Title:
METHOD FOR DETERMINING MODULUS OF ELASTICITY OF MOORING MECHANISM IN FLAP GATE TYPE BREAKWATER
Document Type and Number:
WIPO Patent Application WO/2011/065085
Kind Code:
A1
Abstract:
A mooring mechanism is intended to be miniaturized. For this purpose, disclosed is a method comprising determining the modulus of elasticity of the mooring mechanism (11) in a flap gate type breakwater (1) wherein a door body (2) turns up due to buoyancy, this door body (2) being such that the gap at the tip thereof is less than 250% of the gap between adjacent door body blocks (B). The relationship between X and Y is represented by Y = 3.74E - 0.6 × X-1.485, where X is an allowable swing angle of the door body (2), this allowable swing angle being the swing amplitude of the door body tip with respect the length of the door body (2), and Y is a bearing ratio of the mooring mechanism, this bearing ratio being the ratio of a mooring force borne by the mooring mechanism to a wave force which acts on the door body due to waves. A design swing angle of the door body is set, which swings within a range where a mooring hook (15) of the mooring mechanism (11) does not disengage from a gate mooring section (2d) of the door body (2). In the equation given above, the aforementioned design swing angle of the door body is substituted as the allowable swing angle X, resulting in the bearing ratio Y of the mooring mechanism being obtained. The modulus of elasticity is determined in such a way that the bearing ratio Y thus obtained is taken as a design bearing ratio of the mooring mechanism. Since the modulus of elasticity of the mooring device can be determined in an optimal manner, miniaturization can be achieved.
Inventors:
KIMURA, Yuitirou (7-89 Nanko Kita 1-chome, Suminoe-ku, Osaka-sh, Osaka 59, 〒5598559, JP)
木村 雄一郎 (〒59 大阪府大阪市住之江区南港北１丁目７番８９号 日立造船株式会社内 Osaka, 〒5598559, JP)
木村 雄一郎 (〒59 大阪府大阪市住之江区南港北１丁目７番８９号 日立造船株式会社内 Osaka, 〒5598559, JP)
Application Number:
JP2010/065143
Publication Date:
June 03, 2011
Filing Date:
September 03, 2010
Export Citation:
Assignee:
HITACHI ZOSEN CORPORATION (7-89, Nanko Kita 1-chome Suminoe-ku, Osaka-sh, Osaka 59, 〒5598559, JP)
日立造船株式会社 (〒59 大阪府大阪市住之江区南港北１丁目７番８９号 Osaka, 〒5598559, JP)
KIMURA, Yuitirou (7-89 Nanko Kita 1-chome, Suminoe-ku, Osaka-sh, Osaka 59, 〒5598559, JP)
木村 雄一郎 (〒59 大阪府大阪市住之江区南港北１丁目７番８９号 日立造船株式会社内 Osaka, 〒5598559, JP)
日立造船株式会社 (〒59 大阪府大阪市住之江区南港北１丁目７番８９号 Osaka, 〒5598559, JP)
KIMURA, Yuitirou (7-89 Nanko Kita 1-chome, Suminoe-ku, Osaka-sh, Osaka 59, 〒5598559, JP)
木村 雄一郎 (〒59 大阪府大阪市住之江区南港北１丁目７番８９号 日立造船株式会社内 Osaka, 〒5598559, JP)
International Classes:
E02B7/40
Attorney, Agent or Firm:
MIZOGAMI, Tetsuya et al. (Hommachi-Ide Bldg. 2F, 1-10-4 Utsubo-Hommachi, Nishi-ku, Osaka-sh, Osaka 04, 〒5500004, JP)
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