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To address the lack of test data and general uncertainty in analyzing deteriorated concrete structures, a series of load tests was conducted to determine the load distribution of a deteriorated adjacent
rete box beam bridges. These systems were first built in Pennsylvania in the 1950s and continue to be a common and cost-effectiv. form of construction. According to the PennDOT Bridge Preservation
This paper discusses a series of load tests that were performed on an existing adjacent box-beam structure with leaking joints to determine the load distribution for a deteriorated adjacent concrete
In this paper, an analytical algorithm based on the transfer matrix method is developed to calculate the lateral load distribution of skewed adjacent box beam bridges.
For a cast-in-place prestressed (CIP/PS) concrete box girder superstructure, a beam element located at the center of gravity of the box girder can be used. For non-box girder structures, a detailed model
The distribution factor for one design lane loaded is based on the lever rule, which includes a 0.5 factor for converting the truck load to wheel loads and a 1.2 factor for multiple truck presence.
Due to the buoyancy of the voids, adjacent box or voided beam bridges shall not be used where the structure will be submerged. Spread beam bridges may be used with the approval of the
The following tables provide information to be used in developing Box Beam bridge plans. DC and DW loads are provided to aid in determining the bearing load of each beam.
The fatigue distribution factors are calculated in the following sections to provide the user with a complete reference for the application of the LRFD distribution factors.
Since the exterior beam can be of a different width than the interior beam, the Live Load Distribution Factors need to be calculated for an interior beam that has the same width as the exterior beam.
The document summarizes key concepts regarding load paths and load distribution in bridge superstructures. It describes various types of bridge decks including
• Three exposed strands at L/8 from support Specimen 409‐2‐UD • No damage TIPPECANOE COUNTY BRIDGE 115
Concrete Deck Slabs on I-Girders, U-Beams, Spread Box Beams, Spread Slab Beams, Steel Plate Girders, and Steel Tub Girders. 3. Concrete Deck Slabs on Adjacent-Framed Beams (Slab Beams