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Development of Tension Stiffening Models for Steel Fibrous High Strength Reinforced Concrete Members
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 Title & Authors
Development of Tension Stiffening Models for Steel Fibrous High Strength Reinforced Concrete Members
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 Abstract
The steel fiber reinforced concrete may affect substantially to the tension stiffening at post cracking behavior. Even if several tension stiffening models exist, they are for plain and normal strength concrete. Thus, the development of tension stiffening models for steel fibrous high strength RC members are necessary at this time when steel fiber reinforced and high strength concretes are common in use. This paper presents tension stiffening effects from experimental results on direct tension members with the main variables such as concrete strength, concrete cover depth, steel fiber quantity and aspect ratio. The comparison of existing models against experimental results indicated that linear reduced model closely estimated the test results at normal strength level but overestimated at high strength level. Discontinuity stress reduced model underestimated at both strength levels. These existing models were not valid enough in applying at steel fibrous high strength concrete because they couldn't consider the concrete strength nor section area. Thus, new tension stiffening models for high strength and steel fiber reinforced concrete were proposed from the analysis of experimental results, considering concrete strength, rebar diameter, concrete cover depth, and steel fiber reinforcement.
 Keywords
Tension stiffening;High strength concrete;Steel fiber;Concrete cover depth;
 Language
Korean
 Cited by
1.
콘크리트 파괴역학을 이용한 철근콘크리트 인장부재의 균열성장 해석,홍창우;윤경구;양성철;

한국콘크리트학회논문집, 2000. vol.12. 1, pp.3-12 crossref(new window)
2.
강섬유보강 고강도 철근콘크리트 부재의 인장강성모델 개발,홍창우;윤경구;이정호;박제선;

한국콘크리트학회논문집, 1999. vol.11. 6, pp.35-46 crossref(new window)
3.
원전 격납건물의 Steel Fiber 적용성 평가를 위한 지진취약도 분석,김민규;박준희;전영선;최인길;

한국전산구조공학회논문집, 2012. vol.25. 5, pp.381-388 crossref(new window)
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