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단부 횡보강된 구조벽의 모멘트-곡률 관계 : Moment-Curvature Relationoship of Structural Walls with Confined Boundary Element
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- Authors
- Issue Date
- 2003-04
- Publisher
- 한국콘크리트학회 = Korean Concrete Institute
- Citation
- 한국콘크리트학회 논문집 제15권 제2호, 2003, pp. 323-334
- Keywords
- Confinement ; ductility ; reinforced concrete ; seismic design ; structural wall ; 횡보강 ; 연성도 ; 철근콘크리트 ; 내진설계 ; 구조벽
- Abstract
- For performance-based design using nonlinear static analysis. it is required to predict the inelastic behavior of structural members accurately. In the present study, a nonlinear numerical analysis was performed to develop the method describing the moment-curvature relationship of structural wall with boundary confinement. Through the numerical analysis. variations of behavioral characteristics and failure mechanism with the arrangement of vertical reinforcement and the length of boundary confinement were studied, According to the analysis. the maximum moment-carrying capacity of structural walls with adequately confined boundary elements is developed at the moment the unconfined concrete reaches the ultimate compressive strain, Walls with flexural re-bars concentrated on the boundaries fails in a brittle manner. As vertical re bars in the web increases. the brittle failure is prevented and a ductile failure occurs, Based on the findings. moment-curvature curves for walls with a variety of re-bar arrangement were developed, According to the proposed relationships. deformability of the structural walls wth boundary confinement increases as the compressive strength of the confined concrete increases compared to the applied compressive force.
- ISSN
- 1229-5515
- Language
- Korean
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