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Reliability assessment of earth pressure on rigid non-yielding retaining walls
Journal
Geotechnical Safety and Risk IV
Date Issued
2013-11-13
Author(s)
Dasaka, S. M.
Dave, T. N.
Gade, V. K.
Abstract
Pressure transducers are increasingly being used within soil mass or at soil-structure interface to monitor stresses at the point of installation. Calibration of these transducers provides unique relationship between applied pressure and measured stress. Routinely, calibration is performed by applying fluid pressure on diaphragm of transducer, however interpretation of data using fluid calibration results lead to measurement errors when transducer is used in soil for stress measurement. This paper presents comparison of calibration results of pressure transducer using fluid and soil calibration techniques. The bias factor in the earth pressure measurement using fluid calibration results are evaluated, which can be used with fluid calibration results to precisely arrive at the values of earth pressures on the retaining wall, in the absence of in-soil calibration test results.