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A Safety Evaluation on the Ring Deflection of Buried GRP Pipes
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 Title & Authors
A Safety Evaluation on the Ring Deflection of Buried GRP Pipes
Park, Joon-Seok; Kim, Sun-Hee; Kim, Eung-Ho; Yoon, Soon-Jong;
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Recently, the use of buried glass fiber reinforced plastic (GRP) pipes is widespread and ever increasing trend in the industry. GRP pipes are attractive for use in harsh environments, such as for the collection and transmission of liquids which are abrasive and/or corrosive. The structural behavior of a GRP pipes buried under the ground is different from that of a rigid one made of concrete or clay, for example. A GRP pipe buried under the ground is deflected circumferentially by several percent and the stresses in the pipe are mainly compressive stresses. A GRP pipes has been introduced by a number of manufacturers for selection and used by underground pipeline designers. In all cases, the modified Spangler's equation is recommended by these manufacturers for predicting the ring deflection of these pipes under dead and live loads. In this paper, the ring deflection of buried GRP pipe is evaluated and discussed based on the result of analytical investigation.
glass fiber reinforced composite;buried GRP pipe;ring deflection;
 Cited by
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