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Similar standardsTB/T 3122-2019: Acoustic elements of railway sound barrier---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/TBT3122-2019RAILWAY INDUSTRY STANDARD ICS 45.020 S 09 Replacing TB/T 3122-2010 Acoustic elements of railway sound barrier Issued on. MARCH 25, 2019 Implemented on. OCTOBER 01, 2019 Issued by. National Railway Administration Table of ContentsForeword... 3 1 Scope... 4 2 Normative references... 4 3 Terms and definitions... 5 4 Technical requirements... 7 5 Inspection methods... 9 6 Inspection rules... 11ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces TB/T 3122-2010 "Technique requirements and measurement of acoustic elements of railway sound barrier". Compared with TB/T 3122-2010, the main technical changes of this standard are as follows. - MODIFY the requirements for acoustic performance, providing the requirements for sound absorption and sound insulation performance of acoustic elements, by frequency division (see 4.1; 4.1 of the 2010 edition); - MODIFY the fireproof performance requirements and inspection methods (see 4.4 and 5.5; 4.4 and 5.5 of the 2010 edition); - MODIFY the requirements and inspection methods for anti-corrosion performance (see 4.5 and 5.6; 4.5 and 5.6 of the 2010 edition); - ADD the requirements and inspection methods for waterproof performance of acoustic elements of sound barriers (see 4.7 and 5.8); - ADD the performance retention rate requirements and inspection methods, for organic synthetic transparent panel acoustic elements (see 4.9 and 5.10). This standard shall be under the jurisdiction of the Institute of Energy Conservation, Environmental Protection, Labor and Sanitation of China Academy of Railway Sciences Group Co., Ltd. The drafting organizations of this standard. Energy Conservation, Environmental Protection, Labor and Sanitation Research Institute of China Railway Research Institute Group Co., Ltd., China Railway Economic Planning Research Institute Co., Ltd., China Railway Design Group Co., Ltd. The main drafters of this standard. Yin Hao, Shui Chunyu, Song Jun, Guo Huaiyong, Ni Guangbin, Xue Linhai, Ma Aiying, Liu Shuo, Hong Wei, Lv Dongmei. This standard replaces the standard previously issued as follows. TB/T 3122-2005, TB/T 3122-2010. Acoustic elements of railway sound barrier1 ScopeThis standard specifies terms and definitions, technical requirements, inspection methods, inspection rules for acoustic elements of railway sound barriers. This standard applies to the design, manufacture, product inspection of acoustic elements of railway sound barriers.2 Normative referencesThe following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this standard. GB/T 1036 Test method for coefficient of linear thermal expansion of plastics between -30 °C and 30 °C with a vitreous silica dilatometer GB/T 1040.1 Plastics - Determination of tensile properties - Part 1.General principles GB/T 1041 Plastics - Determination of compressive properties GB/T 1633 Plastics - Thermoplastic materials - Determination of Virat softening temperature (VST) GB/T 2410 Determination of the luminous transmittance and haze of transparent plastics GB/T 3947-1996 Acoustic terminology GB/T 5464 Non-combustibility test method for building materials GB 8624-2012 Classification for burning behavior of building materials and products GB/T 8626 Test method of flammability for building materials GB/T 9341 Plastics - Determination of flexural properties GB/T 10299 Test method for hydrophobic nature of thermal insulation GB/T 14153-1993 General rule of test method for impact resistance of rigid plastics by means of falling weight3 Terms and definitionsThe terms and definitions, which are defined in GB/T 3947-1996, as well as the following terms and definitions, apply to this document. For ease of use, some terms and definitions in GB/T 3947-1996 are repeated below. 3.1 Railway sound barrier A structure, which is built on both sides of a railway line, to reduce the impact of train running noise on the acoustic environment. 3.2 Acoustic elements of sound barrier A unit in a sound barrier, that functions as sound insulation and/or sound absorption. 3.3 Sound absorption coefficient The ratio -- of the sum of the sound power, which is absorbed by the interface (surface) or medium, plus the sound power, which is transmitted through the interface (wall or partition, etc.), TO the incident sound power, at a given frequency and condition. In general, the measurement conditions and frequencies shall be explained. The sound absorption coefficient is equal to the sum of the loss coefficient and the transmission coefficient. [GB/T 3947-1996, definition 12.38] 3.4 Noise reduction coefficient The arithmetic mean of sound absorption coefficients, which are measured at 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, etc. It is calculated to two decimal places; the last digit takes 0 or 5. [GB/T 3947-1996, definition 12.43]4 Technical requirements4.1 Acoustic performance The sound absorption performance of a sound barrier's acoustic element is characterized by its noise reduction coefficient and sound absorption coefficient towards the sound source side. The sound insulation performance of sound barrier's acoustic elements is characterized by weighted sound reduction index and sound reduction index. It shall meet the following requirements. 4.2 Wind pressure resistance The wind pressure resistance performance of the acoustic elements of the sound barrier shall be evaluated, based on the requirements that it shall not occur functional impairment, residual deformation or damage; that the maximum elastic deflection shall not exceed LA/100 (wherein LA is the maximum free length of the acoustic element of sound barrier, the same below); that the residual deformation shall not exceed LA/500. 4.4 Fireproof performance The acoustic elements of organic synthetic transparent panels shall meet the requirements of grade B2 and above in GB 8624-2012. 4.5 Corrosion resistance The anti-corrosion performance of metal materials in acoustic elements of sound barriers is represented by salt spray resistance or coating adhesion. Salt spray resistance and coating adhesion shall meet the requirements in GB/T 17748-2016.The salt spray resistance grade is less than or equal to grade 1; the coating adhesion is grade 0. 4.6 Fatigue resistance Anti-fatigue tests shall be carried out, on the acoustic elements of sound barriers, on railway lines where the train's design running speed is over 200 km/h. After the anti- fatigue test is carried out, according to the test method of 5.7, there shall be no internal and external structural damage, such as. cracks, panel damage, bonding failure, hardware loosening and other functional disturbances.5 Inspection methods5.1 Sound absorption The test device, test method, specimen preparation for the sound absorption of acoustic elements of sound barrier shall comply with the relevant provisions in GB/T 20247. 5.2 Sound reduction The test device, test method, specimen preparation for the sound reduction of acoustic elements of sound barrier shall comply with the relevant provisions in GB/T 19889.3. 5.4 Impact resistance 5.5 Fireproof performance Test according to the corresponding test methods, in GB/T 8626, GB/T 20284, GB/T 14402, GB/T 5464. 5.6 Corrosion resistance Test according to the test method in GB/T 17748-2016. 5.7 Fatigue resistance Calculate the fatigue load, according to different materials, operating flow, operating speed; use a fatigue testing machine to perform 4 x 106 fatigue cycle tests, under sinusoidal cyclic load and vibration frequency of 4 Hz. 5.8 Waterproof performance Test according to the test method of GB/T 10299. 5.9 Appearance Visual inspection is carried out, under bright light conditions or under 40 W fluorescent lamps. 5.10 Properties of organic synthetic transparent plates6 Inspection rules6.1 Exit-factory inspection The product shall be inspected before leaving the factory, AND accompanied with an exit-factory inspection certificate. The exit-factory inspection only checks the appearance. 6.2 Type inspection The items and methods of type inspection are as shown in Table 3.Type inspection of the product shall be carried out, in the following cases. TB/T 3122-2019 RAILWAY INDUSTRY STANDARD ICS 45.020 S 09 Replacing TB/T 3122-2010 Acoustic elements of railway sound barrier Issued on. MARCH 25, 2019 Implemented on. OCTOBER 01, 2019 Issued by. National Railway AdministrationTable of ContentsForeword... 3 1 Scope... 4 2 Normative references... 4 3 Terms and definitions... 5 4 Technical requirements... 7 5 Inspection methods... 9 6 Inspection rules... 11ForewordThis standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces TB/T 3122-2010 "Technique requirements and measurement of acoustic elements of railway sound barrier". Compared with TB/T 3122-2010, the main technical changes of this standard are as follows. - MODIFY the requirements for acoustic performance, providing the requirements for sound absorption and sound insulation performance of acoustic elements, by frequency division (see 4.1; 4.1 of the 2010 edition); - MODIFY the fireproof performance requirements and inspection methods (see 4.4 and 5.5; 4.4 and 5.5 of the 2010 edition); - MODIFY the requirements and inspection methods for anti-corrosion performance (see 4.5 and 5.6; 4.5 and 5.6 of the 2010 edition); - ADD the requirements and inspection methods for waterproof performance of acoustic elements of sound barriers (see 4.7 and 5.8); - ADD the performance retention rate requirements and inspection methods, for organic synthetic transparent panel acoustic elements (see 4.9 and 5.10). This standard shall be under the jurisdiction of the Institute of Energy Conservation, Environmental Protection, Labor and Sanitation of China Academy of Railway Sciences Group Co., Ltd. The drafting organizations of this standard. Energy Conservation, Environmental Protection, Labor and Sanitation Research Institute of China Railway Research Institute Group Co., Ltd., China Railway Economic Planning Research Institute Co., Ltd., China Railway Design Group Co., Ltd. The main drafters of this standard. Yin Hao, Shui Chunyu, Song Jun, Guo Huaiyong, Ni Guangbin, Xue Linhai, Ma Aiying, Liu Shuo, Hong Wei, Lv Dongmei. This standard replaces the standard previously issued as follows. TB/T 3122-2005, TB/T 3122-2010. Acoustic elements of railway sound barrier1 ScopeThis standard specifies terms and definitions, technical requirements, inspection methods, inspection rules for acoustic elements of railway sound barriers. This standard applies to the design, manufacture, product inspection of acoustic elements of railway sound barriers.2 Normative referencesThe following documents are essential to the application of this document. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this standard. GB/T 1036 Test method for coefficient of linear thermal expansion of plastics between -30 °C and 30 °C with a vitreous silica dilatometer GB/T 1040.1 Plastics - Determination of tensile properties - Part 1.General principles GB/T 1041 Plastics - Determination of compressive properties GB/T 1633 Plastics - Thermoplastic materials - Determination of Virat softening temperature (VST) GB/T 2410 Determination of the luminous transmittance and haze of transparent plastics GB/T 3947-1996 Acoustic terminology GB/T 5464 Non-combustibility test method for building materials GB 8624-2012 Classification for burning behavior of building materials and products GB/T 8626 Test method of flammability for building materials GB/T 9341 Plastics - Determination of flexural properties GB/T 10299 Test method for hydrophobic nature of thermal insulation GB/T 14153-1993 General rule of test method for impact resistance of rigid plastics by means of falling weight3 Terms and definitionsThe terms and definitions, which are defined in GB/T 3947-1996, as well as the following terms and definitions, apply to this document. For ease of use, some terms and definitions in GB/T 3947-1996 are repeated below. 3.1 Railway sound barrier A structure, which is built on both sides of a railway line, to reduce the impact of train running noise on the acoustic environment. 3.2 Acoustic elements of sound barrier A unit in a sound barrier, that functions as sound insulation and/or sound absorption. 3.3 Sound absorption coefficient The ratio -- of the sum of the sound power, which is absorbed by the interface (surface) or medium, plus the sound power, which is transmitted through the interface (wall or partition, etc.), TO the incident sound power, at a given frequency and condition. In general, the measurement conditions and frequencies shall be explained. The sound absorption coefficient is equal to the sum of the loss coefficient and the transmission coefficient. [GB/T 3947-1996, definition 12.38] 3.4 Noise reduction coefficient The arithmetic mean of sound absorption coefficients, which are measured at 250 Hz, 500 Hz, 1000 Hz, 2000 Hz, etc. It is calculated to two decimal places; the last digit takes 0 or 5. [GB/T 3947-1996, definition 12.43]4 Technical requirements4.1 Acoustic performance The sound absorption performance of a sound barrier's acoustic element is characterized by its noise reduction coefficient and sound absorption coefficient towards the sound source side. The sound insulation performance of sound barrier's acoustic elements is characterized by weighted sound reduction index and sound reduction index. It shall meet the following requirements. 4.2 Wind pressure resistance The wind pressure resistance performance of the acoustic elements of the sound barrier shall be evaluated, based on the requirements that it shall not occur functional impairment, residual deformation or damage; that the maximum elastic deflection shall not exceed LA/100 (wherein LA is the maximum free length of the acoustic element of sound barrier, the same below); that the residual deformation shall not exceed LA/500. 4.4 Fireproof performance The acoustic elements of organic synthetic transparent panels shall meet the requirements of grade B2 and above in GB 8624-2012. 4.5 Corrosion resistance The anti-corrosion performance of metal materials in acoustic elements of sound barriers is represented by salt spray resistance or coating adhesion. Salt spray resistance and coating adhesion shall meet the requirements in GB/T 17748-2016.The salt spray resistance grade is less than or equal to grade 1; the coating adhesion is grade 0. 4.6 Fatigue resistance Anti-fatigue tests shall be carried out, on the acoustic elements of sound barriers, on railway lines where the train's design running speed is over 200 km/h. After the anti- fatigue test is carried out, according to the test method of 5.7, there shall be no internal and external structural damage, such as. cracks, panel damage, bonding failure, hardware loosening and other functional disturbances.5 Inspection methods5.1 Sound absorption The test device, test method, specimen preparation for the sound absorption of acoustic elements of sound barrier shall comply with the relevant provisions in GB/T 20247. 5.2 Sound reduction The test device, test method, specimen preparation for the sound reduction of acoustic elements of sound barrier shall comply with the relevant provisions in GB/T 19889.3. 5.4 Impact resistance 5.5 Fireproof performance Test according to the corresponding test methods, in GB/T 8626, GB/T 20284, GB/T 14402, GB/T 5464. 5.6 Corrosion resistance Test according to the test method in GB/T 17748-2016. 5.7 Fatigue resistance Calculate the fatigue load, according to different materials, operating flow, operating speed; use a fatigue testing machine to perform 4 x 106 fatigue cycle tests, under sinusoidal cyclic load and vibration frequency of 4 Hz. 5.8 Waterproof performance Test according to the test method of GB/T 10299. 5.9 Appearance Visual inspection is carried out, under bright light conditions or under 40 W fluorescent lamps. 5.10 Properties of organic synthetic transparent plates6 Inspection rules6.1 Exit-factory inspection The product shall be inspected before leaving the factory, AND accompanied with an exit-factory inspection certificate. The exit-factory inspection only checks the appearance. 6.2 Type inspection The items and methods of type inspection are as shown in Table 3.Type inspection of the product shall be carried out, in the following cases. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of TB/T 3122-2019 be delivered?Answer: The full copy PDF of English version of TB/T 3122-2019 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of TB/T 3122-2019_English with my colleagues?Answer: Yes. 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