五、顶推施工过程本桥顶推工艺的特点是多点、分级、同步控制。本桥箱梁预制场没在桥头第六孔内。大梁在完成钢束张拉后,由安装在各墩上的水平千斤顶,通过拉杆与固定在箱梁上的拉锚器拉动箱梁在滑道上前进。待千斤顶走完行程后,油泵反向供油,使活塞退回原位,如此往复循环,将箱梁拉出预制场,然后进行孔道灌浆。 Fifth, push the construction process The characteristics of the bridge push technology is multi-point, grading, synchronous control. Beam Prefabricated Bridge Bridge in the sixth hole is not. After the beam is tensioned by the girder, the horizontal jacks mounted on the piers are used to pull the box girder through the tie rods and the anchors fixed on the box girder to advance on the runway. After the jack is finished, the oil pump supplies oil in the reverse direction to return the piston to its original position, so that the box beam can be pulled out of the prefabricated yard and then grouted in the hole.