Open AccessASSESSMENT OF SHEAR STRENGTH PARAMETERS OF SOIL FROM LOAD MICROPILE TESTS
Author(s) -
Karel Vojtasík
Publication year - 2022
Publication title -
acta polytechnica ctu proceedings
Language(s) - English
Resource type - Journals
ISSN - 2336-5382
DOI - 10.14311/app.2022.32.0042
Subject(s) - cohesion (chemistry) , geotechnical engineering , internal friction , friction angle , mohr–coulomb theory , bearing capacity , shear (geology) , load bearing , structural engineering , shear strength (soil) , traction (geology) , direct shear test , geology , engineering , soil water , materials science , soil science , mechanical engineering , composite material , physics , petrology , finite element method , quantum mechanics
Design and evaluation of the bearing capacity of micropiles are based on shear strength parameters of the soil within which a micropile is installed. These parameters are mostly received from laboratory tests or as an expert evaluation relying on soil description, classification and collected experience. This paper presents an approach that determines cohesion and angle of internal friction from diagrams of displacement on load, these being obtained by compression and traction load tests of real micropiles installed in the known soil. Furthermore, the diagrams are interpreted by the Mohr-Coulomb strength criterion and the desired values of shear strength are thus derived by using it.