DE8535183U1 - Construction element for noise barriers - Google Patents

Description

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The innovation concerns a component for noise barriers in the form a plate; it also relates to noise barriers formed from a large number of such components.

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Noise barriers are built next to roads to reduce traffic! erected, which in the simplest case is formed from earth waves are. Lack of space forces the use of concrete structures, whereby Concrete slabs are used to advantage when very cramped Conditions exist. At a height of 3 m, such concrete slabs have a weight based on the length of approximately one 1 t. Should the noise protection wall be continuously

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buildings are continued, there are considerable static ■ Problems. Retrofitting existing bridges with

Such noise barriers are therefore only possible if the _

The bridge structure is oversized from the start. New Bridges ™

Structures could be equipped in this way, but this requires an I.

economically very expensive construction based on the statics |

way. *

This results in the task on which the innovation is based,

according to which such plate-shaped components are further formed yyyy

that bridge structures should also be designed for normal Burdens with from Plal can be provided.

I Loads from noise barriers made up of panels ί

This object is achieved according to the innovation in that the i plate is formed from polymer concrete and has a large number of longitudinal tubes, the polymer concrete from 14 to 16% synthetic resin with coarser quartz sand 2-4 and a mixture of quartz sand preferably formed from equal parts 0.2 to 2 |

and powdered lime 0 to 1. Through the use of polymer concrete | it is possible to create a lightweight panel in which | the cavities of the tubes further saved mass and so the weight is significantly reduced. The synthetic resin is 1 to polyester resins or polyurethane resins with hardeners and accelerators | ger. The aggregates are, on the one hand, a coarser quartz sand

of grain 2 to 4 and on the other hand finer components that | from quartz sand 0.2 to 2 and lime powder 0 to 1 are formed. One advantageous mixture of the formed from these ingredients Polymer concrete consists of 15% resin, 40% coarse quartz sand 2-4

and 45% finer components, namely quartz sand 0.2-2 and lime powder 0-1, each in equal parts. It goes without saying It is also conceivable that the finer constituents consist solely of quartz sand, j alone of powdered lime, or that they are formed from another rock powder. The lightweight walls designed in this way can

can be assembled to form noise barriers, the bearing weight of which «

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around 15-17% of the weight of conventional concrete slab noise barriers is.

A further development is that the tubes are symmetrical to Central plane are arranged. It is also suggested that the Cross-sections of the tubes are elliptical with parallel to the transverse extension, form long semiaxes. Alternatively, it is proposed that the cross-sections of the tubes form circles. Through this The design of the tubes is an optimization between the hollow space of the tubes, which reduces the mass of the components, and the static stability of the plate against e.g. wind load is achieved.

In a preferred embodiment, the components have at least a reinforcement insert on one side between the tubes and the outer surface of the plate side. Will continue suggested that the reinforcement insert in the longitudinal direction paral-IeI having wires or threads running to the tubes. About that

jj addition, it is proposed that the longitudinal

\ Wires or threads are the warp threads of a fabric. In the end

it is proposed that the warp threads of the fabric of the reinforcement inserts are polyester threads. Alternatively, it is suggested that that at least the warp threads of the fabric of the reinforcement layers Glass fibers are. The introduction of reinforcement inserts is permitted further increasing the tube-to-cavity ratio to the volume of the component and thus a (relative) reduction in the mass of the component. A particularly good shot Lateral forces such as wind loads or the like are caused by the threads running in the longitudinal direction parallel to the tubes barren wires achieved, with a particularly easy produc- ^ eit is achieved when these longitudinal threads or

Wires are the warp threads of a fabric. Here is the term Wire can also be understood as plastic wire, e.g. in a plastic fabric, whose warp threads are monofilament. The use of polyester thread is advantageous in connection with polyester resins, as these threads can be easily poured. Alternatively

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is the use of fiberglass threads bound in synthetic resin Polymer concrete is also cheap, especially since no impairment of the fibers is to be expected, as is the case with the strongly alkaline one Cement-bound concrete is present.

Another proposal is that at least one of the two sides of the plate is provided with a cover layer. It is also proposed that the cover layer is a glass fiber mat. Closing 'i'iCu it is proposed that at least one of the side surfaces of the plate has a wall or stone structure. In order to achieve a visually appealing surface design and, in addition, a sealing of the surface that is favorable for a long service life, it is covered with a glass fiber mat, which can be provided with a structure on at least one side. Structure is understood here to mean both a plaster structure, including the stone mosaic of known synthetic resin plasters, as well as a wall or stone imitation provided with profiles as a joint / stone, the colors being selected according to the desired proportions. Different colors of the stone surfaces and the joints are of course also possible.

A noise protection wall made from the structural elements is formed according to a further proposal in that the structural elements are embedded between vertical posts, the tubes being arranged at right angles to the posts. This arrangement enables optimal utilization of the moment of resistance against forces acting on the side such as wind load and the like. It is further proposed that the posts have a polymer concrete over- ^ZU 9, with an outer structure or surface which corresponds to the structure or the surface of the panels. The polymer concrete coating on the posts allows the posts to be matched to the surface of the noise protection elements themselves, with their structure, which includes the plaster, wall or stone structure, being on the surface of the polymer concrete coating of the post

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continues. This will ensure the optical uniformity of the whole Noise protection wall reached.

The essence of the innovation is exemplified using Figure 1, which shows a section of the component.

A corner of the component 1 with the outer sides 2 and 3 is cut open. In the interior, arranged in the middle, there is a multiplicity of parallel tubes 4, the axis of which is in the longitudinal direction of the plate-shaped component 1 runs. Two of the Tubes 4 are partially cut. On both sides of the tubes 4 are reinforcement inserts 5 and 6 provided, which are formed by a fabric. The fabric - shown is a simple linen weave - consists of the warp threads 5.1 and 6.1 running in the longitudinal direction, parallel to the extension of the tubes. In the Fabric insert 6 are the weft threads crossing the warp threads 6.1 denoted by 6.2. The outside 2 of the component is with a Cover layer 7 covered, which consists of a glass fiber fleece, that with appropriate synthetic resin on the surface of the component applied and is firmly connected to this. This cover layer is the carrier of the external structure, which also consists of a plastic replica of a wall or stone structure. One static advantageous design of the component is given when the ratio of the width of the webs between the tubes to the tube diameter is in the range from 1: 3 to 1: 4, the wall thickness between the tubes 4 and the outer sides 2 or 3 corresponds to the web width between the tubes.

Claims (13)

1. Component for noise barriers in the form of a plate, characterized in that the plate (1) is formed from polymer concrete and has a plurality of longitudinal tubes (4), the polymer concrete from 14 to 18% synthetic resin with coarser quartz sand 2-4 as well with a mixture of quartz sand 0.2-2 and lime powder O - 1, which is preferably formed from equal parts. 2. Component according to claim 1, characterized in that the tubes (4) are arranged symmetrically to the central plane. 20th 3. Component according to claim 1 or 2, characterized in that the cross-sections of the tubes (4) form ellipses with long semiaxes parallel to the transverse extent. 4. The component according to claim 1 or 2, characterized in that the cross sections of the tubes (4) form circles. 30th 5. Component according to one of claims 1 to 4, characterized in that at least one side (2; 3) of the plate (1) with one between the tubes (4) and the outer surface of the plate side (2; 3) has a reinforcing insert (5; 6). 6. The component according to claim 5, characterized in that the reinforcing insert (5; 6) has wires or threads extending in the longitudinal direction parallel to the tubes (4). - 2.r .. ,, Sch 838-jS / if ItI ■ ■ ■ ■ 7. The component according to claim 6, characterized in that the wires or threads running in the longitudinal direction are the warp threads (5.1, 6.1) of a fabric. 8. The component according to claim 7, characterized in that at least the warp threads (5.1; 6.1) of the fabric of the reinforcing inserts (5,6) are polyester threads. 9. The component according to claim 7, characterized in that at least the warp threads (5.1; 6.1) of the fabric of the reinforcing inserts (5,6) are glass fibers. 10. The component according to one of claims 1 to 10, characterized in that at least one of the two sides (2,3) of the plate (1) is provided with a cover layer (7). 11. The component according to claim 10, characterized in that the cover layer is a glass fiber mat. 12. The component according to one of claims 1 to 11, characterized in that at least one of the side surfaces (2,3) of the plate (1) has a plaster, wall or stone structure. 13. Noise protection wall made from a component according to one or more of claims 1 to 12, characterized in that the components (1) are embedded between vertical posts, the tubes (4) being arranged at right angles to the posts. ! 4. Noise protection wall according to claim 13, characterized in that the posts have a polymer concrete coating with an outer structure or surface which corresponds to the structure or the surface of the panels (1).