Structural Engineering and Mechanics

  • 제62권1호
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  • Pages.85-95
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  • 2017
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Form-finding analysis of suspension bridges using an explicit Iterative approach

  • Cao, Hongyou (Department of Civil and Environmental Engineering, National University of Singapore) ;
  • Zhou, Yun-Lai (Department of Civil and Environmental Engineering, National University of Singapore) ;
  • Chen, Zhijun (School of Civil Engineering & Mechanics, Huazhong University of Science & Technology) ;
  • Wahab, Magd Abdel (Division of Computational Mechanics, Ton Duc Thang University)
  • 투고 : 2016.09.19
  • 심사 : 2017.01.23
  • 발행 : 2017.04.10
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents an explicit analytical iteration method for form-finding analysis of suspension bridges. By extending the conventional analytical form-finding method predicated on the elastic catenary theory, two nonlinear governing equations are derived for calculating the accurate unstrained lengths of the entire cable systems both the main cable and the hangers. And for the gradient-based iteration method, the derivation of explicit calculation for the Jacobian matrix while solving the nonlinear governing equation enhances the computational efficiency. The results from sensitivity analysis show well performance of the explicit Jacobian matrix compared with the traditional finite difference method. According to two numerical examples of long span suspension bridges studied, the proposed method is also compared with those reported approaches or the fundamental criterions in suspension bridge structural analysis, which eventually confirms the accuracy and efficiency of the proposed approach.

키워드

과제정보

연구 과제 주관 기관 : Central Universities, National Natural Science Foundation of China

참고문헌

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