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Numerical analysis of stresses for cured-in-place-pipe linings

机译：现场硫化管衬应力的数值分析

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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 repaying. 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.
机译：地下管道，例如供水管道和下水道管道，会因老化而降低强度和开裂。为了防止强度降低，挖掘技术已被广泛使用，该技术允许用新管道替换现有管道。但是，这些方法需要封路，交通管制和还款。在过去的二十年中，已经进行了各种非开挖（无沟槽）维修。本文介绍了用现浇管（CIPP）衬砌修复的管道的应力数值分析方法。 CIPP衬里是将树脂浸渍管安装到老化的管道中并在适当位置固化以在管道内生产新的结构管道的通用名称。给出了不同衬管类型的示例及其对减少管壁应力的影响。

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