基于角钢为耗能构件的自复位桥墩抗震性能数值分析  

Numerical Analysis of Seismic Performance of Self-resetting Bridge Piers Based on Angle Steel as Energy Dissipation Component

作　　者：高明 崔恩文 温永昕 王俊杰 钱冬 Gao Ming;Cui Enwen;Wen Yongxin;Wang Junjie;Qian Dong(Lianyungang Technical College,Architectural Engineering Institute,Lianyungang 222000,Jiangsu,China;Jiangsu Ocean University,School of Civil and Harbor Engineering,Lianyungang 222005,Jiangsu,China;Lianyungang Architectural Design and Research Institutelimited liability company,Lianyungang 222001,Jiangsu,China)

机构地区：[1]连云港职业技术学院,建筑工程学院,江苏连云港222000 [2]江苏海洋大学,土木与港海工程学院,江苏连云港222005 [3]连云港市建筑设计研究院有限责任公司,江苏连云港222001

出　　处：《震灾防御技术》2025年第1期163-173,共11页Technology for Earthquake Disaster Prevention

基　　金：国家自然科学基金(51878315)。

摘　　要：本文提出以角钢作为节段拼装桥墩耗能构件的新型自复位预制节段桥墩(Self-centering Precast Segmental Bridge Pier,SPSBP),基于ABAQUS有限元软件建立三维仿真数值模型,数值模拟结果与拟静力试验结果基本吻合,SPSBP具有自复位能力较好、残余变形较小、耗能能力强等优点。进一步对初始预应力、耗能角钢厚度、长度及节段高宽比等影响因素进行参数化分析,研究结果表明,增加初始预应力可有效提高结构承载力和刚度,对结构耗能的影响不大;增加角钢厚度可提高SPSBP最大承载力,且有效提高其在地震作用下的耗能能力;角钢长度对承载力提高的影响不大;节段高宽比增大,可在保证刚度的同时提高承载力。A new type of self-centering precast segmental bridge pier(SPSBP)is proposed,which incorporates angle steel as an energydissipating frame member for segmental assembly of bridge piers.A three-dimensional numerical model was established using ABAQUS finite element software,and the simulation results were found to be in good agreement with the quasi-static test results.The SPSBP exhibits advantages such as excellent self-resetting ability,minimal residual deformation,and strong energy dissipation capacity.Further parametric analysis was conducted on factors including the initial prestress force,the thickness and length of the energydissipating angle steel,and the aspect ratio of the segment.The findings indicate that increasing the initial prestress force effectively enhances the load-bearing capacity and stiffness of the structure,with minimal impact on its energy dissipation ability.Increasing the thickness of the angle steel improves both the maximum bearing capacity and the energy dissipation capacity under seismic loading.The length of the angle steel has a negligible effect on bearing capacity enhancement.Additionally,increasing the aspect ratio of the segment boosts the load-bearing capacity while maintaining the rigidity of the structure.

关 键 词：预制节段桥墩 角钢 耗能 抗震性能 数值模拟 

分 类 号：U443.22[建筑科学—桥梁与隧道工程]