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GB/T 31004.2-2014 English PDF

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GB/T 31004.2-2014: Acoustics -- Measurement of sound insulation in buildings and of building elements using sound intensity -- Part 2: Field measurements
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Basic data

Standard ID GB/T 31004.2-2014 (GB/T31004.2-2014)
Description (Translated English) Acoustics -- Measurement of sound insulation in buildings and of building elements using sound intensity -- Part 2: Field measurements
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard A59
Classification of International Standard 17.140
Word Count Estimation 24,261
Date of Issue 9/3/2014
Date of Implementation 2/1/2015
Quoted Standard GB/T 15173-2010; GB/T 17561-1998; GB/T 19889.3-2005; GB/T 19889.4-2005; GB/T 19889.10-2006; ISO 717-1-1996
Adopted Standard ISO 15186-2-2003, IDT
Regulation (derived from) People's Republic of China Announcement of Newly Approved National Standards No. 21 of 2014
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This Standard specifies the method of in situ measurements using sound intensity walls, floors, doors, windows and small building elements sound insulation performance. The method is applicable to the case of the presence of flanking transmission field me

GB/T 31004.2-2014: Acoustics -- Measurement of sound insulation in buildings and of building elements using sound intensity -- Part 2: Field measurements


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. Acoustics Measurement of sound insulation in buildings and of building elements using sound intensity Part 2. Field measurements ICS 17.140 A59 National Standards of People's Republic of China Building acoustics and sound insulation of building elements sound intensity measurement Part 2. Field measurements buildingelementsusingsoundintensity-Part 2. Fieldmeasurements (ISO 15186-2.2003, IDT) Issued on. 2014-09-03 2015-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 1.1 Overview 1 1.2 Accuracy 1 2 Normative references 1 3 Terms and definitions 2 4 measuring device 6 4.1 Overview 6 4.2 Calibration 6 5 Test arrangement 6 5.1 select the source chamber and the receiving chamber 6 5.2 Installation conditions 7 Step 7 6 Test 6.1 Overview 7 Generating 6.2 sound field 7 6.3 sound average source room level measurement 7 6.4 receiving chamber preliminary testing the suitability of 7 The average sound intensity level measurements 7 6.5 receiving chamber side Over 6.6 sub-surface and multi-position measurements integrated speaker 10 6.7 Background noise 11 6.8 Measurement frequency range 11 Measuring 6.9 magnitude 11 7 Expression of results 11 8 11 test reports Appendix A (normative) correction term Kc 13 Accuracy Annex B (informative) Measurement estimates and deviations 14 Annex C (informative) Measurement of flanking transmission and its impact 17 References 20

Foreword

GB/T 31004 "Building acoustics and sound insulation of building elements sound intensity measurement" is divided into the following sections. --- Part 1. Laboratory measurements; --- Part 2. Field measurements; --- Part 3. Laboratory measurements of low frequencies. This section GB/T Part of 231,004. This section drafted in accordance with GB/T 1.1-2009 given rules. This section uses the translation method identical with 15186-2 ISO . section 2003 "Building acoustics and sound insulation of building elements sound intensity measurement 2 Score. field measurement. " This section proposed by the Chinese Academy of Sciences. The acoustics in part by the National Standardization Technical Committee (SAC/TC17) centralized. This section is drafted. South China University of Technology, China Academy of Building Research, Chinese Academy of Sciences Institute of Acoustics, Yunnan Institute. The main drafters of this section. Zhe Zhao Yue, Wu Shuo Yin, Cai Yang raw, Sun Haitao, Tan Hua, Lv Yadong, Liubi Long, Li Jiaquan. Building acoustics and sound insulation of building elements sound intensity measurement Part 2. Field measurements

1 Scope

1.1 Overview GB/T 31004 provisions of this part of the Situ Measurement of Sound Intensity walls, floors, doors, windows and small building elements sound insulation performance. The method is applicable to the case of the presence of flanking transmission field measurements can provide sound power data for diagnostic analysis of flanking transmission or measure The amount of lateral acoustic parameters. GB/T 31004.1 for no or only minimal flanking transmission of laboratory measurements. This part can be used is not satisfied GB/T 31004.1 requirements for laboratory measurements. GB/T 31004.3 for low frequency measurements under laboratory conditions. This section also describes the impact of flanking transmission using the prescribed method of measurement of sound insulation, as well as how to measure sound intensity. --- Insulation of a building element of field measurements and laboratory measurements suppressed flanking transmission (ie. GB/T 19889.3) comparison; --- Determining the contribution of each part of the sound insulation of building elements; --- Measuring one or more lateral sound propagation path of sound insulation (to validate predictive models, such as. EN12354-1). The amount of airborne sound insulation values \u200b\u200bgiven in this method and frequency. These values \u200b\u200bcan be converted into a single value according to GB/T 50121-2005 Volume, sound insulation performance of buildings and building components were evaluated. 1.2 Accuracy When each individual measuring small or large building components, reproducibility of the method and GB/T 19889.10-2006 and GB/T 19889.4-2005 same, or even better than both. Note 1. If you are using acoustic parameters specified in this method and the results measured by GB/T 19889 stipulated traditional reverberation chamber method of comparison, in both parties should Between law introducing a correction term to reflect the deviation between the two methods. That is given in Appendix A. Note 2. The accuracy of this part and its relationship with the acoustic parameters measured according to GB/T 19889.3-2005 and GB/T 19889.4-2005 and other methods It is given in Appendix B. Note 3. flanking transmission are discussed in Appendix C.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 15173-2010 electric acoustic sound calibrator (IEC 60942.2003, IDT) GB/T 17561-1998 sound intensity measuring instrument with measurement of sound pressure microphone (IEC 61043.1993, IDT) GB/T 19889.3-2005 Acoustics Measurement of sound insulation buildings and building elements - Part 3. airborne sound insulation of building elements experiment Chamber measurements (ISO 140-3.1995, IDT) GB/T 19889.4-2005 Acoustics Measurement of sound insulation buildings and building elements - Part 4. airborne sound insulation between rooms site Measurement (ISO 140-4.1998, IDT) GB/T 19889.10-2006 buildings and building elements Acoustics Measurement of sound insulation - Part 10. Small airborne sound insulation of building elements Laboratory measurements (ISO 140-10.1991, IDT) ISO 717-1.1996 Acoustics Determination of sound construction and building elements Part 1. Airborne sound insulation (Acoustics-Rating

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