Hysteretic behavior of H-section steel members under biaxial bending considering local buckling

被引：0
|
作者：
Cheng X. [1 ,2 ]
Duan D. [2 ]
Niu L. [1 ,3 ]
Chen Y. [1 ]
机构：
[1] State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai
[2] College of Architecture and Civil Engineering, Taiyuan University of Technology, Taiyuan
[3] The Architectural Design and Research Institute of Henan Province Co., Ltd, Zhengzhou
来源：
Chen, Yiyi (yiyichen@tongji.edu.cn) | 1600年 / Science Press卷 / 41期
关键词：
Biaxial bending test; Finite element analysis; H-section steel member; Hysteretic behavior; Local buckling; Torsional effect;
D O I：
10.14006/j.jzjgxb.2018.0458
中图分类号：
学科分类号：
摘要：
Structural members may subject to biaxial bending moments due to the multi-dimensional seismic actions, where the yield or local buckling about one principal axis will lead to mechanical behavior degradations about the other principal axis. A 3D loading system composed of a universal hinge and three sliding devices, was designed to apply the combined axial load and biaxial bending to the H-section steel structural members. The experimental investigation on the cyclic biaxial bending behavior of H-section steel members with larger width-thickness ratios was conducted. The failure mechanism, hysteretic curves, and energy dissipation capacity of 11 specimens were investigated. The specimens were designed with different width-thickness ratios of flanges and webs, axial force ratios, as well as loading directions. Furthermore, the FE models were established by ABAQUS and verified by experimental results. Finally, based on the experimental and numerical analyses, the influence of torsional moment on the specimens was examined. The results show that the hysteretic response of the specimens is strongly influenced by the interaction effect between the local buckling and plastic deformation of the component plates, which is determined by the coupling effect between the width-thickness ratio of plate, axial force ratio, and loading direction. It is indicated that the effect of torsional moment on the specimens can be neglected. © 2020, Editorial Office of Journal of Building Structures. All right reserved.
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页码：69 / 78
页数：9
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