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Dynamic testing of free field response in stratified granular deposits

Dihoru, L, Bhattacharya, S, Moccia, F, Simonelli, AL, Taylor, CA and Mylonakis, G (2016) Dynamic testing of free field response in stratified granular deposits Soil Dynamics and Earthquake Engineering, 84. pp. 157-168.

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Abstract

The dynamic free field response of two stratified deposits with different stiffness ratios between the top and the bottom layer was analysed by shaking table testing. The granular deposits were contained in a laminar shear box and subjected to a wide set of dynamic inputs with different frequency content. Two exploratory modal testing techniques were employed to measure the natural frequency of the individual layers and the results were employed in the calculation of the fundamental period of the overall stratified profile by an extended variant of the Madera procedure [1]. The dynamic response was investigated in relation to the frequency content of the dynamic excitation, the granular material properties and the stiffness characteristics of the enclosing container. The measured dynamic stiffness for the mono-layered and the bi-layered sand deposits compare well with previous empirical curves for sands increasing the confidence in the shaking table and shear stack testing as tools of dynamic investigation of granular media.

Item Type: Article
Subjects : Environmental Engineering
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
AuthorsEmailORCID
Dihoru, LUNSPECIFIEDUNSPECIFIED
Bhattacharya, SUNSPECIFIEDUNSPECIFIED
Moccia, FUNSPECIFIEDUNSPECIFIED
Simonelli, ALUNSPECIFIEDUNSPECIFIED
Taylor, CAUNSPECIFIEDUNSPECIFIED
Mylonakis, GUNSPECIFIEDUNSPECIFIED
Date : 6 May 2016
Identification Number : 10.1016/j.soildyn.2016.02.014
Copyright Disclaimer : © 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Depositing User : Symplectic Elements
Date Deposited : 18 Jul 2016 14:32
Last Modified : 18 Jul 2016 14:32
URI: http://epubs.surrey.ac.uk/id/eprint/810714

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