Joint operation of the cellular structure as a system “frame - filling ground - base”

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Abstract


Relevance. The experience of constructed cellular structures and the results of computational and model studies carried out in our country and abroad to assess the joint work of the complicated complex “cellular frame - soil backfill of cells - foundation” indicates the sufficient reliability of such hydraulic structures. The main difficulty in the design of cellular structures is to reproduce the volumetric work of the complex “cellular frame - backfill soil - foundation soil” to identify structural reserves. Objectives. To study, through laboratory studies, the interaction of the frame and backfill of the cell and the base at different soil moisture, taking into account such factors as the granulometric composition of the backfill soil, the role of the surface tension of moisture contained in the soil, the geometric parameters of the structure itself and a number of other factors. Methods. Experimental studies on the model of the operation of a cellular structure without a bottom on a non-rocky (sandy) foundation for stability, subject to the similarity criteria, as well as studies of cells with different geometry and sizes with changes in moisture and particle size distribution of the soil of the cells. Results. Based on the results of model studies, a dependence is proposed to take into account the effect of surface tension forces, considering the hydraulic radius of the cell cross-section, wetted perimeter, cross-sectional area of the cell, etc. The interaction of the cellular structure with the base is also explored, taking into account the above parameters. The results of laboratory studies on considering the interaction of the frame and backfill of the cell soil at different moisture content of the aggregate, taking into account the granulometric composition of the backfill soil surface tension of moisture contained in the soil, geometric parameters of the structure itself and a number of other factors.


About the authors

Vladimir A. Zimnyukov

Russian State Agrarian University - Moscow Timiryazev Agricultural Academy

Author for correspondence.
Email: zimnyukov@rgau-msha.ru
ORCID iD: 0000-0002-9892-146X
49 Timiryazevskaya St, Moscow, 127434, Russian Federation

Associate Professor of the Department of Hydrotechnical Structures, Institute of Melioration, Water Management and Construction named after A.N. Kostyakov, Candidate of Technical Sciences

Marina I. Zborovskaya

Russian State Agrarian University - Moscow Timiryazev Agricultural Academy

Email: zimnyukov@rgau-msha.ru
ORCID iD: 0000-0002-8405-8757
49 Timiryazevskaya St, Moscow, 127434, Russian Federation

Associate Professor of the Department of Hydrotechnical Structures, Institute of Melioration, Water Management and Construction named after A.N. Kostyakov, Candidate of Technical Sciences

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