[1]董尧荣,徐赵东,葛腾,等.带高耗能黏弹性阻尼器腋撑RC框架结构抗震性能[J].东南大学学报(自然科学版),2018,48(4):662-670.[doi:10.3969/j.issn.1001-0505.2018.04.011]
 Dong Yaorong,Xu Zhaodong,Ge Teng,et al.Seismic performance of RC frame structures with high-energy dissipation haunch braces of viscoelastic dampers[J].Journal of Southeast University (Natural Science Edition),2018,48(4):662-670.[doi:10.3969/j.issn.1001-0505.2018.04.011]
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带高耗能黏弹性阻尼器腋撑RC框架结构抗震性能()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
48
期数:
2018年第4期
页码:
662-670
栏目:
土木工程
出版日期:
2018-07-20

文章信息/Info

Title:
Seismic performance of RC frame structures with high-energy dissipation haunch braces of viscoelastic dampers
作者:
董尧荣徐赵东葛腾徐业守
东南大学混凝土及预应力混凝土结构教育部重点实验室, 南京 210096
Author(s):
Dong Yaorong Xu Zhaodong Ge Teng Xu Yeshou
Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University, Nanjing 210096, China
关键词:
RC框架 黏弹性阻尼器 高耗能腋撑 抗震性能
Keywords:
reinforced concrete frame viscoelastic damper high-energy dissipation haunch brace seismic performance
分类号:
TU375.4
DOI:
10.3969/j.issn.1001-0505.2018.04.011
摘要:
为研究高耗能黏弹性阻尼器腋撑对RC框架结构抗震性能的影响,基于已有普通框架试验和高耗能黏弹性阻尼器精细力学模型,对普通RC框架结构和带高耗能黏弹性阻尼器腋撑RC框架结构进行了宽频大幅值水平正弦稳态激励荷载作用下的抗震性能数值模拟分析.对比研究了2类框架的滞回性能、骨架曲线、刚度退化、耗能能力、附加阻尼比、关键部位点钢筋应变规律等.研究结果表明:加设高耗能黏弹性阻尼器腋撑RC框架结构的耗能能力、承载力、侧向刚度及附加阻尼比大幅度提高,对结构承载力退化和刚度退化的抑制效果显著;激励频率对2类结构大位移幅值的滞回特性以及钢筋处于弹性阶段应变的影响不大,而对中小位移幅值的滞回特性以及钢筋处于塑性阶段应变的影响较大;加设高耗能黏弹性阻尼器腋撑改变了框架结构的受力模式,大幅度减小了梁柱节点区的受力,有效地保护了梁柱节点.
Abstract:
In order to investigate the seismic performance of the reinforced concrete(RC)frame structures with high-energy dissipation haunch braces of viscoelastic dampers(HDHBVD), a RC frame model with HDVDHB and a general RC frame model were designed and their seismic performance subjected to broadband sine waveform steady-state excitations were studied by using the numerical simulation method. These studies are based on the existing experimental results about general RC frame and refinement mechanics model about high-energy dissipation viscoelastic dampers. Seismic behaviors, such as hysteretic performance, skeleton curve, stiffness degradation, energy dissipation capacity, additional damping ratio and reinforcement strain at key measuring points between two RC frame models, were compared. The investigation results indicate that the energy dissipation capacity, bearing capacity, lateral stiffness and additional effective damping ratio of the RC frame with HDHBVD are increased significantly, and the bearing capacity degradation and stiffness degradation of the RC frame with HDHBVD are restrained remarkably. The excitation frequency has little influence on the hysteretic characteristics under large displacement amplitude and the reinforcement strain at the elastic stage of two RC frame models, but it has a great influence on the hysteretic characteristics under small and medium displacement amplitude and the reinforcement strain at the plastic stage. The force patterns of the RC frame with HDHBVD can be changed and the internal forces at beam-column joints can be reduced greatly, which can effectively protect beam-column joints.

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备注/Memo

备注/Memo:
收稿日期: 2018-01-17.
作者简介: 董尧荣(1988—),男,博士生;徐赵东(联系人),男,博士,教授,博士生导师, xzdsubmission@163.com.
基金项目: 国家杰出青年科学基金资助项目(51625803)、国家重点研发计划资助项目(2016YFE0200500)、江苏省重点研发计划资助项目(BE2015158)、江苏省建筑设计研究院有限公司研究生工作站科研项目、江苏省研究生科研与实践创新计划资助项目(KYCX18_0112).
引用本文: 董尧荣,徐赵东,葛腾,等.带高耗能黏弹性阻尼器腋撑RC框架结构抗震性能[J].东南大学学报(自然科学版),2018,48(4):662-670. DOI:10.3969/j.issn.1001-0505.2018.04.011.
更新日期/Last Update: 2018-07-20