Temat: cohesionless soil - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Analyses of soil-structure interaction based on vertical load tests of displacement piles
Autorzy:: Martinkus, V.
Norkus, A.
Powiązania:: https://bibliotekanauki.pl/articles/298227.pdf
Data publikacji:: 2015
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:: soil-structure interaction
displacement pile group
frame
suport
cohesionless soil
Opis:: The current paper presents a research based on experimental and numerical analysis of three different frame supported by displacement pile groups embedded in sand. The vertical load tests performed under lab conditions have shown different responses of single piles installed at the same pile group, and a densification effect was named as a key player taking the main roll in explaining this phenomenon. A numerical analysis based on experimental data revealed unfavourable changes on deformation and internal forces of three different frame types caused by densification phenomenon. Performed research has emphasised the significance of soil structure interaction analysis, especially when displacement pile groups embedded in sands are used.
Źródło:: Technical Sciences / University of Warmia and Mazury in Olsztyn; 2015, 18(4); 261-270
1505-4675
2083-4527
Pojawia się w:: Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Evaluation of sand p–y curves by predicting both monopile lateral response and OWT natural frequency
Autorzy:: Amel, Douifi
Djillali, Amar Bouzid
Subhamoy, Bhattacharya
Nasreddine, Amoura
Powiązania:: https://bibliotekanauki.pl/articles/2073761.pdf
Data publikacji:: 2022
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: FE analysis
p–y curve
Winkler model
cohesionless soil
monopile
offshore wind turbine
natural frequency
soil–monopile stiffness
Opis:: Extending the use of the p–y curves included in the regulation codes API and DNV to design large-diameter monopiles supporting offshore wind turbines (OWTs) was unsuccessful as it resulted in an inaccurate estimation of the monopile behavior. This had prompted many investigators to propose formulations to enhance the performances of Winkler model. In this paper, two case studies are considered. A case consisting of an OWT at Horns Rev (Denmark) supported by a monopile in a sandy soil was studied first. Taking the FEA using ABAQUS as reference, results of WILDOWER 1.0 (a Winkler computer code) using the recently proposed p–y curves giving design parameters were plotted and evaluated. In order to see the ability of proposed p–y curves to predict the monopile head movements, and consequently the first natural frequency (1st NF), a second case study consisting of a monopile supporting an OWT at North Hoyle (UK) was selected. The monopile head stiffness in terms of lateral, rocking, and cross-coupling stiffness coefficients, necessary for the 1st NF, were computed using both ABAQUS and WILDPOWER 1.0. Comparisons with the measured 1st NF showed that with the exception of one p–y model, none of other proposed Winkler methods is able to predict accurately this parameter.
Źródło:: Studia Geotechnica et Mechanica; 2022, 44, 1; 66--81
0137-6365
2083-831X
Pojawia się w:: Studia Geotechnica et Mechanica
Dostawca treści:: Biblioteka Nauki

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