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First application of CFRP cables for a cable-stayed bridge in China, China Civil Engineering Journal, 2007, 40,(1,): 54–59. Application prospect of CFRP to super length suspension bridge and cable-stayed bridge, Bridge Construction, 2002, 2,: 75–78. Carbon fiber-reinforced polymers: Modern materials in bridge engineering, Structural Engineering International, 1992, 2,(1,): 7–12. Carbon fiber reinforced polymer cables: Why? Why Not? What If?, Arabian Journal for Science and Engineering, 2012, 37,(2,): 399–411. Proposal for a carbon fiber reinforced composite bridge across the strait of Gibraltar at its narrowest site, Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 1987, 201,(2,): 73–78. 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. Moreover, the influences on the static performance of suspension bridge by span and sag ratios are also analyzed. 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. In each case, the deflections resulting from elastic elongation or solely due to geometrical displacement are analyzed for the lower elastic modulus CFRP. 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. The influences on the increment of cable force and displacement by λ 2 and load ratio p ′ are analyzed, respectively. The formula of the Irvine parameter is considered and its physical interpretation as well as its relationship with the chord gravity stiffness is presented. Subsequently, the inextensible cable case is introduced. 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.
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The feasibility of longer spans relies on the successful implementation of new high-strength light weight materials such as carbon fiber reinforced polymer (CFRP).