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Reliability improvement and application scope expansion in the laboratory measurement of sound insulation of building elements

Research Project

Project/Area Number 21H01488
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 23020:Architectural environment and building equipment-related
Research InstitutionThe University of Tokyo

Principal Investigator

Sakuma Tetsuya  東京大学, 大学院工学系研究科(工学部), 教授 (80282995)

Co-Investigator(Kenkyū-buntansha) 井上 尚久  九州大学, 芸術工学研究院, 助教 (00755803)
西沢 啓子  地方独立行政法人東京都立産業技術研究センター, 研究開発本部物理応用技術部光音技術グループ, 副主任研究員 (90570416)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2023: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2022: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2021: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
Keywords建築環境・設備 / 音・振動環境 / 遮音 / 数値解析 / 音響計測
Outline of Research at the Start

建築部材の遮音性能を表す音響透過損失は、建築物の遮音設計の基礎となる物理量であり、長年世界各国で性能評価に用いられ、法制度に基づく遮音構造認定にも関わることから、測定の信頼性が社会的に極めて重要となる。本研究では、異なるタイプの試験室を対象として実験・数値解析を行い、測定誤差の発生原因を解明し、正確性・再現性を高めるとともに、従来は測定不能であった100Hz以下の低周波音や遮音性能の低い材料に対する新たな測定法を提案する。

Outline of Final Research Achievements

Regarding the laboratory measurement method of the sound insulation performance of building materials, we first verified the measurement accuracy of sound transmission loss through test measurements and numerical analysis on reference samples, and clarified the influence of various factors in the measurement procedure and test room. Second, we incorporated a new measurement procedure for the low frequency range below 100 Hz, and verified the possibility of expanding the applicable range. Although a slight improvement in accuracy appeared under certain conditions, sufficient effect was not observed overall. Third, with the goal of improving measurement accuracy for samples with low sound insulation properties, we verified the possibility of measurement using small-area samples. As a result, It was found that depending on the positional relationship between the sound source and the sample, accuracy may be slightly improved compared to full-surface samples.

Academic Significance and Societal Importance of the Research Achievements

建築部材の遮音性能を表す音響透過損失の測定は、建築物の音環境設計や性能評価の根幹となるため信頼性の向上が求められ、特に近年は低周波音問題の増大に伴い、国内外規格の測定法の適用範囲を100Hz以下に拡大することが急務となっている。本研究では、従来法の誤差を定量的に明らかにした上で、新たな測定法を試行し、十分な改善効果は得られなかったものの、測定法の更なる改良の方向性が示された。また、連結試験室まで含めた音響透過損失測定法の数値モデルを構築し、全周波数帯域で解析を実現したことにより、遮音性能予測の実務的利用に近づいた。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (17 results)

All 2023 2022 2021

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (14 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results)

  • [Journal Article] NUMERICAL MODELING OF SOUND INSULATION MEASUREMENT FOR MEMBRANE MATERIALS IN RECTANGULAR TEST ROOMS2022

    • Author(s)
      西沢啓子, 井上尚久, 佐久間哲哉
    • Journal Title

      AIJ Journal of Technology and Design

      Volume: 28 Issue: 68 Pages: 251-254

    • DOI

      10.3130/aijt.28.251

    • NAID

      130008161938

    • ISSN
      1341-9463, 1881-8188
    • Year and Date
      2022-02-20
    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] An experimental study on the influence of incident characteristics on sound insulation between rooms: Study on the incident sound field in the insulation performance measurement for partition walls. Part 22022

    • Author(s)
      Aida Yu、Inoue Naohisa、Sakuma Tetsuya
    • Journal Title

      JAPAN ARCHITECTURAL REVIEW

      Volume: 5 Issue: 4 Pages: 494-506

    • DOI

      10.1002/2475-8876.12276

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Validation of the low-frequency procedure for field measurement of facade sound insulation2021

    • Author(s)
      J. Liu, N. Inoue, T. Sakuma
    • Journal Title

      Buildings

      Volume: Vol.11 Issue: 11 Pages: 1-15

    • DOI

      10.3390/buildings11110547

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] FMBEM simulation of the laboratory measurement of sound transmission loss in rectangular test rooms2023

    • Author(s)
      K. Nishizawa, N. Inoue, T. Sakuma
    • Organizer
      Inter-Noise 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] A basic study on laboratory measurement of oblique-incidence sound transmission loss of building elements2023

    • Author(s)
      Y. Yamasaki, H. Tanaka, K. Masuda, N. Inoue, T. Sakuma
    • Organizer
      Inter-Noise 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 残響室における壁体の音響透過損失測定の数値シミュレーション2023

    • Author(s)
      會田祐, 井上尚久, 佐久間哲哉
    • Organizer
      日本建築学会大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 斜入射音響透過損失の実験室測定における音源条件に関する数値解析的検討2023

    • Author(s)
      山崎泰知, 田中ひかり, 増田 潔, 井上尚久, 佐久間哲哉
    • Organizer
      日本音響学会秋季研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 斜入射音響透過損失の実験室測定におけるニッシェ深さに関する数値解析的検討2023

    • Author(s)
      山崎泰知, 田中ひかり, 増田 潔, 井上尚久, 佐久間哲哉
    • Organizer
      日本騒音制御工学会秋季研究発表会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 矩形試験室における低周波域の音響透過損失測定に関する実験的検討2023

    • Author(s)
      西沢啓子, 井上尚久, 佐久間哲哉
    • Organizer
      日本音響学会建築音響研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 建築部材の斜入射音響透過損失の実験室測定に関する基礎的検討2023

    • Author(s)
      山崎泰知, 田中ひかり, 増田潔, 井上尚久, 佐久間哲哉
    • Organizer
      日本音響学会建築音響研究会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 外周壁から室内への低音域音響透過に関する数値解析的検討2023

    • Author(s)
      劉金雨, 井上尚久, 佐久間哲哉
    • Organizer
      日本音響学会春季研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 矩形試験室における低周波域の音響透過損失測定に関する実験的検討2023

    • Author(s)
      西沢啓子, 井上尚久, 佐久間哲哉
    • Organizer
      日本音響学会春季研究発表会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Experimental study on vibration response of wooden house facade to low-frequency outdoor sound2022

    • Author(s)
      J. Liu, N. Inoue, T. Sakuma
    • Organizer
      Inter-Noise 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 残響室における壁体の音響透過損失測定の数値シミュレーション2022

    • Author(s)
      會田祐, 井上尚久, 佐久間哲哉
    • Organizer
      日本建築学会第81回音シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 壁体の音響透過損失測定のニッシェ効果にする数値シミュレーション2022

    • Author(s)
      井上尚久, 佐久間哲哉
    • Organizer
      日本建築学会第81回音シンポジウム
    • Related Report
      2022 Annual Research Report
  • [Presentation] 直方体室の入射指向性に基づく音響透過損失の重付き平均に関する検討2021

    • Author(s)
      山崎泰知, 井上尚久, 佐久間哲哉
    • Organizer
      日本建築学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 矩形試験室における音響透過損失測定法に関する数値解析的検討2021

    • Author(s)
      西沢啓子, 井上尚久, 佐久間哲哉
    • Organizer
      日本騒音制御工学会秋季研究発表会
    • Related Report
      2021 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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