超薄千斤顶在桥梁支座更换整体顶升施工中的应用

Ultra-thin Jack’s Application in Integral Jack-up Construction of Bridge Bearing Replacement

在桥梁结构中,由于橡胶支座本身老化,钢板支座锈蚀失效等问题,有些已直接影响到桥梁上部结构安全,需要在不破坏桥梁本身结构的情况下对支座进行整体更换,恢复原有功能,保证桥梁运行安全,通过对桥梁支座整体更换,采用新的施工方法和措施。

In the structure of the bridge, because of the aging of the supporting stand itself and the rust-eaten and inactivation of the steel-plate supporting stand, some problems have directly threatened the safety of the upper structure of the bridge. It is urgent to make integrated replacement for the supporting stands without destroying the bridge structure so that the bearer can resume the intrinsic function and ensure the performance safety of entire bridge. This paper makes a brief introduction on the construction methods and measures adopted in integral replacement of bridge bearing.