Evaluation of Shear Strength Degradation of RC Column Subjected to Cyclic Loading

Fu, Li; Nakamura, Hikaru; Furuhashi, Hiroki; Yamamoto, Yoshihito; Miura, Taito

doi:10.21012/fc9.070

Cited by 1 publication

(2 citation statements)

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“…Above all, the numerical method is outlined. 3-D RBSM is a discrete method and has been proved to be effective to accurately simulate the behaviors of reinforced concrete structures including bending and shear (Yamamoto et al 2008;Gedik et al 2011;Yamamoto et al 2014;Fu et al 2016a). In 3-D RBSM, concrete is modeled as an assemblage of rigid polyhedrons interconnected by springs at their boundary surfaces (see Fig.…”

Section: Numerical Methods and Modelmentioning

confidence: 99%

“…And we have demonstrated the applicability of the decomposition approach, decomposing the development of shear resistance of a RC column, analyzed by three dimensional rigid-body-spring-method (3-D RBSM), into the contributions of beam and arch, utilizing the local stress result (Fu et al 2016a). This approach is very useful to understand the mechanism of shear resistance of the beams having varying structural factors such as shear span to effective depth ratio, tension reinforcement ratio and shear reinforcement ratio considering decomposed beam action and arch action definitely.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Influence of Section Pre-crack on Shear Strength and Shear Resistance Mechanism of RC Beams by Experiment and 3-D RBSM Analysis

Nakamura

Yamamoto

et al. 2017

ACT

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In order to investigate the influence of crack through section, which is often generated under cyclic loading, on the shear behavior and strength of RC beam, an experimental method was attempted to introduce a 0.5 mm and 1.0 mm-wide pre-crack, respectively, in beam cross section. The two pre-cracked beams were tested and the shear behaviors were compared with a non-cracked one. As the experimental result, it was found that the section pre-cracks led to a significant degradation of shear strength. Secondly, the different shear behaviors between pre-cracked and non-cracked beams were simulated by 3-D RBSM, and the developments of shear resistances were decomposed into the shear contributions provided by beam action and arch action. Based on the decomposition result, it became clear that the arch actions governed the grades of shear strengths and the section pre-cracks played a primary role in inducing extra crack behaviors and obstructing the longitudinal compressive stress transfer in concrete.

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Section: Numerical Methods and Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%