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프리스트레스트 콘크리트 보를 위한 변형률 기반 전단강도 모델 : Strain-Based Shear Strength Model for Prestressed Beams

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Authors
박홍근최경규강순필
Issue Date
2009-02
Publisher
한국콘크리트학회 = Korean Concrete Institute
Citation
한국콘크리트학회 논문집 제21권 제1호, 2009, pp. 75-84
Keywords
shear strengthprestressed concretecompression zonefailure surface전단강도프리스프레스트 콘크리트압축대파괴기준
Abstract
An analytical model for predicting the shear strength of prestressed concrete beams without shear reinforcement
was developed, on the basis of the existing strain-based shear strength model. It was assumed that the compression zone of intact
concrete in the cross-section primarily resisted the shear forces rather than the tension zone. The shear capacity of concrete was
defined based on the material failure criteria of concrete. The shear capacity of the compression zone was evaluated along the
inclined failure surface, considering the interaction with the compressive normal stress. Since the distribution of the normal stress
varies with the flexural deformation of the beam, the shear capacity was defined as a function of the flexural deformation. The
shear strength of a beam was determined at the intersection of the shear capacity curve and the shear demand curve. The result of the
comparisons to existing test results showed that the proposed model accurately predicted the shear strength of the test specimens.
ISSN
1229-5515
Language
Korean
URI
http://www.kci.or.kr

https://hdl.handle.net/10371/8115
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Architecture and Architectural Engineering (건축학과)Journal Papers (저널논문_건축학과)
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