Soil-Pipe Interaction and Pipeline Design

by Syed Ahmed, (A.M.ASCE), Sr. Geotechnical Engr.; Law Engrg. Testing Co., 5500 Guhn Rd., Houston Tex., 77040,
Carl L. Brassow, (A.M.ASCE), Chief Engr.; Law Engrg. Testing Co., 5500 Guhn Rd., Houston, Tex., 77040,
Ralph W. McMickle, Manager of Engineer; Pipeline Services, Ford, Bacon and Davis, Monroe, La.,

Serial Information: Transportation Engineering Journal of ASCE, 1981, Vol. 107, Issue 1, Pg. 45-58

Document Type: Journal Paper


The problem of steel pipe bend design with and without lateral soil restraint is studied, and the effect of backfill soil deformation on the bend design is postulated. Studies show that a finite element model utilizing nonlinear soil properties is superior to conventional earth pressure theories and can result in an economic design. The effect of backfill type and the depth of soil cover in resisting the outward radial forces at bend locations are examined. Practical design and construction recommendations are presented.

Subject Headings: Soil-pipe interaction | Soil deformation | Plastic design | Pipeline design | Backfills | Finite element method | Soil properties | Soil pressure

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