【摘要】 以某3跨铁路连续梁桥更换支座为例,对顶梁过程进行力学研究,通过计算及控制顶升过程中梁体的应力以及钢轨的应力,确定了切实可行的实施方法。研究表明控制顶升位移或顶升力是顶升更换支座的关键。更多还原

【Abstract】 Taking the bearing replacement in a three-span continuous girder in railway bridge as an example,the mechanics research on the beam lifting process was carried out. The practical implementation methods are determined by computing and controlling the stress of the beams and the stress of the rails during the lifting process. The study shows that the lifting displacement or the lifting force are the key points in bearing replacement construction.更多还原