Title:
Behavior of Externally Restrained Noncomposite Concrete Bridge Deck Panels
Author(s):
Rahman Edalatmanesh and John P. Newhook
Publication:
Structural Journal
Volume:
109
Issue:
2
Appears on pages(s):
161-170
Keywords:
arching; bridges; deck slabs; precast; punching; shear; testing
DOI:
10.14359/51683627
Date:
3/1/2012
Abstract:
Externally restrained concrete bridge deck slabs, sometimes referred to as steel-free bridge decks, have been employed in at least 12 highway bridges in North America. These decks are normally made composite with the supporting bridge girders to promote arching behavior. This paper describes research conducted to develop a precast noncomposite panel, which behaved in a similar manner as the composite externally restrained system. Five full-size deck slab panels were constructed and tested under concentrated static loading conditions. Various parameters, including strap strain, deck deflection, and crack width, were monitored during testing. The results show that proper confinement of the deck panels resulted in the desired punching shear behavior and compared favorably with theoretical models. These panels can be used for rapid construction of field structures but also create economic full-scale laboratory specimens for further research on externally restrained deck systems.