【摘要】 计算了当20辆相同的提速客车通过40 m+4×72 m+40 m部分预应力混凝土六跨连续箱形梁桥时,车辆参数对桥梁竖向有载自振频率的影响。结果表明,车辆轮对簧下质量、车辆轮对悬挂弹簧刚度、车辆长度、车体质量等对桥梁竖向有载自振频率有影响,而列车的行车速度对桥梁竖向有载自振频率没有影响。更多还原

【Abstract】 The influence of vehicle parameters on the vertical loaded free frequencies is calculated, when 20 same high-speed passenger vehicles are traveling on the bridges. The results show that the vertical loaded free frequency of the continuous pre-stressed concrete bridge is related to the lower spring mass and the stiffness of the spring for each wheel-set of the vehicle, the vehicle’s length and the mass of the vehicle. However, it is independent of the velocity of the train.更多还原