CUED Publications database

Development of a servo-hydraulic earthquake actuator for the Cambridge Turner beam centrifuge

Madabhush, GSP and Haigh, SK and Houghton, NE and Gould, E (2012) Development of a servo-hydraulic earthquake actuator for the Cambridge Turner beam centrifuge. International Journal of Physical Modelling in Geotechnics, 12. pp. 77-88. ISSN 1346-213X

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Abstract

Dynamic centrifuge modelling has been carried out at Cambridge since the late 1970s. Over this period, three different mechanical earthquake actuators were developed. In this paper the development of a new servo-hydraulic earthquake actuator is described. The basic design principles are explained along with the need to carry out these designs to match the existing services and systems of the 35 year old Turner beam centrifuge at Cambridge. In addition, some of the features of the Turner beam centrifuge are exploited in the design of this new earthquake actuator. The paper also explains the mechanical fabrication of the actuator and the control systems that were developed in order to generate real earthquake motions. Finally, the performance of this new servo-hydraulic earthquake actuator is presented and assessed based on a wide range of earthquake input motions.

Item Type: Article
Uncontrolled Keywords: Centrifuge modelling Dynamics Earthquakes
Subjects: UNSPECIFIED
Divisions: Div D > Geotechnical and Environmental
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:03
Last Modified: 08 Dec 2014 02:39
DOI: 10.1680/ijpmg.11.00013