Calculation of relative slip between steel bars and concrete

Xu, Gang; Xiang, Jian; Xiang, Xuan; Zhang, Yali

doi:10.1016/j.conbuildmat.2018.12.208

Cited by 9 publications

(1 citation statement)

References 12 publications

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“…(1) Rising curve (s<su) (2) Descending curve (s≥su) 1) Weak constraint (K<5)2) Strong constraint (K≥5)where τu is the maximum bond strength, s is the relative slip between rebar and concrete, α is a constant quantity and is determined as 0.13 according to the test results, τu=Fu/πdL, F u is the ultimate tensile force, d is the rebar diameter, and L is the anchorage length. su is the slip corresponding to maximum bonding strength (Xu et al, 2019). kf is a coefficient related to failure modes and is determined by the confinement of concrete cover and stirrup to rebars, …”

Section: Fe Simulationmentioning

confidence: 99%

Experimental study and reliability-based analyses on the bond performance of high-strength and corrosion-resistant rebar in concrete

Huang

Yue

Liu

et al. 2022

Advances in Structural Engineering

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In this paper, the influence of concrete strength, diameter, cover thickness, anchorage length, and stirrups ratio on the bonding performance of the HSCR rebar in concrete are experimentally investigated. A nonlinear FE model for simulating the bond performance between HSCR and concrete is established and validated, and the influencing parameters are parametrically investigated. Moreover, the applicability of the ultimate bond strength model for HSCR-concrete is comparatively discussed, and a new model is proposed and validated to give relatively accurate prediction. Based on the proposed model, the anchorage reliability analysis is conducted, the influencing parameters as well as their variation on the reliability of bond strength are discussed, and the reliable anchorage length is recommended.

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