00209551

Component

http://onlinepubs.trb.org...s/hrr/1971/354/354-001.pdf

THE RESULTS OF A LOADING HISTORY FIELD TEST ON A RURAL HIGHWAY BRIDGE IN MARYLAND ARE PRESENTED. TWO WAYS OF DATA REDUCTION ARE COMPARED: ONE TECHNIQUE NOTES ONLY ONE STRESS EVENT PER TRUCK PASSAGE, WHILE THE OTHER TECHNIQUES PRODUCES SEVERAL EVENTS FOR EACH VEHICLE. THE COMPOSITION AND WEIGHT OF THE TRUCK TRAFFIC ARE PRESENTED, ALONG WITH A NUMBER OF OCCURRENCES OF MULTIPLE CROSSING. SEVERAL METHODS OF ESTIMATING THE FATIGUE LIFE OF THE BRIDGE ARE ALSO ATTEMPTED. SOME CONCLUSIONS ARE THAT SIGNIFICANT DIFFERENCES IN THE SHAPE OF STRESS-RANGE HISTOGRAMS CAN RESULT, DEPENDING ON THE INCLUSION OR EXCLUSION OF THE SEVERAL SECONDARY STRESS RANGES, BUT THAT FOR STRESS RANGES ABOVE 3.0 KSI NO SIGNIFICANT DIFFERENCES IN THE HISTOGRAMS ARE FOUND. HIGHER AVERAGE STRESS RANGES WERE PRODUCED BY MULTIPLE CROSSINGS THAN BY SINGLE CROSSINGS. IT WAS ALSO CONCLUDED THAT THE MAIN LOAD-CARRYING MEMBERS OF THIS BRIDGE ARE NOT LIKELY TO SUFFER FROM TRAFFIC-INDUCED FATIGUE DISTRESS. /AUTHOR/

Sponsored by Committee on Dynamics and Field Testing of Bridges and presented at the 50th 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.

01410285

pp 1-12

1971

Highway Research Record

50th Annual Meeting of the Highway Research Board

0309019672

Print

Figures (1) ; References (6) ; Tables (3)

Axle load force; Bridges; Data reduction; Distress; Fatigue (Mechanics); Field tests; Histograms; Loads; Rural highways; Trucks; Weight

Fatigue life

Bridges and other structures; Highways; Motor Carriers

TRIS, TRB

Dec 13 1971 12:00AM

• COMPARISON OF SINGLE-AND MULTIPLE-UNDERREAMED BORED PILES BASED ON LABORATORY AND FIELD EXPERIMENTS
• CONTROL OF SINGLE-SPAN HIGHWAY BRIDGE VIBRATIONS
• DYNAMIC DETERMINATION OF PILE LOAD-BEARING CAPACITY
• DYNAMIC PROPERTIES OF SUSPENSION BRIDGES
• DYNAMIC STRESS STUDY OF COMPOSITE-SPAN BRIDGE WITH CONVENTIONAL AND ELASTOMERIC BEARINGS
• FIELD MEASUREMENTS ON INSTRUMENTED PILES UNDER AN OVERPASS ABUTMENT
• FLANGE PROPORTIONS FOR CURVED PLATE GIRDERS
• Static and Fatigue Strengths of Beams Containing Prestressed Concrete Tension Elements