1 0 0 0 OA THE JAPAN MAIL米英橋梁論争 (2)
- 著者
- 月岡 康一 小西 純一
- 出版者
- Japan Society of Civil Engineers
- 雑誌
- 土木史研究 (ISSN:09167293)
- 巻号頁・発行日
- vol.14, pp.191-197, 1994-06-09 (Released:2010-06-15)
- 参考文献数
- 10
本論は、土木史研究、第13号 (93) 掲載の「THE JAPAN MAIL米英橋梁論争」の続編として、本論争中からNOT A BRIDGE BUILDERの手紙を取り上げたものである。この手紙は、Waddellの著書を高く評価したThe Japan Mail紙の書評を受けて、NOT A BRIDGE BUILERという匿名で同誌のCorrespondence欄に投稿された、Waddellに対する反論文である。これは、約半年間に渡るMail紙上の米英橋梁論争の火蓋を切るという、重要な役割を果たした。また、多方面から数多くの論争項目を取り上げて、以後の論争のベースとなった点でも重要である。以下では、まず手紙の概要を原文に沿って招介し、続いて主な論争項目をリスト・アップして、Waddellの主張とNOT A BRIDGE BUILDERの反論を比較・整理した。最後に、本論争における、この手紙の位置付けと評価について検討した。
1 0 0 0 OA 澱川橋梁の設計について
- 著者
- 月岡 康一 小西 純一 和田 林道宜
- 出版者
- Japan Society of Civil Engineers
- 雑誌
- 土木史研究 (ISSN:09167293)
- 巻号頁・発行日
- vol.12, pp.197-201, 1992-06-05 (Released:2010-06-15)
- 参考文献数
- 10
Yodogawa bridge is rivet-connected Petited type truss bridge carrying double railway line with single span of 540ft, truss height 80ft and weighted 1, 810ton. Here, starting from historical background, basic shape (span, height), weight and design loads are compared with other railway truss bridge for the understanding of general feature of this bridge.On 1927, Yodogawa bridge was planned to cross the Uji river in the establishment of new railway line which would connect 2 old capitals Kyoto and Nara by the shortest route. For this crossing, initially, the combination of popular 70ft&40ft-span bridges is proposed, which is rejected by the army because the piers of the bridges interrupt the practice in the riverside. To solve this problem, single bridge spanning 540ft was proposed, which was almost double the maximum span of 300ft-standard bridge designed by T. Cooper of U. S.Each of the design loads (Live, Impact and Wind) applied on this bridge are compared with the corresponding loads specified in the present Japanese standard. The Combined design load-value of the most important load combination case (Dead+Live+Impact Loads) is proved to be appropriate even from the standpoint of present load conditions.After the detail inspection and planning, repair work mainly on the shoe was performed in 1983. And now, Yodogawa bridge is expected to keep working as the longest railway truss bridge of single span in Japan.