Determination of Design Coefficients for New Polyethylene Pipes Used in the Rehabilitation of Old Pipelines
Publication: Journal of Pipeline Systems Engineering and Practice
Volume 10, Issue 4
Abstract
The paper deals with an extension of a German advisory leaflet, which deals with static calculations for the rehabilitation of drains and sewers using lining and assembly procedures. Such procedures include, for example, pipe-lining technologies. For the structural analysis of new pipes, the advisory leaflet uses coefficients for the determination of internal forces and deformations. The coefficients were obtained based on certain assumptions and with the aid of nonlinear calculations. These assumptions place limitations on the practical design process in some cases. This especially concerns the use of different materials for new pipes, as well as geometrical imperfections in new and old pipes. Therefore, new coefficients were determined that are suitable for use in the practical design of new pipes made of polyethylene. Nonlinear analyses were performed using the finite-element method (FEM). In addition, a comparison of the German advisory leaflet and an American standard was performed.
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Acknowledgments
This paper has been prepared under project No. LO1408 “AdMaS UP—Advanced Materials, Structures and Technologies”, supported by the Ministry of Education, Youth and Sports of the Czech Republic under “National Sustainability Programme I”.
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Published In
Journal of Pipeline Systems Engineering and Practice
Volume 10 • Issue 4 • November 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: Aug 26, 2017
Accepted: Feb 12, 2019
Published online: Jul 25, 2019
Published in print: Nov 1, 2019
Discussion open until: Dec 25, 2019
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