Numerical analysis on seismic behavior of reinforced concrete beam to concrete filled steel tubular column connections with ring-beam

2016 ◽  
Author(s):  
Yi. Zhao ◽  
Li. Hua. Xu
Keyword(s):  
Reinforced Concrete ◽  
Numerical Analysis ◽  
Seismic Behavior ◽  
Concrete Beam ◽  
Reinforced Concrete Beam

Development and seismic performance of staggered and out-of-plane joints between concrete-filled steel tubular column and reinforced concrete beam

2020 ◽  
Vol 23 (13) ◽  
pp. 2866-2881
Author(s):  
Longji Dang ◽  
Shuting Liang ◽  
Xiaojun Zhu ◽  
Jian Yang ◽  
Yamin Song
Keyword(s):  
Reinforced Concrete ◽  
Shear Deformation ◽  
Seismic Performance ◽  
Seismic Behavior ◽  
Concrete Beam ◽  
Concrete Beams ◽  
Reinforced Concrete Beam ◽  
Steel Tube ◽  
Reinforced Concrete Beams ◽  
Out Of Plane

This article presents a staggered and out-of-plane connection between concrete-filled steel tubular column and reinforced concrete beam (SOC-TCB). SOC-TCB is taken from the basement roof joint of Suning center, which is a height of 341.85 m in China. In this joint system, the H-shaped steel brackets are welded with steel tube to transfer shear and moment. Moreover, the reinforcing bars are interrupted by steel tube and lapped with steel bracket. To investigate the seismic behavior of SOC-TCB, four types of SOC-TCBs were tested under reversal cyclic loading. The differences between specimens were staggered height and out-of-plane angle. Seismic performance was evaluated based on hysteretic behavior, failure mode, shear deformation, rotational deformation, and energy dissipation. The results showed that the shear deformation of joints was extremely small and the plastic hinges were formed at reinforced concrete beams. Due to insufficient anchorage length of longitudinal bars, anchoring failure was found in the reinforced concrete beams. However, SOC-TCB showed better seismic behavior as long as sufficient anchorage of longitudinal bars was ensured.

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