Accoustics—Measurement of sound insulation in buildings and of building elements—Part 3:Laboratory measurements of airborne sound insulation of building elements—Part 3:Laboratory measurements of airborne sound insulation of building elements
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National Standard of the People's Republic of China
GB/T 19889.3--2005/IS) 140-3.1995 Acoustics--McAsurcmcnt of sound insulation in buildings and of building elementsPart 3: Laboratory measurements of airborne sound insulation of building clenients(IS0 140-3:1995.IDT)
Published on September 9, 2005
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Administration of Standardization of the People's Republic of China
Implementation on April 1, 2006
GH/T 19889.3—2005/r5O 140-3:1995 Foreword
Regulations and referenced documents
Terms and definitions
Measurement and preparation
Test arrangements
Procedures and calculations
5.1 Generation of the source
5.2 Quantification of the average pressure level
Modeling
5.4 Reverberation measurement and estimation of the absorption yield 6. Sample calibration of the frequency-saving sound
Precision
Results
Test report
|tt||Appendix A (normative annex) Test system for the sealing of the installation agent (standard)
Measurement of the sound transmission components and the filling of the external wall replacement parts) with the sound transmission
Appendix C (normative annex)
Technical requirements and layout of the source...
C.1 Determine the technical requirements for the mutual position of the microphone and the sound field. 2 Select the suitable position and environment for the experiment to achieve the sound transmission quantity
Appendix 1 (Informative Appendix) Appendix F (Informative Appendix) E. General Rules Appendix F (Informative Appendix) Minimum Spacing F.3 Field Sampling Field Location F.5 Averaging Time F. Mixing Time Total Internal Number Measurement Guide for Low Throttle Measurement Appendix G (Informative Appendix) Format for Field Results Appendix H (Regulatory Appendix) t||Guidelines for the installation of double-layer lightweight partitions 10
G/T1988 Acoustic Building and Building Components Attached Measurements are divided into: Part 1: Determination, verification and application of data accuracy Part 3: Experimental measurement of airborne sound insulation of components Part 4: Laboratory measurement of airborne sound insulation between rooms Part 5: Laboratory measurement of airborne sound insulation of exterior wall components and exterior airborne sound insulation Part 7: Field measurement of floor impact sound insulation GB/T19889.3-2005/150 140-3;1995 Part 3: Experimental measurement of floor impact sound insulation Part 4: Laboratory measurement of airborne sound insulation between rooms Part 5: Laboratory measurement of airborne sound insulation of exterior wall components and exterior airborne sound insulation Part 7: Field measurement of floor impact sound insulation Part 7: Field measurement of floor impact sound insulation GB/T19889.3-2005/150 140-3;1995 Part 3: Experimental measurement of floor impact sound insulation Part 4: Laboratory measurement of airborne sound insulation of components between rooms Part 5: Laboratory measurement of airborne sound insulation of components between rooms Part 7: Field measurement of floor impact sound insulation Part 7: Field measurement of floor impact sound insulation Part 7: Experimental measurement of floor impact sound insulation Part 7: GB/T19889.3-2005/150 140-3;1995 Part 3: Experimental measurement of floor impact sound insulation ...
This part adopts 53:1551 Experimental results on the effectiveness and elasticity of micro-components Part 3 Test methods for air trapping of exterior building components and 50140-935/0 Noise control of building and structural elements Part 3 Practical measurement of air trapping of building components Supplement 1: Measurement of installation of double-layer lightweight panels with two walls (English version) This part has the following differences compared with [S01403:1995]: Except for the specific brand and model of the product mentioned in this part in Appendix 01-3, this part shall include the supplementary document 15 of 15140-3:93 adopted by 1S in 2001. 0140-3:1995/4m:1:2333 Academic buildings and building insulation measurement Part 3 Laboratory measurement of air trapped sound in building components Supplement 1: Double-layer lightweight mechanical installation of two-way measurement of the production of the production, the state is Appendix H. This part of the national standard requirements ISO141-3:1995 and IS0140-3:1995/Aul:2004, some of the requirements, the standard, the Chinese Academy of Sciences, the National Acoustic Standardization Technical Committee (SACTC17). This part of the main units: Tongji University, Chinese Academy of Building Sciences, Institute of Science, Taiyuan Academy of Sciences, the main authors: Ji Hong, Yuan Hua, Ya Le. 1 Fan string
0B/T19889.3—2005/1S0140-3:1995 Acoustic buildings and sound insulation of building elements:
Part 3, Laboratory test for airborne sound insulation of building elements! This part specifies the measurement of the uniform airborne sound insulation of buildings aged in rooms. This part includes small-sized components such as additions, floors, doors, exterior wall components of buildings and exterior walls of buildings (their measurement methods will be determined in T198S, 10). The results obtained from the measurements can be used to design buildings with good sound insulation performance, and can also be used to compare the sound insulation performance of building structures. It can also be used to perform level tests on the insulation performance of building components. The lateral sound transmission of the building is suppressed. If the influence of the lateral transmission loss factor on the sound insulation is not taken into account, the data measured by the test methods in this part cannot be directly applied to the actual situation. 2: Normative references t||The following clauses have become the clauses of this part through reference in this part. All the referenced documents with the indicated date and all subsequent amendments including errors or revisions are not applicable to this part. However, the official versions of these documents may be used as much as possible in accordance with the agreement of this part. The latest versions of the referenced documents with the indicated date shall apply to this part.
GB/T19889.1-200S Acoustic insulation test sheet for buildings and building components Part 1: Experimental test requirements for lateral transmission suppression (IS(10-1197.IDT)
H/189.2-300F Acoustic sound insulation test panel for pure buildings and pure building components Part 2: Determination of data accuracy, verification and application (IS0 14-2991.T)
GB/T32411995 Frequency type and fractional octave band filter technology (egIEC61260:1S95) GB/T4785-1983 Electrical performance and test method of sound pressure level meter 5/15173-1594 Calibrator (JFC60942:158) GB/T171811S97 Integral semi-average sound pressure level (idt[EC608041985) GB/T5U121·2U5 Building full sound evaluation standard JS051:13 Beijing University
3 Terms and definitions
Sound absorption of reverberation room
The following terms and definitions apply to this part
Average sound pressure level in the home averagesundpressureTevrl nonmE
The ratio of the spatial and temporal average of the square of the sound pressure to the square of the standard sound pressure, taken as the logarithm of this value multiplied by 0, in units. The spatial sound pressure is for the entire test room, and the area near the sound source must not be included in the area near the boundary, such as the surface, because they will have a noticeable effect.
If the sound source is diffused or continuously moved, the formula (1) is used to determine: ia ia
GB/T 19889.3-2005/1SO 140-,1995 In the formula:
urban pressure, the position is ((Pa)
—reference pressure, the value is 2nuPa
to the unit of measurement.
If the pressure gauge at several fixed positions is used for correction, it is determined by formula (2): Lau++y+
the root mean square of the urban pressure measured at different positions in the room. In actual work, the measured pressure level is usually determined by the following test:
The acoustic level at 10,000 different measuring points in the room is: to the sound volume
sunnd reductiunintlex
nrn(2)
The ratio of the work W on the test object to the sound radiation rate W of the test piece is taken as the logarithm with 10 as the base and multiplied by 10, unit, 215. This quantity is expressed as R: -10leh
In this section, R can be obtained by the following method:
R =,+a
Wu Zhong:
Indoor average household level of the source, the unit is decibel (dB>L
-receiving indoor average and compressible level, the unit is beige (R)-the area unit is square meter (r:. Equal to the surface intensity measured by the opening S
-receiving standard absorption by the ear, the unit is square meter). (5)
Society", in the formula [in the formula 5, the sound field number is very set, and the sound emitted by the end is only close to the test piece. The sound loss is required, and the transmission loss and the two are 1 in 122, 3.3
apparent sound quality
apparent aneud reduction index The ratio of the power of the source room to the total sound frequency of the room, the logarithm with the base 10 multiplied by 10, unit: m. If, in addition to the sound that can be transmitted through the wall to the receiving room, the sound that is transmitted through the side components or their components to the receiving room is also relatively obvious, then the apparent isolation R is: 2-+w
Generally speaking, the sound transmitted to the receiving room is the sum of the multiple parts. In this case, both rooms are scattered sound, so the apparent sound quality of this part can be calculated by the test report: h wlege
R'—L
GA/T 19889.3—2005/ISO 140-3;1995 Fourth, regardless of the actual transmission situation, the sound power of the receiving room is related to the formula (the power of the person projecting onto the test piece). The measurement equipment should meet the requirements of the first: the accuracy of the equipment should meet the requirements of Type 0 or Type 1000 in GB/T 378-1983 and TT1781-1007. Unless the sound source room and the receiving room both use the same transmission equipment as the actual test item, the measurement right The equipment needs to be calibrated. In order to obtain the accurate value of the sound level, before the equipment is used, the whole system including the microphone shall be calibrated with a sound level measuring instrument or a system that meets the Class 1 accuracy requirements of GB15173:1994. The 1:3 frequency filter shall meet the requirements of GH/T3241-1998. The valve ringing measurement equipment shall meet the requirements of IS3, 1985. The requirements for the source are detailed in Appendix 6.5. Test row
5. 1. The test results of the test room shall comply with the requirements of GB/T1968S.1--2005. 5.2. The acoustic transmission of the test piece will be related to the temperature and relative humidity of the test room during the test work and/or the curing of the test piece. The relevant information shall be stated in the report. 5.2.1. The size of the test piece shall be determined according to GB/T1968S.1--2005. The size of the test piece shall be determined according to the size of the test opening in the laboratory: for the increase, this size is 1, for the plate, the distance between the environment and the core shall not be less than 2.3㎡. If the low frequency test piece is half the length of the test piece, the length of the test piece shall be smaller. However, the smaller the test piece, the closer the test results are to the fixed conditions and local changes in the field. The test room should simulate the normal connection mode and measurement conditions at the boundaries and points under actual conditions as much as possible. The packaging situation should be reported.
The installation guide for double-layer light board partitions is the total H. The two sound levels of the entity and the core are greatly affected by the partition wall structure: In order to accurately express the effectiveness of the installation, it is recommended to measure and report the test results under these conditions (see Appendix E): If the total test piece is installed in the opening between the upper and lower chambers, the ratio of the depth of the two openings is 2:1. Except for the actual size of the components used.
If the test piece has one side that is most absorbent than the other, the side with higher sound absorption is closer to the source room. In this case, the sound source room should be installed with wide-angle components.
To meet G11/T:39 53.12005 test room, to ensure that the sound transmitted through the non-point of the test is comparable to the sound transmitted through the test piece, can be ignored, to verify this point, the test room facilities K, for this purpose, try to install the Ruisheng non-conductor in the test hole for testing. See Appendix A of GB/T19889.1-2035 for the test results. If the test piece is less than or equal to ten (K-5) B, the sound transmitted through the technical path can be ignored. The result is R.
If R is greater than 1), the lateral sound transmission under certain circumstances should be considered, and the specific method is explained in the D. If necessary, some modifications can be made to suppress the lateral sound transmission path of the test facility. GB/T19889.3—2005/150140-3:1995 If the final R is greater than (R\≤15) dB, then the test should be reported in the second step. Except for doors, windows, glass and exterior parts, no modification is required. If the test piece has a small sound pressure, it is necessary to carry out a preliminary test to prove that the power transmitted by the user is less than the sound power of the test piece. This can be done by the method in the appendix. 5.2.2 Doors, windows, glass and exterior parts
5.2.2.11.
The sound pressure test method for these test pieces is the same as that for wall test pieces: see 5, 2.1). If the test piece has a small sound pressure, it is necessary to build a special gap with a high enough performance ratio in the test opening and place the test piece in the gap. The rate of sound transmitted from this gap to other parts may be slightly different from the rate of sound transmitted from the component. If this characteristic cannot be achieved, then the test results must be corrected (see Appendix B). If the test piece requires a switch in the room, the test piece is installed as a free switch in the room, except for the direct connection test, and is opened and closed at least five times. The test piece is installed with its lower sill as close as possible to the test room to reproduce the actual conditions. For glass ports, windows, doors and other building structures, the area of 5 is the area of the test hole installed above the gap. For some glass systems or components, especially those with laminated glass, the test piece is affected by the temperature during measurement. Therefore, when measuring this type of test piece in separate rooms, it is recommended that the temperature in the two rooms be controlled at ±3°C. Before testing, the test piece should be left in the room for 24 hours. At the same time, if the test piece can not be controlled during the test, the more note 1 will be retained. The size of the door and the external small parts will be related to the size. At the same time, if the size of the internal parts is the same as the actual test piece size, the actual sound quality will be quite different. The total area of the test piece (especially the area before the estimated value) will not exceed 3B. In the end, the actual area may be larger than that. In order to obtain a reliable station, the two belts will be similar. The two markets of the same civil test piece are installed in the continent. 2; and the square-shaped parts will be lower than the two markets of the north. 5.2.2.2 Window Installation
The installation of the dense fan unit may be delayed during actual application and the product. When the window is installed at the trial production entrance, the window interior is set to the detection degree It should not be alternated unless there is a special design that conflicts with this. The wall depth ratio is preferably 2:1. If the depth ratio is different, the sound insulation results will also be different.
There is about 10mm~1mm between the original test opening on the seedling (the edge of the test opening and the test opening: it should be filled with sound-absorbing material (such as mineral damage) and sealed with elastic sealant on both sides. Or make corresponding sealing treatment according to the manufacturer's instructions. 5.2.2.3 Installation of glass
When the glass is installed in the test opening, the filling depth ratio on both sides should be kept at 2:1. At the glass and the test opening, the sound insulation should be kept at 111rr. This chain should be filled according to the actual use of bone filling in the risk record A. In order to fix the test piece, two wooden bars (25mm l×2m.m (see Figure 1:. The thickness of the plate between the glass and the solid layer should be larger than the rate of embedding. See the record. The virtual gain of the glass is not less than mm, not more than 15rm. Half! The sound of the scientific and technological degree of the ring represents the virtual sound of the glass period. The quality ratio should be stimulated and then used to obtain the sound of the band period required by the grid. The grid is passed through the grid, and the product is not affected by the item
1) This will be a real problem! The method of filling the inner dragon is not a practical choice in the engineering installation: it is a kind of dynamic implementation of the fast description of the dense discussion and the event will be occupied,
can be used as a auxiliary dense time control core
mine structure;
sound radiation single material:
water minister strip:
collection of Swiss test piece.
GA/T 19889.3--2005/ISO 140-3:7995 Unit: mm
Juice: The multi-layer environment shown in the table is installed in the (smaller) opening of the collection and filling spray (see GP/T13889, 12G0 net release C for details), Figure 1 Installation of glass test pieces
Test steps and calculation
6.1. Generation of sound field in sound source box
The sound field generated by the sound source room is steady and has a continuous spectrum within the frequency range under consideration. The filter should have a bandwidth of at least 1/times: if broadband sound is used, its frequency should ensure that the receiving room has a suitable power-to-noise ratio in the commercial frequency band (it is recommended to use self-reflection. In any case, the sound level difference between adjacent 1/3 times the effective band should not be large. According to the sound level on all independent bands in the receiving room, the commercial quality is guaranteed to be achieved. To this end, the sound frequency of the sound emitted must be sufficient. If this condition cannot be met, the connection should be carried out according to the method of 6.5. If the source box has 1 loudspeaker working at the same time, each loudspeaker should be controlled to stop working. Other measures should be taken to ensure that the field potential reaches the standard of C.3 of the attached system. If multiple sound sources are used in the evaluation room, it will be ensured that these sound sources are of the same frequency, driven by the same voltage, and emit comparable signals. Continuously driven sources can also be used. When using these sources, at least two locations must be used. These measurements can be made in the same room, or by replacing the source and receiving locations in the same room. In this case, one or more sound source locations should be measured in each room. If the sound absorption of the test piece is significantly greater in one direction than in another, the sound absorption can only be measured in one direction (5.2.1). Place the equalizer as far as possible and at a certain distance from the test piece so that the direct sound is not too obvious. It is greatly affected by the type and location of the sound source. The technical requirements for the location of the loudspeaker and the right point shall be implemented in accordance with the requirements of the attached requirements. For the convenient use of mobile frequency, see [2.5. 6.2 Measurement of average sound pressure
The average sound pressure can be obtained by the following methods: sampling individual sound sources at different locations: or using a fixed arrangement of microphones or a continuous moving microphone. For all sound sources, the sound pressure levels measured at different locations should be calculated as the average [(1) to (3) 6.2.2 Microphone location
Each room should have at least one microphone, and the distribution should be the smallest of the available rooms. The location of the microphone should be within the maximum net measurement space of the store (Appendix (about microphones) The following are the minimum distances between the microphones and the room boundary or inlay: 3m between the microphone and the sound source: 1.011m between any microphone and the sound source. Note: If a single moving microphone is used, the scanning should be at least 1m. To allow for full coverage of the indoor space, the plane of the bottom of the room should be inclined at an angle of less than 1° to any interface of the room. The scanning should be repeated for at least 5 minutes at each microphone measurement point. The center frequency should be less than 0.01z. The average time should be at least 1m for the center of the sample, but not less than 45°. If a moving transmitter is used, the average time shall be the sum of all the sweep points and shall not be less than ten. 33.6.3 Frequency range
When measuring with a 1x frequency filter, the following frequency shall be included in the measurement, in units of H2: Icc
If low frequency range is required, the following center frequency shall be added: 30Hz53Hz.uHz: The attached figure contains a guide for this additional measurement. 3.4 Estimation of mixing time and avoidance
The maximum value contained in the stop term of formula (5) is determined based on the estimated value obtained from S51. The main requirement is to complete formula (3): A-0.J6 V
Where:
1——absorption, unit meter m
V1. Acceptance standard: Unit is cubic * (m) below——mixed average of receiving room. Unit is type (), -52
According to 1S()351:1985. The start of the full receiving time calculated from the transformer end should be 0.1 after the sound source is disconnected, or from the beginning of the sound pressure level of the transformer. The transformer template used is small 10. The room is large, the noise level cannot be close to the square line, the lower end of the decay section is 1 dB higher than the back noise level. The decay measurement is required to be carried out once. For each situation, at least one recording and one megaphone are required to be taken and two readings are taken. GB/T19889.3=-2005/[S0145-3,1995 If a transverse acoustic device that meets 6.2.2 is used, its travel time is less than 156. 5. Correction for background noise
The background noise level should be at least 1/2 of the total noise level after the background noise is added.
If the difference is between 6B and 15, the correction can be obtained by the formula (calculated - lulg(loa\—oa)
"——The signal pressure level after verification, in decibels (B); and the total unit of back adjustment (dB):
Backward sound level, unit price is the price of the sound level (d). (93
If the internal pressure level is less than or equal to, the difference compensation is 1.3 times the positive value of the time. In this case, the measured value is the R reported in the report, and the corrected value is the R that is best to be paid directly [Section S e7 precision The measurement work requires sufficient flexibility: it should be determined in accordance with (/T19HH9.2-20(% small) to determine the complexity, and it should be checked in operation, especially when the test steps or equipment are interactive: Note: the numerical value of the complexity should be as follows: H.19xX:--G8. In order to express the airborne sound insulation performance of the test piece, all measured sound insulation values should be given in tabular form with one decimal place. The coordinates in the test report are sufficient to reduce the sound volume. The horizontal axis is the logarithmic coordinate of the nominal sound volume, and the scale of the drawing is: mm. It represents a 12-fold report. The report adopts the format of the record. As a simple test report, all important information such as the test object, test steps and test results shall be listed.
If the evaluation of the interval also requires the data of the staggered group, it can be calculated according to formula (10) from the numerical value of "one bottle within two"-1 times the specification:
If the test procedure is carried out in the same period, the arithmetic balance of all the measurement results of each period can be obtained. 9 Test report
Test report content:
Based on GR/T198 (in Chinese)
Name and address of the testing laboratory;
Manufacturer name and production number:
) Name and address of the testing unit or individual:
Description of the test piece and installation condition, test size, unit area quality, maintenance time and conditions of each component: The installer or testing unit of the test piece should be listed; GH/T198B9.3 —2005/ISO140-3,1995g
Details of the test procedure:
volume of the reverberation chamber,
air temperature and relative wakefulness of the test piece
relationship between the maximum sound speed and the judgment rate
simple description of the measurement step and equipment details: description of the results obtained under certain measuring conditions, such as those obtained from back-stage sound (acoustic or electrical, see 6.5), and the influence of lateral sound transmission. When the sound pressure is small, the measurement results can be given in the form of B. For the latter, a suitable R table and/or the total loss of all test rates should be recorded in the form of a load: (If measurements are carried out, refer to the record
for the curve R (> single value evaluation (see Js/C12: 2005), and clearly state that it is based on the results obtained by the real number room method measurement,
Appendix A
(Normative Appendix)
GH/T19889.3—2005/1S0140-3:1995 Test of sealing height for installing glass
The specifications of the paste used to fix the test piece shall comply with the following measurement conditions of this part according to the requirements of 5.2.2.9. This sealing height is 10 μm thick (.3mm 1230mm × 148m% calcium silicate glass (float glass, F = 7 × 1 MP, 2599g/m3 elastic modulus) was installed in the test chamber. A 1/octave narrow frequency band gas isolation plate was used from 1m00Hx to 315Hz. The first withstand test shall be carried out within 1 hour after installation and the test results shall meet the following requirements (within 100 Hz) 1 6 H: R=3:.3dB
? (H00 Hz: R=35.6dB
2 500 Hz: R.- 39.2rT+
3 150 Hs: R=42.9 dB
In order to prevent the test results from being affected by parasitic phenomena, the second measurement shall be carried out 24 hours later. The average of the four 3R values shall not exceed 0.5dB. The test port shall comply with the provisions of Appendix (15) of H38339.120C5:
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