Behavior of Fiber Reinforced Key Joints in Precast Concrete Segmental Bridge: Experimental and Numerical Analysis

Fu, Jundong; Yuan, Aimin; Wan, Shui

doi:10.1061/(asce)be.1943-5592.0001717

Cited by 8 publications

(1 citation statement)

References 21 publications

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“…Peng et al [25] carried out experiments on 12 bending test specimens, in which a simplified calculation formula for the flexural bearing capacity was established. Fu et al [26] inquired about the implications caused by the design parameters, including the number of keys, the presence or not of reinforcement in keys, and the shape of keys on flexural shear capacity through the FE model and test results from 10 pairs of specimens. Peng et al [27] put forward three models and the corresponding formulas of the flexural capacity of the UHPC beam by conducting tests on six specimens.…”

Section: Introductionmentioning

confidence: 99%

Flexural Behavior of Precast UHPC Segmental Beams with Unbonded Tendons and Epoxy Resin Joints

Zheng

Chen

et al. 2023

Buildings

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Precast concrete segmental bridges (PCSBs) with hybrid tendons may be the most competitive solution for achieving the advantages of rapid construction and favorable structural performance. Therefore, the flexural behavior of precast concrete segmental bridges (PCSBs) with unbonded tendons and epoxy joints was experimentally investigated in this study, and the effects of the joint types were recorded. Investigations were carried out on the ultimate loads, prestressed strand stresses, deflections, as well as failure modes, while an unbonded monolithic beam was tested for comparison. In addition, the strain measurement proved that the average strains agree with the assumption of plane section, regardless of whether the joints were set. The flexural strengths of prefabricated components were 9~15% lower than those of the monolithic beams with unbonded tendons. Meanwhile, the shape of the joints also influenced the flexural bearing capacity; the bearing capacity of the dual-tooth joint beam was 4.5% lower than that of the single-tooth one, and the bearing capacity of the flat butt joint member was 5.7% lower than that of the dual-tooth joint beam. Moreover, the experimental deflection curve and ultimate bearing capacity of the models with different shear keys showed a good correlation with the FE results. These research outcomes will aid in comprehending the roles of joints in the flexural behaviors of precast UHPC segmental bridges.

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Section: Introductionmentioning

confidence: 99%

Flexural Behavior of Precast UHPC Segmental Beams with Unbonded Tendons and Epoxy Resin Joints

Zheng

Chen

et al. 2023

Buildings

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Cyclic loading test for prefabricated ultra‐high performance concrete columns with bellows grouting connection

Fu,

Wan,

Xiao

et al. 2024

Structural Concrete

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Accelerated bridge construction is crucial in bridge engineering. In order to improve the seismic performance of prefabricated columns, this study proposes using ultra‐high performance concrete (UHPC) in the plastic hinge areas of prefabricated columns with bellows grouting connections. In particular, cyclic loading tests are carried out on four 1/3‐scaled columns, including two cast‐in‐place columns and two bellows grouting connection columns. The results show that columns with UHPC in the plastic hinge areas exhibit larger lateral and ultimate bearing capacity, ductility, cumulative energy dissipation, and stiffness compared to those with conventional concrete. Additionally, bellows grouting connection column with UHPC shows superior seismic performance compared to cast‐in‐place column with conventional concrete. The proposed finite element analysis model is in a good agreement with the test results. Through using finite element analysis, three key parameters influencing the seismic performance of bellows grouting columns are examined, and the optimal combination of these parameters is identified.

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Horizontal shear behavior of self-compacting lightweight concrete composite beams with dry joints and unbonded reinforcements

Choi,

Lee,

Shin

et al. 2024

Cement and Concrete Composites

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Behavior of Fiber Reinforced Key Joints in Precast Concrete Segmental Bridge: Experimental and Numerical Analysis

Cited by 8 publications

References 21 publications

Flexural Behavior of Precast UHPC Segmental Beams with Unbonded Tendons and Epoxy Resin Joints

Flexural Behavior of Precast UHPC Segmental Beams with Unbonded Tendons and Epoxy Resin Joints

Cyclic loading test for prefabricated ultra‐high performance concrete columns with bellows grouting connection

Horizontal shear behavior of self-compacting lightweight concrete composite beams with dry joints and unbonded reinforcements

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