| 摘要 |
PURPOSE: A soundproof structure is provided to effectively prevent construction costs and weight from being increased, and to prevent crashing sound and noise from being transferred. CONSTITUTION: A soundproof structure comprises a plate(130) and noise reducing protrusions(140). The plate is installed between a lower slab and an upper slab. The noise reducing protrusions are installed on the bottom surface of the plate to be contacted with the top surface of the lower slab. The edge distribution of the noise reducing protrusions is denser than the center distribution. |
