• Title/Summary/Keyword: Floor Impact noise

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Characteristics of Floor Impact Noise Insulation for No Hanger Ceiling Structure in Apartment Building (공동주택 무달대 천장의 바닥충격음 차단 특성)

  • Park, Hong-Gun;Mun, Dae-Ho
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2014.10a
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    • pp.208-213
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    • 2014

  • 공동주택의 천장구조는 바닥충격음을 변화시키는 영향요소중의 하나이다. 천장구조의 진동응답 특성이 바닥충격음에 영향을 주는 요소를 확인하기 위해 천장구조의 달대를 제거하여 콘크리트 슬래브의 진동이 천장구조에 전달되지 않는 무달대 천장구조를 개발하였다. 달대가 시공된 일반 천장구조와 대비하여 무달대 천장구조의 천장판 가속도와 바닥충격음 레벨을 비교하였다. 무달대 천장구조를 사용함으로서 콘크리트 슬래브의 진동이 천장구조에 전달되는 것을 절연되어 천장구조의 진동응답 증폭을 저감시킬 수 있었으며, 저주파 대역의 바닥 충격음 증폭 또한 저감시킬 수 있었다. 일반 천장구조는 100 Hz 이하에서 천장구조의 진동응답이 증폭되어 저주파 대역 바닥충격음이 증폭되었다.

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A Study on Determination of Damping Layer Thickness to Reduce Heavy Impact Noise in Apartment Building Floors (공동주택 층간 중량충격소음의 효율적 저감을 위한 바닥구조 감쇠층 두께 선정에 관한 연구)

  • Shin, Yun-Ho;Kim, Kwang-Joon;Kim, Min-Bae;Nam, Dae-Ho
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2005.11a
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    • pp.936-941
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    • 2005

  • Apartment building floor with a damping layer can be modeled as a sandwich plate. In order to reduce low frequency noise more efficiently due to heavy impact on such a floor, thickness of the damping layer needs to be optimized at the design stage. Modal loss factors are determined in this paper by RKU equation which is popular In sandwich plate theories. Optimum damping layer thickness determined at each mode is weighted so that several modes in the frequency range of interest can be included in a more systematic way. Furthermore, to reflect frequency-dependent characteristics of complex stiffness of the damping layer, an iteration method is proposed in finding modal frequencies.

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A Study on the Dynamic Properties by Loading Time of Floor Impact Noise Insulation Materials (바닥충격음 완충재의 재하시간에 따른 동적 특성 연구)

  • Kim, Heung-Sik;Jin, Pil-Hwa;Joo, Si-Woong;Jung, Sung-Won
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2005.11a
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    • pp.942-945
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    • 2005

  • The purpose of this study is to suggest a fundamental data for change of dynamic properties according to the loading time of resilient materials. 18 kinds of resilient materials included 4 representative types were measured at the load time of 24hours and 2hours by the method of Korea standard (KS F 2868) measuring the dynamic stiffness and the loss factor of materials under floating floors. As a result, the dynamic stiffness was increased rapidly in case of expandable polystyrene and rubber materials according to the load time, especially before 2 hours. The loss factor was represented that rubber materials with high elasticity are high, and expandable polystyrene, polyester, poly ethylene materials with low elasticity are low.

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Modeling and Performance Evaluation of Muti-layered Composite Floor Plates with Holes (천공 다층 복합 바닥재의 모델링 및 성능 평가)

  • Yoo, Hong-Hee;Lee, Chang-Guen;Yoo, Hong-Geol;Ju, Young-Jun;Cho, Jung-Eun
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2002.11a
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    • pp.367.1-367
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    • 2002

  • Recently, the noise environmental issue in compound residential areas like apartments becomes a very critical factor fer the building designers. In order to satisfy the customer need to live in a quiet environment, several interior structures for buildings are being introduced. The multi-layered composite floor plate is one of them. This structure is designed to prevent the noise generated by an object collision. (omitted)

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