EP1070789A1 - Anchorage for a post - Google Patents

Abstract

The system for anchoring the posts (3) of a crash barrier along the roadway (2) of a bridge comprises a retaining plate (18) mounted on the base of each post which fits over a section of the bridge support structure. The retaining plate has a central slot (20), at right angles to the road direction, into which the post fits and lateral strips (21) which fit over the bridge structure.

Description

The invention relates to an anchor for a post as part of an installed next to a bridge carriageway Guardrail device for motor vehicles.

The German directive for passive protective devices on roads, posts with foot plates can be seen on bridge structures and predetermined breaking points. The question here upcoming types EDSP (simple distance guardrail) and DDSP (double distance guardrail) are designed that they correspond to containment level H1. The Retention level H1 no longer corresponds to the new one European requirements according to the CEN standard (DIN EN 1317). At very specific points, such as those provided on bridge structures Posts as part of the guardrail facilities, if necessary also containment levels H2, H3 or H4. Here, containment level H4 must be about five times the kinetic energy compared to the containment level Can convert H1 flawlessly.

The invention is based on the prior art Task based on anchoring for a post as Part of an installed next to a bridge roadway To create safety barriers for motor vehicles, which also meets containment level H4.

According to the invention, this object is achieved in the features of claim 1.

Everyone installed on a bridge structure and guard rails supporting post is now in its standby position with its lower end on an Bridge structure fixed bracket jammed. He follows now an impact on the crash barriers, especially through a truck, creating a kinetic energy up converted to an order of magnitude E kin 575000 N. must be, the frictional clamping allows of the lower end of the post on the bracket that the post crosses itself and energy converting until the on the bracket definable amount for a cross-shift exhausted is. As a result, a large part of the initiated kinetic energy has been converted. The bouncing Motor vehicle is caught comparatively soft and not thrown back onto the bridge lane. Also the motor vehicle cannot climb the guardrails and cross them.

The arrangement according to the invention can be both EDSP and DDSP types can be assigned.

The fixing of the bracket on the bridge structure is on by the thickness of the top layer and by the distance the fastening screws in the free movement of their Design limited. The invention now allows it however, the stress initiated in the event of an impact distribute harmoniously on several posts and thus a sudden application of force to a single one To avoid anchoring.

A particularly advantageous embodiment of the invention is seen in claim 2. After that, the bracket through a raised guide plate with a from Pass through the lower end of the post, across the road extending longitudinal slot formed. The post can in particular have a C-shaped cross section, so that he guided in the longitudinal slot with sliding play is. The post is fixed on a base plate, in particular welded to the base plate. The base plate is in one of the guide plate, two side, extending across the bridge carriageway strip-like elevations and the bridge structure channel limited on the circumference. The base plate can be a circular or a rectangular one Have configuration. It is only important that the Base plate is so frictionally integrated into the channel, that the impacting motor vehicle is sufficient yielding resistance can be brought which ensures that the motor vehicle along the guardrails directed and not uncontrolled to the Bridge road is thrown back.

The side elevations are with the guide plate appropriately welded so that guide plate and Elevations form a single assembly body.

To make the post's standby position even better secure, the features of claim 3 provide that in the standby position the base plate by means of the Insurgent penetrating fixing pins is held. These locating pins are used in particular through grub screws educated. The fixing pins can only be attached to the Side surfaces of the base plate must be pressed. Imaginable is also that the locating pins in recesses grasp the base plate. About this coupling of the Fixing pins with the base plate can then be the necessary Shear force with regard to the required retention level up to containment level H4.

Another feature of the invention is claim 4. After that are between the base plate and the elevations transversely adjustable strips are provided. About these Can perform in the event of an impact by a motor vehicle necessary resistance when moving the base plate can be set even more specifically in the channel. The adjustment or pressing the strips onto the base plate is preferably carried out with the help of the elevations penetrating cylinder head screws with hexagon socket.

Using the features of claim 5, according to which side surfaces of the strips facing the base plate Brake pads are provided, is the resistance behavior with successive conversion of the kinetic energy better adjust.

Since the lateral displacement of the Post inevitably due to lack of space is limited, see to improve compliance behavior the features of claim 6 before that the post is limited to one provided on the bracket resilient resistance across Bridge roadway is tiltable. This resistance occurs therefore in action when the relocation route of the Post is exhausted. The post can then with incline the guard rails and consequently give way more.

Only when the elastic resistance is exhausted the post is deformed, provided the stress stops.

The limited elastic resistance can vary Be trained way. According to claim 7, it consists of one on the underside between the side elevations layer provided on the guide plate.

This layer can correspond to the features of the claim 8 consist of an aluminum foam.

Is also conceivable according to claim 9 but rubber or rubber-like material.

Finally, according to the features of claim 10 provided that the bracket with the help of composite anchors is fixed to the bridge structure.

Figur 1

in der Perspektive im Schema einen Längenabschnitt einer auf einem Brückentragwerk installierten einfachen Schutzplankeneinrichtung;

Figur 2

in vergrößerter Darstellung einen Schnitt durch die Figur 1 entlang der Linie II-II;

Figur 3

einen Querschnitt durch die Darstellung der Figur 2 entlang der Linie III-III;

Figur 4

einen Schnitt durch die Darstellung der Figur 1 entlang der Linie II-II gemäß einer weiteren Ausführungsform;

Figur 5

einen Winkelschnitt durch die Darstellung der Figur 4 entlang der Linie V-V;

Figur 6

einen Schnitt durch die Darstellung der Figur 1 entlang der Linie II-II gemäß einer dritten Ausführungsform;

Figur 7

einen Schnitt durch die Darstellung der Figur 6 entlang der Linie VII-VII;

Figur 8

in vergrößerter Darstellung den Ausschnitt VIII der Figur 7 und

Figur 9

in vergrößerter Darstellung den Ausschnitt IX der Figur 7.

The invention is explained in more detail below on the basis of exemplary embodiments illustrated in the drawings. Show it:

Figure 1

in perspective in the diagram a length section of a simple guardrail device installed on a bridge structure;

Figure 2

an enlarged view of a section through Figure 1 along the line II-II;

Figure 3

a cross section through the representation of Figure 2 along the line III-III;

Figure 4

a section through the representation of Figure 1 along the line II-II according to another embodiment;

Figure 5

an angular section through the representation of Figure 4 along the line VV;

Figure 6

a section through the representation of Figure 1 along the line II-II according to a third embodiment;

Figure 7

a section through the representation of Figure 6 along the line VII-VII;

Figure 8

in an enlarged view the detail VIII of Figure 7 and

Figure 9

in an enlarged representation, section IX of FIG. 7.

In FIG. 1, 1 is a length section (weft) a guardrail device, which is next to a bridge carriageway 2 is located on a bridge structure BTW.

The guardrail device 1 comprises a C-shaped cross section Post 3 as load-bearing components for one essentially Guardrails with a W-shaped cross-section 4, 5. The crash barriers 4, 5 are with further crash barriers 4, 5 via contour-adapted not shown Couplings releasably connected together.

Two guardrails 4, 5 are arranged one above the other at a distance. The upper guardrail 5 is opposite the lower one Guardrail 4 offset from the bridge carriageway 2.

The distance to and definition of the lower guardrail 4 on the post 3 is done with the help of each other V-shaped spacer plates 6. The spacer plates 6 are each with a leg 7 on a post 3 and with the other leg 8 to the Bridge roadway 2 diverging inner leg 9 of the Guardrail 4 screwed. The webs 10 of the spacer plates 6 have edge flanges bent downwards or upwards 11 on.

Fixing the top guardrail 5 to the post 3 takes place with the help of the length of the guardrail 5 continuous spacer rails placed in a V-shape 12, which also has a trapezoidal cross section to have. Again, a leg 13 to the Post 3 and the other leg 14 to the diverging Inner leg 15 of the guardrail 5 screwed.

The lower ends 16 of the posts 3 (see Figures 1 to 3) are each connected to the BTW bridge structure Composite anchor 17 fixed bracket 18 across Bridge carriageway 2 positively shifted frictionally.

The bracket 18 is rectangular by an elevated Guide plate 19 with one from the lower end 16 of the post 3 penetrate across to the bridge carriageway 2 extending longitudinal slot 20 formed. The uprising 21 consist of spaced-apart side strips. They are, as can be seen in FIG. 3 leaves, with the guide plate 19 on the outside via a V-seam welded. Guide plate 19 and elevations 21 are penetrated by three holes 22 each. By these bores 22 become bolts 23 in the sleeve-like Composite anchor 17 rotated into the bridge structure BTW are let in. With the help of nuts become 24 the brackets 18 then on the bridge structure BTW fixed.

The lower end 16 of each post 3 is with a base plate 25 firmly connected, in particular welded. in the In the embodiment of Figures 1 and 3 is the Base plate 25 is rectangular. In Figure 2 is shown them round. The base plate 25 is in a channel 26 longitudinally displaceable (Figures 1 and 2) by the Guide plate 19, the lateral strip-like elevations 21 and the bridge structure BTW limited on the circumference is (Figures 1 and 2).

By dimensioning the thickness of the base plate 25 in a corresponding manner Relation to the height of the channel 26 must be one certain force is applied to a post 3 to be able to move across the bridge lane 2. Because of this frictional integration of the base plate 25 in the channel 26 in the event of an impact Motor vehicle on the crash barrier device 1 kinetic Energy converted, the respective post 3 is shifted in the longitudinal slot 20.

It can still be seen in particular from FIG. 3 that on the underside the guide plate 19 between the two elevations 21 a one with a limited elasticity Resistant layer 27 made of aluminum foam or rubber can be applied. This layer 27 takes then its function true if the post 3 in the longitudinal slot 20 up to the end stop 28 (FIG. 2) has been relocated. If the load continues of the post 3 over the crash barriers 4, 5 then Post 3 tilted across the bridge lane 2, the Layer 27 is deformed by the base plate 25. First if more energy has been converted here, too the post 3 itself bent if there is still a load.

In the context of the embodiment of Figures 4 and 5 is the Base plate 25 formed square with rounded corners 29. The standby position illustrated is by a total of four fixing pins formed from grub screws 30 guaranteed. These penetrate threaded holes 31 in the elevations 21 and are in recesses used on the sides of the base plate 25. The Fixing pins 30 shear off when one on the post 3 exerted certain load and the base plate 25 in Channel 26 is shifted.

Otherwise the configuration corresponds to FIGS. 4 and 5 of those of Figures 1 to 3, so that a repeat Explanation does not appear necessary.

The embodiment shown in Figures 6 to 9 differs from the previous ones only in that that in addition to the fixing pins 30 between the Base plate 25 and the elevations 21 still adjustable Last 32 with on the base plate 25 facing Side surfaces 33 arranged brake pads 34 are provided are. These strips 32 are with the help of Cylinder head screws 35 against the desired extent the base plate 25 pressed and additionally secure here the standby position.

Figure 8 shows in more detail that, as with the Embodiments of Figures 1 to 5, the lower ends 16 of the posts 3 in corresponding recesses 36 of the Base plate 25 inserted and welded here.

List of reference symbols

1 -

Guardrail device

2 -

Bridge roadway

3 -

post

4 -

lower guardrail

5 -

upper guardrail

6 -

Spacer plates

7 -

Thigh v. 6

8th -

Thigh v. 6

9 -

Inner thigh v. 4th

10 -

Stege v. 6

11 -

Edge flanges on 10

12 -

Spacer rails

13 -

Thigh v. 12th

14 -

Thigh v. 12th

15 -

Inner thigh v. 12th

16 -

lower ends of 3rd

17 -

Composite anchor

18 -

bracket

19 -

Guide plate v. 18th

20 -

Longitudinal slot in 19th

21 -

Rebellions v. 18th

22 -

Holes in 19 u. 21

23 -

Bolts

24 -

Nuts

25 -

Base plate

26 -

Channel f. 25th

27 -

Shift on 19th

28 -

Stop f. 3 in 20

29 -

Corners of 25th

30 -

Locating pins

31 -

Tapped holes in 21

32 -

Last between 25 and 21

33 -

Side surfaces v. 32

34 -

Brake pads on 33

35 -

Cylinder head bolts

36 -

Recesses in 25th

BTW-

Bridge structure

Claims (10)

Anchoring for a post (3) as a component one installed next to a bridge carriageway (2) Guardrail device (1) for motor vehicles, at which of the guard rails (4, 5) support posts (3) with its lower end (16) on one on the bridge structure (BTW) fixed bracket (18) around a determinable Amount across the bridge carriageway (2) positively guided is frictionally displaceable. Anchoring according to claim 1, wherein the bracket (18) by a raised guide plate (19) with one from the lower end (16) of the post (3) enforced, running across the bridge carriageway (2) Longitudinal slot (20) formed and the post (3) is fixed on a base plate (25) in a from the guide plate (19), two lateral strip-like Elevations (21) and the bridge structure (BTW) circumferentially limited channel (26) relocatable is. Anchoring according to claim 2, wherein the base plate (25) by means of the elevations (21) Fixing pins (30) in the ready position is held. Anchoring according to claim 2 or 3, in which between the base plate (25) and the elevations (21) transversely adjustable strips (32) are provided. Anchoring according to claim 4, wherein the Base plate (25) facing side surfaces (33) of the Last (32) with brake pads (34) are provided. Anchoring according to one of claims 1 to 5, which of the posts (3) against one on the bracket (18) provided with limited elasticity Resistor (27) can be tilted transversely to the bridge carriageway (2) is. Anchoring according to one of claims 2 to 6, which underside the guide plate (19) between the elevations (21) limited to one provide elastic resistance layer (27) is. Anchoring according to claim 7, wherein the layer (27) is formed by aluminum foam. Anchoring according to claim 7, wherein the layer (27) is made of rubber. Anchoring according to one of claims 1 to 9, which the bracket (18) by means of composite anchors (17) is fixed to the bridge structure (BTW).

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