LONGITUDINAL INTERACTION BETWEEN BALLASTED TURNOUT AND SIMPLY SUPPORTED BEAM BRIDGE

摘要

Based on the stress and deformation analysis of jointless turnout law and the mechanism of force transfer, theory of longitudinal interaction between turnout and bridge was proposed and a turnout-beampier integrated calculation model was established. The finite element method was used to analyze the turnout-bridge interaction. Through the study of stress and deformation of ballasted jointless turnout on simply supported beam, this paper puts forward such design requirement as avoiding the peak value of additional force in the turnout zone, decreasing the turnout crawling as much as possible, etc.