Experimental study of mechanical properties of beam-column joint of a replaceable energy-dissipation connector-precast concrete frame

Xie, Luqi; Wu, Jianhui; Zhang, Jinyang; Liu, Chenyu

doi:10.1016/j.jobe.2021.102588

Cited by 20 publications

(3 citation statements)

References 23 publications

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“…In this study, a risk-transferring connecting beam device (RTCBD) is used, which can enhance the longitudinal connection effect between beams [38][39][40]. This device not only enhances the bond between beams but also significantly boosts the track structure's capability in transmitting seismic forces.…”

Section: Transfer Of Bridge Seismic Riskmentioning

confidence: 99%

Effect of Subsequent Subgrade on Seismic Response of the High-Speed Railway Track–Bridge System

Wei,

Yuan,

Jiang

et al. 2024

Applied Sciences

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As an important part of the boundary conditions on both sides of the high-speed railway track–bridge system, the seismic response of the subgrade structure is different from that of the bridge structure. This difference has become increasingly significant with the widespread adoption of continuous welded rail technology in bridge construction. Therefore, investigating the seismic response of the bridge system, with a specific focus on the longitudinal constraint effects of the subsequent subgrade track structure, is of paramount importance. Utilizing finite element software, two distinct bridge models are developed: one incorporating the subsequent subgrade track structure and another excluding it. Through nonlinear time history analysis under varying seismic intensities, it is demonstrated that the longitudinal constraint of the subsequent subgrade track structure mitigates the longitudinal displacements and internal forces in critical components of the high-speed railway track–bridge system. Concurrently, acknowledging the heightened complexity and cost associated with post-earthquake repairs of the bridge structure compared to subgrade structure, this study uses a risk transfer connecting beam device. This device can redirect seismic damage from bridge structure to subgrade structure, thereby potentially reducing post-seismic repair expenses for the bridge.

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Section: Transfer Of Bridge Seismic Riskmentioning

confidence: 99%

Effect of Subsequent Subgrade on Seismic Response of the High-Speed Railway Track–Bridge System

Wei,

Yuan,

Jiang

et al. 2024

Applied Sciences

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“…The next deviation ratio must be not less than 5/4 times and not more than 3/2 times the previous deviation ratio. 4. The test must be continued by increasing the deviation ratio gradually to the minimum deviation ratio value is 0.035.…”

Section: Cyclic Testing Proceduresmentioning

confidence: 99%

“…This section is very important because it has a major role in transferring the forces in one element to other elements in the structure [2-3]. Due to the influence of lateral forces such as cyclic loads, these beam-column joints experience greater shear and horizontal forces than adjacent beam and column elements [4][5][6]. The flow of force through the beamcolumn joint can be disrupted if this connection is not able to provide adequate shear strength.…”

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confidence: 99%

Precast Concrete Column Beam Connection Using Dowels Due to Cyclic Load

Tumengkol

Irmawaty

Parung

et al. 2022

IJE

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The beam-column connection plays an important role in the building structure, especially when the load is cyclic. The main problem that must be solved is the beam and column connection panels. The purpose of this study was to analyze the characteristics of the hysteresis loop of the displacement load relationship with the control displacement of the precast beam-column connection due to cyclic loading. The research method used is the experimental method with a measurable object design test and a special testing method. The results of this study indicate that normal concrete has a compressive strength of 26.43 MPa, while grouted concrete has a compressive strength of 36.97 MPa. The findings of this study also show that the bond stress grouted concrete increases by 102.4% from normal concrete for D13 diameter screw reinforcement, while for D16 diameter, the adhesive stress increases by 51.63%. The findings of this study also show that in the ultimate condition, the load obtained in the tensile load is 13.58 kN with a displacement of 87.58 mm, while the compressive load is 12.62 kN with a displacement of 88.30 mm. This study concludes that the behavior of precast beam-column joints with dowels is stronger in resisting cyclic loads.

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Precast concrete column base with replaceable energy dissipation connectors: Quasi‐static tests and numerical research

Zhang

Xie

et al. 2022

Earthq Engng Struct Dyn

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A type of precast concrete column base with replaceable energy dissipation connectors (REDCs) is proposed in this study. The bottom of the column is reinforced with a square steel tube. REDCs can transfer the bending moment of the column base during frequent earthquakes and yield to dissipate most of the inputted seismic energy during major earthquakes. Several raised steel stoppers are arranged around the sides of the column base to limit lateral slippage. The load‐resisting mechanism, construction technology and post‐earthquake repair methods of the column base are introduced. Five quasi‐static tests were carried out on a full‐scale test specimen, in which the experimental variables include the axial compression ratio of the column and the size of the REDCs. The test results show that the damage was concentrated in the REDCs while the precast column suffered minor damage. The REDCs fractured after dozens of cycles at large lateral drift ratios, effectively exerting their excellent low‐cycle fatigue performance. Plump and stable hysteretic curves and bilinear skeleton curves were obtained in test results. The curves before and after seismic rehabilitation are similar. Furthermore, a simplified numerical analysis model of the column base is established using OpenSees. The hysteretic curves and skeleton curves obtained by simulation agree with the test results.

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Experimental study of mechanical properties of beam-column joint of a replaceable energy-dissipation connector-precast concrete frame

Cited by 20 publications

References 23 publications

Effect of Subsequent Subgrade on Seismic Response of the High-Speed Railway Track–Bridge System

Effect of Subsequent Subgrade on Seismic Response of the High-Speed Railway Track–Bridge System

Precast Concrete Column Beam Connection Using Dowels Due to Cyclic Load

Precast concrete column base with replaceable energy dissipation connectors: Quasi‐static tests and numerical research

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