Due to the influence of concrete creep and long-term loads,deformation of the high-speed dedicated passenger railway track girders increases with time gradually.

• 由于混凝土徐变的影响,高速客运专线轨道梁在长期荷载的作用下,变形随着时间不断增加,严重影响了轨道梁的使用性能,甚至危及行车安全。