IN SITU TESTING PROCEDURE FOR OBTAINING DYNAMIC AND CYCLIC SOIL PROPERTIES

Award Information
Agency:
National Science Foundation
Branch
n/a
Amount:
$190,000.00
Award Year:
1986
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Award Id:
1597
Agency Tracking Number:
1597
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
13926 Britoak, Houston, TX, 77079
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
Wanda K. Henke
President
() -
Business Contact:
WANDA K. HENKE
PRESIDENT
() -
Research Institute:
n/a
Abstract
WE ARE PROPOSING RESEARCH TO ADVANCE OUR ABILITY TO ECONOMICALLY INSURE THE EARTHQUAKE RESISTANCE OF SOIL-STRUCTURE-EQUIPMENT SYSTEMS. WE PROPOSE RESEARCH TOWARDS EVALUATING A NEW IN SITU GEOTECHNICAL TESTING CONCEPT (PATENT PENDING) FOR PROVIDING BETTER MEASURES OF LIQUEFACTION RESISTANCE, DEGRADATION CHARACTERISTICS, AND DYNAMIC SHEAR MODULUS. CURRENT PROCEDURES CAN CREATE CONSIDERABLE UNCERTAINTY AND POTENTIAL FOR ERROR, LEADING TO EITHER UNCONSERVATIVE OR COSTLY, EXCESSIVELY CONSERVATIVE DESIGNS. IN SITU TESTS DO NOT SIMULATE EARTHQUAKE-TYPE LOADING NOR READILY PROVIDE THE INFORMATION NEEDED BY EARTHQUAKE ANALYSES. LABORATORY TESTS ARE PLAGUED BY SAMPLE DISTURBANCE AND LOSS OF THE IN SITU STATE OF STRESS. OUR PROCEDURE WILL REDUCE UNCERTAINTY AND THE POTENTIAL FOR ERROR BY EFFECTIVELY, SCIENTIFICALLY, AND INNOVATIVELY COMBINING THE ATTRACTIVE FEATURES OF LABORATORY AND IN SITU TESTS CYCLIC LOADS WILL BE APPLIED, DISTURBANCES MINIMIZED, THE IN SITU STATE OF STRESS PRESERVED AND REQUIRED INFORMATION ACCURATELY INFERRED BY DESCRIPTIVE SOIL-PROBE INTERACTION ANALYSIS PHASE I RESEARCH WILL DETERMINE FEASIBILITY. WE WILL ESTABLISH THEORETICAL FEASIBILITY BY ANALYTICALLY PREDICTING THE BEHAVIOR OF THE TESTING SYSTEM TO BE SENSITIVE TO SELECTED SOIL PROPERTIES IN CLEAR, PHYSICALLY REASONABLE MANNERS. WE WILL ESTABLISH OPERATIONAL FEASIBILITY BY DEVELOPING A PRACTICAL CONCEPTUAL DESIGN OF A LABORATORY PROTOTYPE TESTING SYSTEM. PRELIMINARY STUDIES INDICATE THAT FEASIBILITY IS LIKELY.

* information listed above is at the time of submission.

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