Experimental research of a flexible retaining wall model in laboratory conditions
https://doi.org/10.37538/2224-9494-2024-2(41)-103-117
EDN: TEHFGK
Abstract
Introduction. The Russian standards determine the lateral earth pressure at the failure surface stage, which corresponds to the Coulomb’s theory. In this case, the limit values of earth pressure on the flexible wall remain independent from the nature and intensity of deformation of the retaining structure. Therefore, computational methods for retaining walls are to be improved considering the above-mentioned factors.
Aim. To obtain experimental data in order to develop a computational method for determination of the active earth pressure on retaining structures depending on their deformations.
Materials and methods. Experimental tests were carried out by physical simulation for various models of flexible retaining walls using a purpose-designed laboratory test bench. Medium sand was used as a model backfill soil; its physical properties were determined under laboratory conditions in accordance with State Standard 5180-2015.
Results. The tests provided data on the character of backfill soil deformations within the wedge of failure for different kinematic conditions of the retaining wall model and, accordingly, justified the application of inclined block phenomenological model, used to develop a computational method for determining the active earth pressure on retaining walls.
Conclusions. Experimental tests indicate the correlation between deformation nature of the backfill soil and accepted conditions of soil operation during the development of engineering method for determining the lateral earth pressure. The obtained experimental data can be used in adoption and verification of the suggested computational method that enables shoring of excavations to be designed more reasonably in mutual conformity with the actual earth pressure diagrams.
Keywords
Supporting agencies: The article was written as part of the implementation of R&D at the expense of funding from the Federal Center for Regulation, Standardization and Technical Assessment in Construction (FAU “FCC”).
About the Author
V. V. Bryksin
Research Institute of Bases and Underground Structures named after N.M. Gersevanov, JSC Research Center of
Construction
Russian Federation
Russian Federation
Vitaly V. Bryksin, Senior Researcher, Laboratory of Methods for Calculating Underground Structures and Geotechnical Forecasting
Ryazanskiy ave., 59, Moscow, 109428, Russian Federation
e-mail: geo.pgs@mail.ru
tel.: +7 (926) 581-94-28
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Review
For citations:
Bryksin V.V. Experimental research of a flexible retaining wall model in laboratory conditions. Bulletin of Science and Research Center of Construction. 2024;41(2):103-117. (In Russ.) https://doi.org/10.37538/2224-9494-2024-2(41)-103-117. EDN: TEHFGK
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