Aspects of soft clay behaviour important for correct prediction of spudcan foundation penetration

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F22%3A10438910" target="_blank" >RIV/00216208:11310/22:10438910 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21220/22:00355959

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Sh9CP9u0au" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Sh9CP9u0au</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.compgeo.2021.104552" target="_blank" >10.1016/j.compgeo.2021.104552</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Aspects of soft clay behaviour important for correct prediction of spudcan foundation penetration

Popis výsledku v původním jazyce

An advanced hypoplastic constitutive model for soft clay has been developed with the following features: preyield non-linearity, strength anisotropy (different critical state friction angles in compression and in extension), stress- and OCR-dependency of undrained shear strength and soil structure and its degradation during loading. The model features are explored here through simulation of spudcan foundation penetration into a carbonate silty clay that was obtained from the Timor Sea. As different parameters control individual features of the model, model properties that are relevant to spudcan bearing pressure predictions can be separated from the properties that do not affect the results substantially. As expected, it is confirmed that pre-yield non-linearity is among the properties not important for the predictions. On the contrary, strength anisotropy, stress- and OCRdependency of undrained shear strength and structure degradation are shown to be important aspects to be considered, indicating limitations of the use of simple elasto-plastic models for spudcan bearing pressure predictions. The conclusions can be adopted in the definition of a suitable experimental programme targeting the features of soil behaviour relevant to this geotechnical problem.

Název v anglickém jazyce

Aspects of soft clay behaviour important for correct prediction of spudcan foundation penetration

Popis výsledku anglicky

An advanced hypoplastic constitutive model for soft clay has been developed with the following features: preyield non-linearity, strength anisotropy (different critical state friction angles in compression and in extension), stress- and OCR-dependency of undrained shear strength and soil structure and its degradation during loading. The model features are explored here through simulation of spudcan foundation penetration into a carbonate silty clay that was obtained from the Timor Sea. As different parameters control individual features of the model, model properties that are relevant to spudcan bearing pressure predictions can be separated from the properties that do not affect the results substantially. As expected, it is confirmed that pre-yield non-linearity is among the properties not important for the predictions. On the contrary, strength anisotropy, stress- and OCRdependency of undrained shear strength and structure degradation are shown to be important aspects to be considered, indicating limitations of the use of simple elasto-plastic models for spudcan bearing pressure predictions. The conclusions can be adopted in the definition of a suitable experimental programme targeting the features of soil behaviour relevant to this geotechnical problem.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10505 - Geology

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>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Computers and Geotechnics

ISSN

0266-352X

e-ISSN

1873-7633

Svazek periodika

142

Číslo periodika v rámci svazku

February

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

12

Strana od-do

104552

Kód UT WoS článku

000740751000004

EID výsledku v databázi Scopus

2-s2.0-85120492294