著者
冨田 隆太 阿部 今日子
出版者
一般社団法人 日本建築学会
雑誌
日本建築学会技術報告集 (ISSN:13419463)
巻号頁・発行日
vol.27, no.67, pp.1303-1308, 2021-10-20 (Released:2021-10-20)
参考文献数
14
被引用文献数
1

To prevent COVID-19, the apartment housing was filled with more people for a longer time while at home in Japan. These conditions are thought to have produced something close to the maximum noise load of the apartment housing. In order to better understand the reaction of the residents to this situation, we decided to conduct a questionnaire and collect data. As a result, compared to before stay home, the number of sounds that were heard and worrisome during stay home increased to 1.3 times. In addition, about 10% of the residents were involved in noise problems during stay home.
著者
冨田 隆太 阿部 今日子
出版者
日本建築学会
雑誌
日本建築学会環境系論文集 (ISSN:13480685)
巻号頁・発行日
vol.86, no.790, pp.873-882, 2021-12-01 (Released:2021-12-01)
参考文献数
23
被引用文献数
1

The "floor" that is in constant contact with people is important for users to spend comfortably and safely in the architectural space. Improving floor performance (safety and comfort) is considered to be an important issue for all generations, including children, adults and the elderly. The purpose of this study is to be safe and comfortable for children and the elderly, and to solve the problem of floor impact sound. It is "Development of tatami with consideration for sound insulation performance and safety and formulation of design guidelines". In this paper, we first focused on tatami as a basic study. We examined heavy-weight floor impact sound, the hardness at the time of a fall collision, and the hardness at the time of walking. In addition to commercially available straw tatami and building material tatami, five types of tatami mats focusing on vibration isolation were prototyped and experimentally examined. For reference, we also examined light-weight floor impact sound. As a result of this paper, the following findings were obtained. 1) Straw tatami and building material tatami had no effect on the heavy-weight floor impact sound level reduction in the 63 Hz band, and were about 0 to -1 dB. In tatami mats that was prototyped in this paper, considering the vibration isolation, we were able to achieve a performance improvement of 3 dB by reducing the heavy-weight floor impact sound level in the 63 Hz band. 2) Regarding the hardness at the time of a fall collision, straw tatami and building material tatami were 50 to 53 G. The prototype tatami mats had a large impact mitigation effect of 20 to 31 G. 3) Of the prototype tatami mats that were able to realize (1) and (2), T4 and T5 were also good for walking. 4) Regarding the four types of performance related to floor hardness, the relationship of quantitative evaluation of each performance was clarified. It turns out that none of the performances correspond linearly. It was suggested that it is necessary to examine each layer in the floor cross section and the combination of each layer for each performance. As described above, in this paper, it was found that the prototype tatami mat does not impair the walking feeling, and the effect can be obtained by the amount of reduction in heavy-weight floor impact sound level and the hardness at the time of a fall collision. In addition, the effectiveness of introducing such a vibration-proof structure into tatami mats was suggested.
著者
井上 勝夫 福島 寛和 冨田 隆太 橋本 修 吉村 純一
出版者
日本大学
雑誌
基盤研究(B)
巻号頁・発行日
2002

本研究は,集合住宅を対象として,以下に示す4項目について検討を行ったものである。(1)住宅購入予定者が住宅に要求する性能の調査(2)住宅広告に記載されている住宅性能項目と内容に関する調査(3)住宅販売に携わる営業担当者の住宅性能に関する知識及び説明方法に関する調査(4)消費者が理解し易い音環境性能(遮音性能)の表現方法に関する検討その結果,(1)については,1都3県の23物件,315人を対象とし、直接面接方式による調査を行なったところ,1位:音環境性能,2位:光環境性能,3位:耐震性能の結果を得,音環境性能に関する要求が最も高いことが判った。(2)については,732枚の集合住宅に関する広告を調査した結果,住宅性能に関する記載は全ての広告においてあるが,その記述方法・内容は定性的または建築仕様による表現が多く,性能を定量的かつ具体的に消費者が捕らえることができない状況にあることが判った。(3)については,マンション販売に携わる営業担当者の住宅性能に関する知識はかなり低く,消費者が彼らの説明によって性能を理解するのは難しい状況にあることが判った。よって,今後,営業担当者に対して住宅性能に関する徹底した教育を行う必要性を示した。(4)については,集合住宅の居住者に対し,遮音性能に関するアンケート調査結果(311票)から,遮音性能を消費者が理解しやすい生活実感として表現する方法・内容を検討し,その具体的内容を提案した。