连续梁桥上无缝线路伸缩附加力的研究

A New Computation Model of Additional Contractility for CWR on a Continuous Beam Bridge

通过对梁轨相互作用原理及伸缩附加力分布规律的研究,考虑连续梁中部存在一段梁轨位移相等点的情况,建立新的伸缩附加力计算模型,并用Levenberg-Marquardt算法进行求解、分析。从桥上无缝线路的理论、客观事物规律及工程应用的角度,解释、分析出现附加力平台的现象。

There exists a section of beam on the continuous bridge with spots of the same displacements on the rail and on the bridge. That was found after studying the interaction behavior between the railway bridge and CWR and the distribution rule of additional contractility. A new computation model of additional contractility can thus be set up to calculate and analyze additional forces by using Levenberg-Marquardt algorithm The existence of additional contractility ofCWR on the bridge is analyzed and explained by the principle of CWR, objective laws and engineering application.