Acoustics—Stationary audible warning devices used outdoors—Part 1:Field measurements for determination of sound emission quantities
Some standard content:
s 91.120.39
National Standard of the People's Republic of China
CB/T 19889.12005/IS0 140-1:1997 Acoustics-Measurement of sound insulation in bailings and building elements Part 1: Requirements for luboratory test facilities with suppressed flanking transmission (IS0 :4-1:19S7.IDT:
2005-09-09 Issued
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
2006-04-01 Implementation
CB/T 19B89.1-2005/ISO 140-t:1997 Foreword
2 References
3 Laboratory testing of acoustic sound levels under laboratory conditions
3.1 Rooms
4.2 Specimen installation openings
Attachments A.1 List of maximum measurable noise levels A.2 Representative structures
A.2.1 Appendix (normative): Measurement of acoustic sound levels in hidden buildings (and high-rise structures) where specimens are installed B.1 General
2 Recommendations
E. 3 Alternative method
Results reached
Appendix (data list):
Test pieces for measuring the sound insulation of glass
Appendix D (current normative list)
Test pieces for testing the sound insulation of double-walled walls
15898 Specification and parts:
Part 1: Requirements for laboratory test facilities for suppressed sound insulation; Part 2: Determination, verification and application of numerical precision; Part 3: Experimental examination of the actual sound insulation of building components Part 1, on-site wind speed measurement of some noise generated by the air between two rooms: Part 5: Dynamic measurement of noise reduction of outdoor plants and outdoor variables: Part 5, Laboratory test records of noise insulation for controlling harmful sounds, Part 7, Field measurement of noise insulation of building core bodies: GB/T19B89.1—2005/1S0160-1:1997: Part 8: Experimental measurement of the main quality standards for noise control in buildings: This part is the first part of GBT1859: Identification.
This part adopts S140-1, SS? Acoustic permeation and acoustic efficiency test components - Part 1 - Requirements for laboratory test facilities for acoustic transmission* and 3140-1:1997/214% acoustic building and acoustic efficiency test components - Part 1, requirements for laboratory test facilities for acoustic transmission by suppressed components - Part 4, requirements for laboratory test facilities for double-layer lightweight panel structures - English version!
S101? Comparison:
This part is in addition to? 15) 140-1:1S57 Section 3.1 Notes and 4.1 Notes Considering the size of the test piece installation, the room volume is 50m2, which is a suitable "text". This is a small room in the state of the medical department. It is difficult to meet the requirements of the test site. And the existing requirements of our country are that the volume of households is 10 people. This standard estimates the existence of this part. Special I50 in 200 years. The core: 4)-1, 1(7 supplementary documents 151401, 1997md1231shan Science: Building and structural sound measurement Part 1, side sound transmission laboratory test equipment short requirements supplementary documents 1. The requirements for the test holes in the double-layer light-weight partition are listed in Appendix D. This part is a relative modification of the requirements of 112.1:1997. In addition to the recording of this part, Appendix D is the current core property appendix, and the material property appendix is the material property appendix. This part is issued by the Chinese Academy of Sciences.
The rate is divided by the National Acoustic Standardization Technical Committee (SA/7) 5, and the drafting units of this part are: Qiao University, China Academy of Building Research: the main people of this department, the season of engineering, China.
1 Specification
GB/T 19889.1—2005/1S0 140-1:1997 Acoustics - Measurement of sound insulation of buildings and building structures
Part 1, Requirements for laboratory test facilities for suppressed lateral sound transmission
This part specifies the technical requirements for laboratory test facilities for building components. This part requires the use of lateral components to auxiliary emitters and/or receivers to achieve structural separation of experimental cases and tests. 2 Normative references
The following items are approved by G! 1S9 The technical parts of this part shall apply to all references to this part: All subsequent amendments (excluding errata) to this part shall not apply to this part. For any undated version of this document, the new edition shall apply to all references to this part.
H/1988≤-.05 Acoustics in buildings and buildings Part 3: Acoustics of constructed air by laboratories (including those for use by weak users) shall apply. 1S0)4-3:1995,
ES0141-51997: Acoustic Measurement of Buildings: Part 8, Standard for the Measurement of Airborne Noise in Diffuse Fields 3.1 Rooms The test facilities for the measurement of airborne sound in diffuse field conditions shall consist of a room or a filter chamber, with the two test rooms having the same dimensions and/or dimensions as the test room. Note: The volume and/or dimensions of the test rooms shall differ by at least 10 m. The area of each test room shall be at least m. The appropriate room dimensions shall be chosen so that the low frequency frequencies are distributed as evenly as possible. Note: Theoretical analysis and experiments have shown that in the test style or the test type, the entire room or ceiling of the test room, that is, the style of the equipment "from the edge to the top, from the sky to the ground.
The sound pressure in the room changes significantly, indicating that there is a strong and active role. This indicates that there is a need for expansion in the room. After the experiment, the position and external position of the protection micro-reach must be corrected. The goal is that the sound volume will no longer be affected by the sound after the expansion is installed. The time of the test piece in the room should not be too short or too short under the normal test case. When the low reverberation is too high, it is necessary to check whether the room size is too large. If it is found that the expansion has been installed, the room package needs to be dealt with in order to adjust the low expansion reverberation time () to meet the requirements of formula 1; 1 sT()
W is the volume of the room in cubic meters (m3). Considering the sound insulation performance of the test piece, the sound should be low in the power and the sound source room, so that the sound transmitted from the sound source room can be measured. In the test room for measuring the sound insulation, the sound transmitted in any non-direct way can be ignored compared with the sound transmitted through the test piece. GB/T9889.1—2305/150 140-1:1997 To achieve this, there must be sufficient structural insulation between the source room and the receiving room. Another method is to cover all surfaces of the two rooms with walls sufficient to reduce lateral transmission. The maximum isolation R that can be obtained is determined by the design of the sound insulation according to the sound insulation design. The actual sound absorption of the test piece will be affected by the inherent loss factors of the test structure around the test piece. The mass-to-heat ratio of the receiving or structure and the surrounding structure should be taken into account. When testing light-weight stations, there are no special corresponding requirements. When the test station is relatively medium-quality, the energy efficiency of the weekly station is guaranteed to meet the following conditions, that is, The test specimen loss area number should not be less than the formula (2): uC.5+.3/
"test rate, unit is H),
In order to meet this requirement, the test specimen is read in a temperature range of (400 ± 40ks/nt). For the loss number, see GB/R3a.-2na5.
3.2 Test specimen installation
3.2.1 Wall and floor
The installation area of the drip test specimen should be 1m, and the floor test specimen should be between 1 and 20. The short side of the wall and floor should not be less than 2.3Ⅲ,
When the wavelength of the self-emitted wave with the lowest loss rate is less than half of the length of the test piece, it is the front of the test piece with the smallest stop. However, the smaller the test piece is, the more sensitive the test results are to natural constraints and local changes in the sound field, and the two outputs of the test piece are related to the size of the test piece. If the conditions meet the requirements, the test method can be referred to in the appendix (for the test installation and opening of the curtain wall, see the requirements for the sound test of the light pressure board partition tower structure. 3.2.2 [Doors and similar components
For the continental test of similar components, the test installation platform less than 10m is also suitable. The door cloud component is installed on the bottom edge of the test hole and the test piece is installed on the ground to approach the actual building effect. 3.7.3 Windows and glass
For the composite components that are isolated or sound-proof, the test piece with an area of less than 1" is suitable for installation in the opening. The standard components are installed in the pond between the two test characters.
The fill barrier should meet the following requirements:
) For the two test numbers, the sound energy transmitted through the test piece shall be at least lower than that transmitted through the test piece, and the sound transmission to the target shall be at least 1SB lower than that of the worker! Appendix B gives the test method for the sound transmission in the hazardous environment and its examples). h) The total should not exceed 5 (center n,
c: The depth of the two side walls is different. It is recommended that the ratio of the depth on both sides be about ?1. The sound absorption coefficient of the sealed material in the test frequency band is less than , "Children's side test piece installation question 1: Standard size" 253mm×1m·It is recommended to ensure that the allowable deviation of each side is ±50mm, and the window test piece should also be the size of the sample. Considering the actual situation of local injection, this size can be adjusted appropriately. The combination of Liu Yu's penalty is external or surface-mounted suction doors. Only representative reflections can be shown in the following cases. The first installation The hole position is planned and the worker leaves a hole of ~5m. The test liquid inlet of the installation room should be installed as shown in Figure 1. It can be flush or have steps. If there is a large "inspection certificate, the steps should be eliminated. The holes on both sides should be in the same environment. The small space between the altar and the flower plate should be 00. The hole should be in an asymmetrical position in the filling environment.
This is an example of a test hole that is both awkward and built. Standard: In order to ensure that the original laboratory data can be opened as much as possible, the test is carried out in a nearby laboratory. The detailed city is determined. 2
GB/T19889.1—2005/ISO 140-1:1997 i:mam
test glass test room, horizontal part of the floor and floor surface layer of the impact sound insulation laboratory test facilities 4.1 receiving room
receiving transformer capacity should not be less than 5: the ratio of the receiving size should be reasonably selected to make the normal frequency of the several sections as evenly distributed as possible. In order to obtain the expansion field, it is necessary to install expansion elements in the receiving room: note: buried tubes and some light military caps indicate , the test piece should be in the same shape as the receiving room, and the design should not be extended from the environment.
The receiving air should be under the positive energy test condition (the effective absorption time of the test piece is not too long or too low. When the absorption time is less than 1, check whether the sound insulation of the room is satisfactory. If it is found that the diffuser has been installed in the room, the room still needs to be analyzed and adjusted to make it meet the requirements of formula (3): 1 s Tea()3
武中;
The volume of a room, the characteristics of the test piece and the actual test piece will be determined. The noise level of the receiving room is sufficient to measure the sound of the connecting board that is more than 1 meter away.
The air sound insulation between the connecting room and the sound source room should be sufficient to ensure that the sound field measured in the connecting room is only generated by the test board under the impact.
4.2 Component installation opening
It is recommended that the test piece be installed at a height of 1020m, which should be less than 3m. When the connector is 15014-159? The current measurement of the tooth barrier surface layer of the continuous outflow Lu collection 4-way with the size of the opening of the seat is 10m
CB/T19889.1-2005/1S(>140-1:19974.1
(Normative Appendix)
Estimation of the maximum measurable trapped sound volume
4. It shows the different special paths for the sound between the two actual test facilities, 1M direct sound transmission.Fd, t.DI is the measurement sound transmission inspection,
Figure 4.1 Reading the sound situation in the test facility path
The average vehicle laboratory test method is not affected by the convenient sound transmission, etc., and the maximum internal noise level required is the type of component being measured. Therefore, when the source of high sound performance is high, the role of sound transmission can be evaluated. Although this is not very practical, it can measure the maximum isolation volume R of several structures that can represent the conventional variation measurement. According to the requirements of GB/T15889.3-2005, the length of the test result should be marked in the test report. The following are some representative structures, which are most similar to the conventional test components in the laboratory and can be used in the test. The typical structure with a common test hole, a hollow wall or a separated dense building, such as a full-length structure, can be installed with two layers of hollow walls. However, the length obtained is not used in the combination of this test piece. The following are some representative structures for checking the validity of the test results: 15FM9.3-2005.2.: A.2 Several representative structures For Class A environments and building structures (below), the side sound transmission is mainly light, and it is only slightly affected by the test. For B and C type provincial and sensitive version structures, the side transmission paths include Ft, Fd and D:: these special paths are all affected by the nominal separation structure page. For Ding Nai Mei City template structure, the quality of the clothing should be tested on the structure of the screen. In this way, in order to reduce the sound transmission through the path,
A light partition block
double-layer wall, its sheets are made of several layers of sound or single-layer boards with similar area and quality (5/) and the cavity is at least m. The inner right rate is less than umm, and the plate materials are fixed on the dry or metal dragon, and there is no H other benefit connection between the relative positions. The lightweight board should not be connected to the same site as the water station structure. B: the wheel is broken and the spots are cultivated. The code is picked or replaced. The surface of the sheep is anti-resistant. The single piece surface quality (10020)m should be filled with two layers of 12.mrr cover seven sound versions of the dynamic standing agent. They are shielded and connected with any six or more dragon transmission brackets. The night village is the starting point of the new wall support. The surrounding layer of the station is not virtual and the connection is made with the brush. The distance between the wall and the pasting layer is at least greater than the original distance. The key should be placed in the core cotton.
Core category: glass wall
CB/T19889.1—2005/15014Q-1.1997 brick wall, semi-plastered, single value area (4+) kz/m2, installation includes an independent lining layer of 12.mm plaster fixed around the body and not connected to the art or metal shelf. The space between the book and the lining layer is at least m, and the lining is placed in a vacant space. The bottom of the lining layer is supported on the side of the tower: the lightweight lining is not rigidly connected to the other side:
A.2.2 Formwork
Class 4: needle slab
Lightweight lining can be installed with a ceiling at the bottom of the slab. The details are nearly equivalent to the above-mentioned light beige test, Class B: diameter and T floor plate || tt || single board surface loss (1 center) k ratio has been the altar work volume layer, a currency or density number. Layer! 2.m no sound plate village paste high to be under the work of the work alone text drag specification, the room cavity should be effective stomach column increase, the lower light longer standing crown of the surrounding not with the request long structure just work potential, or loss - science with 75mn thick ore hanging will paste the layer "floating" support structure. Class: medium quality mud amount large structure || tt || piece of 5 quality valve according to avoid soil extreme new half test hope to use 14010m in line with Taiwan 150141-8:097 for the car test plate requirements. Two layers of 2.mLr. paste proud of the situation of the paste layer installed under the main floor of the bone Ding Gang reinforced concrete slab under the commercial pick grid, the cavity expansion cotton, light craftsman chip village small layer suitable for internal connection with the permanent structure, the effective, the month 5 lead mineral wool village Yue all * "on the mud face of the version"
Table A gives the typical laboratory R values of the type of sound insulation N compensation, the type of floor slab. Table A is only an example, it is not appropriate to use the standard value. Table 41 is a typical laboratory R value for the test type of floor slab
special sound control diameter f1 and 1F Rmd
+ connected source PFd R
1 (mn 1125
GA/719883.1-2005/TO11401:1997 Appendix B
(Normative Appendix)
Gap filling wall for trial installation of window and glass openings "to re-use the inverse of the sound insulation of the wall structure B,1 General
The test piece is installed according to the test piece, including the lateral training parts. The left and right low frequencies should be less than the test piece sound insulation. This value is only for the test date.
B.2 Recommended method
To measure the basic R, a method to reduce the number of test pieces is to install a flexible layer (e.g. a 3 mm thick steel plate) in the test hole, which should be 25 mm thick. The surrounding area should be wide and flat, and the sound absorbing material should be filled in the cavity between the road layer and the test piece. D.3 Alternative method
When the above method is not applicable, for example when there is a common operation between the test piece and the additional layer, the following method is used to measure the test piece. Only the additional layer is used to determine R=. In this case, install a layer of 1 m thick glued to the wooden feather board at the test piece. Fill the cavity between the additional layer and the test piece with sound absorbing material. The connection between the two layers of filling (if any) should not be covered by the above structure.
K.4 The noise level of the glass or the research is expressed as R. Its calculation must be in accordance with the provisions of CK/T10885, 2-2505. The area of the test port must be considered before the test. When the R value is compared with the apparent sound insulation scale obtained by the above-mentioned structure or the equivalent method, if the virtual sound insulation scale is less than 15 points, the calculated value R should be corrected as follows: R = 10 'R(1c-n -10-&r\) dE - where
R is the sound level measured at the test port of the test equipment, the unit is % (IT: R-the sound level measured at the test port of the special structure, the unit is %). The difference between and in the logarithmic band and the small Ning H purchase corresponding to the value of the image is mostly 1.3, in this case, R should be given in the test monitoring report. In this way, the R value under control can be clearly shown. The minimum value of the test plan will be given in the test room and the typical value measured within the adjustment range can reach 45. The efficiency values in Table 3.1 are examples. This should be used as the daily standard efficiency R'r/dE, GB/T19889.1—2005/I5O140-1:1997 experimental test separation and glass typical value K in a 1250mm×150mm hole 121:
2 son)
GB/T19889.1—2005/1SU140-1,1997 C
(Data?
Test source for measuring the sound insulation of glass
The size of the test piece installation mouth is 125cm1593mm. The test piece is deep (41cm2:0)mm, and the whole is covered with two layers of concrete or bricks with a density of at least 1&Ccks/m. The space between the two positions is filled with polyurethane foam and covered with a separate radioactive material. Figure (1 shows the test of installing glass Detail of the horizontal section and vertical section of the opening. Unit price: m2
Mineral sound:
Sound reflection special material
Double wall:
Compressible sealing material!
Finally,
Note that the single-sex material used will not exceed the compensation of two trees with meters of compensation, Figure 1 Anfa glass test piece adjustment
Attached to DwwW.bzxz.Net
(Normative Appendix)
G/r19889.1—2005/r50140-1,1997 Provisions for double-layer lightweight insulation and sound test opening structure Requirements for the light-duty layer of the board, the separation will be affected by the test specimens and the overall scheme of the test frame due to the cross-section of the river. See Figure 1.1. This is not affected by the installation conditions in the test room, the material characteristics and size of the frame, etc., the double-layer structure itself is exposed between the full structure of the transmission of the "for example, its month or in the plate Rui tremor" belongs to the specific wall selection structure of the country, this kind of exploration of the transmission of the four parts of the test.
Test frame
Figure 13, 1 test specimens and special beam frame schematic diagram in order to improve the sound between different laboratories In order to ensure the performance of the test structure, the surface mass per unit area of the structure should be many times greater than that of the two walls. The surface density of one wall in the double-layer wall should be at least 1:6 compared to the surface width of the test frame. The minimum height and depth of the frame should be 1u0m-200mm respectively, and the average density should be at least 2cakg/m3. In addition, the frame should only be made of dense and homogeneous soil or other materials. The frame connected to the double-layer structure should not be used. The surface density of the test frame specimen shown in Figure 2: surface density and sequence density! Respectively use formula (D.1) and (D.2) to calculate:
the surface space of the test facility inspection frame,
the average density of the test structure:
the average density of the test structure frame,
the density of the test piece;
the early pressure of the test piece:
m'tspt1—2005/r50140-1,1997 The requirements for the double-layer lightweight sound insulation test opening structure are for the effective layer of lightweight panels. The test specimens and the case are all understood as shown in the figure! .1, which is not affected by the installation conditions in the test opening, the material characteristics and dimensions of the frame, the double-layer structure itself reveals the transmission of the whole structure, for example, or in the plate Ruijing, the problem of the selection of specific wall structures, this kind of test transmission is not the problem of this part of the test.
Test frame
Figure 13, Schematic diagram of the test specimens and special beams and frames. In order to improve the reproducibility of the sound between different laboratories, the surface mass of these structures should be many times greater than that of the two layers. The ratio of the surface density of the first layer of the double-layer wall to the surface width of the test frame should be at least 1:6. The minimum height (>) and depth of the frame should reach 1u0mr200mm, the average density is at least 2cakg/m2. The surface quality of the cross section should be 4 km. In addition, the frame should be made of dense and homogeneous soil or other materials. The frame connected to the double-layer structure or metal frame should not be used. The surface density of the test frame shown in Figure 2 is: surface density. And sequence density! Calculate the following using formula (D.1) and (D.2):
The surface density of the test frame of the test facility,
The average density of the test frame:
The average density of the original frame of the test frame,
The density of the test frame;
The early pressure of the test frame:
m'tspt1—2005/r50140-1,1997 The requirements for the double-layer lightweight sound insulation test opening structure are for the effective layer of lightweight panels. The test specimens and the case are all understood as shown in the figure! .1, which is not affected by the installation conditions in the test opening, the material characteristics and dimensions of the frame, the double-layer structure itself reveals the transmission of the whole structure, for example, or in the plate Ruijing, the problem of the selection of specific wall structures, this kind of test transmission is not the problem of this part of the test.
Test frame
Figure 13, Schematic diagram of the test specimens and special beams and frames. In order to improve the reproducibility of the sound between different laboratories, the surface mass of these structures should be many times greater than that of the two layers. The ratio of the surface density of the first layer of the double-layer wall to the surface width of the test frame should be at least 1:6. The minimum height (>) and depth of the frame should reach 1u0mr200mm, the average density is at least 2cakg/m2. The surface quality of the cross section should be 4 km. In addition, the frame should be made of dense and homogeneous soil or other materials. The frame connected to the double-layer structure or metal frame should not be used. The surface density of the test frame shown in Figure 2 is: surface density. And sequence density! Calculate the following using formula (D.1) and (D.2):
The surface density of the test frame of the test facility,
The average density of the test frame:
The average density of the original frame of the test frame,
The density of the test frame;
The early pressure of the test frame:
m'tspt
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