Ground base deformation by circular plate peculiarities

Mykola Zotsenko,Iryna Lartseva,Svitlana Sivitska,Yuriy Vynnykov,G Vatulia,O Darenskyi,A Plugin

doi:10.1051/matecconf/201823002040

Mykola Zotsenko, Iryna Lartseva + Show 5 more

Open Access

https://doi.org/10.1051/matecconf/201823002040

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Abstract

It is established that at the moment of the onset of the boundary equilibrium of the base under a central loaded plate, an elastic core is formed in the form of a cone, all particles move along with the plate progressively down. In this case, within the limits of the “area of influence” the boundary condition of the base is violated by protrusion or consolidation of soils. The volume of the “area of influence” is determined by the height of the elastic core, from which its diameter is calculated. Experiments using conical tips were made and the height of the elastic core was determined and the diameter of the “area of influence” was determined. For creation at penetration and probing friction of soil on a ground the conic tip is executed rough with cylindrical stages. Under the steps of the tip, formed areas of compacted soil, moving along with it, creating a so-called “ground shirt” in the form of a cone with a creature at an angle α to the vertical. The obtained data allowed specifying coefficients of bearing capacity of soils, which are used in construction norms.

Highlights

With the gradual loading of a rigid circular plate from the surface the deformation of its base includes three phases [7]: 1 – a compaction phase, during which the elastic core of compacted soil is formed; 2 – a local sliding phase, where with further increase in the load on outside the core shifts begin to develop changes that occur first in the individual points of the array, and the growth of tensions occupy a larger area; 3 – a phase of destruction, where zones of local shifts are gradually guided, creating so-called sliding surfaces, with the complete plate formation significantly precipitates when bulging the soil on the surface and in the sides
Under a central loaded circular plate, an elastic core is formed in the form of a cone, all particles, along with the plate, move progressively downward
It is necessary to determine experimentally the height of the elastic core, which is formed during the circular plate loading

Summary

Introduction

Modern methods of mathematical modeling of geotechnical processes [1] provide the model construction of the structure surrounding soil foundation interaction [2,3,4,5,6]. With the gradual loading of a rigid circular plate from the surface the deformation of its base includes three phases [7]:. 1 – a compaction phase, during which the elastic core of compacted soil is formed; 2 – a local sliding phase, where with further increase in the load on outside the core shifts begin to develop changes that occur first in the individual points of the array, and the growth of tensions occupy a larger area; 3 – a phase of destruction, where zones of local shifts are gradually guided, creating so-called sliding surfaces, with the complete plate formation significantly precipitates when bulging the soil on the surface and in the sides. Under a central loaded circular plate, an elastic core is formed in the form of a cone, all particles, along with the plate, move progressively downward

Analysis of resent research and publications

Establishing the objective and tasks of the study

The main part of the study

Conclusions