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工程力学  2014 

变速移动质量作用下轨道动力响应解析解研究

, PP. 162-169

Keywords: 轨道结构,移动质量,变速,解析解,动力响应

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Abstract:

列车进出站的振动及噪声问题不容忽视,然而目前关于列车变速移动问题的研究相对较少。为了研究进出站列车对周围环境的振动影响,在轨道结构频域周期性解析模型基础上,求解了单个及系列移动质量、移动质量系统变速移动下轨道结构的动力响应。通过求解变速移动质量下简支梁的动力响应,与已有算例进行对比,验证了计算模型的正确性。研究结果表明:移动质量作用下轨道动力响应远大于移动力作用下的动力响应;由于移动质量和轨道结构间的相互作用,轨道的动力响应中包含了较多的振荡成分;随着移动加速度的增大,轨道动力响应略有增大。

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