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| Research on the Key Technologies for Design of Continuous Welded Rails (CWR)on Large—span Basket Handle Arch Bridge |
| LIU Wen—-bing |
| China Railway Siyuan Survey and Design Group Co．Ltd，Wuhan，Hubei 430063，China |
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Abstract Research purposes: By studying the deformation law of large—span basket handle arch bridge under the effects of the temperature change and train load and establishing the non—linear finite element calculation model for the CWR on the basket handle arch bridge with ballastless track．the analyses of the interaction of the bridge and rail are made for the deformation，vertical force，expansion displacement and deflection displacement of CWR on 140 m span basket handle arch bridge with ballastless track to provide the support for the design and construction bridge and CWR．
Research conclusions: In the calculation of expansion force，the same calculation method as that for simply—supported beam or continuous beam Can be adopted for the of expansion displacement of basket handle arch bridge．The max．Flexural displacement caused by train load is less than the expansion displacement caused by temperature change，and the rail flexural force is less than the rail expansion force．So in general，the flexural force does not control rail calculation，but it may control the design calculation of piers．
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Received: 10 March 2009
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2009, Vol. 26 
