Simplified Procedure for Prediction of Earthquake-Induced Settlements in Partially Saturated Soils
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VIEW THE REPLYPublication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 145, Issue 11
Abstract
Partially saturated soils associated with the presence of occluded air bubbles are commonly encountered in seismically active zones. Yet, there is a lack of deep understanding of the mechanisms of settlement that partially saturated soils suffer during seismic events. Consequently, a reliable seismic design approach for use in engineering practice is lacking. The aim of this paper is to show that seismically induced settlement of a level deposit of partially saturated soil can be estimated by summing the settlement related to excess pore pressure (EPP) generation/dissipation and increased soil mass compressibility in the presence of air bubbles, which are calculated separately. Predictions of the proposed effective stress-based methodology are found to be in good agreement with geotechnical centrifuge measurements. It is shown that the variation of degree of saturation is of significance. The proposed methodology utilizes the degree of saturation as a parameter and can satisfactorily predict the experimentally observed settlement.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are available from the corresponding author by request (Settlement_Prediction_Code). Some or all data, models, or code generated or used during the study are available in a repository or online in accordance with funder data retention policies (https://doi.org/10.7910/DVN/MUYXUS).
Acknowledgments
The centrifuge tests were conducted in the Schofield Centre of Cambridge University with the assistance of the technicians at the Schofield Centre and with the aid of funds provided by the Ministry of National Education in Turkey. Their support is gratefully acknowledged.
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Journal of Geotechnical and Geoenvironmental Engineering
Volume 145 • Issue 11 • November 2019
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©2019 American Society of Civil Engineers.
History
Received: Sep 9, 2018
Accepted: Jul 23, 2019
Published online: Sep 10, 2019
Published in print: Nov 1, 2019
Discussion open until: Feb 10, 2020
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