预制拼装桥墩滞回分析模型和损伤评估研究  

Hysteretic Analysis Model and Damage Assessment of Precast Assembly Bridge Piers

作　　者：叶晗晖 叶佳辉 周浩杨 彭荷慧 布占宇[1] Ye Hanhui;Ye Jiahui;Zhou Haoyang;Peng Hehui;Bu Zhanyu(School of Civil&Environmental Engineering and Geography Science,Ningbo University,Ningbo Zhejiang 315211,China)

机构地区：[1]宁波大学土木工程与地理环境学院,浙江宁波315211

出　　处：《港口航道与近海工程》2024年第5期43-48,54,共7页Port,Waterway and Offshore Engineering

基　　金：国家自然科学基金项目:强震作用下考虑局部损伤效应的钢桥抗震设计方法研究(51878606);浙江省基础公益研究计划项目:东南沿海地区中小跨径高架桥抗震型隐式盖梁体系研发(LGG22E080007);宁波市交通运输科技计划项目:高架桥预制小箱梁与隐盖梁结构体系设计施工优化关键技术研究(202207)。

摘　　要：为了研究预应力预制拼装桥墩的抗震性能与地震损伤特性,利用Bouc-Wen-Baber-Noori模型对已开展的预制拼装桥墩拟静力试验进行模拟,通过Matlab中的Simulink模块编制计算程序,根据试验结果确定滞回模型的关键参数,然后利用Park-Ang和改进Park-Ang损伤模型对桥墩损伤进行评估。结果表明:Matlab计算结果与试验结果吻合较好,桥墩损伤评估结果可靠,滞回模型和损伤分析模型可应用于预制拼装桥墩的抗震计算和评估。To study the seismic resistance performance and the earthquake damage characteristics of prestress precast assembly bridge piers,Bouc-Wen-Baber-Noori model was used to simulate the pseudo-static test of the precast assembly bridge piers.The calculation codes were programmed on the basis of Simulink module of Matlab software,and the key parameters of the hysteresis model were determined according to the test results.Park-Ang damage model was combined with the modified one to evaluate the damage degree of the bridge piers.The researches show that the Matlab-based calculation results are in good agreement with the test results,that is,the damage assessment of the bridge piers is reliable,the hysteresis model and damage analysis model can apply to the anti-seismic calculation and assessment of the precast assembly bridge piers.

关 键 词：预制拼装桥墩 抗震设计 拟静力试验 滞回模型 损伤评估 

分 类 号：U442.5[建筑科学—桥梁与隧道工程]