DYNAMIC UPLIFT CAPACITY OF HELICAL ANCHORS IN SAND.

S. P. Clemence, A. P. Smithling

Research output: Chapter in Book/Report/Conference proceedingConference contribution

10 Scopus citations

Abstract

Earth anchors are becoming a very useful technique for securing temporary and permanent foundation systems subjected to uplift loads. Laboratory tests were performed with one-quarter scale single-helix model anchors in dry sand at a constant relative density and embedment depth. The two parameters investigated were the displacement amplitude and prestress load. It was concluded that the screw-in anchor installation technique and the application of a prestress load both produced an increase in horizontal soil stresses and soil densification in the vicinity of the single-helix anchor. In the prestress range investigated, a critical ratio of dynamic load to effective static capacity exists. Above this critical ratio, a failure of a prestressed anchor will occur earlier than a dead anchor failed by cyclic loading. Prestressed anchors below this critical ratio will experience an increase in anchor life.

Original languageEnglish (US)
Title of host publicationNational Conference Publication - Institution of Engineers, Australia
PublisherInst of Engineers
Pages88-93
Number of pages6
Edition84 /2
ISBN (Print)0858252082
StatePublished - Dec 1 1984

Publication series

NameNational Conference Publication - Institution of Engineers, Australia
Number84 /2
ISSN (Print)0313-6922

ASJC Scopus subject areas

  • Engineering(all)

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