Experimental study on seismic performance of joint of fabricated concrete-filled circular steel tubular L-shaped special-shaped columns

被引：0
|
作者：
Yu F. [1 ]
Wu L. [1 ,2 ]
Sun Y. [1 ]
Chen H. [1 ,2 ]
Guo X. [1 ]
Qi J. [3 ]
Ma X. [1 ]
机构：
[1] College of Civil and Architectural Engineering, North China University of Science and Technology, Tangshan
[2] Hebei Key Laboratory of Earthquake Engineering and Disaster Prevention, North China University of Science and Technology, Tangshan
[3] College of Port and Coastal Engineering, Jimei University, Xiamen
来源：
Jianzhu Jiegou Xuebao/Journal of Building Structures | 2023年 / 44卷
关键词：
assembly; beam-column joint; built-in circular concrete filled steel tubular special-shaped column; low-cyclic loading test; seismic performance;
D O I：
10.14006/j.jzjgxb.2023.S2.0032
中图分类号：
学科分类号：
摘要：
In order to study of seismic performance of joints of fabricated built-in circular concrete filled steel tubular L-shaped special-shaped columns, three full-scale specimens were designed. The hysteretic behavior, bearing capacity and deformation capacity, stiffness degradation and energy dissipation capacity of beam-column joints under different axial compression ratios were analyzed by low-cycle reciprocating loading test. The results show that the failure of characteristics of the specimens under different axial compression ratios are the failure of plastic hinge at the end of the beam, and the built-in circular concrete filled steel tube can continue to bear the weight of the structure after concrete crushing at the bottom of the column. Within a certain range, with the increase of axial compression ratio, the load and displacement eigenvalues of the specimen show an increasing trend, the displacement ductility coefficient is larger than 2, and the elastic and elasto-plastic inter-story displacement angles can reach 1 / 121 and 1 / 42. Compared with the oblique loading specimen with the loading angle of 45°, the ductility of the specimen with the loading angle of 0° is better, and the yield load and ultimate load are reduced. © 2023 Science Press. All rights reserved.
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页码：324 / 330
页数：6
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