Beijing-Tianjin intercity railway

Beijing-Tianjin intercity rail transit project Beijing Ring Road Bridge across Dayangfang Bridge is a prestressed concrete double-line continuous beam. The total length of the bridge is 221.5m, the span is 60 + 100 + 60m, the height of the middle fulcrum beam is 7.85m, the height of the straight section and the side span 15.75m is 4.85m, the lower edge of the beam changes according to the secondary parabola, and the center line of the side support to the beam end is 0.75m. The beam body is a single box, single chamber, variable height, variable section structure. The top width of box girder is 13.4m, and the bottom width of box girder is 6.7m. The thickness of the roof varies from 40 to 50cm and 50 to 60cm according to the broken line. The thickness of the bottom plate is 40 to 120cm, changing linearly in a straight line, and the web thickness is 60 to 80cm, 80 to 100cm, changing according to the broken line. Bridge deck width: the inside width of the anti-collision wall is 9.4m, the inside width of the sidewalk railing on the bridge is 13.2m, the deck width is 13.4m, the total width of the bridge building is 13.8m the maximum cantilever pouring beam weight is 162.114t.

Main features: simple operation, strong stability, light weight, full hydraulic control. Through various data detection, its performance can be comparable to the world's advanced level.