DE202009007657U1 - Device for bearing mounting in solid structures, preferably on bridges - Google Patents

Abstract

Device for mounting bearings in solid structures, preferably on bridges, in particular on railway bridges, wherein on a superstructure and / or a concrete abutment a bearing with cast-head bolt is arranged, characterized in that the bearing has a variable shape block dowel (2) with the on one side fixed head bolt (1), wherein in the block dowel (2) a blind hole (3) is arranged with an internal thread, in which via a screw holder or a bearing plate (4) engages a screw (5).

Description

The The invention relates to a device for mounting bearings in solid structures, preferably from bridges.

To belong to the components of a bridge, next to the Main structure, also the so-called equipment elements. These are generally stressed particularly heavily, so that these have a shorter life than the main structure. Therefore should be used when planning a bridge on the use of low-wear, adaptable to new tasks but also be respected on short-term exchangeable constructions.

camp even if they are sized and built according to the rules be, a shorter life than the main structure. Therefore are Bridge bearings generally as interchangeable building products too to plan. This interchangeability is already in the planning of the construction project in a stock change concept to consider and represent and by the test engineer appointed by the Federal Railway Authority in terms of feasibility.

The Practice has shown in the past that this point is common was neglected. This shortcoming had then with high Follow-up costs and high expenditure on maintenance measures be compensated.

at known storage fixtures of solid structures are currently often Pasty compensation layers used because the flatness the connecting components of anchor plates and lining plates do not touch each other have been agreed or installation tolerances are present. For these leveling layers are generally materials used which have no construction supervisory approval and no valid comply with the technical regulations. Therefore, in these cases Generally a UiG and ZiE are needed, so it's timed Delay and additional costs in the training of the bearings come can.

At the Compensation of special storage conditions is the lining plate so far designed as a wedge plate. The wedge plate can be three-dimensional adapted to be executed, resulting in a considerable production cost causes.

Anchor-, Food and wedge plates are previously z. T. in considerable dimensions executed and thus cause - in addition to the production costs - also identifiable Materialkos th. In addition, this construction causes an undesirable large installation height in the warehouse.

It is also known a compensation structure for bridging a gap in the railway bridge construction, the abutment of the compensation structure mounted rotatably and the bearings are slidably or elastically movable ( DE 102 44 993 B4 ). The bearing is designed as a pivot bearing in the vertical direction adjustable in height. Under the pivot bearing extends a plate or layer-shaped elastic body made of elastomer.

• – die bekannten Lager weisen einen sehr starken Verschleiß auf
• – sie sind nur mit sehr viel Aufwand und hohen Kosten austauschbar
• – während des Austausches muss oftmals die Brücke für den Verkehr gesperrt werden
• – die Kraftaufnahme erfolgt oftmals unzulänglich
• – es treten unzulässige Verformungen der Lager auf
• – der Einsatz beweglicher Punktkippgleitlager ist nur für eine Kraftaufnahme in vertikaler Richtung möglich
• – ein Einsatz dieser Lager in horizontaler Richtung ist nicht möglich, da das Lager aufgrund eines Austrittes von Schmiermittel in kürzester Zeit unbrauchbar werden würde

Disadvantages of the prior art:

• - The known bearings have a very strong wear
• - they are only exchangeable with a great deal of effort and high costs
• - During the exchange, the bridge must often be closed to traffic
• - The power is often inadequate
• - Inadmissible deformations of the bearings occur
• - The use of movable Punktkippgleitlager is only possible for a power input in the vertical direction
• - A use of these bearings in the horizontal direction is not possible because the bearing would be unusable in a very short time due to leakage of lubricant

From the AT 003 270 U1 a bearing for structures, in particular for bridge bearings is known, said bearing having a Kalotten-bearing means for supporting the structure relative to an abutment, and at least one anchoring means for anchoring the bearing means on the building and / or on the abutment. In this case, the anchoring means is designed such that the vertical and a substantial portion of the horizontal forces are directly transferable between the storage facility and the structure and / or abutment. The anchoring means is formed as a strip-like, single or multi-part anchor plate.

Of the Invention is based on the object, a warehouse for solid structures to develop, which is flat and largely dispensed with the installation of plates.

This is inventively achieved in that the Bear a variable-shape block dowel having the head bolt fastened on one side, wherein in the block dowel a blind hole with an internal thread is arranged, in which a screw holder or a Bearing plate engages a screw.

The Inventive bearing can be in solid structures both in the area of the concrete superstructure, as well arranged in the area also made of concrete abutment be.

Of the Block dowel is preferably made of unalloyed structural steel and can be round or rectangular or square or polygonal or be oval or similar. He can go in the direction of screw holder or bearing plate have a confiscation. The confiscation can doing round or rectangular or square or polygonal or be oval or similar.

Between Screw and screw holder or bearing plate is a washer or a spring washer or the like arranged.

The Changing the bearing attachment has the consequence that the Mounting the bearing becomes more economical because of components such as z. B. lining plates and lower / upper anchor plates are dispensed with can. Furthermore, can be conventional in the future Incorporate bearings in solid structures easier, as the previously indicated Bearing fixture set in the formwork and through the screw (Template) can be fixed at the installation site. Here are various installation methods conceivable for bridge bearings:

1st variant:

The Bearing attachment is by means of template in the formwork of the massive superstructure / abutment set and fixed. The components (superstructure or abutment) are concreted. The components are turned off and then will the bearing in the designated bearing fixtures fixed.

2nd variant:

The Bearings are fixed to their place of installation by means of the bearing mounting fixed to the formwork. The components (abutment or superstructure) are concreted. The components are switched off.

One Advantage of this construction shown above is that it leads to a Minimization of installation tolerances between abutment / bearing and bearing / superstructure comes. Thus, a lining plate or an elaborately made Wedge plate in the future superfluous.

This bearing mounting is based on other types of bearings DIN EN 1337-1 (eg pot bearing etc ..) transferable.

Further advantages of the invention:

• • By eliminating the thick outer steel plates (anchor plates, lining plates, if necessary wedge plates) is a much more economical production possible. Due to the high steel prices are savings in production up to 40% feasible.
• • By eliminating the thick outer Plates, the installation height is lower.
• • The bearing mounting could be standardized.
• • On equipment of bearings such. B. Lining plates, wedge plates and outer anchor plates made of steel may be represented by the bearing mounting shown be waived in the future.
• • The installation of the bearings is based on the described Variants easier in the future.

embodiment

The Invention will be described below with reference to an embodiment be explained in more detail.

there demonstrate:

1 - The bearing mounting with block dowels in cross section

2 - The bearing mounting with a recoveries block dowels in cross section

3 - The bearing mounting in an elastomeric bearing in cross section

4 - The bearing mounting in a spherical bearing in cross section

The bearing for solid components has a block dowel 2 on, at the back of a head bolt dowel 1 is attached ( 1 ). This is preferably welded and is embedded in concrete either in the superstructure and / or in the abutment. On the dowel plug 1 opposite side of the block plug 2 is a blind hole 3 in the block dowels 2 introduced, which for receiving the screw 5 must have an internal thread. Between block dowels 2 and screw 5 is a screw holder 4 or a bearing plate arranged. The block dowel 2 can preferably be in the direction of screw holder 4 a confiscation 17 have, in one in the screw holder 4 appropriately arranged recess 18 engages ( 2 ).

The installation of two bearings 2 in an elastomeric bearing shows 3 , The elastomeric bearing has an upper and a lower bearing plate 7 ; 12 on, between those the elastomeric pad 8th seconded. At the lower bearing plate 12 is the sliding material 9 fastened, which by the retaining structure 10 is secured.

A similar structure shows 4 in which the installation of two bearings 1 is shown. Instead of the elastomer pad 8th here is a dome 16 fitted with sliding material.

1

Shear studs

2

block anchors

3

blind with internal thread

4

screw holder or bearing plate

5

screw (with washer)

6

superstructure (concrete)

7

upper bearing plate

8th

elastomeric pad

9

sliding

10

Retention structure

11

cover

12

lower bearing plate

13

abutment

14

screw holder

15

screw holder

16

dome (with sliding material)

17

collection

18

recess

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 10244993 B4 [0008]
• AT 003270 U1 [0010]

Cited non-patent literature

• - DIN EN 1337-1 [0020]

Claims (6)

Device for bearing mounting in solid structures, preferably on bridges, in particular on railway bridges, wherein on a superstructure and / or a concrete abutment a bearing is arranged with cast-head bolts, characterized in that the bearing has a variable shape block dowels ( 2 ) with the head bolt dowel fastened on one side ( 1 ), wherein in the block dowel ( 2 ) a blind hole ( 3 ) is arranged with an internal thread into which via a screw holder or a bearing plate ( 4 ) a screw ( 5 ) intervenes. Apparatus according to claim 1, characterized in that the block dowel ( 2 ) is made of preferably unalloyed structural steel. Apparatus according to claim 1 and 2, characterized in that the block dowel ( 2 ) is round or rectangular or square or polygonal or oval or similar. Apparatus according to claim 1 to 3, characterized in that the block dowel ( 2 ) in the direction of screw holder or bearing plate ( 4 ) a confiscation ( 17 ) having. Device according to claim 4, characterized in that the confiscation ( 17 ) is round or rectangular or square or polygonal or oval or similar. Device according to claims 1 to 5, characterized in that between screw ( 5 ) and screw holder or bearing plate ( 4 ) a washer or a spring washer or the like is arranged.