Stress distribution around the conduit buried within a soil slope – An experimental investigation
School of Engineering
Higher Education Commission, Government of the Islamic Republic of Pakistan
The use of conduits for transportation of utilities is very common around the world. The safe design and installation of these conduits depend upon the understanding of the soil-conduit interaction and the resulting stress distribution. This research paper presents a laboratory model test investigation of the effect of crest distance of the conduit buried within a sandy soil slope on the stress distribution around it and its structural response to the applied surface pressure. The crest distance of the conduit was varied from 0.25Bc to 2Bc; Bc being the outer diameter of the conduit. The results show that the stress distribution around the conduit buried within the soil slope differs significantly as compared to the conduit buried under the horizontal ground. The crest distance of the conduit from the slope edge and the resulting soil-conduit interaction governs the stress distribution and its structural response to the applied pressure. The graphical presentations, and the predicted soil-conduit interactions, as included in this paper, can be used routinely by the practicing engineers for the safe design and installation of the conduits buried within a soil slope.