(1 同济大学建筑设计研究院 (集团) 有限公司,上海 200092;2 南京工程学院建筑工程学院,南京 211167;3 东南大学建筑设计研究院有限公司,南京 210096;4 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)

摘要: 为摆脱目前装配整体式混凝土框架“等同现浇”的固有模式,结合传统预应力自复位混凝土框架的优越性,提出一种带软钢阻尼器的自复位装配式混凝土( SCPCHD)框架.利用 ABQUAS 有限元软件分别建立新型自复位SCPCHD 框架、传统预应力自复位装配式混凝土(SCPC)框架和现浇钢筋混凝土(RC)框架的精细化三维实体数值分析模型,从而验证新型 SCPCHD 框架良好的抗震性能和耗能能力.分析结果表明:SCPCHD 框架残余变形很小、具有震后恢复性能好的优点;SCPCHD 框架的层间位移响应明显小于 SCPC 框架,与现浇 RC 框架基本接近,且结构构件塑性损伤小;罕遇地震下 SCPCHD 梁柱节点的耗能分别为传统预应力 SCPC 框架和现浇 RC 框架节点耗能的2.26 倍和 3.64 倍,表明新型节点耗能能力好.

关键词: 自复位;软钢阻尼器;三维实体;耗能能力;塑性损伤

中图分类号:TU318 文献标志码:A 文章编号:1002-848X(2022)17-0025-07

DOI:10.19701 / j.jzjg.20201800

Study on seismic performance of self-centering precast concrete frame connections withhysteretic dampers

GENG Fangfang1,2,WU Honglei1,SHEN Wei3,YANG Kang4

(1 Tongji Architectural Design (Group) Co. ,Ltd. ,Shanghai 200092,China;2 School of Architecture Engineering,Nanjing Institute of Technology,Nanjing 211167,China;3 Southeast University Architectural Design Institute Co. ,Ltd. ,Nanjing 210096,China;4 Key Laboratory of Concrete and Prestressed Concrete Structures of Ministryof Education,Southeast University,Nanjing 210096,China)

Abstract:In order to break through the inherent mode of “ equivalent to cast-in-place” of precast-monolithic concreteframe,combined with the advantage of traditional prestressed self-centering concrete frame,a kind of self-centering precastconcrete with hysteretic damper (SCPCHD) frame was proposed. In order to verify the desirable seismic performance andenergy dissipation capacity of the novel SCPCHD frame ,the refined three-dimensional solid numerical analysis models ofthe novel self-centering SCPCHD frame,the traditional prestressed self-centering precast concrete ( SCPC) frame andcast-in-situ reinforced concrete ( RC) frame were established by using ABQUAS finite element software. The analysisresults showed that: the residual deformation of the SCPCHD frame is negligible,and has the advantage of goodself-centering capacity after earthquake. The inter-story displacement response of SCPCHD frame is obviously smaller thanthat of the SCPC frame,which is basically close to that of the cast-in-situ RC frame,and the plastic damage of structuralcomponent for SCPCHD frame is minor. Under the rarely-occurred earthquake,the energy dissipation of the beam-columnjoint of the SCPCHD frame was about 2. 26 and 3. 64 times that of the traditional prestressed SCPC frame and thecast-in-situ RC frame respectively,indicating the novel kind of joint has good energy dissipation capacity.

Keywords:self-centering;hysteretic damper;three-dimensional solid;energy dissipation capacity;plastic damage

∗国家自然科学基金资助项目(51608258、51878315),中国博士后面上资助项目(2019M651595),江苏省“六大人才高峰”资助项目(JZ-032),同济大学建筑设计研究院(集团)有限公司科研课题(2017KY13).

第一作者:耿方方,博士,副教授,主要从事自复位装配式混凝土结构的研究,Email:j00000002962@ njit. edu. cn.

[引用本文] 耿方方,吴宏磊,沈伟,等. 带软钢阻尼器的自复位装配式混凝土框架节点抗震性能研究[ J]. 建筑结构,2022,52 ( 17): 25-31,58. GENG Fangfang,WU Honglei,SHEN Wei,et al. Study on seismic performance ofself-centering precast concrete frame connections with hysteretic dampers[J]. Building Structure,2022,52(17):25-31,58.