• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2005.11a
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• pp.359-362
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• 2005

Road traffic noise level and railway noise level are important factors on apartment inhabitant's comforts. The measurement methods which noted by Ministry of Construction & Transportation(MOCT) and Ministry of Environment(ME) are used for measurement of exterior noise at apartment houses. But these methods are out of date because the height of apartment houses have increased dramatically and owing to the sampling methods of the measurement time interval, rating values are induced differently due to sampling methods. In this study, the sound level of each floor of apartment houses is measured and compared. And rating value due to sampling methods are compared. As a result, the KS outline of 'Field Measurement of Exterior Noise at Apartment Housess' is suggested.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2014.10a
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• pp.704-709
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• 2014

본 연구는 현재 사회문제화 되고 있는 층간소음 피해 실태조사 분석을 통하여 적용 가능한 층간소음 분쟁의 예방을 위한 효율적인 관리시스템을 개발 적용하였다. 설문조사 분석결과, 층간소음의 주요 발생 원인으로 아이들 뛰는 소음과 어른 걷는 소음이 55% ~ 75%로 가장 심각한 소음원으로 나타났으며, 소음 피해시간대는 저녁(18시~22시) 시간대는 50% ~ 65%로 가장 높게 나타났으며, 야간(22시~ 06시) 시간대는 26% ~ 45%범위에 있는 것으로 분석되었다. 층간소음관리시스템 적용 전 후의 민원저감효과 분석결과, 전라도 광주는 100%, 대구시는 87.5%, 서울의 경우는 83%, 경기도는 71% 순으로 나타나, 평균 약 85% 이상의 민원 저감효과가 있는 것으로 나타났다. 층간소음관리시스템 적용 전 후의 아파트 가격 변화 분석결과, 적용된 아파트의 경우는 평균 17.23백만원 상승한 반면, 미적용된 아파트는 0.55백만원 하락한 것으로 평가되었다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2014.10a
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• pp.693-697
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• 2014

본 연구는 민원인(아래층)과 피민원인(윗층)간 전문상담사의 중재를 통해 층간소음 문제를 해결하는 층간소음 현장관리시스템의 실효성을 검증하였다. 민원인(아래층)과 피민원인(위층)의 층간소음 피해경향을 분석한 결과, 4,087건 중 80%에 해당하는 3,254건의 민원인들은 층간소음 발생장소를 바로 윗층을 지목하는 것으로 나타났고, 반면에 15%에 해당하는 피민원인들(윗층)은 피해를 받는 원인이 소음이 아니라 피민원인의 전화나 방문 등을 통한 잦은 항의를 지적하는 것으로 분석되었다. 1,304건의 현장 방문 민원건수 중 80%에 해당하는 1,050건을 대상으로 현장방문 컨설팅 전 후의 층간소음 저감 등 만족도 조사결과, 약 683건에 해당하는 65%정도의 민원인은 층간소음 현장관리시스템에 만족하고 있는 것으로 평가되었다.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2009.04a
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• pp.394-402
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• 2009

To investigate the heavy-weight impact noise of apartment houses, numerical analysis was performed. The analysis acoustic pressure consider acoustic mode by finite element method. The variables considered effecting on the acoustic pressure are the Acoustic mode, acoustic damping, and the impulse load. The heavy-weight impact noise is a changeable value in the room. Since the most part of the frequency component of heavy-weight impact noise has low frequency. The noise in low frequency is related to the vibration of structure, the reflection of acoustic wave caused by wall and the standing wave called by acoustic mode. The prediction by the numerical analysis was verified with test result of the heavy weight-impact noise at apartment houses.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2012.10a
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• pp.413-414
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• 2012

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2012.10a
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• pp.327-328
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• 2012

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2013.10a
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• pp.549-552
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• 2013

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2006.05a
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• pp.1243-1246
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• 2006

As remodeling market is growing and peoples' concern on health and well-being is getting high, there is a need to apply environmentally friendly approach to remodeling an apartment houses. But, in point of the impact noise concerned, the thickness of the concrete slab and the limited ceiling height of the remodelling houses are the main constraints to improve the impact noise performance. In order to investigate the effect of the impact noise isolation as structural treatments for the structural elements, heavy-weight impact noise and tapping noise were measured in an remodeling building. As a result, structural strengthening method by H-beam was successful to enhance the impact noise level at about 3 or 4 class by the sound classification system.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2009.11a
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• pp.35-39
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• 2009

Recently, the flat-plate structure is widely used because it has many advantages such as reduction of story height, long span etc than the RC rahmen structure. Furthermore, application of the flat-plate is on the increase because of flexible plan unlike wall structure. Long span have been at a disadvantage for vibration serviceability evaluation, however studies about vertical direction vibration of flat-plate structure has not been carried out. This study analysis the characteristics according to slab structure to make an experiment on vibration and floor impact noise for the flat-plate structure in construction performance laboratory in Kolon E&C R&D center, the flat-plate structure applied to the post-tension method, and the wall structure in apartment houses.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2014.10a
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• pp.197-202
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• 2014

Floor Impact Noise is a structure-borne noise which is mainly caused by vibration of concrete slabs. The majority of previous studies have focused on investigating performance of absorbing sheets on the reduction of floor impact noise. But absorbing sheets do not efficiently reduce heavy-weight floor impact noise level because it cannot absorb slab vibration, which is the fundamental noise source. In this study, double-floor system was developed in order to reduce floor impact noise level in residual buildings. This floor system reduces heavy-weight impact noise level by reducing vibration response at the center of slab, which has maximum amplitude in the 1st vibration mode. In order to identify the performance of the double-floor system, experiments were planned. Primary test parameters are span of double floor, arrangement and types of absorbing sheets.