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利用加固的旧桥墩台基础,在其上搭设顶升支架和液压顶升系统,然后解除盖梁的垂直约束和水平约束,将盖梁与板梁分步顶升到设计标高。
The reinforced bridge pier foundation is used to build the lifting support and the hydraulic jacking system thereon. Then, the vertical constraint and the horizontal constraint of the cover beam are released, and the cover beam and the beam are stepped up to the designed elevation.