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Punching behavior of a novel steel-UHPFRC composite bridge deck slab

Punching behavior of a novel steel-UHPFRC composite bridge deck slab
Autor(en): , , , ,
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Beitrag für IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022, veröffentlicht in , S. 396-403
DOI: 10.2749/nanjing.2022.0396
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A novel steel-UHPFRC composite deck system, consisting of upper thin reinforced UHPFRC slab, hot rolled sections as longitudinal ribs, and steel strips as transversal reinforcement, is proposed ori...
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Bibliografische Angaben

Autor(en): (College of Civil Engineering, Hunan University, Changsha 410082, China)
(College of Civil Engineering, Hunan University, Changsha 410082, China)
(College of Civil Engineering, Hunan University, Changsha 410082, China)
(College of Civil Engineering, Hunan University, Changsha 410082, China)
(College of Civil Engineering, Hunan University, Changsha 410082, China)
Medium: Tagungsbeitrag
Sprache(n): Englisch
Tagung: IABSE Congress: Bridges and Structures: Connection, Integration and Harmonisation, Nanjing, People's Republic of China, 21-23 September 2022
Veröffentlicht in:
Seite(n): 396-403 Anzahl der Seiten (im PDF): 8
Seite(n): 396-403
Anzahl der Seiten (im PDF): 8
DOI: 10.2749/nanjing.2022.0396
Abstrakt:

A novel steel-UHPFRC composite deck system, consisting of upper thin reinforced UHPFRC slab, hot rolled sections as longitudinal ribs, and steel strips as transversal reinforcement, is proposed originally in this paper. Considered as more economic and sustainable structure, the new composite deck is a promising alternative to traditional orthotropic steel deck (OSD) in long-span bridge. In this context, due to the relatively thin UHPFRC layer, the punching behavior of new composite deck becomes one of the dominant issues, which determines the spacing of steel trips. Hence, this paper presents the results of punching tests on 12 new composite deck slabs with various spacing of steel strips. All slabs failed in punching-flexure mode with a clearly delimited punching cone and significant flexural cracks on tensile surface. Moreover, the presence of steel strips can increase the punching shear resistance and flatten the inclination of critical shear cracks.
Stichwörter:
Verbundfahrbahnplatte UHPFRC
Copyright: © 2022 International Association for Bridge and Structural Engineering (IABSE)
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