| 摘要 |
<p>Disclosed is a panel floor structure provided with an upper surface member and a lower surface member which are disposed approximately parallel to each other with a predetermined gap formed in-between; and at least a pair of steel cores which connect the upper surface member and the lower surface member to each other, thereby forming space. At least one dimension is adjusted to meet the following requirements (A) and (B), said one dimension being one of the dimensions among the length, the width, and the plate thicknesses of said upper surface member, those of said lower surface member, the length and the width of said cores, and the spacing between said cores. (A) The characteristic frequency of an entire vibration system consisting of the upper surface member, the lower surface member, and the cores should be 15 Hz to 45 Hz. (B) The characteristic frequencies of partial vibration systems should each be 707 Hz to 20,000 Hz, said partial vibration systems being a vibration system consisting of the upper surface member, a vibration system consisting of the lower surface member, and a vibration system consisting of the cores.</p> |
