The Pipe/Soil Stiffness Ratio Variableby Jay B. Schrock, JSC Int Engineering, Carmichael, United States,
Abstract: This paper reviews the factors which affect the reactions and defines performance limitations of buried flexible plastic pipe as a function of load-induced strains and deflections. The pipe/soil stiffness ratio exerts important influence on stress/strain from the loadings. The type of pipe material and wall design determines the pipe's capacity to resist these reactions without adverse results. The long term interaction between the pipe zone and insitu trench wall soil materials also impacts the resultant deflection/strain relationships.
Subject Headings: Soil-pipe interaction | Load factors | Pipelines | Plastic pipes | Strain | Displacement (mechanics) | Stiffening | Pipe materials
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