Volume 31, Issue 4 (July 2008)

    Measurement of Normal Pressures and Friction Forces Acting on Buried Pipes Subjected to Cyclic Axial Displacements in Laboratory Experiments

    (Received 19 September 2006; accepted 27 December 2007)

    Published Online: 2008

    CODEN: GTJOAD

      Format Pages Price  
    PDF Version 10 $25   ADD TO CART


    Abstract

    The earth pressure acting on buried pipes is decisive for the pipe design. For pipes shifting in the ground, such as district heating pipes, which are subjected to cyclic temperature loading, the mobilizable friction force, which is also dependent on the earth pressure load, is a very important quantity. Friction force changes with cyclic axial displacement of a pipeline in operation. A special testing device was designed to investigate the friction forces and the normal pressures on a pipe buried in sand and how these change during cyclic axial displacement dependent on system and soil parameters. The experimental setup is presented, and in particular the application of the tactile pressure sensor, the special measuring technique used, is described. The dependence of the decrease in friction force on pipe diameter, soil overburden height, and relative density of the soil was investigated in the tests. The results are presented and the findings are discussed.


    Author Information:

    Weidlich, I.
    Leibniz Universität Hannover, Institute of Soil Mechanics, Foundation Engineering and Waterpower Engineering, Hannover, Niedersachsen

    Achmus, M.
    Leibniz Universität Hannover, Institute of Soil Mechanics, Foundation Engineering and Waterpower Engineering, Hannover, Niedersachsen


    Stock #: GTJ100804

    ISSN: 0149-6115

    DOI: 10.1520/GTJ100804

    ASTM International is a member of CrossRef.

    Author
    Title Measurement of Normal Pressures and Friction Forces Acting on Buried Pipes Subjected to Cyclic Axial Displacements in Laboratory Experiments
    Symposium , 0000-00-00
    Committee D18