| 摘要 |
PROBLEM TO BE SOLVED: To provide a vibration-proofing method of a structure floor capable of efficiently exhibiting a vibration-proofing effect by realizing oscillating offset using the phase difference over single exciting force and, at the same time, being carried out on the floor wherein any gap and uneven step do not occur. SOLUTION: The structure floor 1 is supported by combining the first propagation course 10 by a vibration-proof material 2 with the second propagation course 11 by a vibration-proof material 4 holding a mass body 3 in an intermediate section, the exciting force acting on the structure floor 1 is made to transfer to an under floor structure 5, the second propagation course 11 is constituted of a plurality of propagation courses 11 etc. respectively having different natural frequencies, and the vibration is negated by using the phase difference between a phase of vibration propagated to the under-floor structure 5 from the first propagation course 10 and a phase of vibration propagated to the under-floor structurre 5 from the second propagation course 11. COPYRIGHT: (C)2006,JPO&NCIPI
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