Temperature Change Influence on Strands Tensile Force in Anchor-Span Suspension Bridge

Abstract:

Two methods are proposed to study the temperature change influence on strands tensile force in anchor-span suspension bridge, and each force in side-span. The one is based on the relational expression between temperature change and strands force variation; and the other is based on calculation program. Then, take Zhujiang Huangpu Bridge for example. The result shows that: the results of two methods approximate to each other; when the splay saddles are fixed, temperature change generates larger influence of the tensions in anchor span, than the tensions in side-span. The temperature influence coefficient in anchor span reach to -6~-7 kN/°C,while in side-span are -1 kN/°C or so. When the temperature changes exceed ideal temperature range, the force difference between side-span and anchor span will go beyond its maximal friction, so when in construction, measures should be taken to avoid strands sliding. By comparison, when the splay saddles are free, the influence coefficient is much smaller.

• Periodical: Applied Mechanics and Materials (Volume 147)
• Pages: 161-165
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.147.161
• Online since: December 2011
• Authors: Hong Mei Tan, Yong Zeng, Shu Hong Sun
• Keywords: Anchor Span, Friction, Side-Span, Suspension Bridge, Temperature, Tensile Force

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