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An Experimental Investigation Into the Pull-Out Capacity of Suction Caissons in Sand

[+] Author Affiliations
Siamak Kakasoltani, Mostafa Zeinoddini, Mahmoud R. Abdi

K. N. Toosi University of Technology, Tehran, Iran

Hamid Arabzadeh

PNU University of Boushehr, Tehran, Iran

Paper No. OMAE2011-49038, pp. 21-27; 7 pages
  • ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 1: Offshore Technology; Polar and Arctic Sciences and Technology
  • Rotterdam, The Netherlands, June 19–24, 2011
  • ISBN: 978-0-7918-4433-5
  • Copyright © 2011 by ASME


The pull-out performance of conventional suction caissons (with upright walls) has been previously investigated by a number of researchers. However, less attention has been formerly paid to tapered suction caissons. This paper reports some results from an experimental investigation into the pull-out performance of tapered suction caissons. The 1g experiments have been carried out on eight small scale suction caissons. Four specimens have had upright walls while the other four had a positive wall slope of 10%. The caissons have been installed in a soil tank containing very fine saturated silty sand. The caissons have then been subjected to vertical pull-out loads with different speeds. The effects of variations in soil density and pull-out rate on the pull-out capacities have also been investigated. In general, tapered caissons have been noticed to present enhanced pull-out capacities as compared to those from their equivalent upright caissons. The enhancement rate has been found to be more significant in suction caissons with higher aspect ratios. With both upright and tapered caissons the pull-out capacity increases by an increase in the pull-out rate. The pull-out rate effects are more significant with upright caissons in comparison to the corresponding tapered caissons. The density effects, however, are more significant with tapered caissons as compared to their equivalent upright caissons.

Copyright © 2011 by ASME
Topics: Sands , Caissons , Suction



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