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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

Japan Gas Association, 2000, “Recommended Practice for Earthquake-Resistant Design of High Pressure Gas Pipeline” (in Japanese).
Japan Gas Association, 2001, “Recommended Practice for Design of Gas Pipelines in Areas Subjected to Liquefaction” (in Japanese).
Japan Gas Association, 1984, “Nihonkai-Chubu Earthquake and the City Gas” (in Japanese).
Suzuki, N., and Nasu, M., 1989, “Nonlinear Analysis of Welded Elbows Subjected to In-Plane Bending,” Computers & Structures, Pergamon Press, Vol. 32, pp. 871–881.
Yoshizaki,  K., Hosokawa,  N., Ando,  H., Oguchi,  N., Sogabe,  K., and Hamada,  M., 1999, “Deformation Behavior of Buried Pipelines With Elbows Subjected to Large Ground Displacement,” JSCE J. Struct. Mech. Earthquake Eng., 626, pp. 173–184 (in Japanese).
Hosokawa,  N., Yatabe,  H., and Watanabe,  T., 2000, “In-Plane Bending Behavior of a Large Diameter Steel Elbow for Gas Pipeline,” JSCE J. Struct. Eng., 46A, pp. 17–24 (in Japanese).
Yoshizaki,  K., O’Rourke,  T. D., and Hamada,  M., 2001, “Large Deformation Behavior of Buried Pipelines With Low-Angle Elbows Subjected to Permanent Ground Deformation,” JSCE J. Struct. Mech. Earthquake Eng., 675, pp. 41–52.
Miki, C., Kobayashi, T., Oguchi, N., Uchida, T., Suganuma, A., and Katoh, A., 2000, “Deformation and Fracture Properties of Steel Pipe Bend With Internal Pressure Subjected to In-Plane Bending,” Proceedings of the 12th World Conference of Earthquake Engineering.
Healy, J., and Billingham, J., 1995, “Metallurgical Considerations of the High Yield to Ultimate Ratio in High Strength Steels for Use in Offshore Engineering,” Proceedings of the 14th International Offshore Mechanics and Arctic Engineering Conference, 3 , pp. 365–370.
Kamba,  T., 1998, “Stub Column Test of High-Strength CHS Steel Column With Small Diameter-to-Thickness Ratio,” AIJ J. Struct. Eng., 507, pp. 123–129 (in Japanese).
Ohata,  M., Tanaka,  N., Ohmasa,  M., and Toyoda,  M., 1999, “Control of Mechanical Properties for the Improvement of Deformability of Structural Components,” JSSC J. Construct. Steel,7, pp. 379–386 (in Japanese).
Vitali, L., Bruschi, R., Mørk, K. J., Levold, E., and Verley, R., 1999, “Hotpipe Project: Capacity of Pipes Subjected to Internal Pressure, Axial Force and Bending Moment,” in Proceedings of the 9th International Offshore and Polar Engineering Conference, pp. 22–33.
Dorey, A. B., Murray, D. W., and Chang, J. J., 2002, “Material Properties Effects on Critical Buckling Strains in Energy Pipelines,” Proceedings of the 4th International Pipeline Conference, IPC2002-27225.
Suzuki, N., and Toyoda, M., 2002, “Critical Compressive Strain of Linepipes Related to Workhardning Parameters,” Proceedings of the 21st International Offshore Mechanics and Arctic Engineering Conference, OMAE2002-28253.
Yatabe, H., Fukuda, N., Kawaguchi, S., and Masuda, T., 2001, “The Effect of the Mechanical Properties on the Deformability of the High Grade Linepipe,” Proceedings of the 20th International Offshore Mechanics and Arctic Engineering Conference, MAT-3102.
Hibbit, Karlsson, and Sorensen, Inc., 2001, “ABAQUS Standard User’s Manual,” version 6.2, Vol. 1–3.
Healy, J., Billingham, J., Billington, C., and Bolt, H., 1995, “Design Implications of the High Yield to Ultimate Ratio of High Strength Steels in Offshore Engineering,” Proceedings of the 14th International Offshore Mechanics and Arctic Engineering Conference, 3 , pp. 271–277.
Ishikawa, N., Endo, S., Kondo, J., and Takagishi, M., 2002, “Development of X80 Grade Induction Bend Pipe,” Proceedings of the 21st International Offshore Mechanics and Arctic Engineering Conference, OMAE2002-28182.

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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