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Sustainable Measures for Protection of Structures Against Earthquake Induced Liquefaction

Published version
Peer-reviewed

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Authors

Garcia-Torres, S 

Abstract

jats:titleAbstract</jats:title>jats:pSoil liquefaction can cause excessive damage to structures as witnessed in many recent earthquakes. The damage to small/medium-sized buildings can lead to excessive death toll and economic losses due to the sheer number of such buildings. Economic and sustainable methods to mitigate liquefaction damage to such buildings are therefore required. In this paper, the use of rubble brick as a material to construct earthquake drains is proposed. The efficacy of these drains to mitigate liquefaction effects was investigated, for the first time to include the effects of the foundations of a structure by using dynamic centrifuge testing. It will be shown that performance of the foundation in terms of its settlement was improved by the rubble brick drains by directly comparing them to the foundation on unimproved, liquefiable ground. The dynamic response in terms of horizontal accelerations and rotations will be compared. The dynamic centrifuge tests also yielded valuable information with regard to the excess pore pressure variation below the foundations both spatially and temporally. Differences of excess pore pressures between the improved and unimproved ground will be compared. Finally, a simplified 3D finite element analysis will be introduced that will be shown to satisfactorily capture the settlement characteristics of the foundation located on liquefiable soil with earthquake drains.</jats:p>

Description

Keywords

Drains, Earthquakes, Ground Improvement, Sustainability

Journal Title

Indian Geotechnical Journal

Conference Name

Journal ISSN

0971-9555
2277-3347

Volume Title

51

Publisher

Springer Science and Business Media LLC
Sponsorship
Peru’s national council of science, technology, and technological innovation (CONCYTEC) (PE) (CONCYTEC)