Gliding bed for concrete slabs, method for the production of a concrete slab, and structure with a gliding bed
A support device, a technology for concrete slabs, applied in the direction of construction, transportation and packaging, cohesive pavement laid on site, etc., can solve the problems of expensive, membrane damage, insufficient sliding friction characteristics, etc.
Inactive Publication Date: 2012-05-23
VIENNA UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
But the disadvantage is that the crack formation also extends to the surface and the application of reinforcement is complex and expensive
[0008] The disadvantage of the last-mentioned structure is that the sliding friction caused by the air escaping from the air cushion is only insufficiently improved, so that the concrete slab rests on a small bearing surface with high surface pressure; consumption
[0010] It is particularly disadvantageous here that the membranes can be damaged by an intermediate layer of sand or the like, so that the sliding friction properties are only insufficient and the sliding properties are influenced uncontrollably by water penetrating between the individual membranes or between the membrane and the concrete
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[0044] exist figure 1 A largely schematically illustrated sliding bearing 1 between a concrete slab 2 and a substructure 3 is described in . The substructure 3 can consist, for example, of concrete or another suitable material, as described in the figures, or also only of hardened earth.
[0045] Arranged between the concrete slab 2 and the substructure 3 is a sliding bearing 1 according to the invention, which comprises a first membrane 4, a second membrane 5 and at least one layer 6 arranged between the membranes 4, 5, which The layers are permeable to gases and / or liquids. The permeable layer 6 can here be formed in the form of a material made of separate fibers, in particular a non-woven material or another suitable textile fabric. Fabrics, braids and knits made of threads with corresponding air-permeable and / or liquid-permeable properties can also be used for the at least one permeable layer 6 .
[0046] The first membrane 4 and the second membrane 5 are connected at the...
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A gliding bed (1) for a concrete slab comprises a first film (4) and a second film (5), wherein the first film (4) can be brought into contact with a base structure (3) of the concrete base slab, and the second film (5) can be brought into contact with a bottom side of the concrete slab by means of pouring the concrete onto the second film (5). The first film (4) and the second film (5) are tightly connected to each other at edges (7). In order to minimize friction between the concrete slab and the base structure (3), at least a gas- and liquid-permeable layer (6) formed from a nonwoven material and / or a textile fabric plane configuration item is provided between the first film (4) and the second film (5).
Description
technical field [0001] The invention relates to a sliding bearing for a concrete slab and a method for producing a concrete slab as well as a building comprising a substructure, a sliding bearing and a concrete floor. Background technique [0002] In the manufacture of concrete slabs, especially from concrete or fiber-reinforced concrete, joints are provided at intervals of 5 m to 8 m so that shortening due to discharge of heat of hydration, shrinkage and temperature drop can be accommodated in the joints, And avoid breaks in the paddle area. Seams have the disadvantage of being maintenance-intensive and prone to damage. [0003] Larger field widths of approximately 20 m are possible with reinforced concrete slabs made of concrete, the reinforcement being designed in such a way that the aforementioned shortening is absorbed by controlled crack formation in the interior of the slab field. The disadvantage, however, is that the crack formation also extends to the surface and...
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IPC IPC(8): E01C7/14
CPCE01C7/145Y10T428/24025
Inventor J·科勒格尔A·施魏格霍费尔
Owner VIENNA UNIVERSITY OF TECHNOLOGY