钢框架梁下翼缘削弱型组合节点有限元分析
Numerical Analysis of Composite Joints with Weakened Bottom Flange of Steel Frame Beams
针对带有混凝土楼板的钢框架节点延性差且梁下翼缘焊缝易于发生破坏的不足,提出了一种新型组合节点形式,该节点采用单轴对称钢梁截面,仅对梁下翼缘削弱,通过增大梁下翼缘宽度,减小梁上翼缘宽度,从而减小因混凝土楼板的存在引起的组合梁截面中和轴的上移,以降低梁下翼缘焊缝发生脆性破坏的可能性。运用有限元软件ABAQUS开展了钢梁截面形式和梁下翼缘削弱起始点距梁柱连接面的距离、削弱长度以及削弱深度对组合节点滞回性能的影响分析,通过对其滞回曲线、骨架曲线、刚度和强度退化曲线以及节点耗能能力的对比,给出了削弱起始点距梁柱连接面的距离、削弱长度以及削弱深度的建议取值范围。
Considering the poor ductility of steel frame joints with concrete floors and the susceptibility to weld damage at the beam lower flanges, this paper proposes a new type of composite joint. The joint employs a mono-symmetrical steel beam section that weakens only the lower flanges by increasing their width while reducing the width of the upper flanges. This design mitigates the upward shift of the neutral axis of the composite beam section induced by the concrete floor, thereby reducing the risk of brittle fracture in the welds of the lower flanges. Using the finite element software ABAQUS, the effects of several parameters on the hysteretic behavior of the composite joint were investigated, including the distance from the weakening start point of the lower flange to the beam-column interface, the weakening length, and the weakening depth. By comparing hysteresis curves, skeleton curves, stiffness and strength degradation curves, and energy dissipation capacity, recommended value ranges for the weakening start distance, weakening length, and weakening depth are provided.
| [1] |
MAHIN S A.Lessons from damage to steel buildings during the Northridge earthquake[J].Engineering Structures,1998:20(4-6):261-270. |
| [2] |
MILLER D K.Lessons learned from the Northridge earthquake[J].Engineering Structures,1998,20(4-6):249-260. |
| [3] |
DEXTER R J,MELENDREZ M I.Though thickness properties of column flanges in welded moment connection[J].Journal of Structural Engineering,2000,126(l):24-31. |
| [4] |
金龙,李启才,张永咸.设置悬臂梁段拼接耗能的钢框架抗震性能试验研究[J].建筑结构学报,2022,43(2):43-51. |
| [5] |
JIN Long,LI Qicai,ZHANG Yongxian.Experimental study on seismic behavior of steel frame structures using cantilever beam splicing as energy dissipater[J].Journal of Building Structures,2022,43(2):43-51.(in Chinese) |
| [6] |
聂少锋,王硕,刘波,带U形连接件的加强式梁柱弱轴端板连接节点抗震性能研究[J].建筑钢结构进展,2023,25(1):38-48. |
| [7] |
NIE Shaofeng,WANG Shuo,LIU Bo,et al.Study on the seismic performance of beam-column joints with U-shaped connection reinforcement and weak axis end plates[J].Progress in Steel Building Structures,2023,25(1):38-48.(in Chinese) |
| [8] |
方郓龙,郁有升.“互”形节点钢框架抗震性能的有限元分析[J].结构工程师,2023,39(1):79-90. |
| [9] |
FANG Yunlong,YU Yousheng.Finite element analysis of seismic behavior of steel frames with“Mutual” joints [J].Structural Engineers,2023,39(1):79-90.(in Chinese) |
| [10] |
LI Jianfeng,WANG Yan,ZHANG Zuojie,et al.Seismic behavior of steel frames with different joints:Shaking table test and finite element analysis[J].Journal of Building Engineering,2023,70:106377. |
| [11] |
CHEN Xuesen,SHI Gang.Experimental study on seismic behavior of cover-plate joints in high strength steel frames[J].Engineering Structures,2019,191(7):292-310. |
| [12] |
JAZANY R A,GHOBADI M S.Seismic evaluation and upgrading details of plate-reinforced moment-resisting connections[J].Journal of Constructional Steel Research,2018,150(11):230-248. |
| [13] |
董建莉,王燕,庄鹏,腋板加强型节点钢框架抗震性能试验研究[J].土木工程学报,2016,49(1):69-79. |
| [14] |
DONG Jianli,WANG Yan,ZHUANG Peng,et al.Experimental study on seismic behaviors of steel frames with haunch reinforced section connections[J].China Civil Engineering Journal,2016,49(1):69-79.(in Chinese) |
| [15] |
张艳霞,李瑞,赵微,钢框架梁柱栓焊扩翼-翼缘削弱节点优势分析性能试验[J].世界地震工程,2016,32(2):127-138. |
| [16] |
ZHANG Yanxia,LI Rui,ZHAO Wei,et al.Performance test for advantage analysis of strengthened-weakened beam to column connections in steel frame[J].World Earthquake Engineering,2016,32(2):127-138.(in Chinese) |
| [17] |
SOFIAS C E,KALFAS C N,PACHOUOMIS D T.Experimental and FEM analysis of reduced beam section moment endplate connections under cyclic loading[J].Engineering Structures,2014,59(2):320-329. |
| [18] |
OH K,LEE K,CHEN L,et al.Seismic performance evaluation of weak axis column-tree moment connections with reduced beam section[J].Journal of Constructional Steel Research,2015,105:28-38. |
| [19] |
钱凯,李宵,原小兰,考虑楼板组合效应的多层钢框架抗连续倒塌性能分析[J].建筑结构学报,2021,42(S2):11-21. |
| [20] |
QIAN Kai,LI Xiao,YUAN Xiaolan,et al.Analysis of the continuous collapse resistance of multi-story steel frame structures with consideration of floor system interaction[J].Journal of Building Structures,2021,42(S2):11-21.(in Chinese) |
| [21] |
NAKASHIMA M,INOUE K,TADA M.Classification of damage to steel buildings observed in the 1995 Hyogoken-Nanbu earthquake[J].Engineering Structures,1998,20(4):271-281. |
| [22] |
张冬芳,贺拴海,赵均海,考虑楼板组合作用的复式钢管混凝土柱-钢梁节点抗震性能试验研究[J].建筑结构学报,2018,39(7):55-65. |
| [23] |
ZHANG Dongfang,HE Shuanhai,ZHAO Junhai,et al.Experimental study on seismic performance of connection between concrete-filled double steel tubular (CFDST) column and steel beam considering composite effect of RC slab[J].Journal of Building Structures,2018,39(7):55-65.(in Chinese) |
| [24] |
石永久,苏迪,王元清.混凝土楼板对钢框架梁柱节点抗震性能影响的试验研究[J].土木工程学报,2006,39(9):26-31. |
| [25] |
SHI Yongjiu,SU Di,WANG Yuanqing.An experimental study on the seismic performance of beam-column joints in steel frames with the effect of concrete slabs considered[J].China Civil Engineering Journal,2006,39(9):26-31.(in Chinese) |
| [26] |
聂建国,黄远,樊健生.考虑楼板组合作用的方钢管混凝土组合框架受力性能试验研究[J].建筑结构学报,2011,32(3):99-108. |
| [27] |
NIE Jianguo,HUANG Yuan,FAN Jiansheng.Experimental study on load-bearing behavior of rectangular CFST frame considering composite action of floor slab[J].Journal of Building Structures,2011,32(3):99-108.(in Chinese) |
| [28] |
牟犇,王玲玲,张春巍,考虑楼板影响的外环板式梁柱节点抗震性能:试验研究[J].工程力学,2018,35(2):160-168. |
| [29] |
MOU Ben,WANG Lingling,ZHANG Chunwei,et al.Seismic performance of beam-to-column joints with external-diaphragm considering slab effect:Experimental investigation[J].Engineering Mechanics,2018,35(2):160-168.(in Chinese) |
| [30] |
尚永芳.钢框架梁下翼缘削弱型组合节点滞回性能研究[D].西安:长安大学,2022. |
| [31] |
SHANG Yongfang.Study on hysteresis performance of weakened composite nodes with lower wing edges of steel frame beams[D].Xi'an:Chang'an University,2022.(in Chinese) |
| [32] |
中国科学院工程力学研究所,地震工程研究报告集(第三卷)[M].北京:科学出版社,1977. |
| [33] |
Institute of Engineering Mechanics,Chinese Academy of Sciences.Earthquake engineering research report collection (Volume III)[M].Beijing:Science Press,1977.(in Chinese) |
| [34] |
中华人民共和国住房和城乡建设部.建筑抗震设计规范:GB 50011—2010[S].北京:中国建筑工业出版社,2010. |
| [35] |
Ministry of Housing and Urban-Rural Development of the People's Republic of China.Code for seismic design of buildings:GB 50011—2010[S].Beijing:China Architecture & Building Press,2010.(in Chinese) |
| [36] |
龚永智,闭家静,单英杰,新型叠合楼板组合梁-钢柱节点抗震性能试验研究[J].土木工程学报,2025,58(7):28-40. |
| [37] |
GONG Yongzhi,BI Jiajing,SHAN Yingjie,et al.Experimental study on seismic behavior of composite beam-steel column joints with new composite floor slabs[J].China Civil Engineering Journal,2025,58(7):28-40.(in Chinese) |
| [38] |
中华人民共和国住房和城乡建设部.建筑试验抗震规程:JGJ 101—2015[S].北京:中国建筑工业出版社,2015. |
| [39] |
Ministry of Housing and Urban-Rural Development of the People's Republic of China.Specification for seismic test of buildings:JGJ 101—2015[S].Beijing:China Architecture & Building Press,2015.(in Chinese) |
国家自然科学基金项目(52408208)
国家自然科学基金项目(52178161)
西部装配式建筑工业化协同创新中心科学研究计划项目(N202207)
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