EP0530512A1 - Plate elements system, in particular noise wall - Google Patents

Abstract

Transparent sheets of noise walls are usually clamped in in double-T supports; the supports are relatively wide and thus have an unaesthetic and disturbing effect in the environment. The new noise wall is to satisfy ZTV LSW 88 and have narrow supports. In the new plate-element system, the plates (3, 4) are arranged with partial overlap. In this region of partial overlap, cutouts (19) are provided. A fastening means (16) is connected to the support (2) through these cutouts (19) and presses the plate elements (3, 4) against the support (2). <IMAGE>

Description

The present invention relates to a panel system, in particular a noise barrier according to the preamble of claim 1.

Panel systems of the type described in the introduction are generally constructed from panels of several m², preferably transparent plastic panels, the panels being arranged next to one another and two adjacent panels each being held together by a support and fixed to the floor. This carrier is usually a double-T carrier, on one T of which the two adjacent plates rest against each other with some spacing and protected in a rubber profile. The plates are held by a flat steel which rests on the end regions of the plates facing away from the double-T support and which is connected to the double-T support by means of several fastening screws with the double-T support by the gap between the two plates .

A noise barrier of this type is easy to set up, is not expensive from the support elements and secures the panels in an acceptable manner. It is disadvantageous, however, that the supports are very wide posts, for example IBT 160, so that the necessary clamping of the panels of 50 mm each is ensured.

If plastic panes are clamped into these supports, this laying technique can lead to the formation of a free support, which, by allowing a small angular movement between the post and the plastic pane, has a negative impact on the fulfillment of the requirement of the Additional Technical Regulation Noise Protection Wall 1988 (ZTV LSW 88) for maximum deflection under traffic load of 1/75.

From US-PS 4,214,411 and LU-A 40666 further, very complex fastenings for panels of noise barriers are known. In the first document, the side ends of the plates have a 180 ^° bend, in which a thick rubber bead is located, which is in turn held by an angle under light pressure against the respective support. So that the plates cannot slip off the angle, a stable screen is provided on the side facing away from the curvature. In the second document, the plates each have a collar at their lateral ends, to which the plates are fixed to the respective supports by means of screw elements. Both plate systems are only suitable for thin (up to approx. 5 mm) or light plates, since a 180 ^° curvature can only be introduced into thick plates with a radius that is much too large for plate systems and because a thin retaining collar cannot be used for thick, heavy panes is stable enough to hold the panes securely in their holder in high winds or in the event of an accident.

FR-PS 1 128 314 describes a carrier system for corrugated sheets or corrugated fiber cement boards. The carrier system here is a double T-beam, on which a support surface, partially overlapping the corrugated sheets, are placed. A hook screw extends through both plates and is guided past the double-T beam to the rear and fastened there. The construction is very simple and particularly suitable for roof panels, as these are only exposed to low wind loads. With higher wind loads there is a risk that the corrugated sheets will be shifted with respect to the double-T beam.

From DE-OS 22 52 501, a plate system, in particular for metallic plates, is known, in which the plates are butted by interlocking tongues and grooves. The system, like the previous one, manages with relatively narrow beams, but is sensitive to thermal expansion and wind loads, i. H. especially due to possible wind loads, only to be installed on existing walls that can absorb the wind load.

A noise barrier is known from DE-U 79 13 787, the plates of which are prefabricated approximately in the middle and connected to a carrier. In order to ensure stability, in particular against rotation of the plate, the carrier arranged in the center must be very solid.

From DE-U 85 24 319.1 further carriers for noise protection panels are known, which correspond approximately to the carriers described above. Instead of a double-T beam, one can also use these systems Square tube can be used, which corresponds to the dimensions of the double-T beam. The individual plates are placed at a distance from each other on one of the side surfaces of the square tube and clamped against the square tube by means of a clamping rail and a corresponding number of screws through the gap between the individual plates. The construction is sufficiently wind-stable, but requires relatively wide square tubes for this.

The object of the present invention is therefore a plate system, the supports of which are particularly suitable for holding plastic panes and which, for optical and aesthetic reasons, should be relatively narrow in their construction. In addition, the construction of the plates and the supports should be simple and therefore not cost-intensive, and in particular are stable against wind loads.

This object is achieved in a plate system of the type described in the introduction in that the fastening means is anchored to the support through the support surface.

The plate system is based on plates, at least one support holding two adjacent plates on a support surface, these being connected to the support with at least one fastening means and in the area of the support having an area of partial overlap with one another in which at least in each of the two adjacent ones Plates a recess is provided, which are arranged substantially congruently in pairs, and wherein the fastening means through the pairs Recesses arranged congruently connects the two adjacent plates with each other and with the carrier.

The new plate system is particularly suitable as a wall system and is characterized in that the area of partial overlap is pressed directly and not offset against a support surface lying on or firmly connected to the support. This makes it possible to restrict the width of the support surface essentially to the area of partial overlap (including play) (and vice versa), the width of the support surface essentially corresponding to and determining the width of the support. Small deviations of the individual widths from each other, e.g. B. up to ± 50%, preferably up to ± 25% and in particular up to ± 15%, are possible, but essentially only due to design. Basically, the necessary width of the weakest link (necessary clamping area (≙ approximately the overlap) of the plates, stability of the support) of the plate system should be determined. Since the carrier is generally not the limiting factor, the width of the carrier can be significantly reduced compared to the conventional systems by the overlap which is located on a broad side of the carrier and is essentially limited to this area.

Since, in the new plate system, the plates are not spaced apart, as usual, or overlap essentially outside of the support surface, but are now partially overlapping with each other through the overlap and the support surface on the support, anchored to the support required beam width can be halved without affecting stability. This results in a visually more pleasing impression, especially for wall systems and especially with transparent (noise protection) walls, since the beams are slim and no longer - as before - appear clumsy. Such plate systems can therefore be used in particular where pedestrians or residents have visual contact with the plate system, since the environment is significantly less impaired with the plate systems according to the invention. According to its advantages, the new panel system is particularly suitable for plastic panels (preferably transparent panels) and especially for noise barriers.

The area of partial overlap (clamping depth) of the plates is normally between 20 and 100 mm. The overlap is preferably in a range from 40 to 60 mm, 50 mm being particularly favorable. If the overlap is too small, the plates do not have enough grip; if the overlap is too large, the carrier will again be too wide.

It is advantageous if the recesses through which the fastening means connect the plates to the carrier are designed as an opening, in particular a hole, which is enclosed on all sides by the plate, since the plates then not only have a non-positive connection against lateral pull but also a positive fit through the hole through this hole going fasteners are held, and are therefore particularly well secured against falling out.

This also fulfills the ZTV LSW 88's requirement for maximum deflection under traffic load of 1/75. The bore should therefore - like any other recess - be formed with play relative to the fastening means, so that the plates can be moved within the support bracket during thermal movement, wind load or other mechanical stress. The game should be present in particular in the longitudinal direction of the plate, for example this is fulfilled by an oval or slot-shaped opening. However, it is simpler to design the play in all directions; it is then only necessary to provide a larger bore than the shaft of the fastening means. The game should be with the commonly used records from e.g. Acrylic glass or polycarbonate, the dimensions of which are between 100 cm × 100 cm × 10 mm and 300 cm × 550 cm × 50 mm (L × H × d), are 3 mm to 30 mm. A play of 6 mm to 12 mm is particularly favorable.

As stated above, they are preferably transparent panels, since this has the least impact on the environment in terms of "installation". Plastic sheets, particularly those made of acrylic glass (preferably polymethyl methacrylate) or polycarbonate, are particularly cheap for this purpose, since these sheets are lighter than glass sheets and, in the event of slight damage, do not completely destroy themselves - like the toughened glass - and thereby break into many thousands of pieces. In addition, plastic panes are advantageous compared to the glass panes, since in plastic the recesses required for the invention, in particular the bores, are lighter can be introduced. In the case of glass panes, this must be done before it is hardened and is in any case more complex.

Because of the relative movement between the carrier and the plates, in particular transverse to the carrier, it is advantageous to provide a sliding element between the fastening means, the carrier and the plates themselves. One or more films made of an anti-adhesive plastic can advantageously be used as the sliding element. Polytetrafluoroethylene is advantageous as such a plastic. If a film is used as the sliding element, it can be formed in one piece in a special embodiment. When the plates are inserted into the carrier, such a film is then first placed on the carrier, then wrapped around the first plate, and then placed around the second plate arranged above the first. Viewed in cross section, this film then lies in a meandering shape around the ends of the two adjacent plates forming the area of partial overlap. Three individual foils can also be placed between the carrier / pane 1, pane 1 / pane 2 and pane 2 / cover.

So that the pressure exerted by the fastening means is distributed uniformly over the plates, an outer fastening plate is advantageously provided on the outside of the plates, that is to say opposite the carrier, which is connected to the carrier by means of the fastening means and the two between the carrier and the carrier neighboring plates are arranged.

This outer mounting plate also forms a protection against damage to the lateral end of the outer plate. For this purpose, it is particularly advantageous if a collar is attached to the outer fastening plate, so that the outer fastening plate forms an angle with the collar which lies in such a way that it encompasses the lateral end of the plate. The collar must not be greater than the thickness of the associated plate and possibly the lubricant, since otherwise the collar would rest on the other plate, which could result in scratches and damage to this plate. The collar preferably has a play of 0.2-5 mm, in particular between 0.5 and 1 mm, in relation to the plate facing away from the outer fastening plate.

Corresponding to the outer fastening plate, an inner fastening plate can also be provided on the carrier, which is then arranged between the carrier and the plate bearing against the carrier. This inner fastening plate forms a smooth contact surface for the adjacent plate and, like the outer fastening plate, can be equipped with a collar which then protects and encompasses the corresponding narrow side of the plate closest to the carrier.

The collars of the inner and outer fastening plate are conveniently arranged at a distance from the lateral ends of the plates, so that the play of the plates is retained in your fastening.

The inner and outer fastening plates expediently have a width approximately corresponding to the width of the carrier or a few mm larger. In such an embodiment, these fastening plates then cover the carrier, the fastening plates for the same purpose also being able to be arranged with their ends studded with collars offset somewhat beyond the width of the carrier.

The cross section of the carrier is preferably essentially square, the corners being usually rounded. The other elements can then be easily attached to such a carrier. It is advantageous here if the carrier is designed as a square tube. The wall thickness for the square tube has proven to be favorable when using steel 4 - 12 mm, common thicknesses are 6 - 10 mm, whereby 8 mm is particularly favorable in terms of weight, strength and availability. Overall, the quartratic carrier has favorable dimensions in the range from 60 mm × 60 mm to 120 mm × 120 mm, 80 mm × 80 mm has proven to be particularly favorable, in particular in connection with the above preferred thickness.

The carrier can advantageously already be connected to a base plate, this can e.g. done by welding. The base plate is provided with several holes through which this can in turn be connected to a foundation.

On straight sections, the plates are usually alternately one with their two ends on the right and left in contact with the support or inner fastening plate, the neighboring plates with their two ends on the right and left in contact with the outer mounting plate. This meandering installation can, however, also be deviated to a step-like arrangement in which each plate is then connected at one end to the support and at the other end to the outer fastening plate. The latter arrangement is particularly advantageous if the slabs are to be laid in a slight curve, the direction of the stairs is then changed, that is to say a meandering area is used.

The invention is described below with reference to exemplary embodiments.

• Fig. 1 einen Querschnitt durch einen Teil des Plattensystems in Höhe eines Befestigungsmittels;
• Fig. 2 eine Draufsicht auf ein in einer Kurve liegendes Plattensystem.

Show it

• Figure 1 shows a cross section through part of the plate system at the level of a fastener.
• Fig. 2 is a plan view of a plate system lying in a curve.

The section of a plate system 1 shown in FIG. 1 extends transversely through a carrier 2 and plates 3, 4 attached to it. The carrier 2 is vertical and is connected at its lower end to a base plate 5 which can be fastened to a foundation (not shown) via bores 26. Along the height of the carrier 2 is an inner mounting plate 6, which has at one end a collar 7 facing away from the carrier 2, so that the inner mounting plate 6 and the collar 7 together form an angle. The inner mounting plate 6 can be welded 8th be firmly connected to the carrier 2 and is then part of the carrier. The inner fastening plate 6 is followed by a tetrafluoroethylene film 9, which serves as a sliding element for the subsequent inner plate 3. The tetrafluoroethylene film 9 is folded over 10 and thus forms a sliding element 11 between the inner plate 3 and the outer plate 4. By means of another cover 12, the tetrafluoroethylene film 9 also lies on the side of the outer plate 4 facing away from the carrier 2 and thus forms another Sliding element 13 to an outer mounting plate 14. The outer fastening plate 14, like the inner fastening plate 6, is provided with a collar 15 which forms an angle together with the outer fastening plate 14, the collar 15 being arranged in the direction of the carrier 2.

Depending on the height H of the plates 3, 4, the individual elements are held together with one or more screws 16 as fastening means. A screw is cheap every 30 to 50 cm. In the outer mounting plate 14, the screw sits in an opening 17 which is only slightly larger than the screw shaft. With its thread 18, the screw is seated in the inner fastening plate 6 and the carrier 2, it being possible for the mating thread for the screw 16 to be cut into the carrier 2 and also into the inner fastening plate 6. The plates 3 and 4 have substantially larger bores 19 than the screw shaft, so that the plates 3 and 4 have a play transverse to the screw 16. According to this game, the collars 7 and 15 are arranged at a distance 20 from the respective plate ends. The screws 16 are only tightened so much that a displacement of the plates 3 and 4 against each other and with respect to the carrier is still possible.

In this embodiment, the carrier is a steel tube with the dimensions 80 mm × 80 mm × 6.3 mm, the mounting plates 6 and 14 with the associated collars 7 and 15 have the dimensions 20 mm × 80 mm × 6 mm. The tetrafluoroethylene film 9 has a thickness of 0.8 mm and lies on each side of the plates 3 and 4 for at least 60 mm. Plastic plates made of polymethyl methacrylate are used as plates 3 and 4, which have 16 bores of approximately 35 mm in diameter in the area of the screw. The screw shaft has a diameter of 10 mm.

Essentially the same elements can be used for the lateral ends of the plate system, with one of the collars 7 or 15 being omitted or being rotated in the opposite direction, the remaining collar 7 or 15 correspondingly remaining behind the lateral end of the last plate 3.

The overall height of the panel system depends on the local conditions and the available disc height, usual overall heights are 150 cm to 800 cm, preferably 200 cm to 300 cm. In the case of heights that exceed the maximum panel size, several panels must be used on top of each other through design measures. Conveniently, the upper end of the carrier is flush with the top edge of the plates.

Due to the described configuration of the clamping, a (quasi) fixed clamping can be achieved, in particular compared to the clamping on the double-T beam. The extremely small friction quotient between the Polytetrafluoroethylene film and the plastic pane enable a relative movement in the plate plane, which must be taken into account due to changes in length due to weather conditions (temperature, humidity). On the other hand, the fastening plates prevent the plate from changing its angle in the clamping area, so that the bending line of the plastic pane is influenced.

The bending of the plates can result from attacking traffic loads, especially wind and suction forces. The clamping, which is firmer than in the prior art, results in a reduction in the maximum deflection to up to 25% of the value of the clamping in accordance with the prior art.

The complete plate system 1 shown in FIG. 2 (not to scale) shows the arrangement of the individual plates 3 and 4 when the plate system 1 is arranged along a curve of a road 21. The plate system 1 is constructed here in such a way that a plate lies on the inside 3 of a carrier 2, while the outside 4 is arranged on the carrier 2 lying on the other side of the plate. At the transition of the system to a plate 3, which lies with its two lateral ends inside 3 (or with both ends outside 4) on the carrier 2, the system changes into a curve, which continues by reversing the inside / outside arrangement of the plates can continue.

Claims (10)

Panel system, in particular a noise barrier, made of panels, at least one carrier holding two adjacent panels on a support surface, these being connected to the carrier with at least one fastening means and having a region of partial overlap with one another in the region of the carrier, in each of the two adjacent panels at least one recess is provided, which are arranged essentially congruently in pairs, and wherein the fastening means connects the two adjacent plates to one another and to the carrier through the congruently arranged recesses,
characterized,
that the fastening means (16) is anchored through the bearing surface with the carrier (2). Disk system according to claim 1,
characterized,
that the recesses (19) are enclosed by the plate (3, 4) bores (19). Plate system according to claim 1 or 2,
characterized,
that the recesses (19) with respect to the fastening means (16) in the longitudinal direction (L) of the plate (3, 4) have a play of at least 3 mm. Disk system according to claim 3,
characterized,
that a sliding element (9, 11, 13) is provided between the plates (3, 4), the fastening means (16) and the support (2). Panel system according to one of the preceding claims,
characterized,
that the plates (3, 4) are plastic discs made of acrylic glass, in particular polymethyl methacrylate, or polycarbonate. Panel system according to one of the preceding claims,
characterized,
that the carrier holding the adjacent plates is provided with an outer fastening plate (14) opposite, which is connected via the fastening means (16) to the carrier (2) and between which and the carrier (2) the two adjacent plates (3, 4) are arranged are. Panel system according to one of the preceding claims,
characterized,
that an internal fastening plate (6) is provided on the carrier (2), which is arranged between the carrier (2) and the plate (3) closest to the carrier (2). Panel system according to one of the preceding claims,
characterized,
that the carrier (2) has a substantially square cross section. Panel system according to one of the preceding claims,
characterized,
that the carrier (2) is connected to a base plate (5). Panel system according to one of the preceding claims,
characterized,
that at least 3 plates (3, 4) are provided, which are arranged in a meandering or stepped manner.

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