Settlement and Bearing Capacity of Stone Columns Foundation
Publication: Geo-Congress 2022
ABSTRACT
Settlements due to subjected dead and live loads induce normal, lateral, and shear stresses that affect the geotechnical capacity of the stone column. Excessive vertical loads can cause bulging failure near the top of the end bearing of the stone column to the relative displacement at the interface with the surrounding soil. Most studies have neglected the elastic–plastic behavior of the soil and column due to the complexity of the problem and propose the serviceability limit state to estimate the bearing capacity and settlement. The objective of the current model is to represent more realistically the interaction of the column-soil behavior considering the elastic–plastic model and determine the bearing capacity of the column in a composite foundation subjected to extreme vertical loads. Finite element analysis was carried out on a single-end bearing stone column installed in soft clay soil. Empirical correlations were developed for stresses via settlement acting on the top of the column up to failure. The validity of the solution was verified through a comparison with the measurement data and other existing analytical solutions.
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Geo-Congress 2022
Pages: 73 - 83
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Published online: Mar 17, 2022
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