不中断交通中的旧桥支座更换施工

The construction practices of old bridge bearing replacement under normal transportation condition

支座老化和损坏是桥梁使用运营过程中比较常见的病害,以往的支座更换常常需要较长时间的交通中断,给公路畅通带来很大的困扰。结合工程实例,在维持正常交通情况下,采用千斤顶顶升的方法对一座20mT型简支梁桥的支座进行了更换,取得了良好的工程效果。

Rubber bearing aging and damage is a common disease during bridge operation. The bearing replacement usually need stop transportation long time which block traffic. The paper takes the engineering practice as examples and replaces a bearing of T shape simply supported girder of the bridge with 20m span. It adopts jack method, and obtains good engineering result.