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桥上无缝道岔是当前客运专线建设中的重点、难点与热点问题。桥上无缝道岔既要考虑桥上无缝道岔的梁轨相互作用,又要考虑无缝道岔中钢轨受力和变形的复杂关系。根据相似三定律设计试验所用模型,将实际中遇到的温度变化对系统的影响模拟到试验中,并模拟了多种梁系与轨道结构形式,通过试验数据分析,明确了桥梁与无缝道岔的相互作用关系,为建立桥上无缝道岔计算理论提供依据,继而指导桥上无缝道岔设计。
Seamless turnout on the bridge is the focus of the current construction of passenger dedicated line, difficulties and hot issues. The seamless turnout on the bridge not only considers the beam-rail interaction of the seamless turnout on the bridge, but also takes into consideration the complicated relationship between the stress and the deformation of the rail in the seamless turnout. Based on the similar three laws, the model of the experiment was designed, and the influence of temperature change on the system was simulated into the experiment, and a variety of beam and track structures were simulated. Based on the experimental data, , Provide the basis for establishing the calculation theory of the seamless turnout on the bridge, and then guide the design of the seamless turnout on the bridge.