Buckling of Soil-Surrounded Tubes

by Ulrich Luscher,

Serial Information: Journal of the Soil Mechanics and Foundations Division, 1966, Vol. 92, Issue 6, Pg. 211-228

Document Type: Journal Paper


This paper describes a theoretical and experimental investigation of buckling of a tube surrounded by a soil in a circular symmetric configuration. The tube was failed by increasing the effective stress and the pore pressure acting on the tube. Results correlated well with the theory for buckling of an elastically supported tube. Further, the modulus of elastic soil support was shown to agree well with the modulus of resistance of the surrounding soil cylinder to uniform pressure applied at its inner boundary. Application of the results to practical situation indicated that the surrounding soil increases the buckling resistance of tubes by orders of magnitude over that of unsupported tubes. Hence, in reasonably stiff soil elastic buckling at stresses much below yield is a design criterion only for extremely thin-walled metal tubes.

Subject Headings: Tubes (structure) | Buckling | Soil modulus | Elastic analysis | Soil pressure | Effective stress | Load and resistance factor design | Soil analysis

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