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Research on the Layout of Temporary Piers of Large-span and Super- Width Steel Box Girder during Incremental Launching Construction

 Research on the Layout of Temporary Piers of Large-span and Super- Width Steel Box Girder during Incremental Launching Construction
Auteur(s): , ,
Présenté pendant IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022, publié dans , pp. 1449-1456
DOI: 10.2749/nanjing.2022.1449
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It is difficult to understand the mechanical performance of large-span and super-width steel box girder during the incremental launching construction, and it varies with the number of temporary pie...
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Détails bibliographiques

Auteur(s): (Tongji University, Shanghai, China)
(Tongji University,Shanghai, China)
(CCCC Quanzhou Expressway Co., Ltd., Quanzhou, China)
Médium: papier de conférence
Langue(s): anglais
Conférence: IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022
Publié dans:
Page(s): 1449-1456 Nombre total de pages (du PDF): 8
Page(s): 1449-1456
Nombre total de pages (du PDF): 8
DOI: 10.2749/nanjing.2022.1449
Abstrait:

It is difficult to understand the mechanical performance of large-span and super-width steel box girder during the incremental launching construction, and it varies with the number of temporary piers. Combined with the engineering example of Qilu Yellow River Bridge in Jinan, this paper conducts research on the layout of temporary piers. Firstly, stress envelope of main girder and maximum support reaction forces under different layout schemes are analyzed with the frame model. Then, the local plate-shell model is used to obtain stress distribution of main plates and local stability of main girder segment under the most unfavorable loading conditions. The results show that local mechanical performance of steel box girder plays a crucial role in ensuring its safety during the incremental launching construction. Besides, rational spacing between temporary piers is 70m for Qilu Yellow River Bridge.

Copyright: © 2022 International Association for Bridge and Structural Engineering (IABSE)
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