4pAA11. Impact force characteristics by footsteps and the vibration characteristics in housing floors.

Session: Thursday Afternoon, December 5

Time: 4:30

Author: Hideo Watanabe
Location: Tech. Res. Inst., Toda Corp., 315 Kaname, Tsukuba City, Ibaraki, Japan
Author: Sho Kimura
Location: Nihon Univ., 1-8-14, Kanda, Surugadai, Chiyodaku, Tokyo
Author: Katsuo Inoue
Location: Nihon Univ., 1-8-14, Kanda, Surugadai, Chiyodaku, Tokyo


Various experimental researches were conducted dealing with physical characteristics and sensation in order to be able to express quantitatively appropriate hardness in terms of comfortability in residential floors. From among these, the results of analyses of impact force time characteristics of a sole by footsteps and the production of a prototype impact source involving the impact force of the heel, which is a representative impact force generated by footsteps are indicated in this paper. Then, using the impact source to measure the amount of dynamic displacement in wooden floors of old construction and in the direct-pasted wood flooring commonly used in recent multifamily housing, the dynamic spring coefficient of traditional wood-construction floor structure, which had never before been clarified, was quantitatively determined.

ASA 132nd meeting - Hawaii, December 1996