Throughout the United States accelerated bridge construction is becoming increasingly
popular to meet growing transportation demands while keeping construction time and
costs to a minimum. This research focuses on eliminating the need to form full-depth
concrete bridge deck overhangs, accelerating the construction of concrete bridge decks,
by using full-depth precast prestressed concrete deck panels. Full-depth precast overhang
panels in combination with cast-in-place (CIP) reinforced concrete are experimentally
and analytically investigated to assess the structural performance. Experimental loaddeformation
behavior for factored AASHTO LRFD design load limits is examined
followed by the collapse capacity of the panel-to-panel seam that exists in the system.
Adequate strength and stiffness of the proposed full-depth panels deem the design safe
for implementation for the Rock Creek Bridge in Fort Worth, Texas. New failure
theories are derived for interior and exterior bridge deck spans as present code-based
predictions provide poor estimates of the ultimate capacity. A compound shear-flexure
failure occurs at interior bays between the CIP topping and stay-in-place (SIP) panel.
Overhang failure loads are characterized as a mixed failure of flexure on the loaded
panel and shear at the panel-to-panel seam. Based on these results design
recommendations are presented to optimize the reinforcing steel layout used in concrete
bridge decks.
| Identifer | oai:union.ndltd.org:tamu.edu/oai:repository.tamu.edu:1969.1/ETD-TAMU-2009-08-7019 |
| Date | 2009 August 1900 |
| Creators | Mander, Thomas |
| Contributors | Hite Head, Monique |
| Source Sets | Texas A and M University |
| Language | en_US |
| Detected Language | English |
| Type | Book, Thesis, Electronic Thesis, text |
| Format | application/pdf |
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