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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.71 No.6
- 발행연도
- 2019.1
- 수록면
- 603 - 625 (23page)
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초록· 키워드
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Main cable configurations under final dead load and in the unloaded state and critical construction parameters (e.g. unstrained cable length, unstrained hanger lengths, and pre-offsets for tower saddles and splay saddles) are the core considerations in the design and construction control of a suspension bridge. For the purpose of accurate calculations, it is necessary to take into account the effects of cable strands over the anchor spans, arc-shaped saddle top, and tower top pre-uplift. In this paper, a method for calculating the cable configuration under final dead load over a main span, two side spans, and two anchor spans, coordinates of tangent points, and unstrained cable length are firstly developed using conditions for mechanical equilibrium and geometric relationships. Hanger tensile forces and unstrained hanger lengths are calculated by iteratively solving the equations governing hanger tensile forces and the cable configuration, which gives careful consideration to the effect of hanger weight. Next, equations for calculating the cable configuration in the unloaded state and pre-offsets of saddles are derived from the cable configuration under final dead load and the conditions for unstrained cable length to be conserved. The equations for the main span, two side spans and two anchor spans are then solved simultaneously. In the proposed methods, coupled nonlinear equations are solved by turning them into an unconstrained optimization problem, making the procedure simplified. The feasibility and validity of the proposed methods are demonstrated through a numerical example.
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참고문헌 (21)
참고문헌 신청
Hongyou Cao / 2017 / Form- finding analysis of suspension bridges using an explicit Iterative approach / Structural Engineering and Mechanics, An Int＇l Journal 62(1):85~95
Zhijun Chen / 2015 / Improved Particle Swarm Optimization-Based Form-Finding Method for Suspension Bridge Installation Analysis / Journal of Computing in Civil Engineering 29(3):04014047
Chen, Z. / 2015 / An iterative calculation method for suspension bridge’s cable system based on exact catenary theory / Baltic J. Road Bridge Eng 8(3):196~204
Irvine, H. M. / 1981 / Cable Structures / The MIT Press
H.B. Jayaraman / 1981 / A curved element for the analysis of cable structures / Computers & Structures 14(3-4):325~333
Zhijun Chen / 2015 / Improved Particle Swarm Optimization-Based Form-Finding Method for Suspension Bridge Installation Analysis / Journal of Computing in Civil Engineering 29(3):04014047
Chen, Z. / 2015 / An iterative calculation method for suspension bridge’s cable system based on exact catenary theory / Baltic J. Road Bridge Eng 8(3):196~204
Irvine, H. M. / 1981 / Cable Structures / The MIT Press
H.B. Jayaraman / 1981 / A curved element for the analysis of cable structures / Computers & Structures 14(3-4):325~333
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