华南地震2017，Vol.37Issue(2)：79-85,7.DOI:10.13512/j.hndz.2017.02.013
基于柔性节点的高烈度区盾构隧道纵向地震反应减震分析
Analysis of Seismic Longitudinal Response Control of Shield Tunnel in Highly Seismic Zone Based on Flexible Joints
摘要
Abstract
In the background of a seismic resistant project of a super large and long shield tunnel, a novel flexible damping joint developed by SMA shaped memory alloy is proposed. The mechanism and effectiveness of the damping measure on controlling the seismic longitudinal response of shield tunnel in high intensity seismic zone is analyzed by using response displacement method based on the longitudinal beam-spring model. The results show that the openings of the joints located on the soil variation area can be mitigated obviously by adopting the flexible damping joint measure, which is able to improve the anti-seismic performance of the entire shield tunnel. The concentrated deformations of the damping joints can be restored to the original position partly after the earthquake. The control measure can well protect the shield tunnel from destroyed by earthquake.关键词
盾构隧道/柔性减震节点/纵向地震反应/减震机理Key words
Shield tunnel/Flexible damping joint/Seismic longitudinal response/Control mechanism分类
交通工程引用本文复制引用
张颖,李志山,徐丽,陈华霆,罗俊杰..基于柔性节点的高烈度区盾构隧道纵向地震反应减震分析[J].华南地震,2017,37(2):79-85,7.基金项目
国家重点基础研究发展计划(973计划)项目(2011CB013600) （973计划）
教育部创新团队研究计划项目(IRT13057) （IRT13057）
国家自然科学基金(51208129) （51208129）
