结合杭长高速公路泗安枢纽3号桥独柱墩加固工程的施工,详细介绍了运营通车情况下独柱墩现浇箱梁桥增设支座加固施工的工艺和方法,总结了施工中的控制要点及注意事项,为今后类似工程施工提供了参考。%Combining with single column pier reinforcement engineering construction of Si' an hub 3# on Hang-Chang highway, the paper intro- duces the construction technology and methods of increasing bearing reinforcement of single column pier of east-in-situ box girder bridge under the condition of bridge running, and summarizes construction control points and matters needing attention, which has provide certain reference for similar enganeenng construction in future.
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