| 摘要 |
PROBLEM TO BE SOLVED: To provide an impact test device for a guard structure capable of applying an impact force to the guard structure repeatedly and with excellent reproducibility. SOLUTION: An inclined path 8 is a corrugated steel plate having a guiding part 8a guiding a falling article 3 toward the guard structure 2. The guiding part 8a is a groove specifying the falling path of the falling article 3 to a prescribed path, and guides this falling article 3 so that it touches rolling along the upper corner of this groove in the state that the falling article 3 is supported at two points. As a result, a friction force acting on the falling particle 3 is roughly fixed, and the injection velocity of the falling article 3 immediately before it collides with the guard structure 2 is also roughly fixed. Since the falling direction of the falling article 3 can be controlled until immediately before the collision, the impact force of nearly uniform strength is repeatedly applied on a prescribed position of the guard structure 3, and the performance and behavior of the guard structure 2 can be objectively evaluated.
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