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- Title
Research on Main Bridge Scheme of Liujing Yujiang Special Bridge of Nanning-Yulin High Speed Railway.
- Authors
CHEN Gang
- Abstract
To meet the navigational requirements, the Liujing Yujiang Super Major Special Bridge of Nanning-Yulin High Speed Railway requires 320 m main span bridge structure, and the main bridge design scheme needs to be studied in depth. Through comparative analysis method, the bridge position and bridge type scheme are studied. For the recommended scheme, key parameters of the bridge design are determined by studying the steel-concrete partial cable-stayed bridge structure system, bridge restraint system, setting of auxiliary piers, side span to main span ratio, height of main girders, location of steel-concrete combined section setting, influence of the bridge tower on the stiffness of main girders, and other key design issues. Structural design is carried out according to the determined relevant parameters. Dynamic simulation analysis of rain, track and bridge is conducted. Research shows that: the main bridge adopts (40.75+109+320+109+40.75) m of steel-mixed partial cable-stayed bridge structure; the structure system employs plane semi-floating system and left tower sets fixed support; one auxiliary pier is set in the side span; the side span to main span ratio is 0.47; the beam height of the fulcrum is 14.5 m, the beam height of the middle span beam is 6.0 m; effective tower height above the bridge deck is 55 m; and the dynamic performance of bridge is excellent.
- Subjects
NANNING (China); HIGH speed trains; CABLE-stayed bridges; BRIDGE design &; construction; STRUCTURAL design; BRIDGE floors; DYNAMIC simulation
- Publication
Railway Standard Design, 2023, Vol 67, Issue 8, p89
- ISSN
1004-2954
- Publication type
Article
- DOI
10.13238/j.issn.1004-2954.202203150005