01046020

Component

The curved steel I-girder bridge is one of the most popular bridge types throughout the world. Though there are many computer programs available for analyzing this type of structure, a simple method for a quick estimation of member forces during a preliminary or routine design is very useful. A proposed simplified method is presented based on the concept of live load distribution factors. First, some key parameters affecting live load distribution are identified. Then, some simplified formulas for predicting positive moment, negative moment, and shear force in curved steel I-girder bridges are developed. Comparisons show that the results from the proposed method are very close to the results from Finite Element Method (FEM) and are more accurate than the various available American Association of State Highway and Transportation Officials (AASHTO) Specifications formulas. The procedure developed in this study is applicable for the preliminary or routine design of horizontally curved steel I-girder bridges.

01042056

07-0281

English

17p

2007

Transportation Research Board 86th Annual Meeting

CD-ROM

Figures (5) ; References (17) ; Tables (5)

Bridge design; Bridge engineering; Bridge members; Bridges; Curved bridges; Finite element method; Girder bridges; Steel; Steel bridges; Steel structures

Curved girders; I-girders

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

Transportation Research Board Annual Meeting 2007 Paper #07-0281

TRIS, TRB

Feb 8 2007 4:50PM