01124963

Component

The AASHTO-LRFD Specification (1) currently contains a simple procedure for calculating shear and moment distribution factors. These distribution factors are based on a large study which encompassed many types of bridge systems. However, that study did not account for high performance steel (HPS) girder bridges, which are becoming common in new bridge construction in the United States. For this reason, it is important to validate the current AASHTO-LRFD distribution factor equations for HPS bridges. On three separate occasions, truckload tests were performed on an HPS bridge in central Ohio to obtain strain and displacement data. The data were subsequently filtered to remove electronic noise, and then moment distribution factors were calculated from the strain data. It was found that AASHTO-LRFD (1) provided conservative estimates of lateral load distribution for moment when compared to experimental results for an HPS bridge.

01120148

09-2957

English

13p

2009

Transportation Research Board 88th Annual Meeting

DVD

Figures; Photos; References (8) ; Tables (1)

Bridges; Experiments; High performance concrete; Load and resistance factor design; Load transfer; Shear strength; Steel structures; Structures

AASHTO LRFD Bridge Design Specifications

Bridges and other structures; Highways; I24: Design of Bridges and Retaining Walls

Transportation Research Board Annual Meeting 2009 Paper #09-2957

TRIS, TRB

Jan 30 2009 7:20PM