预应力砼箱型连续梁支架法现浇施工技术

Cast-in-place Construction Technique Of Support Methods For Prestress Concrete Box Girder Continuous Beam

按满布支架法和梁柱支架法分别提出了混凝土箱梁现浇施工中易被忽视的问题,并建立了受力分析模型,阐明了分次浇筑预应力混凝土箱梁会在混凝土内产生残余应力,可通过选择合理的施工方法和浇筑顺序减小残余应力。

This paper puts forward the problems in the cast- in- place construction of concrete box girder according to suffusion support and beam column support method, establishes understress analysis model, states that placing prestress concrete box girder will produce residual stress in concrete and the reasonable construction method and placing order will reduce it.