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SIIA Público
SISTEMA INTEGRAL DE INFORMACIÓN ACADÉMICA - PÚBLICO
Título del libro: From Fundamentals To Applications In Geotechnics Título del capítulo: Comparison of laboratory and field techniques to measure shear wave velocity in Texcoco Lake Clay
Autores UNAM: EFRAIN OVANDO SHELLEY;
Autores externos: Idioma: Año de publicación: 2015Palabras clave:
Texcoco Lake clays; shear wave velocities; laboratory and field techniques
Resumen:
We analyse shear wave velocities obtained from field tests performed at
a site in the former Texcoco Lake, some 15 km north east of central
Mexico City. The objective of our study was to evaluate shear wave
velocity profiles obtained by combining the Microtremor Analysis Method
(MAM) and the Multichannel Analysis of Surface Waves (MASW). We compare
these profiles with those obtained using the suspension logging
technique and with a seismic Marchetti dilatometer. The results of
laboratory tests (resonant column and bender element tests) are also
brought into our discussion. Field and laboratory data show that the
shear wave velocity values obtained with the experimental techniques
presented here are scattered within a relatively narrow range. Regarding
the combined MAM-MASW method, our results show that this method reliably
provides shear wave velocity values that closely resemble those obtained
with the other methods down to about 40 m. The MAM-MASW is cheaper, it
is less time consuming and it requires a modest investment in equipment.
Nevertheless, a high degree of expertise is required to interpret and
analyse the time signals obtained here.
