할선강성을 이용한 직접 비탄성 스트럿-타이 모델
Direct Inelastic Strut-Tie Model Using Secant Stiffness

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박홍근; 김윤곤; 엄태성
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한국콘크리트학회 = Korean Concrete Institute
한국콘크리트학회 논문집 제17권 제2호, 2005, pp. 201-212
strut and tie modelsecant stiffnessnonlinear designinelastic analysisreinforced concrete스트럿-타이 모델할선강성비탄성해석철근콘크리트
A new strut-tie model using secant stiffness, Direct Inelastic Strut-Tie Model, was developed. Since basically the proposed design method uses linear analysis, it is convenient and stable in numerical analysis. At the same time, the proposed design method can accurately estimate the inelastic strength and ductility demands of struts and ties because it can analyzes the inelastic behavior of structure using iterative calculations for secant stiffness. In the present study, the procedure of the proposed design method was established, and a computer program incorporating the proposed method was developed. Design examples using the proposed method were presented, and its advantages were highlighted by the comparison with the traditional strut-tie model. The Direct Inelastic Strut-Tie Model, as an integrated analysis/design method, can directly address the design strategy intended by the engineer to prevent development of macro-cracks and brittle failure of struts. Since the proposed model can analyze the inelastic deformation, indeterminate strut-tie model can be used. Also, since the proposed model controls the local deformations of struts and ties, it can be used as a performance-based design method for various design criteria.
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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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