To provide a construction method of an offshore structure capable of safely and in a short time connecting a superstructure to a substructure arranged in an installing water area, and capable of more rapidly moving the superstructure in the vertical direction than a drift adjustment of a work pontoon by a ballast adjustment, without using a hanging facility such as a large-sized crane, etc., where the superstructure is assembled and integrated on land and transported by the work pontoon.SOLUTION: A construction method of an offshore structure lowers a superstructure 41 mounted on a work pontoon 1A onto a substructure 42 to join and integrate them by lowering a part of or all of the work pontoon 1A using the spud lifting operation for lifting/lowering spuds 20A, 20B of a deck lifting system provided on the work pontoon 1A.SELECTED DRAWING: Figure 1

    【課題】その目的は、陸上で組み上げられ一体化されて、作業台船で運搬された上部構造物を、大型のクレーンなどの吊り下げ設備を使用せずに、また、バラスト調整による作業台船の喫水調整よりも迅速に上下移動できて、短時間で安全に、上部構造物を設置水域に配置された下部構造物に接合できる洋上構造物の施工方法を提供する。【解決手段】作業台船1Aに備えられている甲板昇降式システムのスパッド20A、20Bを昇降させるスパッド昇降操作で作業台船1Aの一部または全部を降下させることにより、作業台船1Aに搭載されている上部構造物41を下部構造物42の上に降下させて、両者を接合して一体化する。【選択図】図1


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    Title :

    CONSTRUCTION METHOD OF OFFSHORE STRUCTURE AND WORK PONTOON


    Additional title:

    洋上構造物の施工方法及び作業台船


    Contributors:

    Publication date :

    2020-05-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS




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