预应力混凝土连续梁悬灌法施工的线形控制

Alignment Control of Contruction for CantileverCasting Prestressed Concrete Beam

结合张家跨线桥连续梁的施工，着重阐述了采用挂篮悬臂灌注施工过程中产生挠度的一些因素、设置预拱度以及进行线形控制的有效措施，以期确保合拢精度。

By taking construction of continuous girder of Zhangjia overpass bridge as an example some factors of producing deflection in the process of cantilever casting ,setting prearch and efficent methods of alignment control are specially introduced,so that to guarantee the accuracy of closure.