This paper proposes a test method to evaluate the operability of railway vehicles crossing floating bridges. To inspect the dynamic response of the floating bridge to the railway vehicle, the test setup was separated into wave tank and shake table tests. A scaled-down model representing a unit length of the floating bridge span was manufactured for the wave tank test. Several harmonic waves were artificially created and the displacement at the center above the top surface was measured using an optical position sensor. The response of the floating structure was analyzed to extract the relative amplitude versus the input wave for sway, heave, and roll. The harmonic motions using these responses were simultaneously used as input signals for a six-degree-of-freedom shake table. The scaled-down bogie model ran back and forth repeatedly on the railway placed on the shake table. The acceleration measured from the railway vehicle was analyzed to evaluate the running safety and behavior. All tests were performed without allowing derailment and showed sufficient margin to satisfy the running safety and behavior standards. The proposed test method was successfully conducted and showed a remarkable potential to evaluate the operation of railway vehicles on floating bridges under various wave conditions.

本文提出了一种评估铁路车辆通过浮桥的可操作性的测试方法。为了检查浮桥对铁路车辆的动力响应，将测试装置分为波箱和振动台测试。为波浪箱测试制造了一个缩小模型，该模型代表了浮桥跨度的单位长度。人工制造了几个谐波，并使用光学位置传感器测量了顶面上方中心处的位移。分析了浮动结构的响应，以提取相对振幅相对于输入波的摇摆，升沉和侧倾。使用这些响应的谐波运动同时用作六自由度振动台的输入信号。缩小后的转向架模型在摆在振动台上的铁路上反复来回运行。分析了从铁路车辆测得的加速度，以评估行驶安全性和行为。所有测试均在不允许脱轨的情况下进行，并显示出足够的余量以满足运行安全和行为标准。所提出的测试方法已成功进行，并显示出在各种波浪条件下评估铁路车辆在浮桥上的运行的巨大潜力。