连续梁桥整体顶升方案及应力应变测试研究

The study on the jack-up scheme of the continuous girder bridge and stress-strain test

以京沪高速公路淮安废黄河大桥为例,研究了连续梁桥支座更换工作中多孔桥梁整体顶升方案,并采用电阻应变法监测试顶过程中梁体的应力应变增加值,验证了整体施工方案的可行性。

Taking waste Yellow river Bridge at the Huai＇ an in the Beijing-Shanghai highway as an example, the paper studies the jack-up scheme for multi-span bridge girder in the bearing replacement of the continuous girder bridges and points out to adopt the electric resistance- strain method to inspect the increasing number of the strain of the girders in the test of jack-up, and it also proves the feasibility of the construetion scheme.