MEASURING LIVE LOAD STRESSES ON BRIDGES

Award Information
Agency:
Department of Transportation
Branch
n/a
Amount:
$284,189.00
Award Year:
1989
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
9300
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Science & Engineering Associat
Po Box 3722, Albuquerque, NM, 87110
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
William S Riippi Sr
() -
Business Contact:
() -
Research Institution:
n/a
Abstract
THE DEPARTMENT OF TRANSPORTATION (DOT) IS REQUIRED TO MAIN- TAIN THE NATION'S BRIDGES AND ENSURE THEIR SAFETY. HOWEVER,A LARGE NUMBER OF BRIDGES HAVE NOT BEEN RECENTLY INSPECTED TO DETERMINE IF THEY ARE CAPABLE OF SAFELY SUPPORTING THE TRAFFIC THAT IS CROSSING THEM. THE CURRENT METHOD OF SURVEYING BRIDGES, TO DETERMINE THEIR STRESS CONDITION, IS COSTLY AND TIME-CONSUMING. THIS PROGRAM WILL DEVELOP, FABRICATE, AND TEST A PROTOTYPE INSTRUMENT THAT WILL QUICKLY AND ACCU- RATELY DETERMINE THE STRESS LEVELS IN STEEL BRIDGES. THE PROPOSED CONCEPT INCLUDES A ONE-PIECE STRAIN GAGE INSTRUMENTTHAT WILL BE EASILY INSTALLED AND REMOVED, USING A MECHAN- ICAL ATTACHMENT, FROM A STRUCTURAL BRIDGE MEMBER. THE THE INSTRUMENT WILL PROVIDE THE PEAK LIVE LOAD STRESSES DIRECTLY ON LIQUID CRYSTAL DISPLAYS. USE OF THIS INSTRUMENTWILL SIGNIFICANTLY REDUCE INSPECTION TIME AND ALLOW THE DOT TO MORE EFFICIENTLY INSPECT BRIDGES.

* information listed above is at the time of submission.

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