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榆林至佳县高速公路是陕西省重要的能源运输大通道,交通量构成中的大货车、特大货车及拖挂车占相当大的比例。通过实地调研,建立两种车辆荷载模型,并在新的荷载模型下进行计算分析,与公路-Ⅰ级荷载对比后,对预应力混凝土预制箱梁进行重新设计研究。
Yulin to Jiaxian Expressway is an important energy transportation corridor in Shaanxi Province. Large trucks, large trucks and trailers account for a large proportion of the traffic volume. Through field investigation, two kinds of vehicle load models were established and calculated under the new load model. After comparing with the first-class road load, the prestressed concrete precast box girder was redesigned.