Small-strain stiffness and damping ratio of Pisa clay from surface wave tests

Clay enrichment ratio in sediment from a small agricultural watershed in iran

non-invasive continuous surface wave measurements for in situ damping ratio profiling of soils

local site conditions have a strong effect on ground response during earthquakes. two important soil parameters that control the amplification effects of seismic motions by a soil column are the soil hysteretic damping ratio and shear wave velocity. this paper presents the results of in situ damping ratio measurements performed using continuous surface wave attenuation data at a site in semnan ...

THE MODEL UPDATING OF MASS, DAMPING AND STIFFNESS MATRICES

The Validity Assessment of Laboratory Shear Modulus Using In-Situ Seismic Piezocone Test Results

Seismic piezocone device (SCPTu) together with Resonant Column and Cyclic Triaxial test apparatus are employed to measure small strain shear modulus (G0) of carbonate sandy and clayey soils of southern coasts of Iran. A large area of southern regions of Iran is formed from clay, silt and sand. In this study, maximum shear modulus that is derived from both field (by seismic piezocone) and labora...

Stiffness at small strain: research and practice

This paper provides the background to the 50th Rankine Lecture. It considers the growth in emphasis of the prediction of ground displacements during design in the past two decades of the 20th century, as a result of the lessons learnt from field observations. The historical development of the theory of elasticity is then described, as are the constitutive frameworks within which it has been pro...