Conclusions
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1.
In comparison with other cells based on pneumatic measuring methods [5], the cell here described has a more rigid membrane and a thickened central portion: this reduces the distortions introduced by the cell in the stress state of the soil.
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2.
The cell construction ensures parallel displacement of the nozzle during its regulation; this reduces the possibility of accidental errors and facilitates the establishment of the zero reading on the scale.
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3.
The measuring system ensures a sufficiently high sensitivity of the device.
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4.
The device is practically insensitive to temperature variations, unlike most cells based on electrical measuring methods.
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5.
The manufacturing techniques for the cells are very simple. These cells can be used for laboratory investigations of structures interacting with the soil under static loading conditions.
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Literature Cited
Guide for use of the direct method of measuring pressures in granular media and soils [in Russian], PÉM TsINIS Gosstroya SSSR (1965).
D. S. Baranov, “Selection of basic parameters of soil cells on the basis of the condition of minimum distortion of the measured pressure,” Transactions of the TsNIISK “Development of a method for wire strain gage investigation of structures” [in Russian], Gosstroiizdat, Moscow, No. 14 (1962).
T. Ya. Gorazdovskii and V. O. Vanuni, “Applications of the pneumatic method in investigations on models of strain displacements,” Gidrotekh. Stroitel’, No. 10 (1972).
T. Ya. Gorazdovskii, A. D. Sokolov, and V. O. Vanuni, “Pneumatic measuring system for pressure cells,” Ékspress-Informatsiya VNIIÉ GAZPROM No. 15 (1972).
P. H. D. S. Wikramaratna, “New Earth Pressure Cell,” Compt. Rend. 5. Congr. internat mecan Sols et trav fondat, Vol. 2, Paris (1961).
Additional information
Translated from Gidrotekhnicheskoe Stroitel’stvo. No. 4, pp. 43–45, April, 1973.
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Sokolov, A.D. Pneumatic device for measuring soil pressures. Hydrotechnical Construction 7, 375–377 (1973). https://doi.org/10.1007/BF02378589
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DOI: https://doi.org/10.1007/BF02378589