Establishment and verification of the limit state design of the thin wall pipeline considering environmental and earthquake resistance
Project/Area Number |
20248026
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Research Category |
Grant-in-Aid for Scientific Research (A)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Irrigation, drainage and rural engineering/Rural planning
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Research Institution | Kobe University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
UCHIDA Kazunori 神戸大学, 大学院・農学研究科, 教授 (80111946)
INOUE Kazuya 神戸大学, 大学院・農学研究科, 助教 (00362765)
MOHRI Yoshiyuki 独立行政法人農業・食品産業技術総合研究機構, 農村工学研究所, 領域長 (90373224)
ARIYOSHI Mitsuru 独立行政法人農業・食品産業技術総合研究機構, 農村工学研究所, 研究員 (10414442)
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Project Period (FY) |
2008 – 2011
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Project Status |
Completed (Fiscal Year 2011)
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Budget Amount *help |
¥46,020,000 (Direct Cost: ¥35,400,000、Indirect Cost: ¥10,620,000)
Fiscal Year 2011: ¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
Fiscal Year 2010: ¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
Fiscal Year 2009: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
Fiscal Year 2008: ¥10,530,000 (Direct Cost: ¥8,100,000、Indirect Cost: ¥2,430,000)
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Keywords | 土質力学 / 応用力学 / 地中構造物 / パイプライン / 構造力学 / 座屈 / 模型実験 / 応力変形 / ひずみ / 土圧 / 遠心力模型実験 |
Research Abstract |
In designing, deflection and stress of the pipe are calculated through structural analysis based on bending ring stiffness EI/D^3. The pipes with equivalent bending ring stiffness would have the same behavior in design. However, it is easily understandable that the behavior of pipe may be influenced not only by EI/D^3, but also by the relationships between E and I. In this research, pit tests, centrifuge tests under 30G and large shaking table tests with 800gal input wave for buried flexible pipes were conducted to evaluate the effects of pipe thickness on the static and dynamic behavior. As a result, it was found that the larger bending strain and radial stress of the pipe occurred with the thinner wall. This result suggests that the probability of the buckling of the pipe is higher on thinner pipes. It is evident that the pipelines for irrigation should be designed in consideration of this fact.
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Report
(6 results)
Research Products
(60 results)
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[Journal Article] Dynamic Behavior of Buried Circular Structures during Earthquake by Discrete Element Method2011
Author(s)
Kawabata T., Iwasaki, Y., Dodo, H., Ling, H., Morhri Y.
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Journal Title
Proceedings of 21st International Offshore and Polar Engineering Conference, ISOPE 2011, Hawaii, USA
Related Report
Peer Reviewed
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[Journal Article] Vertical loading tests for buried flexible pipes with equivalent ring stiffness2010
Author(s)
Kawabata, T., Izumi, A., Hanazawa, T., Mohri, Y., Ling, H. I. and Ariyoshi, M.
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Journal Title
Proceedings of 20th International Offshore and Polar Engineering Conference
Related Report
Peer Reviewed
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[Journal Article] Lateral Loading Experiment on buried pipe using liquefied stabilized soil as backfill material for thrust restraint2010
Author(s)
Kawabata1 T., Kashiwagi, A., Sawada, Y., Okuno, S., Ling, H.I., Mohri Y.
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Journal Title
Proceedings of International Conference of Pipeline Engineering, ASCE, Colorado Springs, USA
Related Report
Peer Reviewed
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[Journal Article] Vertical loading tests for buried flexible pipes with equivalent ring stiffness2010
Author(s)
Kawabata T., Izumi, A., Hanazawa, T., Mohri Y., Ling, H.I., Ariyoshi M.
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Journal Title
Proceedings of 20th International Offshore and Polar Engineering Conference, ISOPE 2010, Beijing, China
Related Report
Peer Reviewed
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[Journal Article] Effect of pipe thickness on the behavior of flexible pipes with equivalent bending ring stiffness2009
Author(s)
Kawabata, T., Nadamoto, Y., Shoda, D., Izumi, A., Shimamoto, C., Inoue, K., Uchida, K., Mohri, Y., and Ariyoshi, M.
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Journal Title
Proceedings of 19th International Offshore and Polar Engineering Conference
Related Report
Peer Reviewed
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[Journal Article] Effect of pipe thickness on the behavior of flexible pipes with equivalent bending ring stiffness2009
Author(s)
Kawabata T., Nadamoto, Y., Shoda, D., Izumi, A., Shimamoto, C., Inoue, K., Uchida, K., Mohri, Y., Ariyoshi M.
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Journal Title
Proceedings of 19th Intemational Offshore and Polar Engineering Conference, ISOPE 2009, Osaka
Related Report
Peer Reviewed
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