Eng-CE- Al-Shamrani, M. 8
Title
Applicability of the rectangular hyperbolic method
to settlement predictions of sabkha soils
Author-s
Contact lnfo
Al-Shamrani, M.A.
Prof. Mosleh A. Al-Shamrani
Geotechnical Engineering
College of Engineering
Dept. of Civil Engineering
Office: 2A54
shamrani@ksu.edu.sa
P.O. Box 800
Riyadh
Saudi Arabia
Department
Major
citation
Civil Engineering Department
Soil -structure interactions, Computational geomechanics
Year of
Publication
Publisher
Sponsor
Type of
Publication
ISSN
2004
Geotechnical and Geological Engineering
Volume 22, Issue 4, 2004, Pages 563-587
Journal
09603182
URI/DOI
Full Text
(Yes,No)
Key words
Yes
Compaction; Data reduction; Embankments; Engineering geology; Geotechnical
engineering; Slope stability
Abstract
In this paper, the applicability of the hyperbolic method to predict settlements of sabkha
formations was investigated. Conventional and long-term consolidation tests were
conducted, and the fit of the experimental data to a rectangular hyperbolic relationship was
examined. The validity of the hyperbolic form as a representation of the settlement-time
response of sabkha soils was further ascertained by analysing settlement records
measured under an instrumented test embankment. The laboratory results indicated that
the settlement-time behaviour could reasonably be represented by the hyperbolic
relationship. Settlement estimates determined as the inverse of the slope of the initial linear
segment multiplied by the slope of the theoretical curve, or obtained based on the radial
slopes corresponding to 50% and 90% consolidation points, all underestimated the
observed total settlements. However, the inverse of the slope of the final linear segment of
the hyperbolic curve gave excellent estimates of the observed total settlements. The
agreements between the predicted and observed in situ ultimate primary consolidation
settlements are considered reasonable. Finally, except when the hyperbolic plot follows a
straight line, the use of the hyperbolic method for prediction of total settlements of sabkha
soils with prominent secondary compression behaviour has been shown to be both
uncertain and impractical. © Kluwer Academic Publishers.