Study on vibration sense evaluation of three-axis combining vibration in actual houses

This study examined a method for evaluating habitability based on vibration sensation in three-axis combining that propagate to the floor of actual houses. The vibration sources are external vibrations from bullet trains and road traffic. The vibration directions are vertical axis, fore-and-aft axis and lateral axis. In Japan, houses are sometimes built near roads or railways. Therefore, traffic vibrations may be felt inside the house. This can lead to complaints. According to a survey by the Ministry of Internal Affairs and Communications in Japan, 90% of complaints about vibration are sensory and psychological. Therefore, it is very important to consider a method for evaluating habitability based on vibration sensation. In Japan, JIS C1510 and AIJES-V0001 have evaluation methods for single-axis vibrations such as vertical and horizontal vibrations. However, there is no method for evaluating vibrations in more than one direction. ISO2631-1 describes an evaluation method for vibrations in more than one direction, but the authors' research has reported that the method in ISO2631-1 may be insufficient. In this paper, we report the results of vibration sensation evaluation experiments carried out using five actual houses, and the evaluation method for vibration in three-axis combining.