Study Of Foundation Style Choice To The Continuous Welded Turnouton On Ballastless Bridge

The paper systematically summarizes current research situation of the domestic and foreign railway turnoutones and discusses the overseas high-speed railway turnouton design notions. It makes out that the high-speed railway turnouton lever of the domestic absolutely falls behind the advanced lever of the foreign. While the research to the continous welded turnouton on Ballastless bridge doesn't start, but it stares us in the face.It simple sentence the two typical bridge Ballastless track types by using cam and door-style reinforcement bar's joint between the bridge and track slabs(the continous welded turnouton on Ballastless bridge of the Germany RHEDA2000 and the domestic urban railway track traffic). It compares the compositions of the system and the design technical requirements with them.It builds the integration of track-slab-bridge-pier Longitudinal Force calculation model of seamless turnout on bridge of Ballastless Track by ANSYS. In calculation model, steel rail is simplified to bar elements; ballast bed slab is shell elements; fastener, cam, door-style reinforcement bar and pier are spring elements. It can analyze longitudinal forces, longitudinal displacements and stresses of each railway track component part under the condition of longitudinal forces. The paper also carried on the parameter analysis in view of the computation model. The paper makes use of the builded analysis model to analyze the force and displacement of two types bridge Ballastless Track by contrast, which mainly comprises longitudinal force and displacements of stock rails, force of the pass-force components, point tongue and point rail's displacement, longitudinal force and displacements of Pier, the stresses and displacements to track slab and bridge, and the cam and door-style reinforcement bar's forces under the condition of temperature force. By analysis, it concludes the cam basement is better than door-style reinforcement bar basement. Based on it, the paper also analyzes the influence because of the various parameters to the cam Bridge Ballastless railway turnouton, including fastener resistance pressure, cam rigidness, pier rigidness, different supports arrangement types and so on, and educes some conclusion and advices.