DEFENCE Redchyts



2018 ◊ Volume 1 (91) ◊ Issue 3 p. 249-267

A. I. Bileush*, V. L. Fridrihson*, O. I. Krivonog*, V. V. Krivonog*

* Institute of Hydromechanics of NAS of Ukraine, Kyiv, Ukraine

Studying the "soil-geotextiles" construction as a foundation cushion for enhancement of strength of weak soils

Gidrodin. akust. 2018, 1(3):249-267




Topical issues concerning possible construction in the areas with low load-bearing capacity soils occupying a large part of Ukraine call for the design and implementation of the measures to enhance the strength of soft soils as a foundation basis. The paper deals with the results of the study of the work of a ground construction of a foundation cushion reinforced with geosynthetic materials to strengthen the weak bases under the foundations of the structures. The experiments were conducted using the small-scale models, and the numerical modeling was performed with the use of a software complex PLAXIS. The above-mentioned construction is a volume-closed system the strength of which is determined by its geometry, the strength of geosyntetic materials, strength of their connection, type and density of the aggregate. The reinforcing mesh distributes the stresses over the entire area of reinforcement providing the increase in the bearing capacity of the base of the foundation and reducing its deformation. In turn, geotextiles perform the function of separating the layer between the base soil and the aggregate. Considering that the geogrid works in tension and the compacted aggregate works in compression, one could take that the reinforced soil structures under the influence of an external load imitate the behavior of the slab on an elastic soil foundation. The results of experimental and numerical studies show that the new construction of the foundation cushion reduces the foundation deformations for (25...30)% and provides the reduction of construction costs in comparison with traditional engineering solutions. The proposed design of the foundation cushion can be used to strengthen weak soil foundations for staple-type shoes of prefabricated and monolithic reinforced concrete columns, as well as for strip and column foundations for walls in the industrial and civil construction.


the "soil-geotextiles" construction, a foundation cushion, mathematical model


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