建築物の鉛直方向の振動感覚に対する振動知覚時間の影響

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タイトル別名
  • INFLUENCE OF VIBRATION PERCEPTION TIME ON VERTICAL VIBRATION SENSE IN BUILDINGS
  • ケンチクブツ ノ エンチョク ホウコウ ノ シンドウ カンカク ニ タイスル シンドウ チカク ジカン ノ エイキョウ

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<p> Various studies on both vertical and horizontal vibration have been reported on the effect of vibration duration on vibration sensation both in Japan and overseas.</p><p> However, almost reports are targeted at vibration generation times of about 30 seconds. As a result, the time correction term is 20 log10 (T1/4) and the index is constant. However, in an actual living space, the vibration generation time of about 30 seconds is short and occurs for a long time.</p><p> In addition, since human vibration sensation is highly dependent on the time to perceive vibration, it is considered necessary to study when the time to perceive vibration is extended for a long time.</p><p> In this report, vibration sensation evaluation experiments were conducted for vertical vibrations of buildings using internal vibration sources by the rubber ball and external vibration sources by traffic. We focused on the number of vibrations, the duration of vibration, and the perception time of vibration, and examined the evaluation methods for magnitude and discomfort.</p><p> As a result, the following knowledge was obtained.</p><p> (1) Magnitude scale corresponds to LVmax (10ms) even if the number of impacts increases.</p><p> (2) In the case of impact vibration, discomfort scale increases exponentially with increasing number of impacts.</p><p> (3) Discomfort scale is improved by setting the vibration perception time as the evaluation range.</p><p> (4) The integral dependence of discomfort scale becomes dull as the sensory amount corrected for time changes as the vibration perception time increases.</p><p> (5) From the result of (4), discomfort scale corresponds to LVeq, h, Th + kv*10log10Th.</p><p> However, since this paper was experimentally studied, the evaluation scale and evaluation method corresponding to the actual resident reaction will be left as a future issue. In addition, since the sensory correction coefficient k is supposed to change continuously instead of changing in a stepwise manner, a method of evaluating it as a continuous function will be a future subject.</p>

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