| 摘要 |
PROBLEM TO BE SOLVED: To provide a steel frame structure such as a debris dam which can be set in a region where impact load such as debris flow can occur. SOLUTION: In assembly of a steel frame, box frames 6 each formed by bolting column members 1, 2, depth members 3, horizontal members 5, etc. to each other, are sequentially arranged in the vertical, horizontal and to-and-fro directions, as needed, and screen members 9 are arranged on front and rear surfaces of each box frame 6. Then a filling is filled in the steel frames to construct the steel frame structure such as the debris dam. Further a cushioning structure 18 is formed on a front side of the frame 6 forming a front surface (upstream surface) of the steel frame. The structure 18 is constructed by mounting a wooden panel 17 on the front surface of the steel frame in a manner being spaced from the same by spacers 15, and filling earth and sand in a gap between the wooden panel 17 and the steel frame front surface. The wooden panel is formed by piercing the plurality of adjacently arranged thinnings 16 by steel bars to connect the thinnings together in one body. The wooden panel 17 and the filled earth and sand effectively absorb the impact load caused by the debris flow, and therefore damage of the steel frame body is prevented. Thus the structure is applicable to the debris dam constructed in the region where the impact load such sa the debris flow can occur. COPYRIGHT: (C)2004,JPO
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