An experimental study on seismic behavior of square hollow section column-truss beam connections
LIU Jianfei1, CHENG Xin1,2, LEI Honggang1,2, AN Yi1,2
1.Department of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
2.Shanxi Key Laboratory of Civil Engineering Disaster Prevention and Control, Taiyuan University of Technology, Taiyuan 030024, China
Abstract：A prefabricated square steel tube column-truss beam connection node based on column seat type is proposed to realize the construction of high-efficiency and high-precision layer prefabricated steel structure building on site. The connection is mainly composed of column base, square steel tube column with flange and truss beam. The column base and truss beam are welded in the factory, and the column base is assembled with the upper and lower columns through high-strength bolts on site. In order to study the seismic performance of the new joint, the hysteresis loading test of three full-foot cross-shaped square steel tube column-truss beam connection specimens was carried out, the failure mode of each specimen was investigated, and the influence of parameters such as beam-column section size and axial compression ratio on seismic performance indicators such as hysteresis curve, ultimate bearing capacity, ductility, energy dissipation capacity and stiffness degradation was evaluated. The test results show that the three specimens show good seismic performance, and the failure of each specimen begins with the local buckling of the truss beam chord or web rod and ends with the cracking of the truss beam chord or web rod. The column wall thickness and truss beam chord thickness have a significant influence on the bearing capacity and initial stiffness of the specimens. During the loading process, there was no damage on the column seats of all specimens, no obvious slippage between the flange plates, and no tearing phenomenon between the column base and the truss beam, which satisfies the seismic design principle of “strong connections and weak components”.
刘建飞1，程欣1,2，雷宏刚1,2，安毅1,2. 方钢管柱与桁架梁十字形节点滞回试验研究[J]. 振动与冲击, 2023, 42(20): 237-244.
LIU Jianfei1, CHENG Xin1,2, LEI Honggang1,2, AN Yi1,2. An experimental study on seismic behavior of square hollow section column-truss beam connections. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(20): 237-244.
［1］ Liu X C，Zhou X J，Zhang A L，et al．Design and compilation of specifications for a modular prefabricated high-rise steel frame structure with diagonal braces: part I: integral structural design[J]. The Structural Design of Tall and Special Buildings，2018，27( 2) : e1415．
［2］ Liu X C，He X N，Zhng A L，et al． Design and specification compilation of a modular- prefabricated high-rise steel frame structure with diagonal braces: part II: elastic-plastic time-history analysis and joint design［J］． The Structural Design of Tall and Special Buildings，2018，27( 2) : e1414．
［3］ 张爱林. 工业化装配式高层钢结构体系创新、标准规范编制及产业化关键问题[J]. 工业建筑，2014，44（8）：1-6.
ZHANG Ai-lin. The key issues of system innovation,drawing up standard and industrialization for modularized prefabricated high-rise steel structures [J]. Industrial Construction，2014，44(8)：l-6．
［4］ 张爱林，赵亮，刘学春等. 装配式方钢管柱桁架梁节点单调加载试验研究[J]. 土木工程学报，2014，0(S2):169-174.
ZHANG Ai-lin, ZHAO Liang, LIU Xue-chun, et al. Monotonic experimental study of prefabricated square tubular column to truss beam connections [J]. China Civil Engineering Journal, 2014, 0 (S2): 169-174.
［5］ 王婧，尹新生. 方钢管柱钢结构梁柱节点的破坏形态分析[J]. 四川建材，2015，41(6):61-67.
WANG Jing, YIN Xin-sheng. The analysis of damage form about steel beam- column node [J]. Sichuan building materials, 2015, 41 (6): 61-67.
［6］ 刘学春，浦双辉，徐阿新，等. 模块化装配式多高层钢结构全螺栓连接节点静力及抗震性能试验研究［J］．建 筑 结 构 学 报，2015，36 ( 12 ) : 43-51．
LIU Xue-chun, PU Shuang-hui, XU A-xin, et al. Experimental study on static and seismic performance of bolted joint in modularized multi-layer and high-rise prefabricated steel structures [J]. Journal of building structures, 2015, 36 (12): 43-51.
［7］ Liu X C，Zhang X X，Pu S，et al．Seismic performance study on slipping bolted truss-to-column connections in modularized prefabricated steel structures. Eng. Struct. 2018, 163: 241-254.
［8］ 刘学春，王玥，张爱林. 法兰连接方钢管柱-桁架焊接节点抗震性能试验研究[J]. 振动与冲击，2021，40(19):13.
LIU Xue-chun, WANG Yue, ZHANG Ai-lin. Tests for aseismic performance of welded joints between flange-connected square steel tube column and truss [J]. Journal of Vibration and Shock, 2021, 40 (19): 13.
［9］ 马振宇，孙国华，刘文渊，等. 新型装配式钢管柱轻钢桁架梁节点的滞回性能[J]. 建筑钢结构进展，2021，23(11):16-25.
MA Zhen-yu, SUN Guo-hua, LIU Wen-yuan, et al. The cyclic behavior of an innovative prefabricated connection between steel tubular column and light-weight steel truss beam [J]. Progress in Steel Building Structures, 2021, 23 (11): 16-25.
［10］金属材料拉伸试验第1部分：室温试验方法：GB／T228．1—2010[S]．北京：中国标准出版社，2011．
Tensile test of genus materials Part 1: Room temperature test method: GB/T228.1—2010[S]. Beijing: China Standards Press, 2011.
［11］建筑抗震试验规程: JGJ/T 101—2015 [S]. 北京: 中国建筑工业出版社，2015．
Specification for seismic test of buildings: JGJ /T 101—2015 ［S］．Beijing: China Architecture ＆ Building Press，2015．
［12］建筑抗震设计规范：GB50011—2010[S]. 北京：中国建筑工业出版社，2010．
Code for seismic design of buildings: GB50011-2010 [S]. Beijing: China Construction Industry Press, 2010.
［13］倪诗阁. 工程建设技术标准动态结构试验中屈服变形的确定方法[J]. 工业建筑，1996(08): 45-50.
NI Shi-ge. A method to verify the yield deformation in structure test [J]. Industrial Construction, 1996 (08): 45-50.
［14］Choi H K, Choi Y C, Choi C S. Development and testing of precast concrete beam-to-column connections[J]. Engineering Structures, 2013, 56:1820-1835.
［15］Mirghaderi S R, Torabian S, Keshavarzi F, et al. I-beam to box-column connection by a vertical plate passing through the column[J]. Engineering structures. 2010, 32:2034-2048.
