Seismic behavior of a replaceable artificial controllable plastic hinge for precast concrete beam-column joint

2021 ◽  
Vol 245 ◽  
pp. 112848
Author(s):  
Hua Huang ◽  
Yujie Yuan ◽  
Wei Zhang ◽  
Ming Li
Keyword(s):  
Seismic Behavior ◽  
Concrete Beam ◽  
Precast Concrete ◽  
Plastic Hinge ◽  
Column Joint

Comparing the Seismic Performance of Beam-Column Joints with and without SFRC when Subjected to Cyclic Loading

2012 ◽  
Vol 626 ◽  
pp. 85-89 ◽  
Author(s):  
Kay Dora Abdul Ghani ◽  
Nor Hayati Hamid
Keyword(s):  
Energy Dissipation ◽  
Cyclic Loading ◽  
Seismic Performance ◽  
Experimental Work ◽  
Concrete Beam ◽  
Steel Fiber ◽  
Precast Concrete ◽  
Experimental Results ◽  
Column Joint ◽  
Initial Cracks

The experimental work on two full-scale precast concrete beam-column corner joints with corbels was carried out and their seismic performance was examined. The first specimen was constructed without steel fiber, while second specimen was constructed by mixed up steel fiber with concrete and placed it at the corbels area. The specimen were tested under reversible lateral cyclic loading up to ±1.5% drift. The experimental results showed that for the first specimen, the cracks start to occur at +0.5% drifts with spalling of concrete and major cracks were observed at corbel while for the second specimen, the initial cracks were observed at +0.75% with no damage at corbel. In this study, it can be concluded that precast beam-column joint without steel fiber has better ductility and stiffness than precast beam-column joint with steel fiber. However, precast beam-column joint with steel fiber has better energy dissipation and fewer cracks at corbel as compared to precast beam-column joint without steel fiber.

scholarly journals Tests on structural concrete beam-column joints with intermediate column bars

1979 ◽  
Vol 12 (3) ◽  
pp. 189-203
Author(s):  
R. Park ◽  
Yeoh Sik Keong
Keyword(s):  
Cyclic Loading ◽  
Transverse Shear ◽  
Concrete Beam ◽  
Plastic Hinge ◽  
Seismic Loading ◽  
Shear Capacity ◽  
Neutral Axis ◽  
Structural Concrete ◽  
Intermediate Column ◽  
Column Joint

Three structural concrete interior beam-column joint units were tested. The beams were prestressed by tendons in the top and the bottom of the section but not at mid-depth. The columns were reinforced using Grade 380 longitudinal bars. Transverse shear reinforcement existed in all members and in the joint core. Static cyclic loading was applied to the units to simulate seismic loading. The presence of intermediate column bars was shown to significantly improve the shear capacity of the joint core, and the need for a relatively small neutral axis depth in the plastic hinge regions of beams for ductile behaviour was emphasized.

Seismic behavior of precast concrete beam‐column connections with bolt connectors in columns

2020 ◽  
Author(s):  
Weichen Xue ◽  
Haoyang Bai ◽  
Lingjie Dai ◽  
Xiang Hu ◽  
Miroslav Dubec
Keyword(s):  
Seismic Behavior ◽  
Concrete Beam ◽  
Precast Concrete

Seismic behavior of innovation steel-embedded precast concrete beam-to-column joints

Structures ◽  
2021 ◽  
Vol 34 ◽  
pp. 4952-4964
Author(s):  
Xian Rong ◽  
Xiaowei Zhang ◽  
Jianxin Zhang
Keyword(s):  
Seismic Behavior ◽  
Concrete Beam ◽  
Precast Concrete

Low Reversed Cyclic Loading Test for New Precast Concrete Beam to Column Connection

2014 ◽  
Vol 1079-1080 ◽  
pp. 160-165
Author(s):  
Jian Bing Yu ◽  
Zheng Xing Guo ◽  
Dong Zhi Guan
Keyword(s):  
Cyclic Loading ◽  
Precast Concrete ◽  
Plastic Hinge ◽  
Control Factor ◽  
Test Results ◽  
Loading Test ◽  
Concrete Frame ◽  
Weak Beam ◽  
Bending Capacity ◽  
Column Joint

On the basis of the domestic and overseas scholars’ research, it is innovative to put forward a new precast frame beam-to-column connection. One full-scale beam-to-column connection in a precast concrete（PC）frame and a beam-to-column connection in a cast-in-place concrete structures were tested under uni-directional cyclic loading that simulated earthquake-type motions. The new-type beam-to-column joint in a precast concrete frame consisted of cast-in-place columns and precast beams. Test results showed that（a）The property and action of precast connections are similar to the cast-in-place connection, it showed that both precast connections and cast-in-place connection have similar seismic performance; (b) The cracking load of precast connection are similar to the cast-in-place connection; (c) All the columns of all specimens did not destroy, it illustrate that it conform to the strong column weak beam. (d) In this experiment test, because the control factor use the bending capacity of beam, it also play the same plastic hinge mechanism as the traditional component. All the longitudinal reinforcement destruction ahead of stirrup in beams, which should be confirmed the guiding ideology of strong shear weak bending. On the basis of the test results, design considerations for the beam-to column connection were recommended.

Experimental studies on seismic behavior of precast hybrid steel–concrete beam

2018 ◽  
Vol 22 (3) ◽  
pp. 670-686 ◽  
Author(s):  
Xizhi Zhang ◽  
Shaohua Zhang ◽  
Sixin Niu
Keyword(s):  
Failure Mode ◽  
Seismic Behavior ◽  
Concrete Beam ◽  
Failure Modes ◽  
Concrete Beams ◽  
Precast Concrete ◽  
Stiffness Degradation ◽  
Connection Form ◽  
Steel Beam ◽  
Deformation Curves

This study aims to investigate the seismic behavior of precast hybrid steel–concrete beams. Five full-scale beam specimens, including four precast hybrid steel–concrete beams and a conventional precast concrete beam, were tested under cyclic loading. Furthermore, a new connection form was proposed to facilitate the constructability of the steel-to-concrete connection. The main experimental parameters were the steel beam length and the longitudinal reinforcement ratio. In addition, the influence of the reduced beam section of the steel beam on seismic behavior of precast hybrid steel–concrete beams was observed and investigated. Detailed analysis was performed on the basis of the observed failure modes and the relationships obtained from the experimental data, such as hysteretic curves, deformation curves, stiffness degradation curves, energy dissipation capacity, load curvature curves, and strain development curves. Experimental results showed that the failure mode of precast hybrid steel–concrete beams was different from that of precast concrete beams. The precast hybrid steel–concrete beam retained ductility comparable to that of precast concrete beams. Generally, the initial stiffness of precast hybrid steel–concrete beams was smaller than that of precast concrete beams, but the stiffness degradation was more stable. On the basis of measured crack propagation and failure mode, deformation curves, and the development of strain in steel beams and longitudinal reinforcements, the stress between the steel beam and concrete beam can be effectively transmitted to one another by the proposed connection form.

Seismic behavior of precast concrete beam-column joints with steel strand inserts under cyclic loading

2020 ◽  
Vol 216 ◽  
pp. 110766
Author(s):  
JianBing Yu ◽  
Wei Zhang ◽  
ZhanZhan Tang ◽  
Xuan Guo ◽  
Stanislav Pospíšil
Keyword(s):  
Cyclic Loading ◽  
Seismic Behavior ◽  
Concrete Beam ◽  
Precast Concrete ◽  
Steel Strand
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