A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Flexural Behavior of Prestressed Concrete Box Girders with Corrugated Steel Webs: Review
Since the Cognac Bridge in France was built in 1986, prestressed concrete box girders with corrugated steel webs have been developed for nearly 30 years and now are one of the most competitive structural types in long-span or middle-span girder bridges. Their structural behaviors were the concern of an increasing number of bridge engineers around the world. To clarify the state of the art of their flexural behavior, a literature investigation was conducted, and relatively new research achievements related to the accordion effect, flexural bearing capacity, and shear lag effects were introduced in detail. Studies showed that, under bending, the accordion effect of the corrugated web is significant, and, thus, its contribution to the resistance to the bending moment in a cross-section of box girders is negligible. The accordion effect is dependent on the corrugation profile of the steel web and could affect the efficiency of introducing prestress into the upper and lower concrete slabs. Generally speaking, the calculation method of flexural bearing capacity of prestressed concrete box girders with corrugated steel webs could refer to conventional externally-prestressed structures, but, currently, there are few consistent conclusions related to the aspects of the ultimate stress increment of external prestressed tendons, the secondary effect of these tendons, and parameters influencing their flexural bearing capacity. In addition, the shear lag effect of this type of box girder is more significant than that of a conventional box girder with concrete webs, and, thus, the effective distribution width of concrete slabs should be verified through sufficient experimentation. It is important to establish an effective and efficient flexural design method and to further promote the application and development of prestressed concrete box girders with corrugated steel webs in bridge engineering.
Flexural Behavior of Prestressed Concrete Box Girders with Corrugated Steel Webs: Review
Since the Cognac Bridge in France was built in 1986, prestressed concrete box girders with corrugated steel webs have been developed for nearly 30 years and now are one of the most competitive structural types in long-span or middle-span girder bridges. Their structural behaviors were the concern of an increasing number of bridge engineers around the world. To clarify the state of the art of their flexural behavior, a literature investigation was conducted, and relatively new research achievements related to the accordion effect, flexural bearing capacity, and shear lag effects were introduced in detail. Studies showed that, under bending, the accordion effect of the corrugated web is significant, and, thus, its contribution to the resistance to the bending moment in a cross-section of box girders is negligible. The accordion effect is dependent on the corrugation profile of the steel web and could affect the efficiency of introducing prestress into the upper and lower concrete slabs. Generally speaking, the calculation method of flexural bearing capacity of prestressed concrete box girders with corrugated steel webs could refer to conventional externally-prestressed structures, but, currently, there are few consistent conclusions related to the aspects of the ultimate stress increment of external prestressed tendons, the secondary effect of these tendons, and parameters influencing their flexural bearing capacity. In addition, the shear lag effect of this type of box girder is more significant than that of a conventional box girder with concrete webs, and, thus, the effective distribution width of concrete slabs should be verified through sufficient experimentation. It is important to establish an effective and efficient flexural design method and to further promote the application and development of prestressed concrete box girders with corrugated steel webs in bridge engineering.
Flexural Behavior of Prestressed Concrete Box Girders with Corrugated Steel Webs: Review
Li, Hongjiang (author)
18th COTA International Conference of Transportation Professionals ; 2018 ; Beijing, China
CICTP 2018 ; 528-536
2018-07-02
Conference paper
Electronic Resource
English
Corrugated steel webs for prestressed concrete girders
| British Library Online Contents | 2003
Corrugated steel webs for prestressed concrete girders
| Online Contents | 2003
Corrugated steel webs for prestressed concrete girders
| Online Contents | 2003
Corrugated steel webs for prestressed concrete girders
| Springer Verlag | 2003
Shear Buckling Behavior of Prestressed Concrete Girders with Corrugated Steel Webs
| British Library Conference Proceedings | 2002