Discussion about the Limit Span of Self-Anchored Suspension Bridge and Influencing Factors

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Abstract:

Based on the material strength limit conditions of cable and stiffening girder, the static analysis of self-anchored suspension bridge was calculated. The stiffening girder of self-anchored suspension bridge was assimilated with elastic foundation girder. Considering of the action of both axial force and bending moment, the limit span of self-anchored suspension bridge was discussed. The limit span equation of three-span self-anchored suspension bridge with two towers was deduced. The influencing factors, such as ratio of rise to span of main cable, cross-sectional area and spacing of hangers, are studied, and the corresponding limit spans were given. It can provide valuable reference for the primary design of self-anchored suspension bridge.

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1473-1476

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July 2014

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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