BibTeX
@MISC{Buchheister_theinfluence,
author = {Juliane Buchheister and Jan Laue},
title = {THE INFLUENCE OF DIFFERENT STRESS STATES ON SOIL},
year = {}
}
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Abstract
Liquefaction of soil depends on the state and type of soil, loading function and the initial stress state of a soil element prior to a dynamic event. Most studies focus on an initial stress state from the free field while assuming σ2 = σ3. Therefore, this stress state can be studied in a triaxial apparatus. With a hollow cylinder apparatus, it is possible to apply any possible combination of σ1, σ2 and σ3 in the soil prior to testing and thus enables the reproduction of boundary conditions e.g. as given for different soil elements under a building. Underneath a building different initial stress states need to be taken into account to judge the safety and the behavior of the building during and after an earthquake. The focus in this contribution is to study the influence of these stress states. For a typical building the initial stress states were chosen at three locations in a depth of 5 m. Experiments with fine sand are carried out under these initial stress states with combined cyclic shear and axial loading. The results are presented and discussed in terms of the influence of stress state on liquefaction susceptibility and potential failures modes of a building type to be considered in soil structure interaction.
Keyphrases
initial stress state stress state influence different stress state soil typical building soil element free field dynamic event soil structure interaction possible combination building type different soil element potential failure mode axial loading hollow cylinder apparatus combined cyclic shear triaxial apparatus building different initial stress state liquefaction susceptibility fine sand boundary condition soil depends
