Abstract
Interest in the problem of circular flexible conduits buried under very deep fills has prompted a study of the effects of in-plane compressibility in the conduit wall. A model of a highly flexible conduit consisting of a 17 mm diameter rubber tube was located on the axis of an otherwise conventional 102 mm diameter triaxial test specimen. While the tube was supported against the dense sand soil by a nominal water pressure the cell pressure was progressively increased to the capacity of the apparatus. The decrease in diameter of the tube was determined from volume change measurements. No indication of catastrophic failure was observed but, instead, a bilinear stress-deflection response for which the rate of deflection at the higher stress levels was considerably less than at lower levels. The maximum total diameter change was about 3 per cent. An elastic-plastic dilating-soil model is proposed to explain the response and it is suggested that the lower strain rate is associated with development of a predominantly critical state condition. (Author/TRRL)
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
