Experimental Study on Seismic Performance and Shear Capacity of Hybrid Fiber Concrete Coupling Beam

YU Jing; JIA Huifang; ZHANG Hui

doi:10.13204/j.gyjzG22070115

Volume 53 Issue 5

May 2023

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YU Jing, JIA Huifang, ZHANG Hui. Experimental Study on Seismic Performance and Shear Capacity of Hybrid Fiber Concrete Coupling Beam[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(5): 80-87. doi: 10.13204/j.gyjzG22070115

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YU Jing, JIA Huifang, ZHANG Hui. Experimental Study on Seismic Performance and Shear Capacity of Hybrid Fiber Concrete Coupling Beam[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(5): 80-87. doi: 10.13204/j.gyjzG22070115

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Experimental Study on Seismic Performance and Shear Capacity of Hybrid Fiber Concrete Coupling Beam

doi: 10.13204/j.gyjzG22070115

1. School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China;
2. State Key Laboratory of Green Building in Western China, Xi'an 710055, China

Received Date: 2022-07-01

Abstract

Abstract

In order to improve the seismic performance of small span height ratio coupling beams, quasi-static tests were carried out on three hybrid fiber concrete coupling beams and one ordinary concrete coupling beam. The failure modes, hysteresic properties, shear capacity and ductility of the coupling beams were analyzed. The effects of the matrix material and section width of the coupling beams on the seismic performance and shear capacity of the coupling beams were studied. The test results showed that hybrid fiber concrete was beneficial to the development of multiple cracks of the coupling beams, and all the three hybrid fiber concrete coupling beams showed flexural shear failure. The shear capacity and displacement ductility of hybrid fiber reinforced concrete beams with the same span-height ratio and reinforcement are 53.66% and 29.31% higher than those of ordinary concrete beams, respectively. At the same time, the finite element analysis software ABAQUS was used to investigate the influence of span-height ratio and stirrup spacing on the shear capacity of hybrid fiber reinforced concrete beams. On this basis, based on the idea of sub-item superposition, a formula for calculating the shear capacity of hybrid fiber reinforced concrete beam was established, which also considered the contributions of concrete, longitudinal reinforcement, stirrup and fiber. The calculated results were in good agreement with the experimental results, which could provide a reference for the design of this kind of member and the research in related fields.
- hybrid fiber concrete,
- coupling beam,
- quasi-static test,
- finite element analysis,
- shear capacity

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References(24)

References

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