- 摘 要
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（1 北京工業(yè)大學城市建設學部, 北京 100124；2 天津城建大學天津市土木建筑結(jié)構防護與加固重點實驗室， 天津 300384；3 中建二局第一建筑工程有限公司， 北京 100176）
［摘要］提出了雙L形帶加勁肋節(jié)點，該節(jié)點由焊接在鋼管柱上的雙L形帶加勁肋組件、節(jié)點區(qū)域鋼管及雙L形帶加勁肋組件上的梁段區(qū)域構成。為研究所提出節(jié)點的抗震性能，進行了雙L形帶加勁肋節(jié)點、雙L形無加勁肋節(jié)點、直板連接型節(jié)點、焊接型節(jié)點的低周反復荷載試驗，分析比較了不同節(jié)點的破壞特征、承載力、滯回特性、延性、剛度退化、耗能能力。結(jié)果表明：不同構造對裝配式鋼管再生混凝土框架節(jié)點抗震性能影響較大。焊接型節(jié)點承載力和延性較差，直板連接型節(jié)點中雙直板連接型節(jié)點抗震性能優(yōu)于三直板連接型節(jié)點。雙L形帶加勁肋節(jié)點的承載力、剛度及耗能能力顯著提高。雙L形強化加勁肋節(jié)點構造簡單，三角加勁肋高度的增加提高了該節(jié)點的抗震性能。
［關鍵詞］裝配式；鋼管再生混凝土框架；梁柱節(jié)點；抗震性能；耗能能力
中圖分類號：TU398文獻標識碼：A文章編號：1002-848X(2021)05-0067-08
Influence research on seismic performance of assembly recycled CFST frames joints with different constructions
BIAN Jinliang1,2, CAO Wanlin1, ZHANG Zongmin1, YE Taoping1,3
(1 Faculty of Architecture, Civil and Transportation Engineering, Beijing University of Technology, Beijing 100124, China; 2 Tianjin Key Laboratory of Civil Structure Protection and Reinforcement, Tianjin Chengjian University, Tianjin 300384, China; 3 The First Construction Engineering Company Ltd．of China Construction Second Engineering Bureau, Beijing 100176, China)
Abstract:A double L-shaped joint (DLJ) with stiffener was proposed. The joint was composed of a double L-shaped with stiffener assembly welded to a steel pipe column, a steel pipe in the joint area, and a beam section area on the double L-shaped with stiffener assembly. To study the seismic performance of DLJ with stiffener, the low cycle repeated load test of DLJ with stiffener, DLJ without stiffener, straight plate connection joint and welded joint were carried out. The failure characteristic, load bearing capacity, hysteretic property, ductility, stiffness degradation and energy dissipation of different joints were analyzed and compared. The results show that the different constructions of joints have a great influence on the seismic performance of the assembly recycled concrete-filled steel tube (CFST) frames joints．The bearing capacity and ductility of welded joint are poor. The seismic performance of double-straight-plate connection joint in straight plate joint is better than that of three-straight-plate connection joint. The bearing capacity，stiffness and energy dissipation capacity of the DLJ with stiffener are significantly improved．The DLJ with enhanced stiffener has simple structure and the increase in the height of the triangular stiffener improves the seismic performance of the joint.
Keywords:assembly;recycled concrete-filled steel tube frame;column to beam joint;seismic performance;energy dissipation capacity
*國家“十三五”國家重點研發(fā)計劃(2018YFD1100903)。
作者簡介：邊瑾靚，博士，講師，Email:bjl211@163.com；通信作者：曹萬林，博士，教授，博士生導師，Email: wlcao@bjut.edu.cn。
