Three-dimensional Finite Element Modelling of Composite Slabs for High Speed Rails

[摘要] Currently precast steel-concrete composite slabs are being considered on railway bridges as a viable alternative replacement for timber sleepers. However, due to their nature and the loading conditions, their behaviour is often complex. Present knowledge of the behaviour of precast steel-concrete composite slabs subjected to rail loading is limited. FEA is an important tool used to simulate real life behaviour and is widely accepted in many disciples of engineering as an alternative to experimental test methods, which are often costly and time consuming. This paper seeks to detail FEM of precast steel-concrete slabs subjected to standard in-service loading in high-speed rail with focus on the importance of accurately defining material properties, element type, mesh size, contacts, interactions and boundary conditions that will give results representative of real life behaviour. Initial finite element model show very good results, confirming the accuracy of the modelling procedure.

[发布机构] Department of Civil Engineering, University of Birmingham, United Kingdom^1;Birmingham Centre for Railway Research and Education, University of Birmingham, United Kingdom^2

[效力级别] 无线电电子学

[关键词] Composite slab;Experimental test;High speed rail;Loading condition;Railway bridges;Service loading;Steel-concrete composite slabs;Three dimensional finite elements