顶推法是架设预应力混凝土桥梁的一种快速、省力、安全而经济的方法。其特点是:在桥台后面桥轴方向上设立预制构件场,连续地制造大型块件,把这些块件陆续拼成一体并向桥位推出,梁体沿着设于桥墩台(或临时支撑)上的滑动支承移动到规定的位置上后,再施 Thrusting is a fast, labor-saving, safe and economical method of setting up prestressed concrete bridges. The utility model is characterized in that a prefabricated component field is set up in the direction of the bridge axle behind the abutment platform to continuously manufacture large block pieces which are put together one after another and pushed out to the bridge position. The beam body is arranged along the abutment abutment (or temporary support) Of the sliding bearings to move to a predetermined position, and then Shi