OCR and POP Parameters in Plaxis-based Numerical Analysis of Loaded over Consolidated Soils

Melnikov, Roman; Zazulya, Juriy; Степанов, М. А.; Ashikhmin, Oleg; Maltseva, T. V.

doi:10.1016/j.proeng.2016.11.783

Cited by 11 publications

(9 citation statements)

References 7 publications

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“…Important characteristics of complex geological models, including the HS model, are the parameters of the natural state, which determine the results of the initial phase of modeling, on which all subsequent calculation results depend [9,10]. These parameters are based on the theory of soil overconsolidation, which can result from a wide range of natural factors.…”

Section: Parameters Of the Initial Stress State (Ocr And Pop)mentioning

confidence: 99%

Initial data for Hardening Soil model

Konyushkov

Penkov²,

Fedorenko³

2023

E3S Web Conf.

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Nowadays, civil engineering makes high demands on numeral modelling in geotechnical engineering, notably, to ensure reliability of a structure at minimum cost. Using of codes and standards supported with numerical calculations and soil constitutive models makes the design satisfying this requirement possible. But no matter how complex the model is its fidelity depends on input data. The article describes a method for determining the main characteristics of the Hardening Soil model (including calculating the power parameter m and reducing the deformation characteristics of the soil to the recommended value of the reference pressure). A comparison of two approaches was made: using a table of physical and mechanical characteristics; and the approach based on the analysis of the results of laboratory tests in accordance with the methodology given in the article and further verification of the obtained parameters. The result of the comparison was the complete inconsistency of the first approach for assigning the parameters of the nonlinear soil model and the need to refer to the test protocols was confirmed.

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Section: Parameters Of the Initial Stress State (Ocr And Pop)mentioning

confidence: 99%

Initial data for Hardening Soil model

Konyushkov

Penkov²,

Fedorenko³

2023

E3S Web Conf.

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“…To calculate foundation settlement, various mathematical models are used. Let us consider two key models: the linear elastic-perfectly plastic Mohr-Coulomb (MC) model [28,29] and the Hardening Soil (HS) model [30][31][32].…”

Section: Soil Model Selectionmentioning

confidence: 99%

“…To do this, it factors in three moduli: the modulus of deformation that takes into account stiffness under deviator stress E 50 , the modulus of unloading and reloading E ur , and the modulus that takes into account stiffness under compression E oed . Each of them depends on the value of confining pressure [30][31][32]:…”

Section: Soil Model Selectionmentioning

confidence: 99%

“…The key factor determining whether it is possible to use one model or another to solve problems of monitoring the state of permafrost soils is the possibility of finding the parameters of the model in the course of field measurements on site. The authors of [29,[32][33][34][35] analysed the methods used to find soil model parameters. Table 1 summarizes their results.…”

Section: Soil Model Selectionmentioning

confidence: 99%

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Assessing the State of Structural Foundations in Permafrost Regions by Means of Acoustic Testing

Syaskо

Shikhov

2022

Applied Sciences

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About 60% of the territory of the Russian Federation is covered by permafrost. Additionally, a large share of the country’s mineral and hydrocarbon deposits are located in the Arctic. Climate change that has been happening over the past few decades has had a serious impact on the conditions in which permafrost soils are found. Changes in temperatures in permafrost regions, along with the human impact from mining and processing, have led to an increase in accidents caused by the degradation of permafrost foundations. In this situation, timely detection of the degradation of permafrost foundations plays a pivotal role in ensuring the safe operation of buildings and structures. This article contains a theoretical review and describes the results of an experimental study of whether it is possible to use acoustic testing in solving problems associated with monitoring the state of permafrost foundations. In the course of the study, the relationships between the acoustic characteristics and the deformation and strength characteristics of permafrost soils were analysed. The results of the study made it possible to draw a preliminary conclusion that acoustic testing can be used to solve problems associated with condition monitoring of permafrost foundations.

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“…In the initial stages of operation load the soil behaves in accordance with the secondary loading module Е е in the active layer [5,13].…”

Section: Combined Strip Pile Foundationsmentioning

confidence: 99%

Generation of stress-strain state in combined strip pile foundation beds through pressing of soil

et al. 2017

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Abstract. When erecting high-rise buildings, weak underlying soils cause a number of problems in design and construction. In order to ensure the required non-exceedance of the ultimate limit settlements, the combined strip pile foundation has been developed allowing the soil bed to be prestressed. This is achieved by injection of pressurized mortar (pressing). The paper analyzes the effect of soil pre-stressing followed by pressing of foundation with the cement mortar, as applied to existing structures using the Plaxis 3D software package in conditions of volume deformation and the Hardening Soil Model. Variable order of foundation pressing allows the required parameters of soil bed to be achieved in plan and depth, thus improving interaction with the foundation and superstructure.

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OCR and POP Parameters in Plaxis-based Numerical Analysis of Loaded over Consolidated Soils

Cited by 11 publications

References 7 publications

Initial data for Hardening Soil model

Initial data for Hardening Soil model

Assessing the State of Structural Foundations in Permafrost Regions by Means of Acoustic Testing

Generation of stress-strain state in combined strip pile foundation beds through pressing of soil

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