IMPACT FACTORS FOR CURVED HIGHWAY BRIDGES
A METHOD IS PRESENTED TO SOLVE THE PROBLEM OF DYNAMIC RESPONSE OF A SINGLE-SPAN, SIMPLY SUPPORTED, HORIZONTALLY CURVED HIGHWAY BRIDGES SUBJECTED TO MOVING LOADS. THE PROBLEM IS ANALYZED BY IDEALIZING THE BRIDGE TO BE A SINGLE CURVED BEAM OF EQUIVALENT RIGIDITY AND MASS AND THE MOVING LOADS TO BE EITHER A SINGLE CONSTANT FORCE OR TWO CONSTANT FORCES. THE RESULTS OF THIS ANALYSIS ARE UTILIZED TO DEVELOP IMPACT FACTORS FOR BOTH FLEXURAL AND TORSIONAL RESPONSE OF THE BRIDGE. THE IMPACT FACTOR DESIGN CURVES ARE PRESENTED FOR VARIOUS SPAN LENGTHS AND CENTRAL ANGLES. THESE CURVES REPRESENT THE RESPONSE OF THE BUREAU OF PUBLIC ROADS STANDARD BRIDGES OF THE I-BEAM NONCOMPOSITE AND WELDED GIRDER COMPOSITE TYPES WITH FOUR GIRDERS SUPPORTING THE CONCRETE SLAB. /AUTHOR/
- Record URL:
-
Supplemental Notes:
- Paper sponsored by Committee on Dynamics and Field Testing of Bridges and presented at the 49th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved.
-
Authors:
- Vashi, Kiran M
- SCHELLING, DAVID R
- Heins Jr, Conrad P
- Publication Date: 1970
Media Info
- Media Type: Print
- Features: Appendices; Figures; References; Tables;
- Pagination: pp 49-61
- Monograph Title: Bridges, foundations and retaining walls
-
Serial:
- Highway Research Record
- Issue Number: 302
- Publisher: Highway Research Board
Subject/Index Terms
- TRT Terms: Beams; Composite materials; Curvature; Curved beams; Design; Dynamic loads; Girder bridges; Highway bridges; I beams; Motion; Motor vehicles; Weldments
- Uncontrolled Terms: Composite beams; Design criteria; Dynamic response; Horizontal curvature; Impact factor; Moving vehicles
- Old TRIS Terms: Simple span
- Subject Areas: Bridges and other structures; Design; Highways;
Filing Info
- Accession Number: 00209244
- Record Type: Publication
- Files: TRIS, TRB
- Created Date: Aug 3 1970 12:00AM