Seismic performance of tank foundations improved with stone columns
Saeid NikKhah Nasab
- Vol. 29, Iss: 03, pp 324-332
TLDR
In this paper, a linear numerical model of the structure-foundation-soil-stone column was simulated using the ABAQUS and it was shown that with the increase of the length of stone columns a decrease in settlement occurred, while the increase more than a specific threshold had no significant effect to decrease the uplift and settlement.Abstract:
Natural soil in engineering practices is not always considered to bear loads of above structures. In such a way, it is necessary to improve the quality of the soil before any constructions. Tanks are the structures that apply significant load to the beneath soil and they are usually constructed with circular foundations in shape. Seismic loads can apply irremediable damages to the structures and sometimes tanks are the highly important infrastructures during earthquakes. One of the most techniques that has been recently widely used on soft deposits and loose finegrained soils is stone columns or singular piles. The stone columns increase the strength of loose soils and also decrease settlements induced by applying the loads. In this study, a linear numerical model of the structure-foundation-soil-stone column was simulated using the ABAQUS. Results show that with the increase of the length of stone columns a decrease in settlement occurred, while the increase of length more than a specific threshold had no significant effect to decrease the uplift and settlement.read more
Citations
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Proceedings ArticleDOI
Evaluation of code provisions for seismic performance of unachored liquid storage tanks
TL;DR: In this paper, the authors used Coupled Eulerian-Lagrangian (CEL) and mechanical spring-mass analogy nonlinear finite element computational methods to predict seismic performance of unanchored liquid storage tanks.
References
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Journal ArticleDOI
Group effects in stone column foundations: model tests
TL;DR: In this paper, an exhumation technique has been used to discover the deformed shapes of the model stone columns and then to deduce the way in which the columns have transferred load to the surrounding clay.
Journal ArticleDOI
Comparative study on the behavior of encased stone column and conventional stone column
S. N. Malarvizhi,Ilamparuthi +1 more
TL;DR: In this paper, the behavior of the encased stone column stabilized bed is experimentally investigated and analyzed numerically, and material behaviour is simulated using Soft Soil, Mohr Coulomb and Geogrid models for clay, stone material and encasement respectively and validated with experimental results.
Journal ArticleDOI
Analysis of stone-column reinforced foundations
J. S. Lee,G. N. Pande +1 more
TL;DR: In this article, a numerical model is proposed to analyse elastic as well as elastoplastic behavior of stone-column reinforced foundations, where the columns are assumed to be dispersed within the in situ soil.
Journal ArticleDOI
Laboratory model studies on unreinforced and geogrid-reinforced sand bed over stone column-improved soft clay
TL;DR: In this article, a series of laboratory model tests on unreinforced and geogrid-reinforced sand bed resting on stone column-improved soft clay have been presented.