CUED Publications database

Centrifuge tests investigating inclined grout micro-piles as a method of liquefaction remediation for existing buildings

Mitrani, H and Madabhushi, SPG (2005) Centrifuge tests investigating inclined grout micro-piles as a method of liquefaction remediation for existing buildings. Geotechnical Special Publication. pp. 1093-1104. ISSN 0895-0563

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Abstract

This paper presents a series of centrifuge tests carried out to investigate the performance of non-structural inclined micro-piles as a potential liquefaction remediation method for existing buildings. Both a single-degree-of-freedom frame structure and a two-storey, two-degree-of-freedom frame structure were used as model buildings in these tests. Centrifuge tests were carried out with and without micro-piles in the foundation soil for each structure. Results primarily from the tests with the SDOF structure are presented in this paper. It is found that the micro-piles have some beneficial effect by increasing shear strains in the soil in their vicinity and hence causing dilation in these zones. However, they also increase structural accelerations by transmitting accelerations from deep in the soil and the beneficial effects from increased dilation are outweighed by the detrimental migration of pore pressures.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div D > Geotechnical and Environmental
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:07
Last Modified: 27 Nov 2014 19:22
DOI: