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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.1
- 수록면
- 149 - 157 (9page)
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초록· 키워드
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An innovative analysis method is proposed in this paper for the determination of ultimate resistance of prestressed concrete beams. The proposed method can be applied to simply supported or continuous beams in a unified manner whether structure and external loads are symmetric or not. Through the iterative nonlinear strain compatibility solutions, this method can also be applied to the non-prismatic section/un-symmetrical composite structures under moving load. The conventional studies have used the failure criteria when the strain of concrete reaches 0.003. However compared with bonded case, the value of strain in the reinforcement is much smaller than bonded case, thus, unbonded prestressed cases show compressive failure mode. It is shown that the proposed method gives acceptable results within 5% error compared with the prior experimental results. It can be shown that the proposed method can reach the solution much faster than typical three-dimensional finite element analysis for the same problem. This method is applicable to the existing unbonded prestressed members where deterioration has occurred leading to the reduced ultimate resistance or safety. In all, the proposed procedure can be applied to the design and analysis of newly constructed structures, as well as the risk assessment of rehabilitated structures.
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등록된 정보가 없습니다.
참고문헌 (11)
참고문헌 신청
Harajli, M. H. / 1991 / Ultimate Flexural Strength of Concrete Members Prestressed with Unbonded Tendons / ACI Structural Journal 88(6):663~673
Naaman, Antonine E. / 1991 / Stress at Ultimate in Unbonded Post-Tensioning Tendons: Part 1—Evaluation of the State-of-the- Art / ACI Structural Journal 88(5):641~651
Naaman, Antonine E. / 1991 / Stress at Ultimate in Unbonded Post-Tensioning Tendons: Part 2—Proposed Methodology / ACI Structural Journal 88(6):683~692
Du, Gongchen / 1985 / Ultimate Stress of Unbonded Tendons in Partially PSC Beams / PCI Journal 30(6):72~91
Chakrabarti, P. R. / 1995 / Ultimate Stress for Unbonded Post-Tensioning Tendons in Partially Prestressed Beams / ACI Structural Journal 92(6):689~697
Naaman, Antonine E. / 1991 / Stress at Ultimate in Unbonded Post-Tensioning Tendons: Part 1—Evaluation of the State-of-the- Art / ACI Structural Journal 88(5):641~651
Naaman, Antonine E. / 1991 / Stress at Ultimate in Unbonded Post-Tensioning Tendons: Part 2—Proposed Methodology / ACI Structural Journal 88(6):683~692
Du, Gongchen / 1985 / Ultimate Stress of Unbonded Tendons in Partially PSC Beams / PCI Journal 30(6):72~91
Chakrabarti, P. R. / 1995 / Ultimate Stress for Unbonded Post-Tensioning Tendons in Partially Prestressed Beams / ACI Structural Journal 92(6):689~697
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