The use of miniature earth pressure cells in a multi-gravity environment

摘要

Although the measurement of physical phenomena such as pore water pressure, displacement and load is routinely carried out with a high degree of accuracy in small scale centrifuge models the accurate derivation of soil stresses poses a number ofproblems. This paper discusses the design, manufacture and use of miniature earth pressure cells in measuring changes in soil stress during the modelling of the installation and loading of compaction ground anchorages in the 500gTonne centrifuge at theUniversity of Manchester. Data are presented illustrating the degree of accuracy and repeatability of the soil stress derivation achieved and guidance is given on the sizing and instrumentation of miniature earth pressure cells.