わが国における第二次世界大戦以前のコンクリートアーチ道路橋の変遷

抄録

In this study, the authors listed the concrete arch highway bridges that were built in Japan before World War II. And we classified them into the three types of arch bridges, single span, multi span deck types and through type, in addition, arranged chronologically and classified them into the areas, the structures, the designs and the designers. Next we analyzed characteristics of ages, areas, structures and designs of them. Based on this study, we found that those were built in Nagasaki, Kobe, Kyoto and Tokyo City in Meiji Era at first, Aichi and Ehime in Taisho Era, and next, those had made rapid progress though Reconstruction Program in Tokyo after Kanto-Earthquake and Urban Planning in Osaka City, and after that, the techniques of building spread in Kanto and Tohoku. And we made clear that most of spandrel-filled arch bridges were built below about 30m, and about 40 Melan-arches were built, and arch-rib structure as many as arch-ring structure were built, almost arches were built the fixed arch, most arcade-structure of arch-spandrel had been built for 10 years since 1927, and fixed arch-spandrel pediment changed to pasting stones then changed to concrete walls.