Based On Ansys Ballasted Track Bridge Welded Turnout And Displacement

Both seamless turnout and seamless turnout on bridge are key techniques for high speed railway and heavy haul railway to strengthen track structure. The mechanical mechanisms of both seamless turnout and seamless turnout on bridge are very complex and they have always been the focal points and difficulty points of railway modernization technique research.Many experts in the world proposed all kinds of different jointless switch computation theory and the method, and have carried out the related experimental study. But so far, mature and unified method has not been agreed.Based on the finite element principle, a model of seamless turnout and seamless turnout on bridge have been established. According to the characteristic of the elements in ANSYS, different elements are choosed to simulate the rail, tie, fastening, ballast, spacer block, restricting device and bridge so on. Analysis and calculation are carried out on the temperature stress and deformation of NO. 18 turnout and seamless turnout on bridge by using the model and appropriately parameters selected.The sentivity of each jointless switch design parameter is analyzed based on the modle. The distribution rules of the tensile and temperature force and displacement of seamless turnout on simple-supported beam bridge, seamless turnout on continuous beam bridge, seamless turnout on continuous frame bridge, and crossover on continuous beam bridge were analyzed.Analysis system of welded turnout is developed based on the fundamental features of ANSYS. Using UIDL to design user interface, establish eyeable dialog box, which realizes the input of parameters and APDL to realize modification of parameters and embedment of module, which makes the modules be a part of ANSYS.The research findings of this paper are important to guide the design, construction and maintaining of seamless turnout on bridge.