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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Launching gantry ： ウィキペディア英語版 Launching gantry A Launching gantry is an item of bridge construction equipment. It is used to install precast girders in highway and high speed railway bridge construction projects. There are three kinds of launching gantries. ==Honeycomb girder== The main girder is of welded plates in isoceles triangle section. Regular hexagonal honeycomb holes are cut in the inclined web plate for air currents to pass through. This reduces wind impact.〔http://launchinggantry.com/honeycomb-girder-launching-gantry/〕 Welded plate by plate,if there is a mistake welding occasionally, the welding surface will not lose stability easily. Since the honeycomb girder launching gantry was created in 1999,（ZZHZ） it is found that its applicable lifting weight is from 5t to 300t. Nowadays it is used in highway bridge construction projects 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Launching gantry」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.