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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.3
- 발행연도
- 2019.3
- 수록면
- 321 - 338 (18page)
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초록· 키워드
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While internal and external unbonded tendons are widely utilized in concrete structures, an analytical solution for the increase in unbonded tendon stress at ultimate strength, Δf<SUB>ps</SUB> , is challenging due to the lack of bond between strand and concrete. Moreover, most analysis methods do not provide high correlation due to the limited available test data. The aim of this paper is to use advanced statistical techniques to develop a solution to the unbonded strand stress increase problem, which phenomenological models by themselves have done poorly. In this paper, Principal Component Analysis (PCA), and Sparse Principal Component Analysis (SPCA) are employed on different sets of candidate variables, amongst the material and sectional properties from a database of Continuous unbonded tendon reinforced members in the literature. Predictions of Δf<SUB>ps</SUB> are made via Principal Component Regression models, and the method proposed, linear models using SPCA, are shown to improve over current models (best case R<SUP>2</SUP> of 0.27, measured-topredicted ratio [λ] of 1.34) with linear equations. These models produced an R<SUP>2</SUP> of 0.54, 0.70 and λ of 1.03, and 0.99 for the internal and external datasets respectively.
목차
Abstract
1. Introduction
2. Principal Component Analysis (PCA) and Sparse PCA (SPCA)
3. Principal Component Analysis Application
4. Sparse Principal Components Application
5 Discussion
6. Summary and Conclusions
References
참고문헌 (48)
참고문헌 신청
AASHTO. (2010). AASHTO load and resistance factor and design (LRFD) bridge design specifications. Washington, DC: AASHTO.
Abdel-Qader, K. A. & Abudayyeh, O. (2004). Linear structure modeling and PCA algorithm for bridge crack detection. In 2004 IEEE electro/information technology conference, Milwaukee, WI, pp. 138?142. https ://doi.org/10.1109/ eit.2004.45693 78.
ACI (American Concrete Institute). (1963). Building code requirements for structural concrete and commentary. ACI 318-63, Farmington Hills, MI.
ACI (American Concrete Institute). (2008). Building code requirements for structural concrete and commentary. ACI 318-08, Farmington Hills, MI.
BSI (British Standards Institution). (2001). Structural use of concrete. BS8110, London.
Abdel-Qader, K. A. & Abudayyeh, O. (2004). Linear structure modeling and PCA algorithm for bridge crack detection. In 2004 IEEE electro/information technology conference, Milwaukee, WI, pp. 138?142. https ://doi.org/10.1109/ eit.2004.45693 78.
ACI (American Concrete Institute). (1963). Building code requirements for structural concrete and commentary. ACI 318-63, Farmington Hills, MI.
ACI (American Concrete Institute). (2008). Building code requirements for structural concrete and commentary. ACI 318-08, Farmington Hills, MI.
BSI (British Standards Institution). (2001). Structural use of concrete. BS8110, London.
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