Techno Press
Techno Press

Steel and Composite Structures   Volume 26, Number 1, January10 2018, pages 55-66
DOI: http://dx.doi.org/10.12989/scs.2018.26.1.055
 
Numerical evaluation of buried composite and steel pipe structures under the effects of gravity
William Toh, Long Bin Tan, Kwong Ming Tse, Karthikayen Raju, Heow Pueh Lee, Vincent Beng Chye Tan (Corr. Author)

 
Abstract     [Full Text]
    In this paper, the response of an underground fibreglass reinforced plastic (FRP) composite pipe system subjected to realistic loading scenarios that may be experienced by an actual buried pipeline is investigated. The model replicates an arbitrary site with a length of buried pipeline, passing through a 90o bend and into a valve pit. Various loading conditions, which include effects of pipe pressurization, differences in response between stainless steel and fibreglass composite pipes and severe loss of bed-soil support are studied. In addition to pipe response, the resulting soil stresses and ground settlement are also analysed. Furthermore, the locations of potential leakage and burst have also been identified by evaluating the contact pressures at the joints and by comparing stresses to the pipe hoop and axial failure strengths.
 
Key Words
    fibreglass reinforced plastic (FRP); composite pipe; FE modeling; geostatic loading
 
Address
William Toh, Long Bin Tan, Kwong Ming Tse, Karthikayen Raju,
Heow Pueh Lee, Vincent Beng Chye Tan: Department of Mechanical Engineering, National University of Singapore, 117578, Singapore
 

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