[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

The introduction of advanced technology from western countries began at the latter half of 19th century resulted in the modernization of steel and iron bridge construction technology. Before the modernization, iron was never used for the structural purpose and fabrication of iron was unknown technology in Japan. The aim of this study is to clarify the process of of the evolution of bridge industry based on the establishment and development for the fabrication and construction of iron and steel bridges. The period to be examined in this paper is about 70 years from the middle of 19th century.

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

Before developing the machine construction, construction works depended on humanpower. The “Songs of labor” was indispensable to achieve simple and hard
construction works. This paper studies the history of ramming which is the basic and important process for levee constructions from the “Song of labor”, or, “Pontsuki song” points of view. Ramming instruments had been heavier after
improvements, therefore many people needed to ram together. According to that, the songs of labor had also changed. Many labor songs has disappeared nowadays, but some songs such as “Tankai-bushi” and “Hanagasa-ondo” has become local folk songs and been sung by many people even now. In this study we collect 70 labor songs used all through Japan for levee construction, clear the relations between the distribution of labor songs and construction methods, and discuss the value of the “songs of labor”.

View full abstract

[in Japanese]

View full abstract

The flood of a seasonal rain flont occured in July 1953 (Shohwa28). After that, the flood of tyhoon No.13 occured in September 1953 (shohwa 28). These are the flood of old and heavy damage disaster. The hydrological data remain in these flood respectively. The rainfall of seasonal rain flont visited in the north part of Wakayama prefecture from the night of July 17 to the morning of July 18. Its 24 hour rainfall was 400-500mm, and each river increased instantly in water volume. The highest water level recorded 6.00m July 18 at Funato. The Typhoon No.13 was the typical going north and rainy typhoon. It brought heavy rainfall in each of Kinki area. The typhoon did great damage in Wakayama prefecture. The sufferer was 47, 055 persons. The highest water level recorded 6.68m at Funato.

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract

[in Japanese]

View full abstract