Soil-structure interaction of an earth pressure cell

Gregory S. Wachman, Joseph F. Labuz

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


The output from an earth pressure cell (EPC) is usually related to the normal stress in soil through fluid calibration, where a known pressure is applied to the EPC and the output is recorded. However, distribution of normal stress within a soil is not uniform, and the EPC is not an ideal membrane-bending stiffness affects the response. These factors complicate the performance of the EPC. A calibration procedure for an EPC is reviewed, and it is shown that these controversial sensors can provide an accurate measure of average normal stress if calibrated in soil at a given density. In addition, a soil-structure interaction model is proposed to explain why soil calibration is necessary.

Original languageEnglish (US)
Pages (from-to)843-845
Number of pages3
JournalJournal of Geotechnical and Geoenvironmental Engineering
Issue number9
StatePublished - Sep 9 2011


  • Calibration
  • Contact pressure
  • Earth pressure
  • Soil stress
  • Soil-structure interactions


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