Title
Inclined Perimeter Drains Performance as Liquefaction Countermeasure Techniques below Existing Buildings
Date Issued
01 June 2020
Access level
metadata only access
Resource Type
journal article
Author(s)
Madabhushi G.S.P.
Universidad de Cambridge
Publisher(s)
World Scientific
Abstract
Reducing the risk of structural damage due to earthquake-induced liquefaction in new and existing buildings is a challenging problem in geotechnical engineering. Drainage countermeasure techniques against liquefaction have been studied over the last decades with an emphasis on the use of vertical drains. This technique aims to allow a rapid dissipation of excess pore pressures generated in the soil during the earthquake thereby limiting the peak excess pore pressures and consequently improve the structural response. Rapid drainage in the post-earthquake period in the presence of these drains helps quick recovery of the soil strength. Recent studies propose different variations in the vertical drains arrangement to improve the excess pore pressure redistribution in the soil around structures. However, conventional arrangements for existing buildings do not achieve an adequate proximity from the drains to the soil below the foundation. To address this, the performance of inclined and vertical perimeter drain arrangements are studied in this paper. Dynamic centrifuge tests were carried out for the different arrangements in order to evaluate the excess pore pressure generation due to ground shaking and the following dissipation together with the foundation settlement and dynamic response.
Volume
14
Issue
3
Language
English
OCDE Knowledge area
Geoquímica, Geofísica
Subjects
Scopus EID
2-s2.0-85081605485
Source
Journal of Earthquake and Tsunami
ISSN of the container
17934311
Sponsor(s)
The first author is supported by funding of the Peruvian Council of Science, Technology and Technological Innovation-CONCYTEC.
Sources of information:
Directorio de Producción Científica
Scopus