Classifications

• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
  • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
  • E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
  • E01F8/0023—Details, e.g. foundations
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
  • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
  • E01F8/0005—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement
  • E01F8/0047—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic used in a wall type arrangement with open cavities, e.g. for covering sunken roads
  • E01F8/0052—Grate-style, e.g. as wall facing
  • E01F8/0058—Grate-style, e.g. as wall facing with damping material, e.g. rockwool, sand
• • E—FIXED CONSTRUCTIONS
  • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
  • E01F8/00—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic
  • E01F8/02—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic specially adapted for sustaining vegetation or for accommodating plants ; Embankment-type or crib-type noise barriers; Retaining walls specially adapted to absorb or reflect noise
  • E01F8/021—Arrangements for absorbing or reflecting air-transmitted noise from road or railway traffic specially adapted for sustaining vegetation or for accommodating plants ; Embankment-type or crib-type noise barriers; Retaining walls specially adapted to absorb or reflect noise with integral support structure
  • E01F8/026—Live wall, e.g. interlaced twines

Definitions

• the present invention relates to a noise-absorbent and/or -reducing noise abatement screen intended for being erected along a line that is heavily exposed to noise, for instance a road, and comprising a relatively fiat, first wall element with a front and a back side, and made of a noise-absorbent and/or -reducing material; a second wall element that extends parallel with the first wall element and arranged in front of said front side, said second wall element being configured for being able to carry a vegetation mantle.
• branches or stems protects the growth support of the vegetation against excessive temperatures and thus also against scorching. If a metallic support face for the vegetation were to be used instead of branches or stems, as taught in WO 94/03679, the temperature of the growth support might become very elevated with an ensuing adverse effect on the vegetation. Furthermore the use of branches or stems imposes a reduced load on the environment.
• the first wall element is being defined by or includes batts of mineral wool, as stated in claim 4.
• batts of mineral wool as stated in claim 4.
• Configuration of the screen as featured in claim 5 makes it possible for the vegetation to root in the batt, the wall element absorbing rainwater.
• Figure 1 shows an exploded view of a screen according to the invention, consisting of a total of four wall elements
• Figure 2 shows the screen shown in Figure 1 , seen in a front view
• Figure 3 shows the screen shown in Figure 1 , seen in a schematical cross- sectional view from the side;
• Figures 4-6 show alternative embodiments of the one wall element.
• the screen 1 may comprise one single wall element 10 of the first type, whose front side 11 faces towards a single wall element 20 of the second type. It will be understood that the screen 1 is rarely mounted alone as shown in Figure 1 , but rather in combination with a number of corresponding screens 1 that are arranged in extension of each other for forming an elongate face where all the wall elements 20 of the second type are visible.
• the screens are typically erected along a road line that is heavily exposed to noise.
• the wall element 20 of the second type is configured as a rectangular, rigid frame with vertical, opposed frame elements 22,24 that are connected by horizontal frame elements 26,28 for forming the outer periphery of the frame.
• the frame elements 22,24 Preferably have a somewhat larger dimension than the horizontal frame elements 26,28.
• the wall element 20 is shown in further detail in Figure 2, and it will appear that the vertical frame elements 22,24 have extended portions 23,25 that are introduced in holes in the soil 2 that are formed in advance.
• the frame elements 22,24 that may advantageously be formed from timber or metal preferably serve to transmit the weight of the screen 1 to the base construction of the screen 1 that may alternatively be a foundation block of e.g. concrete to which the frame elements 22 are secured.
• the remaining parts of the frame can be made of metal.
• the frame comprises a number of rod elements 30 that are connected to the vertical frame elements 22,24 and that extend parallel with the horizontal frame elements 26,28.
• the frame comprises four rod elements 30 that are arranged at the same distance from each other.
• the frame comprises a braided structure of cut-off branches or stems 40 of willows wood that extend upwards along the expanse of the vertical frame elements 22,24.
• Relatively straight branches or stems 40 are selected that can be arranged next to each other in the entire width of the frame.
• the branches or the stems 40 it is usually sufficient to merely braid the same alternatingly to the front and back sides of the rod elements 30 as shown in Figure 3.
• the back side of the rod elements 30 is to be understood the side that faces towards the front side 11 of the wall element 10, whereas the front side of the rod elements 30 faces in the opposite direction.
• neighbouring branches or stems 40 are mounted in accordance with the re- verse pattern, as outlined by the dotted line in Figure 3, whereby the one stem or branch abuts on the front side of a rod element 30, whereas the second abuts on the back side of the rod element 30.
• a uniform, open structure is obtained, whereby the vegetation 7 is able to climb on the outside of the branches or the stems and attach in areas between the wall element 10 and the rod elements 30, behind the branches or the stems 40.
• Such arrangement imparts to the frame a resistance to deformation, since the forces generated by the slightly flexed neighbouring stems or branches 40 will, on a given rod element 30, be oppositely oriented.
• the rod elements 30 may be made of steel, timber, plastic or the like.
• Figure 4 shows an alternative embodiment of the wall element 20, wherein the frame constitutes a separate component with vertical frame elements 35,38 and horizontal frame elements 26,28 that form the outer periph- ery of the frame, and with rod elements 30 that extend between the vertical frame elements 35,38.
• the frame forms the wall element 20.
• the shown frame can advantageously be delivered from the manufacturer with the stems or branches 40 mounted thereon, the frame not being attached to the columns 22,24 until on the site of use as such for the screen 1 ; e.g. by screwing.
• the frame shown in Figure 4 is particular in that the rod elements 30 as well as the horizontal frame elements 26,28 are telescopic, whereby the frame dimensions can be adjusted slightly.
• the frame is to be mounted on columns 22,24 that are already arranged on the site of use, since small inaccuracies in the distance between the columns 22,24 may thereby be taken into account.
• the ability to be telescopic is obtained in that the horizontally extending elements 26,28,30 of the frame comprise a tap 70 mounted on the one frame element 35 and a tubular element 80 that is mounted on the second frame element 38 and that is able to receive the tap 70.
• the distance between the frame ele- ments 35, 38 can hereby be varied slightly, e.g. within an range of 1-10 cm, preferably 2-3 cm, as shown at the bottom of Figure 4.
• the frame elements 26,28 and the rod elements 30 have been extended relative to the vertical frame ele- ments 35,38 and thereby form tap-shaped protrusions 39 that are introduced into openings 21 formed in the columns 22,24.
• This solution is suitable for absorbing tolerances in the distance between the foundation for the columns 22,24 and is useful when the wall element 20 consisting of the columns and the frame area are assembled prior to attachment to the foundation.
• Figure 6 shows a solution in which two steel columns 22', 24' form a delimitation for not shown rock wool batts that form the first wall element 10.
• the columns 22', 24' may optionally be anchored to the base construction, including to the ground 2 via a foundation.
• the frame that carries the branches or the stems 40 has vertical frame elements 35,38 that can advantageously be secured by welding to the columns 22', 24'.
• first wall element 10 may very well be manufactured of glass or concrete or it may be a longboard construction that provides the intended noise-absorbent or -reducing effect. What is important is merely that the first element 10 has an expanse that corresponds essentially to the expanse of the second element 20.
• the term 'relatively flat' as used in claim 1 is thus intended to designate a construction that primarily complies with this condition and whose shape is preferably substantially panel/plate-like.
• the density of the mineral fiber batts used for the first wall element 10 may lie between 25 and 450 kg/m 3 , preferably in the range of 40 to 200 kg/m 3 .
• the batts may be layered, the layers optionally being arranged such that a central layer has a low density whilst two or more coplanar layers have a higher density.
• the further coplanar layers may be arranged such that layers most distant from the central layer have the highest density.
• the mean density of the mineral fiber batt is between 80 and 150 kg/m 3 , most preferably between 100 and 150 kg/m 3 .
• the thickness of the mineral fiber batt is preferably between 10 and 40 cm.
• the exposed surface of the wall element 10 may be defined by a surface layer providing protection against the weather and mechanical forces, the layer preferably being defined by a fibrous web, e.g. a glass fiber web.

Landscapes

• Engineering & Computer Science (AREA)
• Architecture (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Sustainable Development (AREA)
• Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
• Percussion Or Vibration Massage (AREA)
• Golf Clubs (AREA)
• Building Environments (AREA)
• Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=8159305

Family Applications (1)

Country Status (6)

Cited By (2)

Families Citing this family (1)

Family Cites Families (5)

• 2000
  • 2000-12-15 DK DK200000379U patent/DK200000379U3/da active
• 2001
  • 2001-12-14 AT AT01270656T patent/ATE417155T1/de not_active IP Right Cessation
  • 2001-12-14 AU AU2002221572A patent/AU2002221572A1/en not_active Abandoned
  • 2001-12-14 DE DE60136952T patent/DE60136952D1/de not_active Expired - Fee Related
  • 2001-12-14 EP EP01270656A patent/EP1341969B1/fr not_active Expired - Lifetime
  • 2001-12-14 WO PCT/DK2001/000830 patent/WO2002048463A1/fr not_active Application Discontinuation

Non-Patent Citations (1)

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