ARCHITECTURE AND URBAN DEVELOPMENT. RESTRUCTURING AND RESTORATION

NOISE EVALUATION METHOD IN A FLAT ROOM WITH EVENLY DISTRIBUTED LENSES

Vestnik MGSU 2/2014
  • Giyasov Botir Iminzhonovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Head of the Department of Architectural and Construction Design, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Matveeva Irina Vladimirovna - Tambov State Technical University (TSTU) , Tambov State Technical University (TSTU), 112E Michurinskaya str., Tambov, Russian Federation, 392032.
  • Makarov Aleksandr Mikhaylovich - Tambov State Technical University (TGTU) Candidate of Technical Sciences, Associate Professor, Department of Urban and Road Construction, Tambov State Technical University (TGTU), 112 E Michurinskaya street, Tambov, 392032, Russian Federation.

Pages 13-21

In civil and industrial buildings there are rooms, the height of which is significantly smaller than in the plan. Such spaces are flat. Distribution of the reflected sound energy depends substantially on the ratio of length to width and to height. These relations have a significant value to downturns. In flat space the reflected sound energy remains constant height along and varies only in terms of the distance from the sound source. This feature can substantially simplify the formulas for determining the density of the reflected energy. In such areas (rooms of various offices, manufacturing plants, etc.), a large number of equipment and work sources uniformly distributed in the area with approximately equal acoustic power are usually located. The equipment leads to further redistribution of the reflected energy. The technological equipment effect on the energy distribution depends on its sound absorption and sound absorption characteristics of the room. In order to assess the effectiveness of acoustic absorption it is necessary to find a method of calculating noise regime in flat areas, which will take into account the features of noise propagation there. The article presents a method for calculating noise for civil and industrial buildings, taking into account the peculiarities of noise fields in these areas and the presence of the scattering and absorbing sound equipment. The method is based on a statistical approach to the calculation of the reflected sound energy. The proposed calculation method and the computer program can solve the problem by evaluating the noise regime at all the design stages of noise control.

DOI: 10.22227/1997-0935.2014.2.13-21

References
  1. Antonov A.I., Ledenev V.I., Solomatin E.O., Gusev V.P. Metody rascheta urovney pryamogo zvuka, izluchaemogo ploskimi istochnikami shuma v gorodskoy zastroyke [Calculating Methods of Direct Sound Level Pinged by Flat Noise Sources in Urban Area]. Zhilishchnoe stroitel'stvo [House Construction]. 2013, no. 6, pp. 13—15.
  2. Antonov A.I., Ledenev V.I., Solomatin E.O. Raschety urovney pryamogo zvuka ot lineynykh istochnikov shuma, raspolagayushchikhsya na promyshlennykh predpriyatiyakh i v gorodskoy zastroyke [Direct Sound Level Calculation from Line Noise Sources Situated in Industrial Buildings and in Urban Areas]. Vestnik Volgogradskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. Seriya: Stroitel'stvo i arkhitektura [Proceedings of Volgograd State University of Architecture and Civil Engineering. Construction Series]. 2013, no. 31 (50), ch. 1, pp. 329—335.
  3. Ledenev V.I., Matveeva I.V., Makarov A.M. Metodika otsenki zvukopogloshchayushchikh kharakteristik tekhnologicheskogo oborudovaniya, razmeshchaemogo v proizvodstvennykh pomeshcheniyakh [Evaluation Method of Sound Absorbing Properties of Manufacturing Equipment Situated in Industrial Premises]. Vestnik Tambovskogo gosudarstvennogo tekhnicheskogo universiteta [Proceedings of Tambov State Technical University]. 2004, vol. 10, no. 4—2, pp. 1103—1108.
  4. Ledenev V.I., Makarov A.M. Raschet energeticheskikh parametrov shumovykh poley v proizvodstvennykh pomeshcheniyakh slozhnoy formy s tekhnologicheskim oborudovaniem [Calculation of Noise Fields Energy Parameters in Industrial Premises of a Complicated Form with Manufacturing Equipment]. Nauchnyy vestnik Voronezhskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. Stroitel'stvo i arkhitektura [Scientific Proceedings of Voronezh State University of Architecture and Civil Engineering. Construction and Architecture]. 2008, no. 2, pp. 94—101.
  5. Ledenev V.I., Antonov A.I., Zhdanov A.E. Statisticheskie energeticheskie metody rascheta otrazhennykh shumovykh poley pomeshcheniy [Statistical Energy Calculation Methods of the Reflected Noise Fields in Premises]. Vestnik Tambovskogo gosudarstvennogo tekhnicheskogo universiteta [Proceedings of Tambov State Technical University]. 2003, vol. 9, no. 4, pp. 713—717.
  6. Ledenev V.I. Statisticheskie energeticheskie metody rascheta shumovykh poley pri proektirovanii proizvodstvennykh zdaniy [Statistical Energy Calculation Methods of Noise Fields in the Process of Industrial Buildings Design]. Tambov, 2000, 156 p.
  7. Antonov A.I., Ledenev V.I., Solomatin E.O. Kombinirovannyy metod rascheta shumovogo rezhima v proizvodstvennykh zdaniyakh teploelektrotsentraley [Combined Calculation Method of Noise Mode in Industrial Buildings of Thermal Stations]. Nauchnyy vestnik Voronezhskogo gosudarstvennogo arkhitekturno-stroitel'nogo universiteta. Stroitel'stvo i arkhitektura [Scientific Proceedings of Voronezh State University of Architecture and Civil Engineering. Construction and Architecture]. 2011, no. 2, pp. 16—24.
  8. Gusev V.P., Zhogoleva O.A., Ledenev V.I., Solomatin E.O. Metod otsenki rasprostraneniya shuma po vozdushnym kanalam sistem otopleniya, ventilyatsii i konditsionirovaniya [Noise Distribution Evaluation Method in Air Vents of Heating, Ventilation and Conditioning Systems]. Zhilishchnoe stroitel'stvo [House Construction]. 2012, no. 6, pp. 52—54.
  9. Ledenev V.I., Matveeva I.V., Kryshov S.I. Inzhenernaya otsenka rasprostraneniya shuma v tonnelyakh i koridorakh [Engineering Evaluation of Noise Distribution in Tunnels and Passages]. Izvestiya Yugo-Zapadnogo gosudarstvennogo universiteta [News of Southwest State University]. 2011, no. 5 (38), ch. 2, pp. 393—396.
  10. Ledenev V.I., Voronkov A.Yu., Zhdanov A.E. Metod otsenki shumovogo rezhima kvartir [Evaluation Method of the Noise Mode of Flats]. Zhilishchnoe stroitel'stvo [House Construction]. 2004, no. 11, pp. 15—17.
  11. Ledenev V.I., Solomatin E.O., Gusev V.P. Otsenka tochnosti i granits primenimosti statisticheskikh energeticheskikh metodov pri raschetakh shuma v proizvodstvennykh pomeshcheniyakh energeticheskikh ob"ektov [Evaluation of Preciseness and Application Field of Statistical Energy Methods in the Process of Noise Calculation in Industrial Premises of Power Assets]. Academia. Arkhitektura i stroitel'stvo [Academia. Architecture and Construction]. 2010, no. 3, pp. 237—240.
  12. Kryshov S.I., Makarov A.M., Demin O.B. Prostranstvennoe zatukhanie i rasseyanie zvukovoy energii v proizvodstvennykh pomeshcheniyakh na rasseivayushchem zvuk oborudovaniya [Space Attenuation and Diffusion of Sound Energy in Industrial Premises on the Sound Diffusing Equipment]. Academia. Arkhitektura i stroitel'stvo [Academia. Architecture and Construction]. 2009, no. 5, pp. 196—199.
  13. Isimaru A. Rasprostranenie i rasseyanie voln v sluchayno-neodnorodnykh sredakh [Wave Distribution and Diffusion in Random Medium]. Moscow, Mir Publ., 1981, vol. 1, 281 p.
  14. Tikhonov A.N., Samarskiy A.A. Uravneniya matematicheskoy fiziki [Equations of Mathematical Physics]. Moscow, Nauka Publ., 1977.

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METHODOLOGY FOR DETERMINATION OF SOUND INSULATION OF APARTMENTS’ ENCLOSING STRUCTURES TO MEET NOISE PROTECTION REQUIREMENTS

Vestnik MGSU 10/2017 Volume 12
  • Zhogoleva Olga Aleksandrovna - Tambov State Technical University (TGTU) Candidate of Technical Sciences, Associate Professor, Department of Urban and Road Construction, Tambov State Technical University (TGTU), 112 E Michurinskaya str., Tambov, 392032, Russian Federation.
  • Giyasov Botir Iminzhonovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Head of the Department of Architectural and Construction Design, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Fedorova Olga Olegovna - Tambov State Technical University (TGTU) , Tambov State Technical University (TGTU), 112 E Michurinskaya str., Tambov, 392032, Russian Federation.

Pages 1153-1162

Subject: an important task in the design of internal enclosing structures of apartments is the establishment of their required soundproofing ability. At present, there is no reliable method for determining the required sound insulation and in this regard internal enclosures are designed without proper justification for noise protection. Research objectives: development of a technique for determining the required sound insulation of apartment’s internal enclosures to ensure an acceptable noise regime in the apartments’ rooms under the action of intra-apartment noise sources. Materials and methods: the methodology was developed on the basis of a statistical method for noise calculation in the apartments, treated as systems of acoustically coupled proportionate rooms, and with the help of a computer program that implements this method. Results: the technique makes it possible to generate, with the use of computer technologies, a targeted selection of internal enclosures of the apartment to meet their soundproofing requirements. Conclusions: the technique proposed in the article can be used at the design stage of apartments when determining the required soundproofing of partitions and doors. Using this technique, it is possible to harmonize the sound insulation ratio of individual elements among themselves and thereby guarantee a selection of internal structures for their acoustic and economic efficiency.

DOI: 10.22227/1997-0935.2017.10.1153-1162

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STATISTICAL METHOD OF APARTMENT NOISE LEVEL CALCULATION AND ITS EXPERIMENTAL VALIDATION

Vestnik MGSU 4/2017 Volume 12
  • Zhogoleva Olga Alexandrovna - Tambov State Technical University (TSTU) Assistant Lecturer, Department of Urban and Road Construction, Tambov State Technical University (TSTU), 112E Michurinskaya str., Tambov, Russian Federation, 392032.
  • Giyasov Botir Iminzhonovich - Moscow State University of Civil Engineering (National Research University) (MGSU) Candidate of Technical Sciences, Associate Professor, Head of the Department of Architectural and Construction Design, Moscow State University of Civil Engineering (National Research University) (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation.
  • Matveeva Irina Vladimirovna - Tambov State Technical University (TSTU) , Tambov State Technical University (TSTU), 112E Michurinskaya str., Tambov, Russian Federation, 392032.
  • Fedorova Olga Olegovna - Tambov State Technical University (TGTU) , Tambov State Technical University (TGTU), 112 E Michurinskaya str., Tambov, 392032, Russian Federation.

Pages 381-389

The noise regime in apartments is largely determined by intra-apartment sound sources. Appropriate noise level calculation methods are needed for its estimation. These methods include the statistical calculation method based on the diffuse sound field concept. However, at present, there are no studies of its applicability for the calculation of noise level in apartment as in systems of acoustically related rooms. The aim of the study was to establish the possibility of using the statistical calculation method to estimate the noise regime in an apartment as in a single acoustic space and to study the influence of acoustic connections between apartment rooms on noise formation. Studies of statistical calculation method capabilities were made by comparing the results of calculations with the experimental data obtained for various planning apartment solutions including various acoustic connections between rooms. Calculations were carried out using the developed computer program. It is established that the calculation accuracy of the statistical method corresponds to the requirements for methods of calculating air noise level in civil buildings. The method adequately reacts to variations in the acoustic connection between the apartment rooms as elements of a single system of acoustically related volumes. The statistical method of calculating air noise levels, as it is proposed in the article, can be effectively used in calculating the noise levels that occur in apartments from in-apartment sources. The method adequately estimates noise regime variations at changes both the noise source position in the volume of the apartment and acoustic connections between its rooms. It can be effectively used in developing measures for the acoustic apartment improvement.

DOI: 10.22227/1997-0935.2017.4.381-389

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