外置新型粘弹性阻尼器节段拼装桥墩抗震性能研究  

Research on seismic performance of segmental assembly bridge piers with external new viscoelastic dampers

作　　者：高慧兴 谷硕 刘国清 李楚文 GAO Hui-xing;GU Shuo;LIU Guo-qing;LI Chu-wen(School of transportation science and engineering,Jilin Jianzhu university,Changchun 130118,China)

机构地区：[1]吉林建筑大学交通科学与工程学院,长春130118

出　　处：《吉林建筑大学学报》2024年第3期63-68,共6页Journal of Jilin Jianzhu University

基　　金：吉林省建设厅科学技术计划项目(2022-KZ-02)。

摘　　要：为了使节段拼装桥墩可以满足在地震条件下快速修复的新要求,促进其在中高烈度地震区的推广使用,提出了一种外置于桥墩底部的新型粘弹性阻尼器用以提高桥墩的耗能能力。本文介绍了新型粘弹性阻尼器的内部结构及安装方式,并基于OpenSees有限元分析软件建立带有阻尼器的节段拼装桥墩模型,与带有接缝的节段拼装桥墩模型进行滞回对比分析。分析结果显示:外置粘弹性阻尼器能够实现震后可修复,与未安装阻尼器的节段拼装桥墩相比,粘弹性阻尼器附加给了桥墩刚度和阻尼,既提高了桥墩的承载能力,又最大限度地提高了桥墩的耗能能力。In order to meet the new requirements of rapid repair under earthquakes and improve its promotion and use in medium to high intensity earthquake areas,a new type of viscoelastic damper externally installed at the bottom of the bridge pier is proposed to improve the energy dissipation capacity of the bridge pier.Firstly,this article introduces the internal structure and installation method of the new viscoelastic damper;based on the OpenSees finite element analysis software,a segmental assembled bridge pier model with dampers is established,and hysteresis comparison analysis is conducted with the segmental assembled bridge pier model with joints.The analysis results show that an external viscoelastic damper can achieve post earthquakerepairability.Compared with segmental assembled piers without dampers,viscoelastic dampers add stiffness and damping to the piers,which not only improves the load-bearing capacity of the piers but also greatly improves their energy dissipation capacity.

关 键 词：自复位节段拼装桥墩 抗震性能分析 滞回反应分析 新型粘弹性阻尼器 

分 类 号：U443.22[建筑科学—桥梁与隧道工程]