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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.13 No.2
- 발행연도
- 2019.2
- 수록면
- 211 - 222 (12page)
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초록· 키워드
오류제보하기
If reinforced concrete columns and walls in high-rise buildings are subjected to axial load for a sustained duration, long-term lateral deformation (or curvature) as well as axial shortening increase over time due to the creep and shrinkage of concrete. In the present study, sustained load tests were performed to evaluate the time-dependent axial shortening and lateral displacement occurring in eccentrically loaded columns. A test set-up using post-tensioning steel rods was introduced for the sustained loading with or without eccentricity. The test results showed that the lateral displacement as well as the axial shortening increased over the sustained duration but the increasing rate of the long-term deformations rapidly decreased with increasing time. The time-dependent axial shortening and lateral displacement increasing with time were predicted by using the age-adjusted effective modulus method based on the creep and shrinkage models of ACI 209. The predictions agreed well with the test results.
목차
Abstract
1 Introduction
2 Test Program
3 Sustained Load Test
4 Evaluation of Time-Dependent Deformations
5 Summary and Conclusions
References
참고문헌 (15)
참고문헌 신청
ACI Committee 209. (1992). Prediction of creep, shrinkage and temperature effects in concrete structures, ACI 209R-92 (p. 47). Farmington Hills: American Concrete Institute.
ACI Committee 318. (2014). Building code requirements for structural concrete and commentary, ACI 318-14. Farmington Hills: American Concrete Institute.
Balaguru, P., & Nawy, E. G. (1982) Evaluation of creep strains and stress redistribution in RC columns. ACI Special Publication, SP76-12, pp. 309?324.
Bradford, M. A. (1997). Service load analysis of slender reinforced concrete columns. ACI Structural Journal, 94(6), 675?683.
European Committee for Standardization. (2004). Eurocode 2: Design of concrete structures?Part 1-1: General rules and rules for buildings, BS EN 1992-1-1: 2004 (p. 2004). London: British Standards Institute.
ACI Committee 318. (2014). Building code requirements for structural concrete and commentary, ACI 318-14. Farmington Hills: American Concrete Institute.
Balaguru, P., & Nawy, E. G. (1982) Evaluation of creep strains and stress redistribution in RC columns. ACI Special Publication, SP76-12, pp. 309?324.
Bradford, M. A. (1997). Service load analysis of slender reinforced concrete columns. ACI Structural Journal, 94(6), 675?683.
European Committee for Standardization. (2004). Eurocode 2: Design of concrete structures?Part 1-1: General rules and rules for buildings, BS EN 1992-1-1: 2004 (p. 2004). London: British Standards Institute.
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