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Influence of Frost Action on the Load Exerted on Buried Pipe

by Jan Molin, VBB-SWECO Consulting Group, Malmoe, Sweden,



Document Type: Proceeding Paper

Part of: Advances in Underground Pipeline Engineering

Abstract:

When work was started on revising the Swedish code for concrete pipes at the end of the 70's, a research project was carried out to evaluate the risk of increased load due to frost action under Swedish conditions. Two test pipelines were constructed, consisting of concrete pipes with a diameter of 300 mm installed in both narrow and wide pipe trenches, and a PVC sewage pipe with a diameter of 300 mm. The tests showed that in certain types of backfill material frost will have an influence on the load exerted on a buried pipe. This was found to be of substantial importance for pipes laid in narrow trenches and designed for normal trench load. A description of the tests is given in this paper accompanied by a presentation and analysis of the results.

Subject Headings: Concrete pipes | Buried pipes | Plastic pipes | Pipe materials | Load tests | Pressure pipes | Pipeline materials

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