DE1992552U - BOX SUPPORT BRACKET FOR BRIDGE CROSSING. - Google Patents

Description

: ■ June 11, 1968 _: Ύ

DEMAG Aktiengesellschaft - 9/68 Gm - /

41 Duisburg Thu / Ko ^ - Wolfgang Reuter Square

Device for bridging expansion joints in bridges or the like with a support structure designed as a closed profile or box-shaped carrier ^ Transition)

The innovation relates to a device for bridging of expansion joints in bridges or the like, in which in the bridge longitudinal axis direction extending and adjoining pendulum, transition and tongue plates are provided, each of which is transverse to the longitudinal axis of the bridge Arranged next to each other and together form a roll lock-roadway crossing, which is on a substructure with curved sliding surface for the transition plates.

It is known that the substructure supported on the support bank of the abutment or superstructure consists of individual, at certain but selectable distances across the bridge * - 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 bzxv. - Struts with edge strips for the tongue plates are also connected to this unit by screwing.

Such a support structure made of individually manufactured components may have to be realigned as a finished whole at the construction site and, if necessary, reworked so that it is achieved in compliance with the production Degree of accuracy when installing on the support bench

June 11, 1968

: - 9/6 $ gm

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with those that are limited here, depending on the bearing bite Installation options that form the support base required for the exact support of the plates above, which 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 sole girder or, in the case of bridges, with the side of the bridge the main support members protruding slender cantilever arms for the outer part of the carriageway and for the sidewalks supporting structure composed of individual parts is difficult to accommodate in the free space above the support bench, because b & i usually has one of these bridges, sufficient free height for the support of the device is missing or not available at all; because the assembled unit from single trestles builds because of the required Stiffness relatively high, so that the available installation height - measured from the upper edge of the cantilever arm (Support bench) up to the lower edge of the curb (lane level) - is not sufficient in most cases.

The aim of the innovation is to create the supporting structure for the 'transition plates in such a way that they can be used as a structural unit of comparable strength and rigidity with the Supporting structures 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 the height can be adjusted and that the machine The degree of accuracy achieved in the manufacturing process is also retained during installation in the expansion joint, so that an exact Support base without message and other rework for the overlying transition plates is available.

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11.6.68 -9/68 Gm-Thu / Ko

This goal is achieved according to the innovation that the Supporting structure made of a closed profile that extends across the width of the bridge, preferably as a box-shaped one 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 sections combined to form a continuous, closed profile unit.

The assembly can be done by welding The box girder is in two relatively wide bridges or divided into three, optionally several box girder parts and connected by connecting means to the continuous support unit.

The finished supporting structure after the innovation in shape of the continuous box girder is self-supporting and protrudes laterally than over the main bridge leather (s) To use girders as a replacement for the missing top chord of the bridge girder.

The box girder has specially 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 when the expansion joint changes moveable.

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

June 11, 1968 - 9/68 Gm Thu / Ko

Regarding the support of the box-shaped supporting structure on the support bank of the abutment or superstructure is now a full support over the entire length of the box available.

In the drawing, a preferred embodiment is the Device shown after the innovation. It shows

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 consists essentially of a box-shaped support bracket 1, which is on the Atiflagerbank 10 of the Abutment 11 is supported and this carries the transition plates 13, to which in the bridge's longitudinal axis to one Connect the pendulum plates 12 on the side and the tongue plates 17 on the other side.

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

The carrier cell 2 is formed from the flat lower chord plate 4, the arched upper chord plate 5, the front and rear rear walls 6, 7 and in the direction of the longitudinal axis of the bridge running transverse bulkheads 8, 9 arranged at a distance transversely to the bridge's longitudinal axis.

On the abutment side, the carrier l8 is attached to the trestle carrier 1 with the edge strip 19 for the tongue plates17 connected and together with the carrier 1 forms a continuous supporting structure.

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The carrier for the pendulum plates 12 is with 20, its 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 sealing plates 16, which are firmly connected to the carrier 1.

As a closed profile or as a box girder 1 trained support structure for the transition plates, a substructure is obtained that is inherently rigid This is a structure that is considerably lower than a composite unit made up of individual trestles with comparable strength and rigidity Has overall height. . ; -

Due to this achieved lower overall height of the supporting structure: ■ construction, it is easily possible to use the entire bridging device in relation to the overall height in the free space available above the support bench, without difficulties arising in terms of exceeding the permissible road level. This is particularly advantageous in the case of bridges with slender cantilever arms 22 (Figure 2) for the outer part 23 of the carriageway and for the walkway 2h or in the case of bridges with a main support member extending over the entire length of the bridge as the only girder, which is generally a trapezoidal box girder that tapers downwards 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 is on the mentioned bridges 1 supported for the plate structure 13. ,

The continuous box girder according to the innovation is also to own that- with him the degree 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 display conditions of the tongue plate ends 17 'on the transition plates 13 is.

Claims (1)

■■■ - ■■ June 51, 1968 - "97.68 Om DEMAG Aktiengesellschaft Dq / Ko Al Duisburg UA. 0D-Π h 7 * 1 L | G Wolfgang Reuter-Platz i.n. J i ι υ J / π. .υ. S> protection claims 1. Device for bridging expansion joints in bridges or the like. With transition plates on rest on a supporting frame construction supported on the support bank of the superstructure and on this at Expansion joint changes are movable, characterized in that that the trestle construction from a closed profile reaching across the width of the bridge, in particular Box girder (1) is formed. 2. Device according to claim 1,
characterized by ^ that the box girder is formed from cells (2; H to 9) closed on all sides with closed connecting sections (3). 3. Device according to claim 1 and 2, characterized in that that on the box girders (1) the support girder (1849) • is connected for the tongue plates (17) and forms a structural unit together with the carrier. * J. Device according to Claims 1 to 3 _3, characterized in that that the arcuate upper belt (5) of the carrier (1) in the area of the slide supports (l4, 15) of the transition plates (13) each has a wear plate (16). 5. Apparatus according to claim 1,
characterized, that the box girder (1) is divided into several carrier parts which are connected to one another by connecting means are connected.