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Title |
Research of Residual Strain Calculation of Prestressed Concrete Beam Element
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DOI |
https://doi.org/10.4334/JKCI.2014.26.4.555 |
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Keywords |
성능 기반 내진설계 ; 복원성 ; 프리스트레스트 콘크리트 ; 잔류 변형 ; 등가 소성 힌지 길이 performance-based seismic design ; stability ; prestressed concrete ; residual deformation ; equivalent plastic hinge length |
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Abstract |
To perform performance-based seismic design of buildings, it is necessary clear goal for usage and stability after an earthquake. To clear this goal, it requires a review of the constituent material of the building and, in particular, a member used as an indicator of the residual strain is useful. There are more usage of prestressed concrete because of prestressing steel witch has characteristics of the origin-oriented. In this study, the goal is estimating of residual strain on the prestressed concrete beam member. The expression for angle of deformed prestressed concrete beam member was obtained from using of curvature on the critical section and the equivalent plastic hinge length based on 'equivalent plastic hinge length method'. Considering the balance of strength and deformation conditions, suitable analysis values were derived from 'split Element Method'. Through various parametric studies, various factors affecting the residual strain were decided. Based on the results of this study, it is expected many researches will be proceed in the future.
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