WO2009076692A1

WO2009076692A1 - Plate element for a structure support

Info

Publication number: WO2009076692A1
Application number: PCT/AT2008/000457
Authority: WO
Inventors: Georg Michael Wolff
Original assignee: Reisner & Wolff Engineering Gmbh
Priority date: 2007-12-18
Filing date: 2008-12-17
Publication date: 2009-06-25
Also published as: ATE524614T1; AT506242B1; AT506242A1; EP2235265A1; EP2235265B1

Abstract

The invention relates to a plate element in the form of an anchor plate (1) or sliding plate (2) for a structure support having a plate body (3). The plate body (3) is a metal/concrete composite element (4) comprising a concrete element (6) and a metal element (5), wherein the concrete element (6) is at least partially surrounded by the metal element (5).

Description

Plate element for a building warehouse

The invention relates to a plate element in the form of an anchor plate or sliding plate for a building warehouse with a plate body and a method for its preparation.

Sliding bearings for engineering structures, such as bridges, steel structures, pipelines, etc., as they are regulated for example in ÖNORM EN 1337 and ÖNORM B 4021, have among other sliding plates or anchor plates. The sliding plates are used to decouple between the supporting structure, so for example. A bridge pier or an abutment for a roadway, and to be stored structural part, such as the road itself, so as to allow this last-mentioned building part horizontal displacement. It can thus be avoided that due to changes in length, for example. Due to temperature fluctuations, occurring forces are introduced into the supporting structure itself. Anchor plates in turn are used for the positive connection of a building warehouse to Bau- ^' work. In the case of large bearings, for example with an extension of 2 × 1.5 m, the thickness of these plates can clearly exceed 100 mm. According to the standard, it is required that the thickness has at least 4% of the surface diagonal. In particular, it must be prevented that an elastic deflection occurs when installing the plates due to fresh concrete load. The resulting extremely thick plates on the one hand have the disadvantage that this high material costs are associated, and that on the other hand increases due to the higher the cost with increasing thickness due to the mechanical processing of the plates.

The object of the invention is therefore to provide an anchor plate or sliding plate for a Bauwerklager, which is cheaper to produce.

This object of the invention is independently achieved in that the plate body of the anchor plate or sliding plate is a metal / concrete composite element of a concrete element and a metal element, wherein the concrete element is at least partially surrounded by the metal element, and by the method for producing an anchor plate or sliding plate after a Metallralimen is placed on a precision plate having a requirements of the evenness of the anchor plate or sliding plate exceeding evenness, and the metal frame is poured with concrete, possibly after arrangement of reinforcing elements on the metal frame. By replacing a large proportion of metal, compared with the metallic Ankerbzw. Sliding plates from the prior art, by concrete, a significant cost reduction in the production of these plates is achieved. In addition, so that a high flatness of the surface of these plates is easier to produce because no longer large metal plates must be processed but smaller metal elements, eg. Metal frame parts, and the larger surface portion of the plate elements, which is formed by the concrete, by removing the still wet or moist concrete the required evenness of these plates. In addition, it is possible, if necessary, to be arranged transport aids, such as hooks, eyelets, or the like., With einzubetonieren, these transport aids can act as reinforcing elements for power transmission in the adjacent components of the building in the sequence in which this in the concrete adjacent components are involved and thus a positive connection is made. With the metal elements, the concrete element of these plates can be given the required stability. At the same time, these metal elements can also be used for attaching additional desired attachments, such as guide elements for forming guide planes, in order to allow sliding movement in one direction, tabs for screw fastening of the plates to the structure, display scales, measurement planes, nameplates, etc.

The metal element may be formed by a metal frame or a metal pot. By the metal frame completely surrounds the concrete element at its periphery, the metal frame can be used simultaneously as a formwork for the concrete element. It is thus a better adhesion or connection of the concrete element on the metal element achievable. For this purpose, the metal element or the metal frame in particular has a height which corresponds to the height of the concrete element, so that therefore the concrete element at least on its upper side flush with the metal element, i. the metal frame, completes.

By using a metal pot, the metal content of the anchor plate or sliding plate is again increased, but the bottom of the metal pot can be used as formwork and, moreover, the transport of these plates is easier to carry out since damage to the underside of the plate can be better avoided , On the other hand, it is also possible that this plate is used as a sliding plate by the metal pot is toppled and thus a metallic surface of the plate is available. Preferably, the metal frame is formed from interconnected angle profiles, although an integral production of a metal profile is possible. It should be noted in this context that the plates with a wide variety of cross-section - viewed in plan view - can be produced, so for example. Round plates. With individual angle profiles, the advantage is achieved that any cross-sectional shapes are easier to produce. The angle profiles can in particular be designed as an L or U or C profile, viewed in a side view of the plate.

For better force dissipation or force transmission into the metal element, it is advantageous if reinforcing elements for the concrete element are arranged on one or more inner surfaces facing the concrete element, the latter being filled with the concrete by filling the metal frame Concrete element be embedded in concrete. It is thus improved, the connection of the concrete element to the metal element.

For the transmission of force in the part of the building structure abutting the plate, for example an abutment, it is possible that the metal element also has reinforcing elements on one or more outer surfaces (s) facing away from the concrete element, which are embedded in the structural part. It may thus be limited to additional connecting means, such as e.g. Schraublaschen or the like., Will be omitted.

It is particularly advantageous if the reinforcing elements extend through the metal element, as this allows the power transmission from the concrete element directly into the subsequent structural part, and also the production of these plates can be simplified since these reinforcing elements are not welded to the metal element Like. Must be connected, but in principle only holes or recesses in the metal elements must be provided through which the reinforcing elements are inserted through. An additional attachment to the metal element is of course possible.

As already mentioned, it is advantageous if reinforcing elements and / or transport aids are arranged in the concrete element, which protrude beyond the surface of the concrete element and can be embedded in the adjacent building part, whereby the connection This anchor plate to the building so that the power transmission can be done better.

Furthermore, it is advantageous if the compressive strength of the concrete element is at least as great as the compressive strength of a subsequent component of the structure, since thus a relief of the metal element so. For example, the metal frame can be done.

To form the sliding plate, it is possible for a, in particular metallic, sliding element to be arranged on a surface of the concrete element, which has a surface extent - viewed in plan view - which is so large that the top surface of the concrete element is covered by it which is connected to the metal element. It is thus the sliding movement focused solely on this metallic slider. Thus, the stress on the concrete element is reduced on the one hand, on the other hand, so that the friction between the successive sliding layers can be reduced.

In an embodiment variant of the method, it is possible to preheat this metallic sliding element and to arrange it in the heated state on the concrete element and to connect to the metal frame, whereby it is achieved that this metallic sliding element at the operating temperatures of the bearing constantly under an all-around voltage, i. a membrane tension is, whereby so-called crease effects can be avoided on the sliding element.

For a better understanding of the invention, this will be explained in more detail with reference to the following figures.

Each shows in a highly schematically simplified representation:

Fig. 1 shows a first embodiment variant of a plate element cut in an oblique view;

Fig. 2 shows a variant of a plate element with cup-shaped metal element cut in an oblique view;

3 shows a plate element with a circular cross section in an oblique view. Fig. 4 is a slide plate cut in an oblique view;

Fig. 5 is a slide plate with internal reinforcing elements cut in an oblique view;

Fig. 6 shows a variant of a sliding plate with additional external reinforcing elements cut in an oblique view;

Fig. 7 shows a plate element in an oblique view with additional attachments.

By way of introduction, it should be noted that in the variously described embodiments, the same parts are provided with the same reference numerals or the same component names, wherein the disclosures contained in the entire description can be mutatis mutandis to identical parts with the same reference numerals or component names. Also, the location information chosen in the description, such as top, bottom, side, etc. related to the immediately described and illustrated figure and are to be transferred to the new situation mutatis mutandis when a change in position. Furthermore, individual features or combinations of features from the various exemplary embodiments shown and described may also represent separate solutions in their own right, according to the invention or in accordance with the invention.

1 shows a plate element in the form of an anchor plate 1 or sliding plate 2 for a building, in particular an engineering structure, such as a bridge, a steel structure or a pipeline. This anchor plate 1 or sliding plate 2 has a plate body 3, which is formed as a metal / concrete composite element 4 with a metal element 5 and a concrete element 6. In this case, the metal element 5 surrounds the concrete element 6 at least partially on a circumference 7 of the concrete element 6. Preferred is an embodiment in which the metal element 5 surrounds the concrete element 6 on side surfaces 8 of the concrete element 6 over the entire circumference 7. The concrete element 6 and the metal element 5 are flush with respect to a top surface 9 and a bottom surface 10, i. formed planar, so there is no gradation between the concrete element 6 and the metal element 5 is present.

The metal element 5 consists in this embodiment of a metal frame of individual metal profiles 11 is formed, wherein the metal profiles 11 have a C-shaped cross section and connected to each other at the corners, in particular welded, are. Of course, there are other connection options, such as the screw connection, etc.

By formed as metal profiles metal elements 5 of the anchor plate 1 and sliding plate 2 is given the required stability.

In particular, steel profiles are suitable as metal elements 6, it also being possible to use other metals or metal alloys depending on the stability requirements.

The concrete element 6 is preferably made of a creeping and shrinkage-free concrete, for example a high-performance concrete, a fiber-reinforced concrete or a polymer concrete. Since these types of concrete are known in principle from the prior art, there is no need for further discussion at this point.

The compressive strength of the concrete element 6 is at least as high as the compressive strength of the subsequent to the anchor plate 1 and sliding plate 2 components of the building.

To produce this anchor plate 1 or sliding plate 2, the metal element 5 is produced in a first step, for example. The steel frame. This metal element 5 is then placed on a solid precision plate, which preferably has a requirements exceeding evenness and at the same time serves as shuttering element for the concrete element 6 to be produced. As a result, the metal element 5 is poured out with the concrete and preferably drawn off with the metal element 5 in a planar manner. If necessary, the cast-in concrete is shaken for compaction. For this purpose, for example, the precision plate can be arranged on a vibrating device or this precision plate can form part of this vibrating device.

Fig. 2 shows a variant of the metal element 5 cut in an oblique view. In this case, this metal element 5 is formed as a metal pot 12, that this metal element 5 already includes a bottom, so no additional precision plate must be used as a support surface. This metal element 5 can be produced, for example, so that a surface chenelement can be bent several times, so that two opposing side walls of the metal element 5 are formed from this surface element. The (two) other side walls can be connected in the sequence with this metal element part, in particular welded, become.

Dashed line is further indicated that additionally in the region of the top surface 9 of the concrete element 5 (Fig. 1), this metal element 5 has a bend 13, similar to the angle profiles or metal profiles 11 according to Fig. 1. It is thus a better cohesion by the penetration of the concrete of the concrete element 6 into the "gap" created thereby of the metal element 5. These bends 13 may be cut to fermentation in the corner regions.

It should be clarified with FIG. 3 that the anchor plate 1 or sliding plate 2 does not necessarily have to have a square or quadrangular cross-section, but other cross-sectional shapes-seen in plan view-are also possible, for example round or also polygonal, ie e.g. pentagonal, hexagonal, octagonal etc.

The metal element 5 in this embodiment of the invention is annular and is made of a metal strip, in particular steel strip.

In all embodiments of the invention, there is the possibility that the metal element 5 does not surround the concrete element 6 over the entire circumference 7. For example. Metal elements 5 may be composed of a plurality of metal profiles 11 which connect the metal profiles 11 via angle connectors or metal rods, for example threaded rods, which run in the corner regions of the plate element in the diagonal direction. These additional connectors in the corner areas can also serve as reinforcement. Preferably, however, a full-surface enclosure of the concrete element 6 in the region of the circumference 7, since no additional formwork in this area are required.

Fig. 4 shows a sliding plate 2, in turn comprising the metal / concrete composite element 4. In this embodiment of the invention is on the top surface 9 of the metal / concrete composite element 4, a sliding member 14 in the form of a thin, non-rigid metal plate for the production of the slip plane arranged. This sliding element 14 has a thickness which is selected from a range with a lower limit of 0.5 mm and an upper limit of 5 mm. Furthermore, the sliding element 14 has a surface area which is so large that its edge areas rest on the metal element 5, ie, that the concrete element 6 is completely covered by this sliding element 14 in plan view.

Connected, the sliding element 14 can be connected to the metal element 5, e.g. by means of screw or welding fasteners. It is advantageous if, prior to the connection, the sliding element 14 is preheated to the extent that it is constantly under membrane pressure at the operating temperatures of the bearing, that is to say a voltage acting on all sides with respect to the surface, whereby crease effects can be avoided. The preheating temperature may be selected from a range having a lower limit of 50 ° C and an upper limit of 150 ° C.

In particular, this sliding element 14 is made of a metal, such as e.g. a polished stainless steel sheet. However, plastics such as e.g. POM, UHMWPE, or the like, or coatings, e.g. with epoxy resin.

The metal element 5 is formed in this embodiment by metal profiles 11 with an L-shaped cross-section. Of course, in all other variants of the invention, such L-shaped profiles can be used or it is generally possible to use a wide variety of metal profiles or angle profiles in the invention for the metal element 5.

It should be mentioned at this point that the anchor plate 1 or sliding plate 2 can have a wide variety of dimensions or dimensions, which are based on the respective requirement with respect. The mechanical stress of the building warehouse. For example. Such anchor plates 1 or sliding plates 2 can have a surface area of up to 2 m × 1.5 m.

To improve the mechanical stability of the anchor plate 1 or sliding plate 2, it is possible, as shown in Fig. 5, to install within the concrete element 6 reinforcements for the concrete element 6, for example. In the form of reinforcing bars. These reinforcing elements 15 may, for example, be connected to the metal element 5, ie the metal profiles 11, for example. Welded. But there are also other connection methods possible, for example. Screwing.

In particular, these reinforcing elements 15, as shown in Fig. 5, may be arranged in the manner of a grid, but there are also possible embodiments in which only reinforcing elements 15 are arranged in one direction. The reinforcing elements 15 can extend over the entire width or the entire length of the concrete element 6 or are also possible embodiments in which these reinforcing elements extend over only a portion of these dimensions.

From Fig. 5 is further seen that the metal element 5 can be carriers of different attachments. In the case of the embodiment according to FIG. 5, these are tabs 16 which protrude outwards at least approximately at right angles from the metal element 5 and which have a bore in order to secure the anchor plate 1 or sliding plate 2 to the respective one as screw fastening

Building part to be used. These tabs 16 are welded in particular to the metal element 5.

However, there is also the possibility within the scope of the invention that these tabs 16 project through the metal element 5 and extend into the concrete element 6 and in this via, for example, suitable anchoring means, e.g. Claws or the like., Are attached.

FIG. 6 shows an embodiment variant of the anchor plate 1 or sliding plate 2 in which the reinforcing elements 15 likewise project through the metal element 5 and thus protrude beyond the side surfaces of the metal element 5. This embodiment variant of the invention is particularly suitable for a concrete connection of the anchor plate 1 or sliding plate 2, for which purpose these reinforcing elements 15 can be concreted in during the production of the subsequent structural part in this.

In a modification to this, it is possible that these outwardly projecting reinforcing elements 15 only attached to the outer surface of the metal element 15, for example. Welded. As can be seen further from FIG. 6, it is possible within the scope of the invention for these reinforcing elements 15 projecting outwards to be designed in the manner of a head bolt. In general, there is the possibility that these reinforcing elements may have very different geometries for better power transmission in the adjacent components of the Bauwerldagers.

In Fig. 6 is further shown by dashed lines that reinforcing elements 15, for example. In the form of a head bolt, can project beyond the top surface 9 in order to improve the connection of the anchor plate 1 to adjacent building parts.

Of course, in the context of the invention, there is also the possibility that such reinforcing elements 15 project beyond the bottom surface 10.

In general, it should be noted that it is not mandatory, as shown in Fig. 6, that such reinforcing elements 15 protrude over all side surfaces of the metal element 5, but depending on the requirements of the power transmission such reinforcing elements 15 only over one of the side surfaces, eg. be formed only over one or two opposing, protruding.

The anchor plate 1 according to FIG. 6 additionally has lifting eyes 17, which are formed projecting beyond the top surface 9 and which are arranged diagonally to one another in this case. Instead of these eyelets 17, for example, transport hooks or the like. May be arranged. It is possible with these transport aids that such anchor plates 1 for installation on the building by means of appropriate tools, for example. Cranes, can be placed easily. In addition, these eyebolts 17 are also for transport by truck, ie the same loading and unloading of advantage. Again, the metal / concrete composite element 4 according to the invention proves to be an advantage, since these transport aids, so for example. The lifting eyes 17, during the manufacture of the anchor plate 1 or sliding plate 2 can be embedded in concrete, so there are no additional connection measures required , These transport aids can subsequently also be used as reinforcing elements 15, that is to say for power transmission in the anchor plate 1 or sliding plate 2. Finally, FIG. 7 shows an embodiment variant of the invention in which the anchor plate 1 or sliding plate 2 is a carrier for a wide variety of attachments. On the one hand, for this purpose, the metal element 5 may have a so-called indicator scale 18, as is prior art for such anchor plates 1 and sliding plates 2, as well guide elements 19 may be arranged on the metal element 5, said guide elements 19, as shown in

Prior art is known to limit the mobility of sliding plates arranged above 2 in one direction. For example. is so that a longitudinal mobility but not a transverse mobility of the overlying sliding plate 2 possible. By the guide planes, which may be provided with a sliding material, for example. PTFE, POM, UHMWPE, or the like, or coatings, e.g. with epoxy resin, lateral wind forces, for example. For bridges, can be better controlled. These guide levels can also be taken into account in the manufacture of the anchor plates 1 and sliding plates 2 by a corresponding groove is provided in the concrete element 6, in the sequence engages a corresponding web on the overlying sliding plate, said groove with a sliding material, eg PTFE, POM, UHMWPE, or the like, or coatings, e.g. may be at least partially lined with epoxy resin.

The metal element 5 can further serve, for example, as a carrier of nameplates, measurement levels, etc.

The metal elements 5 may be made of a ferritic steel.

In general, it is also possible that these anchor plates 1 via the metal element 5 on the building, e.g. a steel bridge to be welded. In this case, no over the metal element 5 projecting reinforcing elements 15 are arranged.

The exemplary embodiments show possible embodiments of the plate element, it being noted at this point that the invention is not limited to the specifically illustrated embodiments of the same, but rather also various combinations of the individual embodiments are mutually possible and this variation possibility due to the teaching of technical action by representational Invention in the skill of those skilled in this technical field. For the sake of order, it should finally be pointed out that, for a better understanding of the construction of the panel element, this or its components have been shown partially unevenly and / or enlarged and / or reduced in size.

Above all, the individual in Figs. 1; 2; 3; 4; 5; 6; 7 embodiments form the subject of independent solutions according to the invention.

Reference to position

1 anchor plate

2 sliding plate

3 plate body

4 metal / concrete composite element

5 metal element

6 concrete element

7 scope

8 side surface

9 top surface 10 bottom surface

11 metal profile

12 metal pot

13 angulation

14 sliding element

15 reinforcement element

16 tab

17 transport eyelet

18 Display scale 19 Guide element

Claims

Patent claim

1. plate element in the form of an anchor plate (1) or sliding plate (2) for a building warehouse with a plate body (3), characterized in that the plate body (3) is a metal / concrete composite element (4) of a concrete element (6) and a metal element (5), wherein the concrete element (6) is at least partially surrounded by the metal element (5).

2. Plate element according to claim 1, characterized in that the metal element (5) by a metal frame or a metal pot (12) is formed.

3. Plate element according to claim 2, characterized in that the metal frame is formed from interconnected metal profiles (11).

4. Plate element according to one of claims 1 to 3, characterized in that the metal element (5) on one or more inner, the concrete element (6) facing surface ^) reinforcing elements (15) for the concrete element (6).

5. Plate element according to one of claims 1 to 4, characterized in that the metal element (5) on one or more outer, the concrete element (6) facing away from surface (s) reinforcing elements (15) for transmitting power into the structure.

6. plate element according to claim 4 and 5, characterized in that the reinforcing elements (15) through the metal element (5) extend therethrough.

7. plate element according to one of claims 1 to 6, characterized in that in the concrete element (6) reinforcing elements (15) and / or transport aids are arranged, which project beyond the surface of the concrete element (6).

8. Plate element according to one of claims 1 to 7, characterized in that a compressive strength of the concrete element (6) is at least as great as the compressive strength of a subsequent component of the structure.

9. Plate element according to one of claims 1 to 8, characterized in that on a surface of the concrete element (6) is arranged, in particular metallic, sliding element (14) having a surface area - viewed in plan view - which is so large that the top surface (9) of the concrete element (6) is covered by, and which is connected to the metal element (5).

10. A method for producing a plate element in the form of an anchor plate (1) or sliding plate (2) for a Bauwerklager, in particular according to one of claims 1 to 9, characterized in that a metal frame is placed on a precision plate, the one the respective requirements flatness exceeding the flatness of the plate element, and the metal frame is poured with concrete for producing a concrete element (6), optionally after arranging reinforcing elements (15) on the metal frame.

11. A method for producing a sliding plate according to claim 10, characterized in that on a surface of the concrete element (6) a, in particular metallic, sliding element (14) is arranged, which has a surface area - viewed in plan view - which is so large in that the top surface (9) of the concrete element (6) is covered thereby, and which is connected to the metal frame, wherein the sliding element (14) is preheated on the concrete element (6) prior to placement.