Flexural-Shear Behavior of Beam Members according to the Spacing of Stirrups and Tension Steel Ratio

Park, Hoon-Gyu; An, Young-Ki; Jang, Il-Young; Choi, Goh-Il

doi:10.4334/JKCI.2003.15.4.513

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Flexural-Shear Behavior of Beam Members according to the Spacing of Stirrups and Tension Steel Ratio

Journal title : Journal of the Korea Concrete Institute
Volume 15, Issue 4, 2003, pp.513-521
Publisher : Korea Concrete Institute
DOI : 10.4334/JKCI.2003.15.4.513

Title & Authors

Flexural-Shear Behavior of Beam Members according to the Spacing of Stirrups and Tension Steel Ratio
Park, Hoon-Gyu; An, Young-Ki; Jang, Il-Young; Choi, Goh-Il;

Abstract

Existing tests results have shown that confining the concrete compression region with closed stirrups improves the ductility and load-carrying capacity of beams. However, only few researchers have attempted to utilize the beneficial effects of the presence of these stirrups in design. This paper presents the result of experimental studies on the load-deflection behavior and the strengthening effect of laterally confined structural high-strength concrete beam members in which confinement stirrups have been introduced into the compression regions. Fifteen tests were conducted on full-scale beam specimens having concrete compressive strength of 41 MPa and 61 MPa. Different spacing of stirrups(0.25∼1.0d) and amount of tension steel(0.55∼0.7 ${$\rho$}$ ${$_{b}$}$ ) as major variables were investigated. And also, this study present an appropriate shear equation for decision of ultimate failure modes of high-strength concrete beams according to stirrup spacing. The equation is based on interaction between shear strength and displacement ductility. Prediction of failure mode from presented method and comparison with test results are also presenteded

Keywords

reinforced concrete;high-strength concrete;load;deflection;beam;spacing of stirrup;failure mode;shear;

Language

Korean

Cited by

1time(s) in KSCD

유효 스터럽 개념을 이용한 전단보강근의 강도 예측,권기연;양준모;이주하;윤영수;

한국콘크리트학회논문집, 2008. vol.20. 1, pp.99-107

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