…However, from around this time, truss structures developed more in America than in Europe, and with the spread of steel materials in the 19th century, many truss bridges were built all over the country. At that time, patents for the frame shapes were applied for one after another, and some truss bridges named after their inventors, such as the Howe truss shown in the figure, the Pratt truss, and the Warren truss, are still in use today. However, over time, unnecessarily complex frame structures disappeared, and simple, light shapes remained. … *Some of the terminology that mentions "Howe truss" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…しかしこのころからヨーロッパよりむしろアメリカにおいてトラス構造は発展を遂げ,19世紀にかけての鉄鋼材料の普及と相まって,各地に多くのトラス橋がつくられた。当時骨組みの形に関する特許が次々と申請され,図に示すハウトラスHowe truss,プラットトラスPratt truss,ワーレントラスWarren trussなど,考案者の名を冠したいくつかのものは現在でも使われている。しかし時代とともにいたずらに複雑な骨組みの構造は姿を消し,簡明で軽快な形状のものが残った。… ※「Howe truss」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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