DE1658589A1 - Device for bridging expansion joints in bridges or the like with a support structure designed as a closed profile or box-shaped support - Google Patents

Description

EEMAG-'Aktiengesellschaft' · I ¹ J-. November 1967 41 Duisburg 5313 - Thu / Ski

Wolfgang-Reuter-Platz

Device for bridging expansion joints in bridges or the like with a closed profile or box-shaped support formed support structure

The invention relates to a device for bridging expansion joints in bridges or the like, in which pendulum ₃ transition and tongue plates extending in the longitudinal axis direction of the bridge and connecting one another are provided, which are each arranged side by side and together transversely to the longitudinal axis of the bridge Form a roll-top roadway transition, which is supported on a substructure with an arched sliding surface for the transition plates.

It is known to be on the support bank of the abutment or superstructure supported substructure made of individual, at certain but selectable distances across the bridge's longitudinal axis arranged support brackets with the help of straps and webs with any necessary stiffeners Assemble lanyards to form a unit.

The support beams or struts with the edge strip for the tongue plates are also connected to this unit by screwing.

Such a support structure made of individually manufactured components may be as a finished whole at the construction site realign and, if necessary, rework * so that they can be achieved in compliance with the manufacturing process Degree of accuracy when installing on the support bench

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5515 - Thu / Ski £ 14. 11. 67 - <&

with the limited installation options available here, depending on the support base, those for the exact support of the above Located plates required support base forms that the Provides the basis for a functional device for expansion joints.

It has been found that especially with concrete and Steel bridges with the main support member as the only girder that is continuous over the entire length of the bridge or, in the case of bridges, with the side the main support members protruding slender cantilever arms for the outer part of the carriageway and for the sidewalks support structure composed of individual parts is difficult to accommodate in the free space above the support bench, because with these mentioned bridges there is usually a sufficient free height for the support of the device missing or not present at all because the assembled Unit from single blocks is relatively high because of the required rigidity, so that the available Standing installation height - measured from the upper edge of the cantilever arm (support bench) to the lower edge of the curb (roadway level) in is not sufficient in most cases.

The aim of the invention is to provide the support structure for the transition plates to be trained and reorganized in such a way that they can be used as a single unit comparable strength and rigidity with the supporting structure assembled from single trestles in the Building height is considerably lower, so that the free height of the superstructure is always sufficient or still through documents in can be adapted to the height and that the degrees of accuracy achieved in the machine production also during installation remain in the expansion joint, so that an exact support base without message and other rework for the overlying transition plates is available.

BATH ORIGINAL

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This aim is achieved according to the invention in that the Supporting structure made of one that extends across the width of the bridge closed profile, preferably as a box-shaped Carrier, is formed. -'- "" ■ "" '

This box girder consists of closed cells that from the flat lower chord plate, the arched upper chord plate, the front and rear rear wall and the transverse bulkheads be formed; these cells produced in this way in a welded construction are closed by box-shaped cells Connecting shots to a continuous closed ^

Profile unit joined together. ™

The assembly can be done by welding or, in the case of relatively wide bridges, the box girder is divided into two or three, if necessary several box girder parts and connected by connecting means to form the continuous girder unit. ■ ".; \ ^: '""." \ ^

The finished support structure according to the invention in the form of the continuous box girder is self-supporting and to be used as a laterally projecting girder over the main bridge member or members as a replacement for the missing top chord of the bridge girder. ' - -m

The box girder has particularly attached top chords Wear plates made of highly wear-resistant material; on The sliding supports of the transition plates lie on these wear plates and are on this moveable. · Ν '- ..;

In a preferred embodiment, the support girder for the tongue plates is connected "to" the supporting structure as a box girder in an equally designed closed profile construction and forms a solid structural unit with the box girder . . ^..: ,,;. ■■■ - ■: ■ ^■: ■ ■■ "...

OOÖ839 / OS03

5313 - Thu / Ski u 14. 11. 67 · -

With regard to the support of the box-shaped supporting structure on the support bank of the abutment or superstructure there is now a full support over the entire length of the box.

• In the drawing, a preferred embodiment is the Device according to the invention shown. Show it

Fig. 1 is a three-dimensional representation of the device in Longitudinal section,

Fig. 2 shows a cross section through a bridge with built-in Contraption.

The device for bridging expansion joints in bridges or the like essentially consists of a box-shaped support bracket I ₃ which is supported on the bearing bank 10 of the abutment 11 and this carries the transition plates 13 * to which the pendulum plates 12 are located on one side and on the other in the longitudinal axis of the bridge Connect the tongue plates 17 on the side.

The trestle support is made up of closed cells 2 and these connecting closed sections 3, preferably of welded construction manufactured.

The support cell 2 is formed from the flat lower chord plate 4, the arched upper chord plate 5 * of the front and rear rear walls _6S 7 and the transverse bulkheads 8, 9, which run in the longitudinal axis direction of the bridge and are arranged at a distance transverse to the longitudinal axis of the bridge.

On the abutment side, the carrier l8 with the edge strip I9 for the tongue plates 17 is connected to the trestle carrier 1 and, together with the carrier 1, forms a continuous structural unit.

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The carrier for the pendulum plates 12 is with 20, whose The edge strip is denoted by 21.

The slide supports 14 and 15 on the transition plates 12 and 13 lie on particularly highly wear-resistant wear plates 16, which are firmly connected to the carrier 1.

As a closed profile or as a box girder trained support structure for the transition plates, you get a substructure that is inherently rigid Structure represents that in comparison to a composite unit of individual support frames with comparable Strength and stiffness are considerably lower Has overall height. .

Due to this achieved lower building hootiness of the supporting structure it is easily possible to use the entire bridging device to be placed in the available free space above the support bench in relation to the overall height, without any difficulties arising with regard to the exceedance the permissible road level. This is particularly advantageous for bridges with slim cantilever arms 22 (FIG. 2) for the outer part of the roadway 23 and for the sidewalk 24 or in the case of bridges with a main structural member that is continuous over the entire length of the bridge as the only girder that is in the generally as trapezoidal, tapering towards the bottom Hollow box 25 is formed.

In these cases, the upper flange of the bridge ends in front of the expansion joint and only the webs and the lower chord of this main girder are pulled through. The box girder 1 for the plate construction 13 is supported on the aforementioned webs.

The continuous box girder according to the invention is also own that with her the degrees of accuracy achieved in the manufacture are retained during and after installation in the expansion joint, so that an exact support base

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for the transition plates is available, which is the guarantee for exact contact ratios of the tongue tip ends 17 * the transition plates 13 is.

09839/0683. ■ »« «» ■ *.

Claims (1)

DEMAG Aktiengesellschaft, kl Duisburg 11/14/1907 U - 5513 - ^x Dn./Schi. Claims 1. Device for bridging expansion joints in bridges or the like * with transition plates that on one supported on the support bank of the superstructure Support block construction and can be moved on this when the expansion joint changes, characterized, that the trestle construction from one across the bridge .width reaching closed profile, in particular box girder (1), is formed " 2. Device according to claim 1,
characterized, that the box girder is formed from cells (2; 4 to 9) closed on all sides with closed connecting sections (3). J), device according to claim 1 and 2, characterized in that that on the box girders (1) the support girder (18,19) for the tongue plates (17) is connected and together with the carrier forms a structural unit, 4. Device according to claims 1 to 3, characterized, that the arched upper belt (5) of the carrier (1) in the area of the slide supports (1A, I5) of the transition plates (15) each has a wear plate (l6). 009839/0593