【摘 要】
:
将列车、双线简支箱梁分别简化为二系悬挂多刚体体系与模态函数,推导了车桥系统动力方程,建立并验证了车桥相互作用模型,对双线简支箱梁在对开列车作用下梁体竖向动力响应规
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将列车、双线简支箱梁分别简化为二系悬挂多刚体体系与模态函数,推导了车桥系统动力方程,建立并验证了车桥相互作用模型,对双线简支箱梁在对开列车作用下梁体竖向动力响应规律进行了研究,研究表明:对开列车作用下,桥梁动力响应与列车运行速度及入桥距离差密切相关;列车以共同速度对开时,可引起的梁体最大挠度动力系数与单线行车作用下基本一致,但梁体动力响应值相当于单线行车引起梁体动力响应值的2倍.
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