CLOSED FORM SOLUTION AND FINITE ELEMENT ANALYSIS FOR BURIED FLEXIBLE PIPE UNDER HIGH FILLS

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概要

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• Flexible pipes are traditionally used for shallow burial depth, say less than 10m. In recent years, flexible pipes are increasingly used in the difficult terrains for infrastructures, landfills, residential, and industrial developments. Occasionally, the fill height may exceed 20 to 30m. The existing guidelines do not address the design of flexible pipes under such high fills. In this paper, a general solution for the moment and displacements of a thin-wall ring subject to external earth pressures exerted by the high fills was derived. A finite element procedure was also used to analyze the pipe behavior under high fill. The closed-form solution and finite element results were verified with the measurements obtained from the field under a fill height of 47.1m. The analytical and finite element results showed good agreement with the measured results. This study revealed that existing design for pipe buried under high fill could be overly conservative and uneconomical. The vertical and lateral earth pressure diagrams for design were revised.

• 社団法人地盤工学会の論文

著者

• LING Hoe

  Department of Civil Engineering, Columbia University

• Ling Hoe

  Department Of Civil Engineering And Engineering Mechanics Columbia University

• Ling Hoe

  Department Of Civil And Environmental Engineering University Of Delaware

• Shoda Daisuke

  Department Of Agricultural And Environmental Engineering Faculty Of Agriculture Kobe University

• KAWABATA TOSHINORI

  Department of Agricultural and Environmental Engineering, Faculty of Agriculture, Kobe University

• MOHRI YOSHIYUKI

  Soil Mechanics Laboratory, National Institute for Rural Engineering

• Kawabata Toshinori

  Department Of Agricultural And Environmental Engineering Faculty Of Agriculture Kobe University

• Mohri Yoshiyuki

  Soil Mechanics Laboratory National Institute For Rural Engineering

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• CLOSED FORM SOLUTION AND FINITE ELEMENT ANALYSIS FOR BURIED FLEXIBLE PIPE UNDER HIGH FILLS

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