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Centrifuge tests on improving offshore foundation systems Henderikus G.B. Allersma
 

Summary: Centrifuge tests on improving offshore foundation systems
Henderikus G.B. Allersma
University of Delft, Deflt, the Netherlands
Published at: International Symposium on Frontiers in Offshore Geotechnics (ISFOG), 19-21 Sept., 2005, Perth
ABSTRACT: The centrifuge testing technique is a suitable method for investigating new ideas for construc-
tion methods in the geotechnical field. In particular the small geotechnical centrifuge of the University of
Delft has proven to be very convenient for this purpose. The small scale models can be modified quickly and
easily. The tests can be reproduced accurately, so that the effect of small changes in the design can be made
visible. Several test programs have been carried out in the centrifuge of the University of Delft to examine
methods of improving the loading capacity of offshore foundation elements. The paper focuses on improving
the loading capacity of circular footings and suction caissons. It was found that parameters, such as rough-
ness, have a significant influence. Some new ideas for suction caissons were tested. An unexpected observa-
tion was that the pullout capacity could be improved by removing a part of the caisson.
1 INTRODUCTION In order to improve the loading capacity of suc-
tion caissons, several centrifuge tests have been car-
ried out to simulate new design concepts. The small
centrifuge appeared to be very suitable for this task.
The small models lend themselves to easy modifica-
tion, and the accurate reproducibility of the tests en-
sures that the effects of slight differences in design

  

Source: Allersma, Henderikus G.B. - Geo-Engineering Section, Technische Universiteit Delft

 

Collections: Engineering