双向无粘结预应力井字梁施工

Two-Way Non-adhesive Prestressed Criss-Cross Girder Construction

双向无粘结预应力混凝土井字梁结构施工中,采取在端头承压垫板上钻小孔定位无粘结筋、与群锚配套使用,省去铸铁喇叭管,简化了施工方法。

The construction of two -way non -adhesive prestressed cri-ss - cross girder is simplified by adoption of such methods as drilling small holes on load-bearing pad under girder's ends, using non-adhesive spacer bar and group anchor, and omitting cast - iron flare tube.