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TECHNICAL PAPERS

Analytical Study of Appropriate Design for High-Grade Induction Bend Pipes Subjected to Large Ground Deformation

[+] Author and Article Information
Hiroshi Yatabe, Naoki Fukuda, Tomoki Masuda

Pipeline Technology Center, Tokyo Gas Co., Ltd., 1-7-7, Suehiro-cho, Tsurumi-ku, Yokohama, 230-0045, Japan

Masao Toyoda

Osaka University, 2-1, Yamada-oka, Suita, 565-0871, Japan

J. Offshore Mech. Arct. Eng 126(4), 376-383 (Mar 07, 2005) (8 pages) doi:10.1115/1.1839881 History: Received September 15, 2003; Revised November 26, 2003; Online March 07, 2005
Copyright © 2004 by ASME
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References

Figures

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Material flow curves for FE analyses
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Modeling for the imperfection in the bending radius
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Observed bulge during the “transition” part
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Material properties during the “transition” part
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Typical M–ω curve of the bend pipe under the bending load
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Deformation at the Mmax in Model 1
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The relationship between M and ω in Model 1
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The Mmax and ωb in Models 1–4
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Definition of the “complementary energy”
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The relationships between the “complementary energy” and the ωb in Models 1–5
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The relationships between M and ω in Models 1, 5, and 6
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Deformation behaviors at the Mmax
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The relationships between M and ω in Models 1, 7, and 8
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The relationships between M and ω in Models 1 and 9–11
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Deformation at the Mmax of Model 11 (closing mode)
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Deformation at the Mmax of Model 11 (opening mode)
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Condition for the ground deformation
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FE model for evaluating the deformability of the buried pipelines
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Modeling of the soil/pipe interaction
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The relationships between the ground displacement and the bending angle at bend pipe

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