Fatigue tests on aluminium bridges

Heron

Johan Maljaars¹  Frans Soetens¹ 

[1] 1 TNO Building and Construction Research and Technical University of Eindhoven, Faculty of Architecture, Building and Planning, Structural Design, The Netherlands

关键词: Design;    fatigue;    tests;    aluminium;    bridges;   

DOI  :  

学科分类：建筑学

来源: Technische Universiteit Delft * Faculty of Civil Engineering

【 摘 要 】

Traffic bridges are subjected to variable loads and should therefore be checked on fatigue. Especially low weight materials, like aluminium, are sensitive to fatigue, because the variable load is a substantial part of the total load. This paper shows the structural design of an aluminium bridge loaded by heavy traffic. The S-N curves of a welded detail that is often applied in the deck of aluminium bridges were determined by testing and the test results were compared to the standard S-N curve prescribed by standard prEN 1999-1-3 (1). Additional tests were carried out in which the passage of vehicles was simulated on a model of the entire bridge, in order to obtain a better approximation of the real fatigue load on the bridge. The fatigue lifetimes resulting from these tests are compared to the arithmetical lifetimes, determined by using the S-N curve and Miners`s summation.The paper shows that aluminium is suitable as structural material for heavily loaded bridges.

【 授权许可】

Unknown