Numerical Analysis Of Stresses For
Cured-in-place-pipe Linings
Author(s)
C. Chuk, G. Urgessa & H. Thippeswamy
Abstract
Underground pipes, such as water supply pipes and sewer pipes, are subjected to
reduced strength and cracking due to aging. In order to combat strength
reductions, excavation technologies have been used widely that allow replacing
existing pipes with new pipes. However, these methods require road closures,
traffic regulation and repaving. Various non-excavation (trenchless) repairs have
been used in the last twenty years. This paper presents numerical analysis
methods of stresses for pipes rehabilitated with cured-in-place-pipe (CIPP)
linings. A CIPP lining is the common name given to the installation of a resin
impregnated tube into a deteriorated pipe and curing it in place to produce a new
structural pipe within a pipe. Examples of different liner types and their effect on
reducing pipe wall stresses are presented.
Keywords: CIPP, FRP, pipe rehabilitation, pipe lining, pipe stresses.
1 Introduction
The need to rehabilitate, replace, and repair drinking water and wastewater
systems in the United States is growing. The United States water infrastructure
(water distribution lines, sewer lines, water treatment plants, and storage
facilities) protects the environment as well as the public health. Most of the
drinking and wastewater infrastructure was built 30 years after the end of World
War II. It is very important for the country to prepare for the infrastructure
rehabilitation and replacement over the next few decades. If these problems are
ignored, the nation’s water and public health are put at risk. Selvakumar et al. [1]
Keywords
CIPP, FRP, pipe rehabilitation, pipe lining, pipe stresses
Related Book
Other papers in this volume
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