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Parameters of static response of carbon fiber reinforced polymer (CFRP) suspension cables

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Abstract

The feasibility of longer spans relies on the successful implementation of new high-strength light weight materials such as carbon fiber reinforced polymer (CFRP). First, a dimensionless equilibrium equation and the corresponding compatibility equation are established to develop the cable force equation and cable displacement governing equation for suspension cables, respectively. Subsequently, the inextensible cable case is introduced. The formula of the Irvine parameter is considered and its physical interpretation as well as its relationship with the chord gravity stiffness is presented. The influences on the increment of cable force and displacement by λ 2 and load ratio p ′ are analyzed, respectively. Based on these assumptions and the analytical formulations, a 2000 m span suspension cable is utilized as an example to verify the proposed formulation and the responses of the relative increment of cable force and cable displacement under symmetrical and asymmetrical loads are studied and presented. In each case, the deflections resulting from elastic elongation or solely due to geometrical displacement are analyzed for the lower elastic modulus CFRP. Finally, in comparison with steel cables, the influences on the cable force equation and the governing displacement equation by span and rise span ratio are analyzed. Moreover, the influences on the static performance of suspension bridge by span and sag ratios are also analyzed. The substantive characteristics of the static performance of super span CFRP suspension bridges are clarified and the superiority and the characteristics of CFRP cable structure are demonstrated analytically.

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Authors and Affiliations

  1. School of Civil Engineering, Nanjing Forestry University, Nanjing, 210037, China

    Li-bin Wang  (王立彬) & Yong Wu  (吴勇)

  2. Mechanical Engineering Department, California Polytechnic State University, San Luis Obispo, CA, 93407, USA

    Mohammad Noori

  3. International Institute for Urban Systems Engineering, Southeast University, Nanjing, 210037, China

    Mohammad Noori

Authors
  1. Li-bin Wang  (王立彬)
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  2. Yong Wu  (吴勇)
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  3. Mohammad Noori
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Corresponding author

Correspondence to Li-bin Wang  (王立彬).

Additional information

Foundation item: Project(2010-K2-8) supported by Science and Technology Program of the Ministry of Housing and Urban Rural Development, China; Project supported by the Priority Academic Program Development of Jiangsu Higher Education Institutions, China

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Wang, Lb., Wu, Y. & Noori, M. Parameters of static response of carbon fiber reinforced polymer (CFRP) suspension cables. J. Cent. South Univ. 22, 3123–3132 (2015). https://doi.org/10.1007/s11771-015-2849-3

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  • DOI: https://doi.org/10.1007/s11771-015-2849-3

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