Theoretical study on buckling of deep water pipeline under external hydrostatic pressure

Jianhong Wang*, Atsushi Koizumi

*この研究の対応する著者

研究成果査読

3 被引用数 (Scopus)

抄録

Generally, the main water pipeline is built through installing steel pipes or iron pipes inside a shield tunnel or NATM tunnel and filling the annular void to form an integrated structure. However, the problem of buckling of inner pipe exists for such a structure because the most of the existing filling technologies fail to produce a tightly fitted liner. When the water pipeline is built deep underground, the separated structure should be adopted in order to ensure the minimum cross section of the tunnel as well as the safety of water pipe. In this study, the buckling of stiffened water pipe used for separated structure is investigated. Firstly, the formulas of general buckling and local buckling are derived with Ritz method, and the methods of the formulas application are given in terms of the critical pressure calculation and the buckling behavior simulation. Secondly, the methods are verified by numerical analysis and existing experiments. Finally, the local buckling design method for separated water pipeline structure is proposed, taking into account of the buckling characters of a practical water pipeline.

本文言語English
ページ(範囲)588-602
ページ数15
ジャーナルDoboku Gakkai Ronbunshuu A
64
3
DOI
出版ステータスPublished - 2008
外部発表はい

ASJC Scopus subject areas

  • 土木構造工学
  • 材料力学
  • 機械工学
  • 建築および建設

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