EP3707318A1 - Structure de toit insonorisante d'un atelier présentant une durée de réverbération réduite - Google Patents

Structure de toit insonorisante d'un atelier présentant une durée de réverbération réduite

Info

Publication number
EP3707318A1
EP3707318A1 EP18807883.6A EP18807883A EP3707318A1 EP 3707318 A1 EP3707318 A1 EP 3707318A1 EP 18807883 A EP18807883 A EP 18807883A EP 3707318 A1 EP3707318 A1 EP 3707318A1
Authority
EP
European Patent Office
Prior art keywords
roof
sound
absorber
absorbing
hall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP18807883.6A
Other languages
German (de)
English (en)
Inventor
Christian Hoppe
Elmar Johannes Anton Tober
Ronald Tschiersch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liaver GmbH and Co KG
Original Assignee
Liaver GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Liaver GmbH and Co KG filed Critical Liaver GmbH and Co KG
Publication of EP3707318A1 publication Critical patent/EP3707318A1/fr
Pending legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/001—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation characterised by provisions for heat or sound insulation
    • 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
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00—Roofs; Roof construction with regard to insulation
    • E04B7/02—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs
    • E04B7/022—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs consisting of a plurality of parallel similar trusses or portal frames
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00—Roofs; Roof construction with regard to insulation
    • E04B7/02—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs
    • E04B7/04—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs supported by horizontal beams or the equivalent resting on the walls
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • 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
    • 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
    • E04B1/99—Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or directing sound

Definitions

  • the present invention relates to a sound absorbing
  • Sound-absorbing elements to improve the room acoustics ie for better speech intelligibility and for hearing protection, have long been known.
  • Acoustic ceilings made of plasterboard or fiberboard improve room acoustics, reduce reverberation and convert sound energy into heat.
  • the width ⁇ ren acoustic wall coverings are known, such as the example ⁇ plates that are mounted at various angles and sizes on the walls and serve as a low-frequency absorber for absorption of low sound frequencies. For the absorption high
  • Sound frequencies is the use of perforated plates usual, which are attached at certain distances to the wall. Between plates and wall are sound-absorbing and sound-absorbing materials, such as foams or felts.
  • DE 10 2011 105 608 AI shows a sound absorber arrangement in the manner of an edge absorber for low frequencies.
  • Arrangement includes trough-shaped, preferably parallelepipedic container with befindlichem therein fibrous or porous absorbent material, which have a sound-impermeable or sound-permeable envelope.
  • the containers are placed in the corners or edges of a room on the wall or ceiling.
  • the sound absorber arrangement is characterized by the fact that all pages facing the room are sound-impermeable are formed. Only an obliquely, preferably senk ⁇ right arranged to a wall or the ceiling side is designed to be absorbent with a smaller area.
  • the containers used must have a minimum size, for which locally a suitable place is to be provided.
  • a preferred embodiment uses ⁇ example, a 400 mm x 500 mm thick homogeneous fibrous absorber which is arranged on the floor in proximity to a space edge.
  • EP 2868826 Al describes a reinforced concrete element, on the surface of a partially exposed, sound sublingually ⁇ beer forming, at least partially open-cell foamed material-is disposed. The reinforcement is partially enclosed by the foamed material. Shown is also a
  • Ceiling element which has a plurality of absorber strips of geopolymer.
  • the absorber strips used in the case of the application of the concrete element as a ceiling plate in the longitudinal direction but not in the corner areas between wall and ceiling.
  • Sound absorber elements made of a sintered expanded glass granulate, such as those supplied by Liaver GmbH & Co. KG under the brand name Reapor, are available on the market.
  • the absorbers protrude about 14 to 35 cm into the room, so that there is an air space on the back
  • the absorbers located between the absorber and the building wall.
  • the absorbers must be attached to the ceiling with special hangers.
  • WO 95/30804 A1 describes a sound absorption system for interior walls and ceilings. Sound-absorbing elements are there, for example, attached to the ceiling and extend to the wall. Likewise, an arrangement is shown in which both on the ceiling and on the wall corresponding
  • DE 2 347 136 A shows a self-supporting roof element for buildings, which rests with its two ends on a wall and is used in particular for halls.
  • Roof element has horizontal, in the longitudinal direction
  • the inner sides can be covered by the framework spanned areas with a mat. Since the surfaces to be covered with insulating material are obtuse to the horizontal
  • the object of the present invention is thus, starting from the prior art, an improved
  • Sound absorber arrangement according to claim 13.
  • the object is further achieved by a hall with reduced reverberation time according to claim 14.
  • the sound-absorbing roof construction according to the invention is a structural component of a hall with walls, several
  • roof trusses and with a sound-reflecting roof skin carried by the roof trusses are mounted on the side surfaces of several or all roof truss, which are composed of sound absorber elements. Between adjacent roof trusses with the absorber strips each extend a sound-reflecting portion of the roof skin with a width which is at least twice the average height of the roof truss.
  • the sound absorber arrangement according to the invention comprises a plurality of sound absorber elements which are arranged in a hall with walls and a roof construction closing the hall upwards.
  • the roof construction has several on the
  • Walls resting roof trusses and a roof covering worn by the roof trusses According to the invention, absorber strips are provided on both side surfaces of several or all roof trusses attached, which are composed of juxtaposed Schallabsorberele ⁇ ments.
  • the roof trusses are there
  • the roof trusses can have different constructions. It is only significant for the invention that they are two Provide side surfaces on which the absorber strips can be arranged. As a rule, the adjacent roof trusses are spaced several meters apart, preferably 4-8 m, in particular about 5-6 m.
  • the interior of the roof construction extends from the lower edge of the roof truss, which is usually formed by a lower flange, to the inner side of the roof skin, which rests on an upper flange of the roof truss ⁇ der.
  • bottom flange and top flange run at an angle to each other, so that the side surfaces of the roof truss have a trapezoidal or triangular shape.
  • the roof trusses have a height of between 300 and 1,500 mm for the relevant applications. Roof trusses with parallel or approximately paral ⁇ Lelen upper and lower flanges are also referred to as carriers or truss. Between the upper and lower chord, a bar-like or a flat infill can be arranged. The roof truss lies with its ends on the walls of the hall and can be used with great consequences
  • Sound absorber arrangement cover the absorber strip the side surfaces of the roof trusses substantially completely, possibly with the release of the upper and lower belt.
  • Absorber strip preferably has a width in
  • the absorber strips can, for example
  • Roof construction and the sound absorber arrangement come additional absorber strips are used which run along the upper edge of the walls and / or between adjacent roof trusses perpendicular to the side surfaces of the roof trusses in the roof construction. These further absorber strips only cover a small part of the roof skin between the roof trusses, in particular less than a quarter of the roof skin area.
  • Reflection surface is arranged, which extends between the upper ⁇ belt and the lower flange of the roof truss.
  • This Refle ⁇ xions preparation can be an integral part of the roof truss or as a separate component.
  • these first pass through the Schallabsorbe ⁇ Rdevice and learn while an attenuation emerge at the back thereof, then make - preferably after passing through an air gap - on the reflecting surface and thereby the sound absorber element is reflected back to there attenuated one more time to become.
  • the sound absorbing elements have a thickness of 20-65 mm, more preferably about 25 mm. Furthermore, it is advantageous if the sound absorber elements have a length ⁇ specific flow resistance in the range 7-15, preferably 8-12, more preferably about 10 kPa * s / m have. 4
  • the sound absorber elements consist of a non-ductile foam, in particular of a glass-based, acoustically effective and diffusion-open foam, which comprises expanded glass granules.
  • the sound absorber elements consist of expanded glass granules a grain size of 0.25 - 4 mm, wherein the granules are sintered in Plat ⁇ tenform or is connected to added binder, and wherein the length-specific Strömungswider ⁇ stand preferably in the range 9-11 kPa * s / m 4 .
  • the preferred length-specific flow resistance of the Schallabsorberele ⁇ ment can be easily adjusted by the grain sizes used, ie the particle size distribution in preferably plate-shaped sound absorber element and / or by the proportion of binder which is added to the expanding gas granules during manufacture.
  • the material used for the absorber strip is expedient ⁇ ßigerweise Suitable for wet rooms, frost-proof, non-flammable and very light. It also works fine
  • the sound absorber elements have a length-specific flow resistance Strö ⁇ in the range 7-15 kPa * s / m 4, preferably 9-11 kPa * s / m 4, said the flow resistance in the
  • the hall according to the invention with reduced reverberation time can serve different purposes, in particular be used as industrial or workshop, sports hall or swimming pool. It has walls and a roof construction, with the
  • Roof construction comprises a plurality of roof trusses resting on the walls and a roof skin supported by the roof trusses. At several or all roof trusses the sound absorber arrangement described above is arranged.
  • a significant advantage of the hall according to the invention realized with reduced reverberation time is that by arranging the absorber strip on the roof trusses a particularly high absorption of sound can be achieved. This high absorption effect is among others by the in this
  • the sound absorber arrangement can be easily retrofitted in existing halls and requires little installation space in the regularly unused
  • Sound absorber elements made of expanded glass granules with a particle size of 0.25 - 4 mm, wherein the granules are sintered in plate form or connected to added binder.
  • the invention thus also utilizes a combination of the aforementioned nature of the sound absorber elements and their arrangement in the hall.
  • further absorber strips extend at the upper ends of the walls of the hall.
  • the sound absorber arrangement is particularly suitable for attenuation in the frequency range from 250 Hz to 4 kHz. Further details and advantages of the invention
  • FIG. 1 shows a not-to-scale ceiling underside of a first embodiment of a hall according to the invention with reduced reverberation time
  • FIG. 2 shows a schematic diagram of the sound wave path on a roof skin and an absorber strip which is fastened to a roof truss;
  • Fig. 3 a not-to-scale ceiling soffit of a second embodiment of a hall with reduced reverberation time;
  • Fig. 4 is a detailed view of the arrangement of the Absorberstrei ⁇ fens on roof trusses in two subsequently placed embodiments;
  • Fig. 5 a detailed view of the arrangement of Absorberstrei ⁇ fens on the roof truss in two integrated
  • FIG. 6 shows a diagram for displaying measured values of the reverberation time in differently configured halls over a wide frequency range.
  • Fig. 1 shows a not-to-scale blanket ceiling view of a hall according to the invention Ol with reduced reverberation time.
  • the floor space of the hall extends for example to 21.5m x 17.5m.
  • the hall is equipped with an inventive
  • the hall Ol has walls 02 and three inner roof truss 03, which wear a roof skin 06 (Fig. 2). On the side surfaces of the roof truss 03 each absorber strip 04 are attached, which cover substantially the entire side surfaces.
  • the roof trusses covered on both sides with absorber strips are approximately 5.4 m apart in the example shown.
  • Each absorber strip 04 consists of one or preferably a plurality of sound absorber elements made of a non-ductile material
  • Foam preferably a glass-based foam with a Blähglasgranulatanteil. This material is well suited for sound insulation and can be easily processed.
  • the absorber strip has a width which is adapted to the height of the roof truss, and a thickness of, for example
  • the absorber strip 04 is preferably designed plate-shaped. To form an absorber strip several Schallabsorberimplantation are lined up with little or no gaps. Small distances between the
  • FIG. 2 shows in simplified form arranged on the roof truss 03 absorber strip 04. It can be seen that the roof covering 06 rests on the roof truss 03 and the absorber strip the
  • Fig. 3 shows a not-to-scale ceiling soffit of a second embodiment of the hall 01 with reduced
  • the floor space of the hall is again 21.5m x 17.5m. Except for the three inner roof truss 03 here are more absorber strips 07 to the arranged upper ends of the end walls and on the side walls between the roof trusses.
  • FIG. 4 shows a simplified cross-sectional view of the roof binder 03, which has a top flange 08, a bottom flange 09 and between them a stiffening truss 10.
  • To attach the absorber strip 04 are in this case
  • Holding profiles 11 attached to the roof truss. On the left side of the figure, the absorber strip between an upper and a lower holding profile 11, each at the top or
  • Retaining profile 11 are used, which is attached only to the top flange 08 and still the absorber strip on his
  • the upper edge and lower edge surrounds.
  • the holding profile 11 in this case has a sound-open rear side 13.
  • two absorber strip 04 which are open sound at its back, is located in preferred embodiments, a sound-reflecting
  • Roof truss and the absorber strip is positioned to reflect the absorber strip penetrating sound waves back into the absorber strip.
  • an air gap remains between the absorber strip and the reflection wall 12, which leads to a further diffraction of the sound waves, which positively influences the absorption due to interferences and impedances that occur.
  • Fig. 5 shows two further design options for the arrangement of the absorber strip 04 on the roof truss 03. This
  • Variants are particularly suitable if the absorber strips not only after the completion of the hall to the
  • Roof trusses are attached but the sound-absorbing Equipment of the roof truss is already made in the construction phase, preferably already in the production of roof trusses.
  • the absorber strips 04 are preferably in the
  • FIG. 6 shows in a diagram a plurality of measured value curves for the reverberation time over a wide frequency range.
  • the individual curves were recorded in the same hall with a floor area of 21.5m x 17.5m and a height of 4.9m.
  • Curve 1) - shown as a dash-dot line without marking - shows the course of the reverberation time in the original hall, d. H. without installation of the sound absorber arrangement.
  • the reverberation time is on average 1.52 s, which is significantly higher than that of DIN 18041 for voice environments
  • Curve 2) shown as a solid line with a square mark - shows the reverberation time after installation of the absorber strip according to the arrangement shown in Fig. 1 at the three inner roof trusses.
  • the absorber strips in this case have a width of 630 mm.
  • the reverberation time is reduced evenly across all frequencies to an average of 0.93 s.
  • Curve 3) -shown as a dashed line with rhombus marking-shows the reverberation time in the hall when, in addition to the absorber strips on the roof trusses, further absorber strips having a width of 630 mm encircling the side and end walls corresponding to the one in FIG
  • the acoustic absorption performance is only slightly improved by the additional installation.
  • the reverberation time is 0.86 s.
  • shown - shows the reverberation time in the hall again according to the arrangement of FIG. 1.
  • Absorber strips are located only on the three inner roof trusses. However, the width of the absorber strip was doubled to 1240 mm, with the same thickness. It turns out that in this way a significantly reduced reverberation time of 0.66 s can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Multimedia (AREA)
  • Building Environments (AREA)

Abstract

L'invention concerne une structure de toit insonorisante d'un atelier (01) présentant des parois (02), plusieurs fermes (03) portant par leurs extrémités sur les parois (02) et une couverture (06) réfléchissant le son supportée par les fermes (03). Sur les surfaces latérales de plusieurs des fermes (03) sont appliquées des bandes absorbantes (04) qui sont composées d'éléments insonorisants. Entre des fermes (03) adjacentes portant les bandes absorbantes (04) s'étend respectivement une section de la couverture (06) réfléchissant le son présentant une largeur qui s'élève au moins au double de la hauteur moyenne des fermes (03). L'invention concerne en outre un système insonorisant muni d'éléments insonorisants qui sont agencés dans un atelier (01) muni de parois (02) et d'une structure de toit fermant l'atelier vers le haut, la structure comprenant plusieurs fermes (03) supportant une couverture (06). Selon l'invention plusieurs bandes absorbantes (04) composées d'éléments insonorisants juxtaposés sont appliquées sur les deux surfaces latérales de plusieurs des fermes (03). L'invention concerne enfin un atelier (01) présentant une durée de réverbération réduite, lequel utilise le système insonorisant.
EP18807883.6A 2017-11-11 2018-11-08 Structure de toit insonorisante d'un atelier présentant une durée de réverbération réduite Pending EP3707318A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017126506.6A DE102017126506A1 (de) 2017-11-11 2017-11-11 Schallabsorberanordnung und Halle mit reduzierter Nachhallzeit
PCT/EP2018/080632 WO2019092115A1 (fr) 2017-11-11 2018-11-08 Structure de toit insonorisante d'un atelier présentant une durée de réverbération réduite

Publications (1)

Publication Number Publication Date
EP3707318A1 true EP3707318A1 (fr) 2020-09-16

Family

ID=64456932

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18807883.6A Pending EP3707318A1 (fr) 2017-11-11 2018-11-08 Structure de toit insonorisante d'un atelier présentant une durée de réverbération réduite

Country Status (8)

Country Link
US (1) US20200270860A1 (fr)
EP (1) EP3707318A1 (fr)
JP (1) JP2021502502A (fr)
CN (1) CN111615575A (fr)
AU (1) AU2018363745B2 (fr)
DE (1) DE102017126506A1 (fr)
RU (1) RU2769015C2 (fr)
WO (1) WO2019092115A1 (fr)

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SE507187C2 (sv) 1994-05-10 1998-04-20 John Fellert Ljudabsorptionssystem för innerväggar, innertak etc i byggnader samt förfarande för framställning av sådant ljudabsorptionssystem
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JPH10311105A (ja) * 1997-05-12 1998-11-24 Jutaku Toshi Seibi Kodan 防音天井構造
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CN206418644U (zh) * 2017-01-06 2017-08-18 山东飞越钢结构工程有限公司 一种建筑设备屋顶

Also Published As

Publication number Publication date
DE102017126506A1 (de) 2019-05-16
RU2020118742A (ru) 2021-12-13
US20200270860A1 (en) 2020-08-27
RU2020118742A3 (fr) 2022-01-26
AU2018363745A1 (en) 2020-06-04
WO2019092115A1 (fr) 2019-05-16
JP2021502502A (ja) 2021-01-28
AU2018363745B2 (en) 2024-05-02
RU2769015C2 (ru) 2022-03-28
CN111615575A (zh) 2020-09-01

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