In Situ Tests for Foundation Vibrationsby Richard D. Woods, Univ of Michigan, Ann Arbor, MI, USA,
Abstract: There are several well established methods of determining shear modulus in situ and these are summarized in this paper. New techniques are being developed for in situ determination of shear modulus and these are also discussed. Some foundation vibration problems result from the propagation of energy to a site from a source remote to that foundation. To properly evaluate this situation, the damping or attenuation characteristics of the ground must be known. Methods of measuring or estimating attenuation of vibrations are discussed. Recent developments in the understanding of the implications of the state of stress in soil on the elastic properties are presented as are the results of recent investigations into the influence of capillarity on elastic properties.
Subject Headings: Field tests | Foundations | Vibration | Shear modulus | Soil stress | Soil modulus | Material tests | North America | United States | Indiana
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