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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Steel and Composite Structures, An International Journal Steel and Composite Structures, An International Journal Vol.24 No.5
- 발행연도
- 2017.1
- 수록면
- 549 - 559 (11page)
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초록· 키워드
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As few multi-tower single-box multi-cell cable-stayed bridges with corrugated steel webs have been built, analysis is mostly achieved by combining single-girder model, beam grillage model and solid model in support of the design. However, such analysis methods usually suffer from major limitations in terms of the engineering applications: single-girder model fails to account for spatial effect such as shear lag effect of the box girder and the relevant effective girder width and eccentric load coefficient; owing to the approximation in the principle equivalence, the plane grillage model cannot accurately capture shear stress distribution and local stress state in both top and bottom flange of composite box girder; and solid model is difficult to be practically combined with the overall calculation. The usual effective width method fails to provide a uniform and accurate "effective length" (and the codes fail to provide a unified design approach at those circumstance) considering different shear lag effects resulting from dead load, prestress and cable tension in the construction. Therefore, a novel spatial grid model has been developed to account for shear lag effect. The theoretical principle of the proposed spatial grid model has been elaborated along with the relevant illustrations of modeling parameters of composite box girder with corrugated steel webs. Then typical transverse and longitudinal shear lag coefficient distribution pattern at the side-span and mid-span key cross sections have been analyzed and summarized to provide reference for similar bridges. The effectiveness and accuracy of spatial grid analysis methods has been finally validated through a practical cable-stayed bridge.
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참고문헌 (20)
참고문헌 신청
Hassanein, M. F. / 2013 / Behavior of bridge girders with corrugated webs : (II)Shear strength and design / Eng. Struct 57:544~543
He, J. / 2007 / Analysis on structural system and mechanical behavior of box girder bridge with corrugated steel webs / Proceedings of the 3rd International Conference on Steel and Composite Structures (ICSC07) :489~494
Jun He / 2012 / Mechanical Behavior and Analysis of Composite Bridges with Corrugated Steel Webs: State-of-the-Art / International Journal of STEEL STRUCTURES 12(3):321~338
Lizhong Jiang / 2013 / Distortional and local buckling of steel-concrete composite box-beam / Steel and Composite Structures, An International Journal 14(3):243~265
Kim, K. S. / 2011 / Flexural behavior of prestressed composite beams with corrugated web: part I. Development and analysis / Composites : Part B 42(6):1603~1616
He, J. / 2007 / Analysis on structural system and mechanical behavior of box girder bridge with corrugated steel webs / Proceedings of the 3rd International Conference on Steel and Composite Structures (ICSC07) :489~494
Jun He / 2012 / Mechanical Behavior and Analysis of Composite Bridges with Corrugated Steel Webs: State-of-the-Art / International Journal of STEEL STRUCTURES 12(3):321~338
Lizhong Jiang / 2013 / Distortional and local buckling of steel-concrete composite box-beam / Steel and Composite Structures, An International Journal 14(3):243~265
Kim, K. S. / 2011 / Flexural behavior of prestressed composite beams with corrugated web: part I. Development and analysis / Composites : Part B 42(6):1603~1616
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