DESCRIPTION OF A PRESSURE CELL FOR THE MEASUREMENT OF EARTH PRESSURE

1939 ◽  
Vol 17a (11) ◽  
pp. 216-220 ◽  
Author(s):  
I. F. Morrison ◽  
W. E. Cornish
Keyword(s):  
Earth Pressure ◽  
Vibrating Wire ◽  
Electrical Circuits ◽  
Pressure Cell ◽  
Wire Method

The vibrating wire method for measuring strains is used to determine the pressure applied to an earth pressure cell. The construction of the cell, the principle on which it acts, and electrical circuits are described.

scholarly journals Development of Gas Viscosity Measurement System with Vibrating Wire Method

Netsu Bussei ◽  
2015 ◽  
Vol 28 (1) ◽  
pp. 15-21 ◽  
Author(s):  
Kosuke Yoshimura ◽  
Temujin Uehara ◽  
Kan'ei Shinzato ◽  
Tatsuya Hisatsugu ◽  
Naoya Sakoda ◽  
...  
Keyword(s):  
Measurement System ◽  
Viscosity Measurement ◽  
Vibrating Wire ◽  
Gas Viscosity ◽  
Wire Method

Factors Affecting the Performance of a Pneumatic Earth Pressure Cell

1986 ◽  
Vol 9 (2) ◽  
pp. 102 ◽  
Author(s):  
VP Drnevich ◽  
GY Felio ◽  
GE Bauer
Keyword(s):  
Earth Pressure ◽  
Factors Affecting ◽  
Pressure Cell

scholarly journals The influence of temperature on earth pressure cell readings

2004 ◽  
Vol 41 (3) ◽  
pp. 551-559 ◽  
Author(s):  
Lyne Daigle ◽  
Jack Q Zhao
Keyword(s):  
Temperature Effect ◽  
Applied Pressure ◽  
Earth Pressure ◽  
Temperature Calibration ◽  
Soil Pressure ◽  
Buried Structures ◽  
Pressure Cell ◽  
Linear Correction ◽  
Influence Of Temperature On ◽  
Measure Soil Pressure

Vibrating-wire earth pressure cells are often used to measure soil pressure in fills and embankments or contact pressure between soil and buried structures. Instrumentation companies provide each cell with a formula to calculate pressure based on frequency and temperature readings. This paper presents the calibration work that was carried out on a series of 76 mm diameter cells and four 228 mm diameter cells with temperatures ranging from –10 to +30 °C with and without the effect of applied pressure. Based on this work and additional data from two field sites, it was found that temperature calibration factors given on the calibration sheet specific to each cell largely underestimated the temperature effect. It was also found that the correction factors were dependent not only on temperature, but also on the pressure applied to the cell. The temperature calibration factor, which is given as a linear correction on the calibration datasheet, becomes parabolic as a pressure is applied on the cell. Based on the findings, recommendations are provided for minimizing the temperature effect on pressure cell readings and improving the accuracy of the temperature calibration factor.Key words: earth pressure cells, soil pressure, temperature calibration, instrumentation.

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