Experimental study on seismic behavior of interior joints of assembled frames with special-shaped columns and composite beams under oblique loading

被引：0
|
作者：
Chen H. [1 ,2 ]
Jiang H. [1 ]
Wu L. [1 ,2 ]
机构：
[1] College of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan
[2] Hebei Earthquake Engineering Research Center, Tangshan
来源：
| 1600年 / Science Press卷 / 41期
关键词：
Composite beam; Concrete-filled circular steel tube special-shaped column; Frame interior joint; Oblique loading test; Seismic behavior;
D O I：
10.14006/j.jzjgxb.2020.S2.0018
中图分类号：
学科分类号：
摘要：
The oblique seismic action relative to the engineering axis is one of the important factors affecting the failure mechanism of the strong column and weak beam of the frame structure. In order to study the seismic performance of the interior joints of assembled frames with special-shaped columns and composite beams under oblique loading, three full-scale interior joint specimens were designed and fabricated, and the tests under oblique 45° loading were carried out. The parameters were axial compression ratios (0.2, 0.3, 0.4). The failure pattern, hysteretic behavior, energy dissipation capacity and stiffness degradation were analyzed through low cyclic loading test. Experimental results show that the failure mode meets the requirements of "strong joint, weak member". The joint is safe and reliable in a certain range of axial compression ratio (0.2-0.4). With the increase of axial compression ratio, the bearing capacity of the specimen increases and the ductility improves.The existence of concrete-filled circular steel tube can effectively slow down the degradation rate of stiffness. According to the axial direction of the engineering, the seismic design of the assembled frame with special-shaped columns and composite beams can meet the requirements of the failure mechanism of strong columns and weak beams. © 2020, Editorial Office of Journal of Building Structures. All right reserved.
引用
收藏
页码：151 / 159
页数：8
相关论文
共 16 条
  • [1] LAI Zhongyi, Reflections on the development of prefabricated constructions in high intensity area of seismic fortification, Building Structure, 49, pp. 485-487, (2019)
  • [2] ZHU Rong, Technical points of assembly-type design for a social housing project in shenzhen, Building structure, 49, pp. 488-491, (2019)
  • [3] LIU Ruonan, ZHANG Jian, WANG Yu, Et al., The development background and present situation of prefabricated building in China, Housing and Real Estate, 32, 11, pp. 32-47, (2019)
  • [4] XUE Jianyang, ZHOU Chaofeng, LIU Zuqiang, Research on damage behavior and quantitative indexes for steel reinforced concrete column with irregular section, China Civil Engineering Journal, 53, 2, pp. 1-11, (2020)
  • [5] ZHAGN Xizhi, GAO Huachao, ZHANG Jiawei, Experimental study on shear behavior of prefabricated joints between special-shaped concrete column and steel beam, Journal of Building Structures, 40, 9, pp. 84-94, (2019)
  • [6] CHEN G M, LAN Z H, XIONG M X, Et al., Compressive behavior of FRP-confined steel-reinforced high strength concrete columns, Engineering Structures, 220, pp. 1-19, (2020)
  • [7] WANG Wenda, JIA Zhilu, SHI Yanli, Et al., Performance of steel-reinforced circular concrete-filled steel tubular members under combined compression and torsion, Journal of Constructional Steel Research, 173, pp. 1-16, (2020)
  • [8] WU Yiran, SHI Yongjiu, MENG Lingye, Experimental studies of joints strength performance with t-shape concrete filled steel tubular columns and I-shape steel beams, Journal of Shenyang Jianzhu University(Natural Science), 5, 10, pp. 769-778, (2019)
  • [9] DONG Chunming, ZHOU Miao, A seismatic performance of rectangular frame column subjected to oblique reciprocating horizontal load, World Earthquake Engineering, 28, 3, pp. 65-69, (2012)
  • [10] LI Zhenbao, GAO Quanlei, LIU Lifei, Et al., Study on failure mechanism of steel frame subjected to oblique, World Earthquake Engineering, 32, 3, pp. 65-71, (2016)
12