Details
| Original language | English |
|---|---|
| Title of host publication | Offshore Site Investigation Geotechnics |
| Subtitle of host publication | 8th International Conference Proceeding |
| Pages | 724-731 |
| Number of pages | 8 |
| Volume | 2 |
| Publication status | Published - 1 Jan 2017 |
| Event | Offshore Site Investigation and Geotechnics 2017 - London, United Kingdom (UK) Duration: 12 Sept 2017 → 14 Sept 2017 Conference number: 8 |
Abstract
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Offshore Site Investigation Geotechnics: 8th International Conference Proceeding. Vol. 2 2017. p. 724-731.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Evaluation of p-y Approaches for Piles in Soft Clay
AU - Terceros Almanza, Mauricio Marcelo
AU - Achmus, Martin
AU - Thieken, Klaus
N1 - Conference code: 8
PY - 2017/1/1
Y1 - 2017/1/1
N2 - When it comes to the general design of monopile foundations for offshore wind turbines (OWT), the p-y approach according to the offshore guidelines is commonly used. The here stated p-y curves for soft clay are based on a parabolic approach by Matlock, whereby different linearisations of the p-y curve are recommended by the guidelines of the American Petroleum Institute and the DNVGL. Referring to the basic p-y formulation according to Matlock, various experimental and numerical investigations had already shown considerable inadequacies in particular with respect to the suitability for large-diameter piles. Appropriate modifications to account for the pile diameter effect were for instance developed by Stevens & Audibert. The paper presents a comparative numerical study regarding the suitability of the original p-y curve by Matlock, the linearized Matlock curve by the DNVGL and modified Matlock curve by Stevens & Audibert for piles of varied dimensions in typical North and Baltic Sea clay conditions. It is concluded that none of the regarded approaches is generally valid for arbitraiy clay conditions and pile dimensions. The findings from the investigation are finally used for the specification of requirements regarding a new, superior p-y approach.
AB - When it comes to the general design of monopile foundations for offshore wind turbines (OWT), the p-y approach according to the offshore guidelines is commonly used. The here stated p-y curves for soft clay are based on a parabolic approach by Matlock, whereby different linearisations of the p-y curve are recommended by the guidelines of the American Petroleum Institute and the DNVGL. Referring to the basic p-y formulation according to Matlock, various experimental and numerical investigations had already shown considerable inadequacies in particular with respect to the suitability for large-diameter piles. Appropriate modifications to account for the pile diameter effect were for instance developed by Stevens & Audibert. The paper presents a comparative numerical study regarding the suitability of the original p-y curve by Matlock, the linearized Matlock curve by the DNVGL and modified Matlock curve by Stevens & Audibert for piles of varied dimensions in typical North and Baltic Sea clay conditions. It is concluded that none of the regarded approaches is generally valid for arbitraiy clay conditions and pile dimensions. The findings from the investigation are finally used for the specification of requirements regarding a new, superior p-y approach.
U2 - 10.3723/OSIG17.724
DO - 10.3723/OSIG17.724
M3 - Conference contribution
SN - 9780906940587
VL - 2
SP - 724
EP - 731
BT - Offshore Site Investigation Geotechnics
T2 - Offshore Site Investigation and Geotechnics 2017
Y2 - 12 September 2017 through 14 September 2017
ER -