On the behavior of monopiles subjected to multiple episodes of cyclic loading and reconsolidation in cohesive soils
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F21%3A10433364" target="_blank" >RIV/00216208:11310/21:10433364 - isvavai.cz</a>
Výsledek na webu
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=wGOiTsO4la" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=wGOiTsO4la</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.compgeo.2021.104049" target="_blank" >10.1016/j.compgeo.2021.104049</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
On the behavior of monopiles subjected to multiple episodes of cyclic loading and reconsolidation in cohesive soils
Popis výsledku v původním jazyce
The study of cyclic loading on saturated natural clay deposits is of great interest for the analysis of offshore and onshore structures. Recent experimental research in the field of offshore engineering has indicated that the mechanical behavior of monopiles is strongly influenced by the reconsolidation processes that take place during calm conditions. After the reconsolidation episodes, the soil-pile stiffness considerably increases. Unfortunately, the previous behavior is usually disregarded in the numerical analysis and design of monopiles. In this work, the behavior of monopiles subjected to multiple episodes of cyclic loading and reconsolidation is analyzed from a numerical point of view. For that purpose, the sophisticated hypoplastic model for clays by Mašíin (2014) with intergranular strain by Niemunis and Herle (1997) is carefully evaluated under element test conditions and by back-calculating some centrifuge tests. For the calibration of the constitutive model, three undrained monotonic and three undrained cyclic triaxial tests were performed. At the end, the influence of reconsolidation stages on the design of monopiles and the model capabilities to reproduce this behavior are discussed.
Název v anglickém jazyce
On the behavior of monopiles subjected to multiple episodes of cyclic loading and reconsolidation in cohesive soils
Popis výsledku anglicky
The study of cyclic loading on saturated natural clay deposits is of great interest for the analysis of offshore and onshore structures. Recent experimental research in the field of offshore engineering has indicated that the mechanical behavior of monopiles is strongly influenced by the reconsolidation processes that take place during calm conditions. After the reconsolidation episodes, the soil-pile stiffness considerably increases. Unfortunately, the previous behavior is usually disregarded in the numerical analysis and design of monopiles. In this work, the behavior of monopiles subjected to multiple episodes of cyclic loading and reconsolidation is analyzed from a numerical point of view. For that purpose, the sophisticated hypoplastic model for clays by Mašíin (2014) with intergranular strain by Niemunis and Herle (1997) is carefully evaluated under element test conditions and by back-calculating some centrifuge tests. For the calibration of the constitutive model, three undrained monotonic and three undrained cyclic triaxial tests were performed. At the end, the influence of reconsolidation stages on the design of monopiles and the model capabilities to reproduce this behavior are discussed.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10505 - Geology
Návaznosti výsledku
Projekt
<a href="/cs/project/LTACH19028" target="_blank" >LTACH19028: Mechanismus porušení a snížení jeho rizika u základů větrných elektráren zatížených extrémními klimatickými podmínkami</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Computers and Geotechnics
ISSN
0266-352X
e-ISSN
—
Svazek periodika
134
Číslo periodika v rámci svazku
June
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
9
Strana od-do
104049
Kód UT WoS článku
000647563400002
EID výsledku v databázi Scopus
2-s2.0-85102075524