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Trial Design of a New Type of Large-Span Double-Limb Prestressed Concrete Box Girder Bridge with Corrugated Steel Webs

 Trial Design of a New Type of Large-Span Double-Limb Prestressed Concrete Box Girder Bridge with Corrugated Steel Webs
Author(s): , , ,
Presented at IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022, published in , pp. 165-172
DOI: 10.2749/nanjing.2022.0165
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Owing to the buckling problem of corrugated steel webs, up to now the span of prestressed concrete box girder bridges with corrugated steel webs has not exceeded 200m . Based on the analysis of buc...
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Bibliographic Details

Author(s): (Tongji University, Shanghai, China)
(Tongji University, Shanghai, China)
(Fuzhou University, Fuzhou, China)
(Fuzhou University, Fuzhou, China)
Medium: conference paper
Language(s): English
Conference: IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022
Published in:
Page(s): 165-172 Total no. of pages: 8
Page(s): 165-172
Total no. of pages: 8
DOI: 10.2749/nanjing.2022.0165
Abstract:

Owing to the buckling problem of corrugated steel webs, up to now the span of prestressed concrete box girder bridges with corrugated steel webs has not exceeded 200m . Based on the analysis of buckling strength of corrugated steel webs, a new type of large span prestressed concrete box girder bridge with double-limb corrugated steel webs is proposed in this paper. It reduces the free height of the corrugated steel webs by filling core concrete between the double-limbed corrugated steel webs, and increases buckling strength of the webs. Additionally, the optimization technique of strong top plate and thin bottom plate is applied to reduce the self-weight of constant load without reducing the cross-sectional stiffness. The result of the trial design shows that this bridge type is applicable and economical, which can achieve a breakthrough in the span of prestressed concrete box girder bridges with corrugated steel webs.

Keywords:
buckling strength girder bridge corrugated steel web double-limb Core Concrete Thin bottom plate
Copyright: © 2022 International Association for Bridge and Structural Engineering (IABSE)
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