NO120894B - - Google Patents
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- Publication number
- NO120894B NO120894B NO47768A NO47768A NO120894B NO 120894 B NO120894 B NO 120894B NO 47768 A NO47768 A NO 47768A NO 47768 A NO47768 A NO 47768A NO 120894 B NO120894 B NO 120894B
- Authority
- NO
- Norway
- Prior art keywords
- glass
- sound
- thickness
- frequency
- glass sheets
- Prior art date
Links
- 239000011521 glass Substances 0.000 claims description 31
- 239000003292 glue Substances 0.000 claims description 2
- 238000009413 insulation Methods 0.000 description 16
- LULCPJWUGUVEFU-UHFFFAOYSA-N Phthiocol Natural products C1=CC=C2C(=O)C(C)=C(O)C(=O)C2=C1 LULCPJWUGUVEFU-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920001021 polysulfide Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/162—Selection of materials
- G10K11/168—Plural layers of different materials, e.g. sandwiches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
- B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
- B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
- B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
- B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
- B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
- B32B17/10045—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets with at least one intermediate layer consisting of a glass sheet
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B1/86—Sound-absorbing elements slab-shaped
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/54—Slab-like translucent elements
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
- E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
- E06B3/67—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light
- E06B3/6707—Units comprising two or more parallel glass or like panes permanently secured together characterised by additional arrangements or devices for heat or sound insulation or for controlled passage of light specially adapted for increased acoustical insulation
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B7/00—Special arrangements or measures in connection with doors or windows
- E06B7/28—Other arrangements on doors or windows, e.g. door-plates, windows adapted to carry plants, hooks for window cleaners
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8457—Solid slabs or blocks
- E04B2001/8461—Solid slabs or blocks layered
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/82—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to sound only
- E04B1/84—Sound-absorbing elements
- E04B2001/8457—Solid slabs or blocks
- E04B2001/8461—Solid slabs or blocks layered
- E04B2001/8466—Solid slabs or blocks layered with an intermediate layer formed of lines or dots of elastic material
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Multimedia (AREA)
- Electromagnetism (AREA)
- Building Environments (AREA)
- Joining Of Glass To Other Materials (AREA)
- Securing Of Glass Panes Or The Like (AREA)
- Laminated Bodies (AREA)
Description
Lydisolerende glasselement. Sound-insulating glass element.
Foreliggende oppfinnelse har til formål et lydisolerende byggeelement som er satt sammen av to eller flere glassplater. Lignende byggeelementer utformet for å gi varmeisolasjon kalles ofte "isolerglass". Det nye ved oppfinnelsen fremgår av kravene. Bakgrunnen for oppfinnelsen skal beskrives i det følgende. The object of the present invention is a sound-insulating building element which is assembled from two or more glass plates. Similar building elements designed to provide thermal insulation are often called "insulating glass". The novelty of the invention appears from the claims. The background for the invention shall be described in the following.
Innen bygningsakustikken har man normerte, frekvensveide lydisoleringskrav i frekvensområdet loo - 315o Hz. Within building acoustics, there are standardized, frequency-weighted sound insulation requirements in the frequency range loo - 315o Hz.
For glasstykkelser under 4 mm bestemmes luftlydisoleringsevnen uttrykt med "reduksjonstallet" for visse frekvenser bare av glassets flatevekt. Reduksjonstallet R stiger med 6 dB for hver fordobling av frekvensen efter følgende formel: For glass thicknesses below 4 mm, the airborne sound insulation performance expressed by the "reduction number" for certain frequencies is determined only by the surface weight of the glass. The reduction factor R increases by 6 dB for each doubling of the frequency according to the following formula:
hvor f er frekvensen i Hz og M er glassets flatevekt i kg/m . where f is the frequency in Hz and M is the surface weight of the glass in kg/m .
Det er reduksjonstallet ved de laveste frekvenser som bestemmer hvilket normkrav med hensyn til lydisoleringen som oppfylles. Ved de høyeste frekvenser får man en "overflodig" isolering. Når glasset har en tykkelse på mer enn 4 mm, vil også stivheten påvirke reduksjonstallet i det ovennevnte fre-kvensområde. Omkring koincidensfrekvensen f cfår man dårligere isolering enn den ovennevnte formel angir. It is the reduction figure at the lowest frequencies that determines which standard requirement with regard to sound insulation is met. At the highest frequencies, you get an "abundant" insulation. When the glass has a thickness of more than 4 mm, the stiffness will also affect the reduction factor in the above-mentioned frequency range. Around the coincidence frequency f c you get poorer insulation than the above formula indicates.
Glassets koincidensfrekvens får man ifølge formelen The coincidence frequency of the glass is obtained according to the formula
hvor M oc er glassets flatevekt i kg/m 2 og B glassets bøynings- where M oc is the surface weight of the glass in kg/m 2 and B is the glass's bending
stivhet pr. enhetsbredde i Nm. stiffness per unit width in Nm.
For 6 mm glass ligger f omkring 2500 Hz, dvs. For 6 mm glass, f is around 2500 Hz, i.e.
straks under den øvre frekvensgrense på 3150 Hz. Man har altså immediately below the upper frequency limit of 3150 Hz. So you have
ved de høyere normfrekvenser et overskudd med hensyn til de normkravene, som gjør at den dårligere lydisolering i nærheten av koincidensfrekvensen kan aksepteres. at the higher standard frequencies, an excess with respect to the standard requirements, which means that the poorer sound insulation near the coincidence frequency can be accepted.
Hvis man velger tykkere glass, dvs. glass med lavere koincidensfrekvens enn 2500 Hz, vil resonanseffekten redusere isoleringen i så høy grad at man istedenfor å oppfylle et høyere normkrav bare kan oppfylle et lavere. Herved vil grensen for mulig lydisolering tilsynelatende være nådd med et 6 mm tykt glass. If you choose thicker glass, i.e. glass with a lower coincidence frequency than 2500 Hz, the resonance effect will reduce the insulation to such an extent that instead of meeting a higher standard requirement, you can only meet a lower one. In this way, the limit for possible sound insulation will apparently be reached with a 6 mm thick glass.
Det har imidlertid overraskende vist seg at dette However, it has surprisingly turned out that this
allikevel ikke er tilfelle, og at man ved å gå frem ifølge foreliggende oppfinnelse på en enkel måte kan oppnå bedre lydisolasjon ved mindre samlet tykkelse av glasselementet. is still not the case, and that by proceeding according to the present invention in a simple way, better sound insulation can be achieved with a smaller overall thickness of the glass element.
Oppfinnelsen er basert på at et element med to eller flere glassplater, som ikke er over 6 mm tykke, og som ikke er fast forbundet langs kantene, ifølge formel (2) ikke får lavere koincidensfrekvens enn den tykkeste glassplate som inngår i elementet. Forholdet Mg/B blir nemlig bare ubetydelig forandret så lenge platene ikke forbindes stivt med hverandre. The invention is based on the fact that an element with two or more glass plates, which are not over 6 mm thick, and which are not firmly connected along the edges, according to formula (2), does not get a lower coincidence frequency than the thickest glass plate included in the element. The ratio Mg/B is only slightly changed as long as the plates are not rigidly connected to each other.
Av optiske grunner kan imidlertid platene i praksis For optical reasons, however, the plates can in practice
ikke stables direkte på hverandre. Det oppstår nemlig bryt-nings fenomener i den form av Newtons ringer, som gjør gjennom-sikten dårligere. Med distansemellomlegg ved kantene av glassplatene kan disse fenomener hindres. Derved innføres imidlertid en ny komplikasjon. Med luftspalter mellom glass-ene får man i systemet en resonansfrekvens i nærheten av hvilken det kan oppstå en dårligere isolering. Glassplatene bør av denne anledning ligge så nær hverandre som mulig uten ved noe punkt å komme i berøringmed hverandre som følge av variasjoner i glasstykkelsen. Spaltebreddens middelverdi bør aldri ligge over 0,5 mm, hvilket med alle glassplater 3 mm tykke, gir resonansfrekvens 1350 Hz og med alle glassplater 6 mm tykke, gir resonansfrekvens 1000 Hz. Spalten og kant-forbindelsen oppnås ved å legge en streng av ikke herdende lim langs kantene av glassplatene og derefter presse glassplatene sammen inntil den ønskede spaltebredde oppnås. Et passende lim består av syntetisk gummi på polysulfidbasis (tiokol) eller polyuretanbasis. not stacked directly on top of each other. Refraction phenomena occur in the form of Newton's rings, which make visibility worse. With spacers at the edges of the glass panels, these phenomena can be prevented. This, however, introduces a new complication. With air gaps between the glasses, you get a resonant frequency in the system close to which poorer insulation can occur. The glass plates should therefore lie as close to each other as possible without at any point coming into contact with each other as a result of variations in the glass thickness. The gap width's mean value should never exceed 0.5 mm, which with all glass plates 3 mm thick gives a resonance frequency of 1350 Hz and with all glass plates 6 mm thick gives a resonance frequency of 1000 Hz. The gap and edge connection is achieved by laying a string of non-hardening glue along the edges of the glass sheets and then pressing the glass sheets together until the desired gap width is achieved. A suitable adhesive consists of synthetic rubber on a polysulphide base (thiocol) or polyurethane base.
Nedenfor er gjengitt resultatene av forsøk utført ved Chalmers Tekniska HSgskola, GCteborg, med sandwichele-menter bestående av to glassplater av en tykkelse på 3 mm, Below are the results of tests carried out at Chalmers Tekniska HSgskola, GCteborg, with sandwich elements consisting of two glass plates of a thickness of 3 mm,
og en mellomliggende luftspalte på henholdsvis 0,1 mm, and an intermediate air gap of 0.1 mm respectively,
0,4 mm, 1,6 mm, 5 mm, 10 mm, 40 mm og 80 mm. 0.4mm, 1.6mm, 5mm, 10mm, 40mm and 80mm.
I den nedenstående tabell betegner Rm gjennom-snittstallet for lydreduksjpnen målt i dB mens i er isola-sjonsindeksen,ifølge ISO R 717. In the table below, Rm denotes the average figure for the sound reduction measured in dB, while i is the insulation index, according to ISO R 717.
Det fremgår av denne tabell at lydisolasjonen er konstant fra 0,1 mm til 0,4 mm luftmellomrom og synker ved økende luftmellomrom for derefter å stige langsomt, slik at det først ved 4o mm luftmellomrom oppnås samme lydisolasjon som ved 0,1 mm. It appears from this table that the sound insulation is constant from 0.1 mm to 0.4 mm air gap and decreases with increasing air gap and then rises slowly, so that the same sound insulation as with 0.1 mm is only achieved at 40 mm air gap.
Det som i første rekke er overraskende ved foreliggende oppfinnelse er, som det vil forståes, at mens man tidligere trodde at man måtte øke tykkelsen av luftspalten i et byggeelement bestående av to glassplater for å forbedre lydisolasjonen, oppnår man ved å gå frem ifølge oppfinnelsen en økning av lydisolasjonen ved å anvende et tynnere luftmellomrom enn tidligere vanlig. What is primarily surprising about the present invention is, as will be understood, that while it was previously thought that one had to increase the thickness of the air gap in a building element consisting of two glass plates in order to improve the sound insulation, by proceeding according to the invention one achieves a increasing the sound insulation by using a thinner air gap than previously usual.
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE182867A SE323493B (en) | 1967-02-09 | 1967-02-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
NO120894B true NO120894B (en) | 1970-12-21 |
Family
ID=20258908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO47768A NO120894B (en) | 1967-02-09 | 1968-02-07 |
Country Status (6)
Country | Link |
---|---|
BE (1) | BE710517A (en) |
DE (2) | DE1709322B2 (en) |
DK (1) | DK123878B (en) |
GB (2) | GB1222092A (en) |
NO (1) | NO120894B (en) |
SE (1) | SE323493B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE344093B (en) * | 1970-05-28 | 1972-03-27 | Akustikbyran Ab | |
CH615244A5 (en) * | 1976-05-20 | 1980-01-15 | Cardinale Raffaele | |
US4041663A (en) * | 1976-07-30 | 1977-08-16 | Ppg Industries, Inc. | Reducing solar radiation transmittance of installed glazing |
DE9010087U1 (en) * | 1989-07-13 | 1990-09-27 | Degussa Ag, 6000 Frankfurt | Acrylic glass panels suitable as noise protection elements |
-
1967
- 1967-02-09 SE SE182867A patent/SE323493B/xx unknown
-
1968
- 1968-02-07 DE DE19681709322 patent/DE1709322B2/en not_active Ceased
- 1968-02-07 DE DE19681658890 patent/DE1658890C3/en not_active Expired
- 1968-02-07 NO NO47768A patent/NO120894B/no unknown
- 1968-02-08 BE BE710517D patent/BE710517A/xx unknown
- 1968-02-08 DK DK50068A patent/DK123878B/en unknown
- 1968-02-09 GB GB643668A patent/GB1222092A/en not_active Expired
- 1968-02-09 GB GB5287270A patent/GB1223540A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB1223540A (en) | 1971-02-24 |
GB1222092A (en) | 1971-02-10 |
SE323493B (en) | 1970-05-04 |
BE710517A (en) | 1968-06-17 |
DE1658890C3 (en) | 1975-07-24 |
DK123878B (en) | 1972-08-14 |
DE1709322A1 (en) | 1972-03-09 |
DE1658890A1 (en) | 1970-07-09 |
DE1709322B2 (en) | 1978-04-06 |
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