DESIGN AND CONSTRUCTION OF SIDE SPAN BRACKET OF HANJIANG RIVER SUPER-LARGE BRIDGE OF NEW WEST-10 HIGH-SPEED RAILWAY
Hanjiang Super Bridge is a control project of Xi'an to Shiyan railway.The hole span is arranged as(67+70+73+420+73+70+67)m cable-stayed bridge+2 × 32 m simple supported beams.The total length of the side span concrete box beams is 285 m.The width of the top and bottom plates is 17 m.In view of the poor geological condition of the middle span,the steel pipe support of the middle span cast-in-place beam adopts the form of Φ 1 m bored pile foundation to overcome the problem of foundation settlement under the heavy load of the beam.The cast-in-place bracket adopts the form of segmented preloading to reduce the input of preloading block;By calculating the deformation of the support and the prelift value of the beam body,the position of the embedded parts is precisely located,and the positioning frame is used to accurately locate the embedded parts and improve the construction efficiency.
cable-stayed bridgesteel girder reinforced prestressed concrete box girdercast-in-place support
万方数据
维普
