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Laboratory and Field Mechanical Waves Measurements to Evaluate Material Stiffness
The present work aims to establish a relationship between field and laboratory moduli obtained from mechanical wave measurements. In this scope, spectral analysis of surface waves (SASW) tests were performed on a clayey sand trial layer during running tests on a full-scale trial. Further, triaxial tests involving S-wave measurements with bender elements and accelerometers were conducted on specimens with similar state conditions, and laboratory shear modulus was determined. Both laboratory and field methodology for the determination of shear modulus was based on S-wave propagation through material, thus involving similar stress and strain levels. A clear match was observed between field and laboratory shear modulus. These results denotes a good relationship between field and laboratory modulus and assumes great importance taking into account that design is based on mechanical properties usually determined from laboratory tests.
Laboratory and Field Mechanical Waves Measurements to Evaluate Material Stiffness
The present work aims to establish a relationship between field and laboratory moduli obtained from mechanical wave measurements. In this scope, spectral analysis of surface waves (SASW) tests were performed on a clayey sand trial layer during running tests on a full-scale trial. Further, triaxial tests involving S-wave measurements with bender elements and accelerometers were conducted on specimens with similar state conditions, and laboratory shear modulus was determined. Both laboratory and field methodology for the determination of shear modulus was based on S-wave propagation through material, thus involving similar stress and strain levels. A clear match was observed between field and laboratory shear modulus. These results denotes a good relationship between field and laboratory modulus and assumes great importance taking into account that design is based on mechanical properties usually determined from laboratory tests.
Laboratory and Field Mechanical Waves Measurements to Evaluate Material Stiffness
Martins, J. (author) / Correia, A. Gomes (author)
Geo-Hubei 2014 International Conference on Sustainable Civil Infrastructure ; 2014 ; Yichang, Hubei, China
2014-06-23
Conference paper
Electronic Resource
English
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