Longitudinal Stresses in Buried Pipesby Reynold K. Watkins, Utah State Univ, Logan, UT, USA,
Abstract: Longitudinal stresses are inevitable in buried pipes even in pipes with gasketed joints. Longitudinal stresses in any pipe section are cumulative. They include stresses due to soil friction as the pipe section changes length either by the Poisson effect of internal pressure or by change in temperature. They include stresses due to beam bending of the pipe over high/hard spots in the bedding. Longitudinal stresses should be understood by the pipe manufacturer and by the pipeline design engineer.
Subject Headings: Buried pipes | Soil stress | Stress analysis | Pipe joints | Friction | Soil-pipe interaction | Bending (structural) | Pipe bedding
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