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바닥매트류 종류에 따른 바닥충격음 저감량 효과와 저감 인지 범위에 대한 평가
연준오,김경우,김명준 한국건축친환경설비학회 2021 한국건축친환경설비학회 논문집 Vol.15 No.6
The purpose of this study was to satisfy the extent to which the impact sound was reduced when the actual impact force (sound) was applied to the floor mats in various floor structures of apartment houses and that the impact sound was reduced in each of the 125 Hz and 250 Hz bands. It is an evaluation of whether you did it. It was found that PE floor mats have higher impact sound reduction performance than PU floor mats when actual impact force (rubber hole drop height 40 cm) from the upper part of the wet floor structure of apartment houses. In terms of single number quantities, a maximum impact sound reduction performance of 5 dB was found. Even in the semi-dry floor structure, it was found that PE floor mats secured a maximum of 3 dB of actual impact sound reduction performance. In the double-floor structure, the impact sound reduction performance was found to secure a maximum of 2 dB. As a result of evaluating the perception range (3 dB) after installing floor mats in the wet and semi-dry floor structures, it was found that when installing more than 20 mm of PE material, the residents have a range of 3 dB that can be perceived as ‘the impact sound has been reduced’. Overall, floor mats made of PE were found to have somewhat better performance than floor mats made of PU. In the case of floor mats (Case 11 ~ Case 18) combining various materials, it was found that the impact sound reduction performance recognition range of 3 dB was not secured in the upper part of the double floor structure.
공동주택 거주자 실충격력을 고려한 바닥 매트류의 충격음 저감량 평가
연준오,김경우,김흥식,김명준 한국건축친환경설비학회 2019 한국건축친환경설비학회 논문집 Vol.13 No.5
In this study, the real-impact force (height of drop of rubber ball 40 cm) reduction performance was evaluated in the reverberation chamber and in the 210 mm bare slab of the apartment house, depending on the application of the floor surface finishing material. There are a total of 20 types of mats made of single, composite materials. In addition, the impact sound was reduced by residents of apartment housings during installation of floor surface finishing materials, focusing on the 125 Hz and 250 Hz frequency bands. The reduction performance of about 10 dB in the PE structure was shown when applying a single structure of mats in the reverberation chamber. It was also shown that the reduction in noise perceived range is obtained from Case 6 to 9 (PE 20 mm ~ PE 50 mm), a floor surface finishing material consisting of PE. In the composite structure, it was shown that Case 2, 3, 4 (PE 20 mm + PU 10 mm, PE 10 mm + PU 20 mm, PE 20 mm + PU 30 mm) satisfies the range 3 dB of impact reduction. Impact sound reduction performance (height of drop of rubber ball 40 cm) at bare slab in apartment buildings was found to be over 7 dB in Case 9(PE 50 mm) in single structure. In addition, it was found that the impact sound recognition range of 3 dB is secured when applying the single structure of the floor surface finish in case 6, 7, 8, 9(PE 20 mm ~ PE 50 mm) and the composite structure Case 2, 3 (PE 20 mm + PU 10 mm, PE 10 mm + PU 20 mm).
연준오,구희모,이성찬,Yeon, Junoh,Goo, Heemo,Lee, Sungchan 한국음향학회 2018 韓國音響學會誌 Vol.37 No.5
상하층 간 공동주택의 바닥충격음 문제를 해결하기 위해 국토교통부에서는 바닥충격음 레벨에 영향을 미치는 완충재에 대한 물성 기준도 함께 고시하고 있다. 완충재에 대한 물성 기준중 가열전후 동탄성계수, 손실계수는 특히 바닥충격음과 가장 연관되어 있다. 따라서 본 연구에서는 기준에서 명시하고 있는 $70^{\circ}C$의 온도 조건을 기준으로 $10^{\circ}C$씩 증가시키고 $10^{\circ}C$씩 저감시켜 온도변화에 따른 동탄성계수 및 손실계수에 대하여 변화율을 검토하였다. 총 8가지 종류의 시료에 대하여 동탄성계수 및 손실계수 측정 방법은 펄스 가진법으로 수행되었으며 결과 산출방법은 감쇠 진동 파형을 이용한 시계열 해석법으로 산출하였다. In order to solve the floor impact sound problem in the upper and lower floors, the Ministry of Land, Transport and Maritime Affairs also notifies the physical properties of the resilient material affecting the floor impact sound level. The dynamic modulus of elasticity and the loss factor before and after heating are most related to the floor impact noise, especially for the cushioning material. Therefore, in this study, the rate of change with respect to the dynamic modulus and loss factor with temperature change was examined by increasing $10^{\circ}C$ by $10^{\circ}C$ from the temperature condition of $70^{\circ}C$ specified in the standard. The dynamic modulus of elasticity and the loss modulus were measured by using the pulse excitation method for eight kinds of samples. The calculation method was calculated by the time series analysis method using the damped vibration waveform.
연준오,문순성,김용희 한국건축친환경설비학회 2023 한국건축친환경설비학회 논문집 Vol.17 No.2
In this study analyzed the factors affecting the performance of floor impact sound in the Republic of Korea apartment house. In addition, the performance of Heavy-weight impact sound and Light-weight impact sound was analyzed according to the supply area among the analysis factors. Among the approximately 628 households surveyed, the ratio of 37 to 74 m2 was the highest at 40%. More than 99% of the architectural styles are wall structures apartments. In addition, the composition ratio of the type of room (living room and room) arranged in the front was high at about 44% in 4 Bays. Wooden flooring was found to be about 81% of the type of flooring installed on the finish mortar. In addition, in the case of the receive room ceiling structure, it was found that the well type sealing system was installed at a rate of about 75%. Among the analyzed apartment building elements, this paper examined the performance of reducing heavy-weight impact sound according to the supply area. As a result, depending on the supply area, the average single-number quality (SNQ) value was less than 50 dB, but many households exceeded the minimum standard of 50 dB. In the case of light-weight impact sound, it was found that most of the minimum standard 58 dB was met regardless of the supply area.