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  

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

作　　者：耿方方 吴宏磊[1] 沈伟 杨康 GENG Fangfang;WU Honglei;SHEN Wei;YANG Kang(Tongji Architectural Design(Group)Co.,Ltd.,Shanghai 200092,China;School of Architecture Engineering,Nanjing Institute of Technology,Nanjing 211167,China;Southeast University Architectural Design Institute Co.,Ltd.,Nanjing 210096,China;Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education,Southeast University,Nanjing 210096,China)

机构地区：[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

出　　处：《建筑结构》2022年第17期25-31,58,共8页Building Structure

基　　金：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)。

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。In order to break through the inherent mode of “equivalent to cast-in-place” of precast-monolithic concrete frame, combined with the advantage of traditional prestressed self-centering concrete frame, a kind of self-centering precast concrete with hysteretic damper(SCPCHD) frame was proposed. In order to verify the desirable seismic performance and energy dissipation capacity of the novel SCPCHD frame, the refined three-dimensional solid numerical analysis models of the novel self-centering SCPCHD frame, the traditional prestressed self-centering precast concrete(SCPC) frame and cast-in-situ reinforced concrete(RC) frame were established by using ABQUAS finite element software. The analysis results showed that: the residual deformation of the SCPCHD frame is negligible, and has the advantage of good self-centering capacity after earthquake. The inter-story displacement response of SCPCHD frame is obviously smaller than that of the SCPC frame, which is basically close to that of the cast-in-situ RC frame, and the plastic damage of structural component for SCPCHD frame is minor. Under the rarely-occurred earthquake, the energy dissipation of the beam-column joint of the SCPCHD frame was about 2.26 and 3.64 times that of the traditional prestressed SCPC frame and the cast-in-situ RC frame respectively, indicating the novel kind of joint has good energy dissipation capacity.

关 键 词：自复位 软钢阻尼器 三维实体 耗能能力 塑性损伤 

分 类 号：TU318[建筑科学—结构工程]