Method to construct the prestressed composite beam structure and the prestressed composite beam for a continuous beam thereof

摘要: A prestressed composite beam structure from which the expansion joints, were inevitably used in conventional can be removed so that structural and functional problems owing to joints solved span of beams lengthened, construction materials considerably saved. The method made into divided short order overcome difficulties transportation handling cases where length is long. After preflexion loads have been applied was profiled reverse sag curve continuous structure, concrete cast cured on flange, then removed. negative moment connection between by lifting or lowering support. For quick easy assembling with slab, has shear key grooves a reinforcing beam.