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■■■■■■■■■■■■■■■■■■■ 川崎製鉄技報 KAWASAKI STEEL GIHO Vol.4 (1972) No.2 ■■■■■■■■■■■■■■■■■■■ |
| 山留め工に関する実験研究 Experimental Study on Sheeting Material and Measurement of Earth Pressures 近藤 伸治(Shinji Kondo) 斎藤 恂(Makoto Saito) 村木 幸春(Yukiharu Muraki) |
| 要旨 : 川崎製鉄（株）では大型Ｈ形鋼の生産を開始したのに伴ない，山留め材の分野へ進出した。一方，山留め工には種々未解決の問題点があるが，十分解明されていない。そこで，山留め壁に作用する土圧の測定，山留め材の強度など一連の実験を実施した。土圧測定の結果，従来の土圧分布は十分安全であることを確認したが，土圧の測定方法など改良する点もある。山留め材の強度試験ではおおむね良好な結果が得られたが，許容応力を下回る値もあるので，実際の設計では安全率に若干余裕を持つ必要があろう。 |
| Synopsis : Since Kawasaki Steel Corporation recently launched into the production of large H-shapes and steel sheet piling, the said products have been enjoying a steadily increasing share in the sheeting materials market. However, as the sheeting engineering belongs to a comparatively late development, it has various unknown factors yet to be clarified. Therefore, a series of tests were conducted by the authors to measure the earth pressure against the sheeting wall as well as to measure the strength of sheeting materials. The test result of earth pressure measurement confirmed that the earth pressure distribution according to the conventional concept was safe enough, but it was found that the measurement method itself had room for further improvement. The strength of the sheeting materials was observed to be generally favorable. However, considering that the test sometimes showed a value below a permissible stress, it would be advisable in case of actual designing to allow a sufficient margin to the safety ratio. |
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