SANISAND-CH: A high-pressure bounding surface model for cemented sand, including methane hydrate-bearing sediments

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F25%3A00618131" target="_blank" >RIV/61388998:_____/25:00618131 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0266352X2400925X" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0266352X2400925X</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.compgeo.2024.106986" target="_blank" >10.1016/j.compgeo.2024.106986</a>

Jazyk výsledku

angličtina

Název v původním jazyce

SANISAND-CH: A high-pressure bounding surface model for cemented sand, including methane hydrate-bearing sediments

Popis výsledku v původním jazyce

This paper introduces a new constitutive model capable of predicting both the shear and compressive stress response of common cemented sand and methane hydrate-bearing sediments (MHBS) under high pressures. This model extends the SANISAND-H model, which is designed for the high-pressure response of clean sand, and incorporates specific constitutive elements from the SANISAND-C model, tailored for cemented sand under normal stress levels. It refines the narrow, closed conical yield surface of the SANISAND-H model by incorporating a bonding strength variable that diminishes with plastic strains. Furthermore, it modifies the critical state lines, reference compression curve, elastic parameters, state parameter, flow rule, and hardening law of SANISAND-H model to account for the cementing and densifying effects of cementitious materials. To capture the effects of temperature, pore pressure, and salinity on the behavior of MHBS, the model includes a condition parameter, influencing the critical state and bonding strength. Validation through laboratory tests confirms the model’s accuracy in simulating the enhanced shear strength, dilatancy, and softening behavior, as well as the reduced compressibility of cemented sand. Moreover, it accurately captures the mechanical responses induced by particle crushing under high pressures.

Název v anglickém jazyce

SANISAND-CH: A high-pressure bounding surface model for cemented sand, including methane hydrate-bearing sediments

Popis výsledku anglicky

This paper introduces a new constitutive model capable of predicting both the shear and compressive stress response of common cemented sand and methane hydrate-bearing sediments (MHBS) under high pressures. This model extends the SANISAND-H model, which is designed for the high-pressure response of clean sand, and incorporates specific constitutive elements from the SANISAND-C model, tailored for cemented sand under normal stress levels. It refines the narrow, closed conical yield surface of the SANISAND-H model by incorporating a bonding strength variable that diminishes with plastic strains. Furthermore, it modifies the critical state lines, reference compression curve, elastic parameters, state parameter, flow rule, and hardening law of SANISAND-H model to account for the cementing and densifying effects of cementitious materials. To capture the effects of temperature, pore pressure, and salinity on the behavior of MHBS, the model includes a condition parameter, influencing the critical state and bonding strength. Validation through laboratory tests confirms the model’s accuracy in simulating the enhanced shear strength, dilatancy, and softening behavior, as well as the reduced compressibility of cemented sand. Moreover, it accurately captures the mechanical responses induced by particle crushing under high pressures.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/GA23-05338S" target="_blank" >GA23-05338S: Mechanické a strukturní vlastnosti 3D tištěné slitiny AlSi10Mg v závislosti na míře recyklace prášku</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

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

179

Číslo periodika v rámci svazku

March

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

22

Strana od-do

106986

Kód UT WoS článku

001401450600001

EID výsledku v databázi Scopus

2-s2.0-85213071718