Design of Qingyang Harbor Bridge on Beijing-Shanghai High-Speed Railway

The main bridge of the Qingyang Harbor Bridge on Beijing-Shanghai High-Speed Railway is a basket handle tied arch bridge of Nielsen system with a single span of 96 m.The rise-to-span ratio of the arch ribs of the bridge is 1∶5 and the arch ribs are designed into the catenarian and dumbbell concrete-filled steel tube sections.The tie beams are the prestressed concrete three-cell single-box beams.The suspenders are arranged according to the Nielsen system with spacing distance being 8 m.In a tie beam,16 tie members of epoxy coated steel wire strands are set and in between the two arch ribs,totally 5 cross bracings are provided to connect the arch ribs.The piers of the bridge are the T-shape reinforced concrete solid piers and a foundation under each pier is the one having 18 nos.of 150 cm bored piles.To accommodate to the navigation requirements,the bridge is constructed by the method of erecting the arch ribs first and the girder later and the software Doctor Bridge V3.2.0 is used to conduct calculation of the structural static force of the main bridge.The results of the calculation indicate that the stress of the various sections and the displacement of the main structure of the bridge can satisfy the relevant requirements in the codes.