DE19934810B4 - Noise barrier next to driveways - Google Patents

Abstract

The anti-noise barrier for railway tracks (1) consists of a bank of sound-absorbing material, e.g. earth, which is faced on the side directed towards the track with wood fibre panels (5) with a roughened front (6), a stabilising layer (7) being positioned between them. A wall of transparent panels (4) held together by double-T profiles (9) is mounted on top of the bank.

Description

Either in addition to busy motor roads as well as railway lines you have as noise protection for the Inhabited next to these driveways inhabited environment airborne sound absorbing Walls built.

In In this context, it is known to such walls of plantable earth walls create. These require a large footprint due to the necessary Slope angle.

In addition, it has been provided to avoid the large base of steel skeleton or concrete structures formed arrangements, which also have terraced stacked pockets, which can also be filled with soil and planted. On the vehicle side, these arrangements optionally have superimposed planks of a sound-reflecting or absorbing material ( CH 676 260 A5 ).

Further it counts to the state of the art, noise barriers Assemble aluminum cassettes and if necessary with transparent visual elements (brochures "Noise protection system made of aluminum" or "Aluminum system construction for transparent Noise protection "of Bongard GmbH & Co. KG, Nentershausen).

The CH 590 366 A5 also shows a noise barrier made of aluminum cassettes.

The FR 2 612 964 A1 discloses a noise barrier made of a combination of transparent and non-transparent wall elements.

Also are comparatively narrow noise barriers known which are formed in two layers. The layer facing away from the track forms a stable carrier, while on the way on this carrier Airborne absorbing, not self-supporting absorption panels are attached. These absorption panels have vertical, in cross-section trapezoidal Grooves. They consist of a dried in forms wood pulp with stiffening and possibly coloring additives (prospectus "LES MURS ANTIBRUIT" of Béton Bois système, Gueret, France).

A similarly trained noise barrier is the U.S. Patent 4,325,457 refer to. In this case, narrow planks are arranged one above the other, the nut and feathery dotted together and fixed to double-T-shaped straps. The planks are constructed in two layers. One layer may be made of a noise absorbing material which is stiffened by horizontal reinforcing bars while the second layer is made of concrete. In the concrete layer is preferably still cast a wire mesh.

all known noise barriers is too peculiar that the professional world is a compromise between the requirements of noise protection, the installation effort and the required floor space on the one hand, and the aesthetics corresponding to the human sense of form and color on the other hand. this leads to inevitably to that, so far no noise barrier was built, which uncompromising in all these demands united.

Of the Invention is based on the prior art, the task, a noise barrier in addition to roadways, especially track sections, to create at comparatively low manufacturing and assembly costs both optimal noise protection offers as well as from the aesthetics is designed accordingly and travelers look into the environment not denied.

The solution This object is achieved according to the invention in the features of the claim 1 seen.

The The invention therefore sees on both sides of the noise barrier in the lower altitude range, ie where, especially in track sections no clear view required is, an airborne sound absorbing design before, on the lane side targeted absorption plates from a dried wood pulp with roughened, in particular grooved, preferably vertically grooved front surfaces and integrated stabilization layers are provided. by virtue of the incorporated stabilization layers have the absorption plates now a self-supporting function. Consequently, they, as well as the known Viewing elements, simply inserted into the U-shaped channels of double-T-shaped vertical supports and be interchangeably positionally fixed. That way is a quick installation in a small footprint possible. Also a possibly necessary Exchange is possible at short notice.

On the side facing away from the track of the noise barrier is in the lower Height range plantable earth wall provided by a steel supporting skeleton with terraced one above the other arranged pockets is formed. This support skeleton can easily with the vertical supports to be united.

These special design of the noise barrier thus contributes on the one hand, the requirements of noise protection and the necessary transparency for one good view of the environment and on the other hand an aesthetic design easier to manufacture and assemble invoice. In the double-T-shaped vertical supports acts it is commercial Profiles erected next to a track without significant effort can be.

at the production of an absorption plate now only needs when casting the wood pulp slurry a stabilizing layer with inserted into the mold which then, after drying the wood pulp slurry, ensures that the absorption plate as such is self-supporting and without an additional backing can be mounted.

The Stabilizing layer consists of a commercial metal grid, which the rear side facing away from the track the absorption plate forms. In addition, the rear side edges of the Metal grid with angled Moldings provided, creating an additional stiffening of the absorption plate is reached, which also facilitates the positional fixation.

The Track side vertical edges of the absorption plate are with angle profiles jacketed. At this angle profiles anchor rods are welded on the inside, the extend into the material of the absorption plate and after the Solidify the wood pulp in this way, the angle profiles fix.

by virtue of the features of claim 2, wherein the front side of the absorption plate located leg of the profile iron, the frontal side legs the angle profiles can overlap in the production of the absorption plate the perfect location the stabilization layer (metal lattice) on the back of the absorption plate be guaranteed.

The Profile iron on the stabilizing layer are according to the Features of claim 3 for fixing the absorption plate in the channels the vertical supports used. These form the back the absorption plate arranged legs of the profile iron the carrier of clamping screws and clamping nuts. The clamping screws extend across holes in the thighs. Their heads, the can be supported on the inner sides of the flanges of the vertical supports, by corresponding relative rotation of the clamping nuts to the clamping screws transversely displaced and in this way the absorption plate to the vertical supports be perfectly fixed in position.

The Features of claim 4 allow in particular under sound absorbent aspects, an improved position fixation of the absorption plate in the channels the vertical supports. To are on the wayside legs of the angle profiles strands off an elastic material, e.g. Rubber or a corresponding plastic, established. When relocating the clamping screws then arrive on the one hand the heads of the Clamping screws on the inner sides of the flanges and on the other hand the strands on the insides of the opposite Flanges of vertical supports to the plant and fix thereby the absorption plate at the edge areas.

The Invention is described below with reference to the drawings embodiments explained in more detail. It demonstrate:

1 in vertical section a guideway with an adjacent noise barrier;

2 a longitudinal section through the representation of 1 along the line II-II;

3 a horizontal section through the representation of 2 along the line III-III;

4 a plan view of an absorption plate for the noise barrier of 1 to 3 ;

5 a frontal view of the absorption plate of 4 , partly in section, and

6 on an enlarged scale a horizontal section through the representation of 2 along the line VI-VI.

In the 1 is with 1 an existing track track for rail vehicles 2 designated. Next to the track 1 extends at a distance A noise barrier 3 , which is designed to absorb airborne sound on both sides in the lower height range UH and transparent viewing elements in the upper height range OH 4 in the form of discs.

As with common consideration of the 1 to 3 can be seen, are on the lane side in the lower altitude UH absorption plates 5 from a dried wood pulp with vertically grooved front surface 6 and an integrated stabilization layer 7 intended. These absorption plates 5 , which are described below on the basis of 4 to 6 are explained in more detail, are, in particular the 3 and 6 can be seen in the U-shaped channels 8th of double-T-shaped vertical support Zen 9 fixed interchangeable. Also the visual elements 4 are in these channels 8th fixed interchangeable.

The vertical supports 9 have anchoring plates at their lower ends 10 with which they are in the ground 11 are fixed ( 1 to 3 and 6 ).

On the road 1 facing away from the noise barrier 3 is located in the lower altitude range UH one of a steel support skeleton 12 with terraced pockets 13 interspersed and planted mound 14 , The supporting skeleton 12 is with the vertical supports 9 connected ( 1 and 3 ).

It is from the 1 to 3 to realize that the noise barrier 3 combined with optimal aesthetics both the function of airborne sound absorption and the good view for the travelers in the environment U.

Each absorption plate 5 owns on the track 1 facing side ( 4 to 6 ) vertically extending, juxtaposed trapezoidal grooves 15 , At the back of the absorption plate 5 is the stabilization layer 7 from a metal grid with horizontally and vertically extending ledges 16 . 17 intended.

In the production of the absorption plate 5 in a horizontal form, not shown, an existing of wood fibers porridge is filled into the mold. First of all, an angle profile is made on both sides 18 inserted, with welded inner anchor rods 19 are equipped ( 4 to 6 ). After filling the mold with the Holzfaserbrei last the stabilizing layer 7 embedded. This is on the rear side edges 20 with welded angled profile iron 21 Mistake. The profile irons 21 overlap with the frontal thighs 22 the frontal thighs 23 the angle profiles 18 , In this way, in the manufacture of the absorption plate 5 a perfect position orientation of the stabilizing layer 7 guaranteed. Due to the stabilization layer 7 Therefore, after drying the Holzfaserbreis is a self-supporting element. The angle profiles 18 encase the sideways vertical surfaces 33 the absorption plate 5 ,

To an absorption plate 5 between two vertical supports 9 To be able to fix the position are in the back thighs 24 the profile iron 21 Drilled holes in the clamping screws 25 be used. Both sides of the thigh 24 are clamping nuts 26 intended. By turning the clamping screws 25 relative to the clamping nuts 26 and countering the clamping nuts 26 can then fix the position of the absorption plate 5 between the insides 27 . 28 the flanges 29 . 30 the vertical supports 9 be made. This leaves in particular the 6 recognize that the road side to the the track 1 facing thighs 31 the angle profiles 18 sealing threads 32 are made of an elastic material, which then on the insides 28 the flanges 30 come to rest when the clamping screws 25 be moved axially.

It is just out of the 6 recognizable that in this way an extremely simple installation of the absorption plates 5 on the vertical supports 9 can be guaranteed.

1

roadway

2

track vehicle

3

Sound barrier

4

visual elements

5

absorption panels

6

Front surface v. 5

7

stabilizing layer

8th

Channels in 9

9

vertical supports

10

Anchoring plate v. 9

11

soil

12

supporting skeleton

13

Bags v. 14

14

earthwork

15

Grooves in 5

16

horizontal strips v. 7

17

vertical strips v. 7

18

angle sections

19

Anchor rods on 18

20

Side edges v. 7

21

sectional iron

22

frontal thighs v. 21

23

frontal thighs v. 18

24

rear legs v. 21

25

turnbuckles

26

clamping nuts

27

Inside pages v. 29

28

Inside pages v. 30

29

Flanges v. 9

30

Flanges v. 9

31

Thighs v. 18

32

sealing threads

33

Vertical edges v. 5

A

distance

OH

upper altitude range v. 3

UH

lower altitude range v. 3

U

environment

Claims (4)

Noise barrier next to driveways ( 1 ), in particular track tracks ( 1 ), which in the lower altitude range (UH) is designed to absorb airborne sound on both sides and in the upper height range (OH) transparent visual elements ( 4 ), in which in the lower height range (UH) on the track absorption plates ( 5 ) from a dried wood pulp with roughened front surfaces ( 6 ) as well as integrated stabilization layers ( 7 ) and how the visual elements ( 4 ) in the U-shaped channels ( 8th ) of double T-shaped vertical supports ( 9 ) are fixed interchangeable, and on the track ( 1 ) side facing away in the lower height range (UH) one from a supporting skeleton ( 12 ) with terraced pockets ( 13 ) interspersed earth wall ( 14 ), the stabilization layers ( 7 ) the the track ( 1 ) facing away rear sides of the absorption plates ( 5 ) and consist of metal lattices, which at the rear side edges ( 20 ) with welded angle-shaped profile bars ( 21 ), and in which the roadside vertical edges ( 33 ) of the absorption plates ( 5 ) with angle profiles ( 18 ), which are entrapped in the absorption plates ( 5 ) extending welded anchor rods ( 19 ) are equipped. Noise barrier according to claim 1, wherein the front side of the absorption plates ( 5 ) leg ( 22 ) of the profile iron ( 21 ) the frontal thighs ( 23 ) of the angle profiles ( 18 ). A noise barrier according to claim 1 or 2, wherein the rear of the absorption plates ( 5 ) arranged legs ( 24 ) of the profile iron ( 21 ) the carriers of clamping screws ( 25 ) and clamping nuts ( 26 ) form. Noise barrier according to one of the claims 1 to 3 in which the lane-side limbs ( 31 ) of the angle profiles ( 18 ) by sealing strands ( 32 ) made of an elastic material with respect to the inner sides ( 28 ) of the flanges ( 30 ) of the vertical supports ( 9 ) are distanced.