ONCE AGAIN ABOUT THE SETTLING OF FOUNDATION SOIL
AS A MULTIFACTORIAL INTEGRATED ENGINEERING GEOLOGICAL PROCESS

S. N. Chernysheva,#, P. I. Kashperyukb,##, and A. M. Martynovc,### a National Research Moscow State University of Civil Engineering (MGSU),
Yaroslavskoye shosse, 26, Moscow, 129337 Russia

b Scientific and Production Co. Special Surveys for High-rise Construction Ltd. Arkhitektora Vlasova ul., 45a, Moscow, 117393 Russia

c Moscow United Energy Company JSC “MOEK-Project”, Nizhnyaya Krasnosel’skaya ul,. 28, str. 2, Moscow, 105066 Russia
#e-mail: 9581148@list.ru
##e-mail: npf-sivs@yandex.ru
###e-mail: martynov30am@gmail.com

The article substantiates the need to consider the foundation soil settlement under any engineering structure not as a vertical displacement of the structure due to compression, compaction or other changes in the rocks lying at its base, but as a multifactorial integral engineering geological process associated with vertical subsidence of soil in the base of buildings and structures due to a decrease in soil volume upon its deformation under load or changes (deterioration) of its strength and deformation properties in the process of natural and technogenic effects. For the first time, S.N. Sotnikov’s graph of the inaccuracy in calculating the settlement of the foundation soil, calculated by the method of layer-by-layer summation to that actually observed is published. It is noted that the estimated predicted settlement of foundation soils provided by the project for weakly compressible soils, as a rule, is 40–60% higher than actual ones, and for strongly compressible soils, actual settlement may be several times higher than the calculated one. The authors explain such a discrepancy by the mechanical approach to modeling the settlement of foundation soils, whereas it is rather a multifactor engineering geological process variable in space and time. A number of examples in various regions of the country show a wide range of different natural geological and technogenic processes that affect the unevenness, size and duration of settling of foundation soils under various buildings and structures. Examples of management and regulation of these processes are given.

Keywords: ground settling, foundation soils, process control, calculation error, parameters of geotechnical conditions, forecast of actual settlement

DOI: 10.31857/S0869780920020034

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