Innovative Design of Railway Steel-Concrete Mixed Box Girder Cable-Stayed Bridge
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Détails bibliographiques
| Auteur(s): |
Shidong Luo
Zhenbiao Liu Jiahua Zeng |
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| Médium: | papier de conférence | ||||
| Langue(s): | anglais | ||||
| Conférence: | IABSE Symposium: Engineering for Progress, Nature and People, Madrid, Spain, 3-5 September 2014 | ||||
| Publié dans: | IABSE Symposium Madrid 2014 | ||||
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| Page(s): | 1618-1625 | ||||
| Nombre total de pages (du PDF): | 8 | ||||
| Année: | 2014 | ||||
| DOI: | 10.2749/222137814814068003 | ||||
| Abstrait: |
The Yongjiang Railway Bridge carrying 2-lines heavy-load railways is a steel-concrete mixed box girder cable-stayed bridge with the span arrangement of 53 50+50+66+468 66+50+50+53 m. The stiffening girder is a closed and streamlined box girder with two materials longitudinally: the center 419m of main span is steel box girder installed by deck cranes and the rest of the girder is site-cast concrete box girder. Considering that the railway bridge possesses characteristics of carrying heavy railway live load, high requirements for the stiffness of the whole structure, fixed railway tracks, an innovative concept of the structural system for long-span railway bridges is carried out, and three Innovative Technologies is obtained including orthotropic steel deck stiffened by V-shaped ribs, steel-concrete joint with ladder-shaped concrete filled in and frontal/ posterior compression-bearing plates, bilateral–bearing-load cable-girder steel anchorage box. The experimental research proves that orthotropic steel deck stiffened by V-shaped is superior in fatigue behaviour, the proposed new types of steel cable-girder anchorage box and steel-concrete joint both have good performance in the force transferring and fatigue properties. And also vehicle-bridge coupling vibration analysis also shows that the steel-concrete joint achieves smooth transition of stiffness and the trains run smoothly. |
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