既有RC框架建筑BRB与黏滞阻尼器加固抗震韧性对比分析  

Comparative analysis of seismic toughness of existing RC frame buildings reinforced by BRB and viscous dampers

作　　者：郑雄辉 刘文锋[1] 秦艳慧 ZHENG Xionghui;LIU Wenfeng;QIN Yanhui(School of Civil Engineering,Qingdao University of Technology,Qingdao 266525,China)

机构地区：[1]青岛理工大学土木工程学院,青岛266525

出　　处：《青岛理工大学学报》2024年第5期1-9,共9页Journal of Qingdao University of Technology

基　　金：山东省自然科学基金面上项目(ZR2023MD036)。

摘　　要：基于《建筑抗震韧性评价标准》(GB/T 38591—2020)中的评价方法,对高层框架结构的原结构、黏滞阻尼器加固结构以及采用防屈曲支撑(BRB)加固结构3种结构进行评估,比较3种结构的韧性评估结果。结果表明:黏滞阻尼器加固结构的修复费用比BRB加固结构修复费用低;黏滞阻尼器与BRB加固均可降低构件的损伤等级,从而降低修复时间,但黏滞阻尼器加固结构修复时间减少较为明显;黏滞阻尼器加固结构与BRB加固结构均降低了结构的损伤等级,从而大幅降低人员伤亡率,但黏滞阻尼器加固结构人员伤亡率减少较为明显。本研究结果可为高层框架结构加固方法的韧性评估比较和提升提供重要参考。Based on the evaluation method in the Evaluation Standard for Seismic Reslience Assessment of Buildings(GB/T 38591—2020),three kinds of high-rise frame structures,i.e.,the original structure,the viscous damper reinforced structure and BRB(anti-buckling support)reinforced structure,are evaluated,and the toughness evaluation results of the three structures are compared.The results show that:the reduction of the repair cost of the viscous damper reinforcement is more significant than that of BRB reinforcement structure;both the viscous damper and the BRB reinforcement can reduce the damage grade of the component and thus reduce the repair time,but the reduction of the repair time of the viscous damper reinforced structure is more obvious;both the viscous damper reinforced structure and the BRB reinforced structure can reduce the damage grade of the structure,thus significantly reducing the casualty rate,but the viscous damper reinforced structure has a more obvious reduction in the casualty rate.The results of this study can provide an important reference for the evaluation,comparison and improvement of toughness of reinforcement methods for high-rise frame structures.

关 键 词：既有建筑 黏滞阻尼器 防屈曲支撑 韧性评价 韧性提升 

分 类 号：TU318[建筑科学—结构工程]