K. H. Andersen, O. E. Hansteen, K. Hoeg, J. H. Prevost

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


The objective of this contribution is to describe, interpret and analyze the effects of cyclic loading on the soil beneath offshore structures. In general, when a structure is placed on a soil foundation, there is an immediate settlement, followed by consolidation and secondary creep settlements. For an offshore structure there are in addition the cyclic motions and permanent deformations that occur in storm periods, and the consolidation settlements that occur during and subsequent to each storm in connection with the dissipation of the excess pore pressures that build up during the cyclic loading. The paper presents results from a comprehensive laboratory test program which studies the stress-strain and strength behavior of clay subjected to cyclic loads. Also given are mathematical descriptions of the observed behavior, and the development of numerical models suitable for computer applications; two different approaches are pursued: a simplified approach based directly on the test results and a mathematical model within the framework of the flow theory of plasticity.

Original languageEnglish (US)
JournalNor Geotek Inst Publ
Issue number120
StatePublished - 1978

All Science Journal Classification (ASJC) codes

  • Water Science and Technology
  • Geotechnical Engineering and Engineering Geology


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