既有桥梁车辆荷载行进过程数学模型构建

Construction of mathematical model for vehicles' loaded passing existing bridge

根据我国现有的车辆荷载样本模型,考虑在不同运行状态下车辆荷载出现的统计规律,提出n辆车行进于桥梁上并且连续到达的概率密度函数的通用表达式及解析表达式。解析表达式可避免通用表达式繁琐的数值计算,为确定桥上最大可能车辆数提供便利。

Utilizing available vehicle load sample model in China and the statistical law of vehicle load under different operation conditions, a general expression and an analytical expression of the probability density function of the vehicles passing in succession on the bridge were presented. The simulation results indicate that the analytical expression can avoid the cumbersome numerical calculation of the general expression, and provides great convenience for determining the maximum possible number of the vehicles passing the bridge.