Shear Experiments of Prestressed Concrete Bridge Girders

Shear Experiments of Prestressed Concrete Bridge Girders

Lantsoght, E.O.L. (TU Delft Concrete Structures; Universidad San Francisco de Quito)
Zarate Garnica, G.I. (TU Delft Concrete Structures)
Zhang, F. (TU Delft Concrete Structures)
Park, Min-Kook (TU Delft Concrete Structures)
Yang, Y. (TU Delft Concrete Structures)
Sliedrecht, Henk (Ministry of Infrastructure and the Environment)

2021

For the assessment of existing slab-between-girder bridges, the shear capacity and failure mode are under discussion. Previous research showed that the static and fatigue punching capacity of the slabs is sufficient as a result of compressive membrane action. The girders then become the critical elements. This research studies the shear capacity of prestressed concrete bridge girders. For this purpose, four (half) girders were taken from an existing bridge that was scheduled for demolition and replacement and tested to failure in the laboratory. Two loading positions were studied. The results show that there should be a distinction between the mode of inclined cracking and the actual failure mode. In addition, the results show that for prestressed concrete girders, the influence of the shear span-depth ratio should be considered for shear span-depth ratios larger than 2.5. These insights can be used for the assessment of existing slab-between-girder bridges in the Netherlands.

bridge assessment
shear-tension
shear-compression
shear
prestressed concrete
large-scale testing
flexure-shear
concrete bridges

http://resolver.tudelft.nl/uuid:86ebdc20-1b35-4c10-88cd-8c708126fb51

0889-3241

ACI Structural Journal, 118 (3), 117-130

Institutional Repository

journal article

© 2021 E.O.L. Lantsoght, G.I. Zarate Garnica, F. Zhang, Min-Kook Park, Y. Yang, Henk Sliedrecht