辽宁工程技术大学学报（自然科学版）2025，Vol.44Issue(5)：578-589,12.DOI:10.11956/j.issn.1008-0562.20220042
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
Damage response and disaster reduction effect of articulated lining in shallow buried tunnels subject to bedrock normal fault displacement
摘要
Abstract
Based on existing experiment,a numerical model of shallow buried tunnels under the influence of bedrock normal fault displacement is established to address the threat to structural operation safety caused by underlying bedrock fault displacement in soil shallow buried tunnels.Combined with the Concrete Damage Plasticity(CDP)model,the damage response law,energy dissipation mechanism,and disaster reduction effect of articulated segmented tunnel structure were investigated.The influence of longitudinal position,connection type,connection length,elastic modulus of articulated design flexible joints and segmented lining length on disaster reduction effect was explored.The results 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 position coincides with the flexible joint,while the effect 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 effect.The research conclusion can provide theoretical basis for anti-fault articulated designs in shallow-buried tunnel.关键词
正断层/浅埋隧道/铰接设计/柔性接头/减灾效果/损伤响应Key words
normal fault/shallow tunnel/articulated design/flexible joint/disaster reduction effect/damage response分类
交通工程引用本文复制引用
张宇,王洛媛,安韶,陶连金,赵旭..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[J].辽宁工程技术大学学报（自然科学版）,2025,44(5):578-589,12.基金项目
国家自然科学基金项目(42402283) （42402283）
北京市教委科研项目(KM202410016016) （KM202410016016）
