Construction method of simply supported-continuous switching system of negative moment beam prestressed precast box beam

Box negative moment of prestressed beams Simply Supported continuous conversion method of construction, the construction process of the system includes, in order: preparing the construction, Actinomyces displacement of the beam cap beam, and beam support mounting rubber isolator bottom plate, making installation a temporary support, tank beam installation place of shipment, the connection Liang Duan steel, prestressed beam negative moment and is connected through pipe bundles, the construction beam, prestressing the beam through the beam negative moment tension and pore filling, and longitudinal wet removal of temporary support construction joints . Using negative moment prestressed beam pipe connection, having a smooth surface and a high compressive strength, and can withstand the pressure box girder beam to pass the cover will help to ensure the quality, improve the safety factor. Facilitate standardization technical operations, shorten the construction period, economical, continuous system having a box girder rigidity, small deformation, less joints and driving comfort; improving the safety and reliability of the conversion system, to facilitate quality control and safety girder Wen Ming construction management.