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Assessment of P-Y Approaches for Piles in Normally and Over-Consolidated Soft Clay

  • Martin Achmus
  • , Mauricio Terceros
  • , Klaus Thieken

Research output: Chapter in book/report/conference proceedingConference contributionResearchpeer review

Abstract

The load-bearing behavior of laterally loaded piles in soft clay is commonly determined by using the p-y method as recommended by the American Petroleum Institute (API). The recent application of these p-y curves for monopile foundations of offshore wind turbines necessitates their verification with regard to the large diameter and their response to small loads. Previous investigations from other researchers questioned the validity of the API approach for these conditions and recommend modified or completely new approaches. In this respect, the paper presents a comprehensive numerical study in order to assess a total of six static p-y approaches. It is concluded that none of the regarded approaches is generally valid for arbitrary soil conditions and pile dimensions. The findings from the investigation are finally used for the specification of requirements regarding a new, superior p-y approach.

Original languageEnglish
Title of host publicationProceedings of the 27th International Ocean and Polar Engineering Conference, ISOPE 2017
PublisherSociety of Petroleum Engineers (SPE)
ISBN (Electronic)9781880653975
Publication statusPublished - 25 Jun 2017
Event27th International Ocean and Polar Engineering Conference, ISOPE 2017 - San Francisco, United States
Duration: 25 Jun 201730 Jun 2017

Publication series

NameProceedings of the International Offshore and Polar Engineering Conference
ISSN (Print)1098-6189
ISSN (Electronic)1555-1792

Conference

Conference27th International Ocean and Polar Engineering Conference, ISOPE 2017
Country/TerritoryUnited States
CitySan Francisco
Period25 Jun 201730 Jun 2017

Keywords

  • Clay
  • Foundation stiffness
  • Monopile
  • Offshore wind turbine
  • P-y curve
  • Small strain stiffness

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering

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