Title :
Measurements of soil contact stress in a harsh environment
Author :
Beijer Lundberg, A. ; Djikstra, J. ; van Beek, K.
Author_Institution :
Sect. Geo-Eng., Univ. of Technol. Delft, Delft, Netherlands
Abstract :
A model pile has been instrumented with horizontal contact stress sensors for use in a geotechnical centrifuge. Due to the harsh testing environment and measurement difficulties at the soil-structure interface a novel design has been developed. Design, instrumentation and calibration of the horizontal contact stress sensors, installed on thin metal membranes in the pile body, are described. A numerical model is employed to analyze the influence of the membrane geometry compared to an analytical solution. A sensitivity analysis is performed to assess the influence of manufacturing irregularities on the strain gauge output signal.
Keywords :
geophysical equipment; soil; geotechnical centrifuge; harsh testing environment; horizontal contact stress sensors; membrane geometry; model pile; pile body; sensitivity analysis; soil contact stress; soil-structure interface; strain gauge output signal; thin metal membranes; Calibration; Numerical models; Sensitivity analysis; Sensors; Strain; Stress; Stress measurement; harsh environment; soil-structure interface; stress sensor;
Conference_Titel :
Instrumentation and Measurement Technology Conference (I2MTC), 2012 IEEE International
Conference_Location :
Graz
Print_ISBN :
978-1-4577-1773-4
DOI :
10.1109/I2MTC.2012.6229196
