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ע⣺ՓڡIIWW2003,35(5):625-627l
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Analysis of Concrete Self-anchored Suspension Bridge

ZHANG Zhe SHI Lei LIU Chun-cheng HUANG Cai-liang
( Bridge Institute of Dalian University of Technology, Liaoning ,Dalian,116024,China)

Abstract:The mechanic performance of concrete self-anchored suspension bridge and the contrast with the earth-anchored suspension bridge are researched in this paper. The variational law of concrete self-anchored suspension bridges internal force is analyzed when the camber and the rise-span ratio are changed by the computed results, and the law of the internal force affected by creep is also analyzed. The main difference between the earth-anchored suspension bridge and the self-ahchored suspension bridge is the axial force of main girder. Otherwise, there is no less than 10% difference in all other internal force between the two types of bridges. The effect of arch degree, creep and shrink of concrete is very distinct. Ignoring the effect of these factors, the comparison would arrive at a significant deviation of no less than 20%. Elastic theory is applicable to the design and calculation of medium-span self-anchored suspension bridges.
Key words: concrete, self-anchored suspension bridge, suspension bridge, construct analysis

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