Journal of the Korea institute for structural maintenance and inspection (한국구조물진단유지관리공학회 논문집)

Korea Institute for Structural Maintenance Inspection (한국구조물진단유지관리공학회)
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Heavy-weight Impact Sound Characteristics of Floor Structure of a Small-Sized Wall-Slab Apartment Building having Joist Slab

장선슬래브를 갖는 소형평형 벽식구조 아파트 바닥구조의 중량충격음 특성

  • 천영수 (한국토지주택공사 토지주택연구원)
  • Received : 2019.08.08
  • Accepted : 2019.09.05
  • Published : 2020.02.29
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Abstract

In the present paper, as a way of reducing heavyweight impact sounds, in particular, among floor impact sounds which have come to the forefront as a social issue recently, a floor joist slab is proposed that is expected to bring an effect of reducing heavyweight impact sounds through a shift in the natural frequency by installing a floor joist on a flat-type slab to increase the rigidity of the floor slab, differently from the existing method that increases the thickness of floor slab, and the heavyweight impact sound characteristics depending on the floor joist height and interval are interpretively analyzed. As a result of the analysis, though a trend is shown where the sound pressure level decreases as the slab thickness of floor joist increases, and as no difference is shown when thickness is above a certain value, it is thought that there is a threshold for the effect of an increase in floor thickness on blockage of heavyweight impact sounds. Also, as an increase in floor rigidity resulting from an increase in the floor joist height and a decrease in the interval does not lead to a consistent increase in the performance of blocking heavyweight impact sounds, it is thought that a different floor joist height and interval should be applied to each type of house to expect optimum performance of blocking heavyweight impact sounds, and an increase of 100mm in the floor joist height or a decrease of about 100mm in the interval is expected to bring an effect of reducing heavyweight impact sounds by about 1dB to 2dB.

이 논문에서는 최근 사회적인 이슈로 대두된 바닥충격음 중 특히 중량충격음을 저감시키기 위한 방법의 일환으로, 바닥슬래브의 두께를 증가시키는 기존의 방식과는 달리 평판형 슬래브에 장선을 설치하여 바닥슬래브의 강성을 증가시킴으로써 고유진동수의 이동을 통한 중량충격음의 저감 효과를 기대할 수 있는 장선바닥슬래브를 제안하고, 장선의 춤과 간격에 따른 중량충격음 특성을 해석적으로 분석하였다. 해석결과, 장선슬래브의 슬래브 두께가 증가할수록 음압레벨이 감소하는 경향을 나타내었으나 일정 두께 이상에서는 큰 차이를 보이지 않아 바닥두께 증가로 인한 중량충격음 차단 기대효과에는 임계치가 있을 것으로 판단된다. 또한 장선 춤의 증가와 간격 감소에 따른 바닥강성의 증가는 일관된 중량충격음 차단성능의 증가로 이어지지 않아 최적의 중량충격음 차단성능을 기대하기 위해서는 주택의 유형별로 각기 다른 장선 춤과 간격이 적용되어야 할 것으로 판단되며, 100mm 정도 장선 춤의 증가나 간격 감소로 약 1dB~2dB정도의 중량충격음 감소효과를 얻을 수 있을 것으로 기대된다.

Keywords

References

  1. Ministry of Land, Infrastructure and Transport (2015), Standard floor finishing and structures for interlayer noise prevention (p. 319), Governing City: Ministry of Land, Infrastructure and Transport.
  2. Jeon et al. (2010), A quantification model of overall dissatisfaction with indoor noise environment in residential buildings, Applied Acoustics, 71, 914-921 https://doi.org/10.1016/j.apacoust.2010.06.001
  3. Cha, S. (2014), The management system and effect of floor noise at apartment houses, In Joint Conference by Korean Society for Noise and Vibration Engineering.
  4. Lee, J. W., Park, H., Yun, H., Jung, D., Lee, K. M., and Kwon, M. (2017), Procedure of noise measurement method for noise standard and improvement plan, In Joint Conference by Korean Society for Noise and Vibration Engineering, 168-170.
  5. Park, S. H., and Lee, P. J. (2017), Effects of floor impact noise on psychophysiological responses, Building and Environment, 116, 174-181.
  6. Schiavi, A. (2018), Improvement of impact sound insulation: A constitutive model for floating floors, Applied Acoustics, 129, 64-71. https://doi.org/10.1016/j.apacoust.2017.07.013
  7. Martins, C., Santos, P., Almeida, P., Godinho, L., and Dias, A. (2015), Acoustic performance of timber and timber-concrete floors, Construction and Building Materials, 101, 684-691. https://doi.org/10.1016/j.conbuildmat.2015.10.142
  8. Faustino, J., Pereira, L., Soares, S., Cruz, D., Paiva, A., and Varum, H., et al. (2012), Impact sound insulation technique using corn cob particleboard, Construction and Building Materials, 37, 153-159. https://doi.org/10.1016/j.conbuildmat.2012.07.064
  9. D'alessandro, F., Asdrubali, F., and Baldinelli, G. (2014), Multiparametric characterization of a sustainable lightweight concrete containing polymers derived from electric wires, Construction and Building Materials, 68, 277-284. https://doi.org/10.1016/j.conbuildmat.2014.06.075
  10. Beak, G.O. et al. (2015), Analysis of Heavy-weight Floor Impact Noise and Vibration of Concrete Slabs in a Residential Building, Proceedings of The 2015 World Congress on Advances in Civil, Environmental, and Materials Research(ACEM15), Incheon, August.
  11. Lee, Y. J., and Jeong, Y. (2016), The objective and subjective evaluation of heavy-weight floor impact noise in box frame-type structures, Proceedings of the INTER-NOISE 2016, Hamburg, 6313-6317
  12. Bang, J. D. et al. (2013), An Investigation Study on the R&D Trends for Mitigation Technologies of Floor Impact Noise of Apartment House, Land and Housing Institute Report No.2013-15.
  13. Chun, Y.S. et al. (2015), Development of technologies for reducing floor impact noise in new residental apartments considering spatial characteristics, Land and Housing Institute, National Project Report(2nd year).
  14. Korea Standards Association (2012), F2810-2: 2012 (Field measurement of impact sound insulation of floors-Part 2: Method using standard heavy impact source). Seoul: Korea Standards Association.
  15. Korea Standards Association (2007), F2863-2: 2007 (Rating of floor impact sound insulation for impact source in buildings and of building elements-Part 2: Floor impact sound insulation against standard heavy impace source). Seoul: Korea Standards Association.
  16. LMS Virtual.Lab Acoustic software (2014), SIEMENS.