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为探索高速公路桥梁车辆荷载模型的建立方法,选取了沈海高速(G15)福宁段下白石特大桥,基于动态称重(WIM)系统监测信息,在统计分析通行车辆连续到达车间距、车重等信息的基础上,对下白石大桥车辆荷载效应进行了分析,基于分析结果建立了下白石大桥车辆荷载模型,并将该模型应用于真实桥梁的车辆荷载效应评估。研究表明:基于平衡更新过程和荷载等效的车辆荷载理论具有一定的合理性,所建立的车辆荷载模型能够用于既有桥梁的承载能力分析。
In order to explore the establishment method of vehicle bridge load model of expressway, Baishitou Bridge under the Fu Ning section of Shenhai Expressway (G15) was selected. Based on the monitoring information of dynamic weighing (WIM) system, Based on the analysis results, the vehicle load model of Xia Baishi Bridge was established, and the model was applied to evaluate the vehicle load effect of a real bridge. The research shows that the theory of vehicle load based on the equilibrium updating process and load equivalent is reasonable. The established vehicle load model can be used to analyze the bearing capacity of existing bridges.