Lub suab rwb thaiv tsev ntawm iav yog ntsuas los ntawm qhov hnyav ntawm lub suab rwb thaiv tsev Rw lossis lub suab kis tau tus mob STC (Sound Transmission Class), thiab chav tsev yog decibel (dB). Suav cov qauv siv Rw, thiab cov qauv European thiab Asmeskas feem ntau siv STC. Qhov tseem ceeb ntawm ob qhov kev ntsuas no txawv me ntsis. Tus nqi STC ntawm tib lub khob yog sib npaug los yog qis dua Rw, uas yog, nws nyuaj rau nce tus nqi STC. Txhawm rau txheeb xyuas lub suab rwb thaiv tsev ntawm iav, nws yog ib qho tsim nyog yuav tsum nkag siab txog txoj cai ntawm kev ua raws li lub suab rwb thaiv tsev ntawm iav, kev sib raug zoo ntawm kev xaav ntawm lub suab los ntawm tib neeg lub pob ntseg thiab lub suab rwb thaiv tsev, thiab tom qab ntawd rationally configure iav qauv. kom tau txais qhov zoo tshaj plaws suab rwb thaiv tsev nyhuv.
The Human Ear's Perception of Sound
Qhov ntau zaus ntawm tib neeg pob ntseg pom ntawm lub suab tsis yog nyob nruab nrab ntawm 20 thiab 16000 Hz. Qhov kev nkag siab ntawm lub suab yog cuam tshuam nrog qhov hnyav ntawm lub suab rwb thaiv tsev tus nqi raws li hauv qab no:
Lub suab rwb thaiv tsev yog nce los ntawm 10dB - qhov sib txawv ntawm kev hnov lus pom yog ob npaug, uas yog, lub suab pom tau raug txo los ntawm ib nrab;
Lub suab rwb thaiv tsev yog nce los ntawm 5dB - lub rooj sib hais tuaj yeem pom qhov sib txawv, txawm tias qhov hnov lus tsis zoo los yog tsis;
Lub suab rwb thaiv tsev yog nce los ntawm 3dB - qhov hnov lus tsuas pom qhov txawv me ntsis, tab sis tus neeg qab pob ntseg yuav tsis pom nws;
1dB nce hauv suab rwb thaiv tsev - yuav luag indistinguishable los ntawm tib neeg pob ntseg.
Qhov no qhia tau hais tias yog tias peb xav txhim kho lub suab rwb thaiv tsev ntawm lub iav, qhov hnyav ntawm lub suab rwb thaiv tsev Rw yuav tsum tau nce ntxiv los ntawm tsawg kawg yog 3dB, thiab yog tias peb xav tau kev txhim kho lub suab rwb thaiv tsev zoo ntawm iav, Rw yuav tsum tau nce ntxiv. yam tsawg kawg yog 5dB.
Glass Sound Insulation Formula
Lub suab rwb thaiv tsev ntawm iav yog lub logarithmic ua haujlwm ntawm qhov zoo ntawm lub iav thiab qhov zaus ntawm lub suab, thiab ua raws li cov cai hauv qab no:
R=20lgM plus 20lgf-47.2(dB)
In the formula:
R - the sound insulation of the glass, dB;
M - mass per unit area of glass, kg/m²;
f - the frequency of the incident sound, Hz.
Qhov tsuas yog qhov cuam tshuam rau lub iav yog qhov zoo ntawm lub iav, uas txhais tau hais tias thaum qhov loj ntawm lub iav tau txiav txim siab, lub iav tuab dua, lub suab rwb thaiv tsev zoo dua.
Txhim kho iav suab rwb thaiv tsev
Rau cov iav sib txawv, cov kev ntsuas hauv qab no tuaj yeem raug coj los txhim kho lub suab rwb thaiv tsev:
- Single piece of glass: The thickness of the glass can be increased to improve the sound insulation.
- Insulating iav: Ntxiv rau qhov ua kom cov iav tuab, qhov tuab ntawm cov roj txheej kuj tuaj yeem nce ntxiv, thiab cov pa roj inert Ar tuaj yeem ua kom zoo dua lub suab rwb thaiv tsev vim tias lub suab nthwv dej tawm hauv cov roj. raws li ib tug neeg kho tshuab nthwv dej ntawm longitudinal kev co, thiab qhov ntev ntawm propagation nrug, qhov siab dua molecular hnyav ntawm cov pa. Qhov loj dua qhov poob.
- Laminated iav: nce lub thickness ntawm iav los txhim kho lub suab rwb thaiv tsev, thiab qhov kev ntsuam xyuas ua pov thawj tias qhov nce ntawm cov thickness ntawm PVB tsis pab ntau.
Suab rwb thaiv tsev txhim kho kev txwv
Yuav kom tau txais lub suab rwb thaiv tsev zoo tshaj plaws, kev koom tes ntawm iav tuab, cua txheej, interlayer zaj duab xis, thiab lwm yam yuav tsum tau siv dav. Cov kev ua tau zoo qhia tau hais tias qhov zoo tshaj plaws iav configuration yog: tsis sib npaug thickness laminated iav ntxiv rau 16Ar ntxiv rau qhov sib npaug thickness laminated iav; Xav txog kev lag luam, koj tuaj yeem xaiv: tsis sib xws thickness laminated iav ntxiv rau 16Ar ntxiv rau qhov tsis sib xws ntawm ib lub iav. Lub thickness ntawm txhua daim iav constituting lub composite structural iav yog qhov zoo dua sib txawv kom lub resonance ncov ntawm lub iav yuav zam tau. Txawm li ntawd los, nws yog qhov nyuaj heev rau iav kom nce Rw ntau dua 40dB, thiab cov iav yuav tuab heev thaum nws nce mus rau 45dB.
