Sound insulation of multilayer glazing in separate covers

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Abstract

An engineering method for calculating the sound insulation of multilayer glazing with up to 5 glasses is presented. The calculation is based on analytical expressions for determining the coefficients of resonant and non-resonant sound transmission. The calculations take into account resonant frequencies of the “mass-elasticity-mass” type, calculated for systems with up to 4 degrees of freedom. Total losses in the material, radiation and outflow into adjacent structures were also taken into account. The results of measurements of sound insulation of 4–5 complex glazing, the corresponding design of noise-proof windows in separate covers and an assessment of the convergence of the results of calculations of sound insulation and experiment are shown. The results of measurements of multilayer glazing in combination with the KIV-125 air exchange device, as well as the results of measurements of noise-proof windows in separate covers with a special air exchange device are also presented.

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About the authors

S. N. Ovsyannikov

Tomsk State University of Architecture and Building (TSUAB); Research Institute of building physics (NIISF)

Author for correspondence.
Email: ovssn@tsuab.ru

Doctor of Sciences (Engineering)

Russian Federation, 2, Solyanaya Square, Tomsk, 634003; 21, Locomotive tr., 127238

A. S. Samokhvalov

Tomsk State University of Architecture and Building (TSUAB); Research Institute of building physics (NIISF)

Email: tomsk117@mail.ru

Engineer

Russian Federation, 2, Solyanaya Square, Tomsk, 634003; 21, Locomotive tr., Moscow, 127238

I. L. Shubin

Research Institute of building physics (NIISF)

Email: shuig@mail.ru

Doctor of Sciences (Engineering)

Russian Federation, 21, Locomotive tr., Moscow, 127238

References

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  7. Овсянников С.Н., Самохвалов А.С. Окна в раздельных переплетах с высокой тепло-звукоизоляцией // Строительные материалы. 2012. № 6. C. 42–43. EDN: PCFYCL. Ovsyannikov S.N., Samokhvalov A.S. Windows in separate bindings with high heat and sound insulation. Stroitel’nye Materialy [Construction Materials]. 2012. No. 6, pp. 42–43. (In Russian). EDN: PCFYCL
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Supplementary files

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2. Fig. 1. An oscillatory system with three degrees of freedom with four masses and three elastic elements

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3. Fig. 2. An oscillatory system with four degrees of freedom with 5 masses and 4 elastic elements

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4. Fig. 3. Sound insulation of four-layer glazing with dimensions of 1×1 m with a thickness of 4 mm and air gaps of 200 and 2×12 mm: 1 – calculation by formulas (6)–(12); 2 – experiment

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5. Fig. 4. Sound insulation of five–layer glazing with dimensions of 1×1 m with a thickness of 4 mm and air gaps of 12 mm, 200 and 2×12 mm: 1 – calculation by formulas (13)–(17); 2 – experiment

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6. Fig. 5. Measured sound insulation of glazing:1 – single glazing of 4 mm; 2 – double glazing in single bindings 4+12+4 ; 3 – triple glazing in single bindings 4+12+4+12+4; 4 – four-layer glazing in separate bindings 4+200+4+12+4+12+4 mm; 5 – five-layer glazing in separate bindings 4+12+4+200+4+12+4+12+4 mm

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7. Fig. 6. Sound insulation schedules for four-layer glazing 4+200+4+ +12+4+12+4 with a supply valve KIV-125 mm in the wall 410 mm: 1 – in the open state; 2 – in the closed state; 3 – glazing 4+12+ +4+200+4+12+4+12+4; 4 – sound insulation of the wall 410 mm

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8. Fig. 7. Sound insulation schedules for 5-layer glazing 4+12+4+200+ +4+12+4+12+4 with a supply valve KIV-125 mm in the wall 410 mm: 1 – in the open state; 2 – in the closed state; 3 – glazing 4+12+ +4+200+4+12+4+12+4 ; 4 – sound insulation of the wall 410 mm

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9. Fig. 8. Soundproofing of glazing in separate frames 4+16+4+ +200+4+16+4 with a supply valve with 3 turns: 1 – valve closed Rw(C; Ctr)=47(-1.4; -4.2); 2 – valve open Rw (C; Ctr)=37(-1.6; -3)

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10. Fig. 9. General view of a noise-proof window in separate bindings with an air exchange valve (patent No. 2549067)

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