重载交通条件下预应力混凝土预制箱梁的设计研究

The Design and Study of Precast Prestressed Concrete Box Girder on the Condition of Heavy Vehicles

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。

The highway from Yulin to Jiaxian is an important energy transport corridor in Shaanxi, and large trucks, heavy trucks and trailers accounte for a large proportion in the traffic composition. Through site investigation, two kinds of vehicle load model are established, under which calculations and analysis are carried out. After comparison between the new load and Highway-I load, precast prestressed concrete box girder is re-designed.