DE29900313U1 - Joint element between two concrete bodies with external joint sealing tape - Google Patents

Description

LÖSENBECK · STRAACKE

Patent attorneys

Dr. Otto Loesenbeck (1931-1980) Dipl.-Ing. A. Stracke Dipl.-Ing. K.-O. Loesenbeck Dipl.-Phys. P. Specht

Representative at the European Patent Office Lothar TiletSChke Jöllenbecker Straße 164

Im Sundernkamp 10 d-33613 Bielefeld

^ 1 Π 0 F η crer ^Phone: (0521)98618-0

JZ-IJUJ^iIgCi Fax: (0521)890405

e-mail 1: pa-loesenbeck@t-online.de

4/12

January 8, 1999

Separating joint element between two concrete bodies with external Joint sealing tape

The invention relates to a separating joint element as a permanent formwork between two in-situ concrete slabs, with a soft material insulation arranged between two formwork elements made of metal sheets and connected to one another, wherein the formwork elements are angular in shape.

A separating joint element of this type is known (DE-GM 298 06 404), in which a holder for a joint sealing tape is provided in the middle horizontal area. The formwork elements are attached to a blind layer and form a permanent formwork after the concrete slabs have been poured.

It is also known to arrange the joint sealing tape between the blind layer and the concrete slabs to be poured, extending on both sides of the separating joint, i.e. in the outer area of the separating joint.
15

Dr. LOESENBECK (1980) · DIPL-ING. STRACKE -&Bgr;&Igr;?&Igr;_.»&&Kgr;3. LCfegENEkCK - BATENIANWÄLTE - BIELEFELD Lothar Tiletschke Registration text from 08.01.99 Page

The invention is based on the object of designing a separating joint element of the type mentioned at the beginning in such a way that it can be provided with a joint sealing tape located on the outside of the separating joint and that the expansion joint between two concrete bodies to be cast can be created on the construction site in a short time.

This object is achieved according to the invention by a separating joint element which, in the area of the floor which can be fixed on a sub-base or another base, has a receptacle for a joint sealing tape which is delimited by profile rails on the longitudinal edges running parallel to the separating joint and which profile rails are connected by brackets to the plates enclosing the separating joint.

In an advantageous embodiment, the receptacle for the joint sealing tape has a receiving groove arranged below the soft material insulation and open at the bottom, into which a central longitudinal rib of the joint sealing tape, which is preferably designed as a rectangular hollow rib, engages.

This hollow rib of the joint sealing tape and its arrangement in a receiving groove of the separating joint element fixes the joint sealing tape against lateral displacement and thus aligns the joint sealing tape with the separating joint.

Further features of the invention emerge from the subclaims.

An exemplary embodiment of the separating joint element according to the invention is shown in the drawing and is described below.

Show it:

Figure 1 shows a separating joint between two concrete bodies with external

joint sealing tape and

Dr. LOESENBECK (1980) · DIPL-ING. STRACKE -BIPL*^. LCt5S*ENrikCK - BATeNIÄNWÄLTE - BIELEFELD Lothar Tiletschke Registration text from 08.01.99 Page

Figure 2 shows a perspective view of the separating joint element with inserted joint sealing tape.

Figure 1 shows a schematic representation of a separating joint 1, which is provided with a soft material insulation 2 and is arranged between plate-shaped in-situ concrete parts 3,4.

The separating joint 1 is assigned a joint sealing tape 5, which is provided between a blind layer 6 and the concrete slabs 3 and 4 to be cast and extends on both sides of the separating joint 1.

To form this separating joint 1 and to accommodate the joint sealing tape 5, a separating joint element 7 is used as a permanent formwork, which has plates 8 made of sheet metal, between which the soft material insulation 2 is arranged. The plates 8 are bent at the upper longitudinal edge and have an edge strip 9, while plate strips 10 are provided on the lower longitudinal edge, which are integral with the plates 8 and angled outwards. These plate strips 10 form the side walls of a receiving groove 11 for a middle rib 12 of the joint sealing tape 5, which is designed as a hollow rib, preferably as a rectangular hollow rib. The outward bending of the plate strips 10 simplifies the pushing of the separating joint element onto the middle rib of the joint sealing tape and thus the insertion of the middle rib into the receiving groove 11.

The receptacle for the joint sealing tape 5 is limited at the longitudinal edges by profile rails 13, which in the illustrated embodiment are designed as angle profiles.

The holder 14 for the joint sealing tape is not only open downwards but also upwards, with the upper opening being bridged by parts 15

Dr. LOESENBECK (1980) · DIPL-ING. STRACKE -«9&iacgr;&Rgr;&Igr;_.»&*3. LCfcS^N&CK - SAT E^!ANWÄLTE - BIELEFELD Lothar Tiletschke Registration text from 08.01.99 Page

of wire brackets 16, which are arranged at a distance from each other and connect the profile rails 13 to the plates 8.

The wire bracket 16 shown in Fig. 2 is bent three times and has a leg 17 which is welded to the plate 8. Furthermore, the parts 18 and 19 are welded to the inner surfaces of the profile rails 13.

As indicated by the dot-dash lines, the wire bracket can also have a leg 20 that is welded to the profile rail 13 in the area of the profile rail. The bracket then has a triangular outer contour.

These brackets are used when the separating joint element is subjected to high pressure from the concrete.

In addition to the middle rib 12, the joint sealing tape 5 has longitudinal ribs 21 on the side facing away from the blind layer 6, which are T-shaped in cross section. This cross-sectional shape of the longitudinal ribs significantly lengthens the path of pressing water that wants to penetrate into the joints between the concrete parts transversely to the longitudinal ribs.

Through the upper opening of the holder 14 the concrete can completely fill the spaces between the longitudinal ribs.

On one end face of the separating joint element, tabs 22 are provided that are slightly angled outwards, so that adjacent separating joint elements have an overlap in the end-face connection area.

The profile rails 13 are fixed to the blind layer by mechanical fastening elements, e.g. nails, dowels or similar. To allow the fastening elements to pass through the profile rails 13, these are provided with holes 23.

Claims (10)

Dr. LOESENBECK (1980) · DIPL-ING. STRACKE -»StPL»-foG. LttSgENgSCK - eATEMlANWÄLTE - BIELEFELD Lothar Tiletschke Application text from 08.01.99 Page Protection claims 5 1. Separating joint element as permanent formwork between two in-situ concrete slabs, with a soft material insulation arranged between two metal sheets, connected formwork elements, the formwork elements being angular, characterized in that in the area of the floor that can be fixed on a sub-base (6) or another base, it has a receptacle (14) for a joint sealing tape (5) delimited by profile rails (13) on the longitudinal edges running parallel to the separating joint, and the profile rails (13) are connected by holders to the plates (8) enclosing the separating joint. 2. Separating joint element according to claim 1, characterized in that the joint sealing strip (5) is equipped with ribs (12, 21) running parallel to one another on the side facing the separating joint and the middle rib (12) engages in a receiving groove (11) arranged below the soft material insulation (2) and open at the bottom. 3. Separating joint element according to claim 2, characterized in that the walls of the receiving groove (11) are integral with the plates (8) delimiting the separating joint. 4. Separating joint element according to claim 3, characterized in that the walls of the receiving groove (11) are angled outwards from the plates (8). 5. Separating joint element according to claim 1, characterized in that the retaining rings between the profile rails (13) and the separating joint delimiting Dr. LOESENBECK (1980) · DIPL-ING. STRACKE »»)»Pl4nG. lUs^EnJsCK - PATENT ATTORNEYS - BIELEFELD Lothar Tiletschke Application text from 08.01.99 Page Plates (8) are designed as wire brackets welded to the plates and the profile rails. 6. Separating joint element according to claim 7, characterized in that the wire brackets are bent several times by 90° and a section (15) bridges an upper opening of the receptacle (14) for the joint sealing tape (5). 7. Separating joint element according to claim 7, characterized in that the profile rails (13) are designed as angled sheet metal profiles and correspondingly bent parts of the wire brackets are welded to the angled inner surfaces of the profile rails (13). 8. Separating joint element according to claim 7, characterized in that the wire brackets have a triangular outer contour. 9. Separating joint element according to one of the preceding claims, characterized in that the plates (8) are provided on one end face with tabs (22) which are slightly angled outwards. 10. Separating joint element according to claim 1, characterized in that the profile rails (13) have holes (23) for the passage of mechanical fastening elements.