INVESTIGATION OF A FULL-SIZE CONTINUOUS CONCRETE HIGHWAY BRIDGE PART II
THE REPORT DESCRIBES AND PRESENTS THE RESULTS OF A MOVING LOAD TEST ON A FULL-SIZED /BUT ONLY HALF CROSS-SECTION/ THREE-SPAN CONTINUOUS REINFORCED CONCRETE HIGHWAY BRIDGE. THE BRIDGE WAS LOADED WITH A SIMULATED H20-S16 DESIGN TRUCK AT SPEEDS RANGING FROM CRAWL TO 20 MPH. ONLY THE CRAWL SPEED RESULTS ARE REPORTED IN THIS REPORT. REINFORCING BAR STRAINS AT 41 POINTS, REACTIONS UNDER FOUR SUPPORTS, AND DEFLECTIONS AT MIDSPAN OF ALL THREE SPANS WERE MEASURED AND RECORDED ON OSCILLOGRAPH TRACES. SOME CONCLUSIONS OF THE STUDY WERE' /1/ ELASTIC ANALYSIS BASED UPON THE ASSUMPTION THAT CONCRETE HAS NO TENSILE STRENGTH IS HIGHLY CONSERVATIVE WITHIN THE RANGE OF LOADS APPLIED. /2/ FOR TRANSIENT LOADS, TENSION OF THE CONCRETE CONTRIBUTES SIGNIFICANTLY TO THE FLEXURAL STRENGTH OF THE BRIDGE. /3/ LIVE-LOAD DEFLECTIONS CAN BE PREDICTED WITH FAIR ACCURACY BY CLASSIC THEORY AND THE SIMPLIFYING ASSUMPTION THAT THE GROSS CONCRETE SECTION ALONE IS RESPONSIBLE FOR THE STIFFNESS OF THE STRUCTURE. /BPR/
-
Supplemental Notes:
- Hpr-1/1/, 930-017
-
Corporate Authors:
Auburn University
Auburn, AL United States 36830Alabama State Highway Department
11 South Union Street
Montgomery, AL United States 36130 -
Authors:
- Hudson, F M
- Publication Date: 1966-7
Subject/Index Terms
- TRT Terms: Bars (Building materials); Bridge superstructures; Continuously reinforced concrete pavements; Deflection tests; Elastic analysis; Highway bridges; Load tests; Material reinforcement; Motion; Moving industry; Oscillographs; Recording; Reinforced concrete bridges; Strain measurement; Structural analysis
- Uncontrolled Terms: Bridge spans
- Old TRIS Terms: Continuous reinforcement; Elastic analysis (Structural)
- Subject Areas: Bridges and other structures; Freight Transportation; Highways;
Filing Info
- Accession Number: 00207830
- Record Type: Publication
- Source Agency: Bureau of Public Roads /US
- Files: TRIS, STATEDOT
- Created Date: May 18 1994 12:00AM