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Modelling of clayey soil by using Finite Element Method (FEM) under Pressuremeter test

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Modelling of clayey soil by using Finite Element Method (FEM) under Pressuremeter test

Rechten: Alle rechten voorbehouden

Samenvatting

There are a lot of problems associated with clayey soil. More geotechnical pathologies appeared as more developed project brighten up. The geotechnical engineers encounter problems with modelling the stiff clayey soil behaviour especially while using the classical methods for obtaining the input parameters of Finite Element Methods for modelling the soil behaviour. Therefore, This research paper intended to design a systematic approach that allows estimating necessary parameters from in-situ test specifically the Pressuremeter test to model the clayey soil behaviour using Finite Element Methods. The method used to assure the feasibility of using the pressuremeter test to estimate the input parameters was by implementing both Pressuremeter test and classical laboratory test in the same location before simulating the Pressuremeter test using the input parameters obtained from the laboratory test to compare the soil response of the modelling and the real test. A three different modelling techniques namely MohrCoulomb, hardening Soil and Cam-Clay model were assessed based on relevant criteria to be chosen as a method of conducting the modelling and further comparing and interpreting the results in PLAXIS. The main findings are that the agreement between the actual soil response and the modelling response curves are founded only with increasing the cohesion to relatively high values. Besides, inverse correlation founded between the Ep and E50 displays illogical behaviour and therefore more samples required to be studied to find a significant relation. As it was agreed upon by the In-Company and In-school supervisors during the In-company meeting, this report doesn’t include any design or advance hand calculations in view of the fact that there was enough advanced modelling in PLAXIS, laboratory and site work together with the extra assignment represented in a pile foundation drawing to fulfill the professional competencies.

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OrganisatieHZ University of Applied Sciences
OpleidingCiviele Techniek
AfdelingDelta Academy
PartnersUniversidad de Cádiz, Cádiz, Spanje
Datum2018-07-03
TypeBachelorscriptie
TaalEngels

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