大跨径连续刚构桥箱梁施工裂缝控制措施

Crack control measures for box girder construction of long-span continuous rigid frame bridge

以某0~5#大跨径连续刚构箱梁施工过程中腹板出现施工裂缝为例,提出从混凝土浇筑、预应力张拉、混凝土养护以及设计四方面对裂缝进行控制,取得了较好的工程应用效果。

Taking a 0~5#long-span continuous rigid frame box girder as an example,this paper proposes to control the cracks from four aspects of concrete pouring,prestressed tensioning,concrete maintenance and design,which has achieved good engineering application results.