在渠系配套工程中,拱桥涵轻型墩台目前已被广泛采用,与重力式墩台比较,可节约工程量30～40％,经济效果相当显著。在已建的轻台拱桥涵中,有的上部结构出现了程度不同的裂缝或破坏,究其原因,除了构造及施工处理不当外,多数是因为在结构计算时对墩台变位而引起的附加内力没有足够考虑,所沿用的结构计算方法也不太完善。本文提出如下改进意见。 In the canal supporting project, the arch bridge culvert light piers has been widely used at present, compared with the gravity piers, can save 30 to 40% of the project, the economic effect is quite significant. In the built light arch bridge culvert, some of the superstructure cracks or damage to varying degrees, the reason, in addition to the construction and construction of improper handling, mostly due to structural deformation of the pier caused by the station Additional internal forces are not considered enough, the structural calculation method used is also not perfect. This article proposes the following improvements.