Rotational Characteristics of a Gasketed Bell and Spigot Joint in a Pressurized Reinforced Concrete Pipeline
Publication: Journal of Pipeline Systems Engineering and Practice
Volume 7, Issue 1
Abstract
Joints in gravity flow pipelines can be subjected to internal or external pressure, depending on the conditions. Such conditions will influence the rotational stiffness of the joints and therefore may affect the behavior of the pipeline responding to surface loading. The purpose of this article is to characterize the influence of pressure variations on joint stiffness and assess their effect on pipeline response to live loading. First, rotation tests on a 600-mm-diameter reinforced concrete pipeline with gasketed bell and spigot joints subjected to internal positive and negative pressure are described. Next, numerical analyses are performed to approximate the rotational stiffness of the joint observed during the tests. Subsequently, these results are employed in new numerical analyses to evaluate the influence of the rotational stiffness of the joint on the behavior of a buried pipeline subjected to surface loading. It is shown that variations in pressure affect the rotational stiffness of the joint; however, these variations have little effect on the response of a pipeline when subjected to live loading.
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Acknowledgments
This research was funded by the National Cooperative Highway Research Program (NCHRP) through the Transportation Research Board of the National Academy of Sciences, Washington DC. The findings, conclusions, and recommendations expressed in this paper do not necessarily reflect the views of the sponsors. Dr. Becerril García’s doctoral studies at Queen’s University were funded by the Mexican National Council for Science and Technology (CONACyT) and by the NCHRP. The authors would also like to thank Graeme Boyd for his invaluable technical support. The development of the testing facilities at Queen’s University was supported by funding from the Canada Foundation for Innovation, the Natural Sciences and Engineering Research Council of Canada, and the government of Ontario. The authors also thank Paul Imm from the Ontario Concrete Pipe Association and M-Con for donating the pipes tested in this project.
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Information & Authors
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Published In
Journal of Pipeline Systems Engineering and Practice
Volume 7 • Issue 1 • February 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Oct 28, 2014
Accepted: Apr 15, 2015
Published online: Jun 12, 2015
Discussion open until: Nov 12, 2015
Published in print: Feb 1, 2016
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