Title:
STEEL PIPE-CONCRETE COMPOSITE PILE, PROCESS FOR PRODUCTION OF THE PILE, AND STEEL PIPE FOR USE IN STEEL PILE-CONCRETE COMPOSITE PILE
Document Type and Number:
WIPO Patent Application WO/2011/036908
Kind Code:
A1
Abstract:
Disclosed is a steel pipe-concrete composite pile, in which the inside of a steel pipe is lined with a concrete or a concrete is filled in the inside of a steel pipe. In the steel pipe-concrete composite pile, the relationship represented by the formula: 325 N/mm2 <σ yd ≤ 5.15 σc (wherein σ yd (N/mm2) represents the design yield strength of the steel pipe; and σc (N/mm2) represents the compressive strength of the concrete) is fulfilled. In the steel pipe-concrete composite pile, the relationship represented by the formula: D/t ≤ 80+80×(2·R/D)1/4 (wherein D (mm) represents the diameter of the steel pipe; t (mm) represents the thickness of the steel pipe sheet; and R (mm) represents the thickness of the concrete) is also fulfilled. The steel pipe-concrete composite pile has the most suitable structure for the use of a material having high yield strength.
Inventors:
ONDA, Kunihiko (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
恩田邦彦 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
ICHIKAWA, Kazuomi (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
市川和臣 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
恩田邦彦 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
ICHIKAWA, Kazuomi (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
市川和臣 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
Application Number:
JP2010/055990
Publication Date:
March 31, 2011
Filing Date:
March 25, 2010
Export Citation:
Assignee:
JFE STEEL CORPORATION (2-3 Uchisaiwai-cho 2-chome, Chiyoda-ku Tokyo, 11, 〒1000011, JP)
JFEスチール株式会社 (〒11 東京都千代田区内幸町二丁目２番３号 Tokyo, 〒1000011, JP)
ONDA, Kunihiko (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
恩田邦彦 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
ICHIKAWA, Kazuomi (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
JFEスチール株式会社 (〒11 東京都千代田区内幸町二丁目２番３号 Tokyo, 〒1000011, JP)
ONDA, Kunihiko (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
恩田邦彦 (〒11 東京都千代田区内幸町二丁目２番３号JFEスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
ICHIKAWA, Kazuomi (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
International Classes:
E02D5/30; B21C37/12; E02D5/24
Attorney, Agent or Firm:
OCHIAI, Kenichiro (7th floor Yanagiya building. 1-10, Nihonbashi 2-chome, Chuo-k, Tokyo 27, 〒1030027, JP)
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