Progressive pressure measurements beneath a granular pile with and without base deflection

J. Y. Ooi, J. Ai, Z. Zhong, J. F. Chen, J. M. Rotter

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper describes an experimental investigation to measure the pressure distribution underneath a conical pile of granular material as the pile grows. Several factors have been suggested to explain the pressure dip observed under the apex of a pile but the relative significance of these factors is far from clear. This study was conducted using quite round rough particles in a relatively large scale experiment to avoid the possibility that particle scale effects would mask the macroscopic pressure distribution. A reproducible pressure profile with a significant central dip was observed in each test, which confirms that at macroscopic scale, the pressure dip is a stable and robust phenomenon when the pile is formed from a localised jet. The normalised data provide quantitative information on the vertical force redistribution away from the central zone. The results also show that base deflection is not a prerequisite for the pressure dip, but that it enhances both the magnitude and the width of the dip.

Original languageEnglish
Title of host publicationSTRUCTURES AND GRANULAR SOLIDS: FROM SCIENTIFIC PRINCIPLES TO ENGINEERING APPLICATIONS
EditorsJF Chen, JG Teng
Place of PublicationBOCA RATON
PublisherCRC PRESS-TAYLOR & FRANCIS GROUP
Pages87-92
Number of pages6
ISBN (Print)978-0-415-47594-5
Publication statusPublished - 2008
EventInternational Conference on Structures and Granular Solids - From Scientific Principles to Engineering Applications, - Edinburgh
Duration: 1 Jul 20082 Jul 2008

Conference

ConferenceInternational Conference on Structures and Granular Solids - From Scientific Principles to Engineering Applications,
CityEdinburgh
Period1/07/082/07/08

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