内嵌式框架摇摆墙结构抗震性能研究

doi:10.16265/j.cnki.issn1003-3033.2022.S2.0044

摘要/Abstract

摘要：

为研究内嵌式摇摆墙对钢筋混凝土(RC)框架结构抗震性能的影响,以1个4层RC框架结构为例,基于通用有限元分析平台分别建立RC框架结构和内嵌式RC框架摇摆墙结构模型,并采用时程分析和Pushover分析研究结构地震响应和性能水平。通过结构整体响应反应谱分析研究摇摆对结构整体刚度的影响;分析结构楼层响应反应谱,研究摇摆对结构楼层响应影响;Pushover研究摇摆强对结构变形的作用机制,以及对结构耗能机制和损伤分布的影响,从拟静力的角度揭示框架摇摆墙结构的地震损伤演化过程。研究表明:内嵌式摇摆墙可减小结构的振动响应,使结构破坏模式由层间破坏机制向整体破坏机制转变,可提高原RC框架结构的刚度和承载力,但并不能分担框架部分的基底剪力。

关键词: 钢筋混凝土(RC), 框架结构, 内嵌式框架摇摆墙结构, 破坏模式, 抗震性能, Pushover

Abstract:

In order to study the seismic behavior of the RC frame with an in-filled rocking wall, a 4-story RC frame was taken as an example. The RC frame and the model of the embedded frame structure with an in-filled rocking wall were established by the finite element analysis software. Seismic response and performance of structures were analyzed using time-procedure analysis and Pushover analysis. Response spectrum analysis was used to study the influence of an in-filled rocking wall on the overall stiffness, and the influence on floor response was also analyzed by the same way. The action mechanism of in-filled rocking wall strength on structural deformation and influence on energy dissipation and damage distribution of structures were analyzed by Pushover. The seismic damage evolution process of the RC frame with an in-filled rocking wall was revealed from the pseudo-static. The analysis results show that the in-filled rocking wall can decrease seismic response. The inter-story drift becomes more uniformly distributed, and the in-filled rocking wall prevents the story failure behavior. The in-filled rocking wall significantly improves the strength and ductility of the entire structure but cannot share the base shear force of the frame.

Key words: reinforced concrete (RC) frame structure, embedded frame structure with in-filled rocking wall, failure mode, seismic behavior, Pushover

孙魁, 郭昌锋, 刘洪宇. 内嵌式框架摇摆墙结构抗震性能研究[J]. 中国安全科学学报, 2022, 32(S2): 153-159.

SUN Kui, GUO Changfeng, LIU Hongyu. Research on seismic performance of embedded frame structure with in-filled rocking wall[J]. China Safety Science Journal, 2022, 32(S2): 153-159.

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楼层	地震动名称
	El-Centro		Taft
	模型1	模型2	模型1	模型2
1	1/220	1/435	1/346	1/581
2	1/206	2/907	1/320	1/614
3	1/272	1/486	1/400	1/668
4	1/476	1/534	1/651	1/739

性能水平	内嵌式摇摆墙承担结构总基底剪力占比/%
使用良好	32.8
使用无害	32.3
人身安全	33.0