Contribution to Book
Nonlinear 3D finite element modeling for structural failure analysis of concrete sleepers/bearers at an urban turnout diamondHandbook of Materials Failure Analysis (2016)
AbstractRailway urban turnout is a special track system used to divert a train from a particular direction or a particular track onto other directions or other tracks. It is a structural grillage system that consists of steel rails, points (or called “switches”), crossings, steel plates, rubber pads, insulators, fasteners, screw spikes, beam bearers (either tim- ber, polymer, steel, or concrete), ballast and formation. There are two types of turnouts, a conventional turnout and a tangential turnout. Standard conventional turnouts are designed typically for straight main line track. The combination of switch length, heel angle, and cross rate defines the turnout type, and they all typically have the same components. Tangential turnouts are defined by the radius of the turnout. Components in a tangential turnout vary as manufacturers place their own designs over the standard configuration. The traditional turnout structure generally imparts high-impact forces on to its structural members because of its blunt geometry and mechanical connections between closure rails and switch rails (i.e., heel-block joints). The purpose of this chapter is to demonstrate an engineering failure analysis of a complex structural system using a case study of turnout diamond, which is often found in railway network. Nonlinear finite element modelling of complex urban diamond has been developed and validated with field measurements. Failure mode analysis has been highlighted in this chapter.
- Railway turnout; diamond; track; train-track interaction; nonlinear finite element; failure mode; switches and crossings; structural health monitoring
Publication DateJanuary 1, 2016
EditorASM Makhlouf and M Aliofkhazraei
Citation InformationMinh Vu, Sakdirat Kaewunruen and Mario Attard. "Nonlinear 3D finite element modeling for structural failure analysis of concrete sleepers/bearers at an urban turnout diamond" 1Oxford UKHandbook of Materials Failure Analysis Vol. 1 (2016)
Available at: http://works.bepress.com/sakdirat_kaewunruen/59/