Model study on the failure mechanism of soil-nailed structure under surcharge loading

Dong Soo Kim, Ilan Juran, Robert Nasimov, Sergey Drabkin

Research output: Contribution to journalArticle

Abstract

To investigate the effects of surcharge loading on the failure mechanism of soil-nailed structures, reduced scale-model tests were performed. The main variables for this study were the bending stiffness and tension resistance of nails and applied surcharge loading levels. In addition, two different testing sequences were used to simulate, respectively, the application of soil nailing in both new construction and rehabilitation or widening of earth-retaining systems under surcharge loading. To effectively assess the loading effects on the failure mechanism, failure tests without surcharge loading were performed, and the results were used as reference data. When applying surcharge loading, the failure of the system occurred through a progressive breakage of the nails initiated at the top nails. Under low surcharge loading, the state of stress in the upper nails is close to the stress state for the unloaded wall. As the surcharge loading increases, the equivalent earth pressure coefficient in the upper nails tends to increase toward the at-rest value. The locus of nail breakage points under surcharge loading is fairly close to that obtained with flexible nails without surcharge loading regardless of bending stiffness and construction sequence.

Original languageEnglish (US)
Pages (from-to)421-430
Number of pages10
JournalGeotechnical Testing Journal
Volume18
Issue number4
StatePublished - Dec 1995

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Nails
failure mechanism
breakage
soil structure
stiffness
soil nailing
Soils
earth pressure
model test
Earth (planet)
Stiffness
effect
Patient rehabilitation
Testing
test
rehabilitation

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Geotechnical Engineering and Engineering Geology

Cite this

Model study on the failure mechanism of soil-nailed structure under surcharge loading. / Kim, Dong Soo; Juran, Ilan; Nasimov, Robert; Drabkin, Sergey.

In: Geotechnical Testing Journal, Vol. 18, No. 4, 12.1995, p. 421-430.

Research output: Contribution to journalArticle

Kim, Dong Soo ; Juran, Ilan ; Nasimov, Robert ; Drabkin, Sergey. / Model study on the failure mechanism of soil-nailed structure under surcharge loading. In: Geotechnical Testing Journal. 1995 ; Vol. 18, No. 4. pp. 421-430.
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