经济发展和社会稳定具有深远的战略意义。（剩余15935字）