Assembled Level Crossing Design Calculations And Construction Technology Research

With a sharp increase in urbanization speed up, the road construction road formedthe original new flat crossing in railway construction. Due to historical and realisticreasons, reasonable and effective processing rail road crossing the intersection of realitybecomes all the more urgent. It is an unavoidable problem that appeared in the course ofurban development and railway level crossing. Rapid economic development, the rapiddevelopment of traffic volume, created serious speeding overload phenomenon. Withthe improvement of train speed and density, load, crossing safety also have higherrequirements.This paper surveys the city level crossing on the background of the application,based on analysis of urban destruction in the form of level crossing on the selection ofmaterials studied at the city level crossing crossing board failure mechanism, compareand analyze the application of crossing board materials at home and abroad, it providedlevel crossing on the city’s choice of materials.while Fortran language program writtenby theory and ANSYS12.0established orbital mechanics finite element model analysisof the stress plate crossing panels in train loads and car loads failure modes. This workis mainly completed as follows:(1)Through field surveys, research at the highway crossing failure modes, roadcracks, subsidence, ruts, loose, eating side and other diseases. Investigate differentcrossing board materials, including steel track paving, rubber wire crossing board,monolithic reinforced concrete crossing board, analyses their advantages anddisadvantages.(2)The composite double beam model are based on the assumptions that combinedwith orbital mechanics model. With the help of a Visual Fortran program theoryanalysis, calculation and analysis crossing plate bending moment and displacement.Combined with elastic foundation model and assumed that load stress analysis under three load pavement, plate, plate edge in the middle and voids corner position formulaof stress theory to calculate the vehicle braking loads.(3) Combined with the actual situation, using ANSYS12.0orbit-crossing platefinite element model is established, in the train load and vehicle load were analyzedinternal force variation law, Calculated according to the weak position, because of theunequal stiffness optimize the strength is easy to cause rail displacement obviouslyuneven, with the method of crossing board laid at the bottom of the rubber pad, it solvesthe non-uniform change of track stiffness.(4) Based on theoretical calculations and ANSYS simulation contrast, the relativeaccuracy of the simulation results calculated.(5)According to characteristics of grade crossing, combined with the constructionunit of construction methods, innovative "bottom-up" rapid construction method.Ensure the normal operation of the road for construction at night, and use the "JS heightadjustment mortar bag construction law"to speed up the construction.