Crossing element and concrete floor

Abstract

Crossing element (1) which is designed in such a way that it connects at least two movement joints (2) in a concrete floor, wherein the concrete floor is supported on a base (3) and with - a support element (4) which is designed such that it is supported on the base (3), and - a connecting element (5) which surrounds the support element (4) and is designed such that it can be fastened to the edge rails (6) of the at least two expansion joints (2), wherein - the connecting element (5) has the shape of a first hollow cylinder which is divided in the axial direction into at least two semi-cylindrical shell elements (7), wherein - the support element (4) has a ground engagement plate (8), and wherein - the support element (4) has a second hollow cylinder (9) which extends away from the ground engagement plate (8), characterized in that - the support element (4) has a third hollow cylinder (10), wherein - the second hollow cylinder (9) and the third hollow cylinder (10) are designed to be telescopically displaceable into one another by means of a screw arrangement (11) which is functionally connected to both the second hollow cylinder (9) and the third hollow cylinder (10) in order to fix the position of the second hollow cylinder (9) with respect to the third hollow cylinder (10), and wherein - the third hollow cylinder (10) has a flange collar (15) surrounding the third hollow cylinder (10).

Description

Field FieldThe invention relates to an intersecting element which is designed to connect at least two movement joints in a concrete floor to one another, the concrete floor being mounted on a base according to the preamble of the independent claim 1.Floor moving joints are mainly used in connection with large concrete floors resting on a bed, e.g. a sand bed. Large concrete floors are constructions consisting of concrete slabs and are cast directly in situ, for example on a bed such as a sand bed at the construction site. As a rule, it is necessary to cover relatively large surfaces with concrete. Due to the shrinkage and thermal movements of the concrete, large areas must be divided into smaller parts, e.g. concrete slabs with moving joints. A movement joint must allow adjacent concrete slabs of the concrete floor to move horizontally with respect to one another on account of shrinkage and thermal movements. These movements are here movements in the direction of the joint and perpendicular to the joint. Vertical movements perpendicular to the slab plane, on the other hand, must be prevented, i.e. the joint must be able to transmit vertical loads between the concrete slabs of a concrete floor.Between the ends of two floor moving joints in a concrete floor or at intersections at which the ends of a plurality of floor moving joints in the concrete floor do not meet plane-parallel, special intersection elements can be used to connect the ends of the floor moving joints in the concrete floor to one another. A purpose of such special crossing elements is to divide the concrete floor properly into concrete slabs even at the ends of the floor moving joints and thus to ensure that the concrete slabs of the concrete floor can also move horizontally relative to one another at the ends of the floor moving joints.Objective: ObjectiveIt is the object of the invention to provide an improved crossing element which is designed to connect at least two movement joints in a concrete floor to one another.Brief Description of the InventionThe crossing element according to the invention is characterized by the definitions according to independent claim 1.Preferred embodiments of the crossing element are defined in dependent claims 2 to 6.In the present case, a concrete floor according to claim 7 is also defined.Table of the Figure.The invention is described in more detail below with reference to the figures, of which FIG. 1 shows an embodiment of the crossing element, FIG. 2 shows the crossing element shown in FIG. 1 in a side view, FIG. 3 shows the crossing element shown in FIG. 1 in plan view, FIG. 4 shows the crossing element shown in FIG. 1 in cross section along the line A-A in FIG. 3, FIG. 5 shows an arrangement in which a crossing element as shown in FIG. 1 is installed on a bed and four moving joints in the form of a sine wave are connected to the crossing element, FIG. 6 shows the arrangement shown in FIG. 5 in plan view, FIG. 7 shows another arrangement in which a crossing element is installed on a base as in FIG. 1 and three moving joints in the form of a sine wave are connected to the crossing element, FIG. 8 shows a further arrangement, in which an intersecting element according to FIG. 1 is installed on a base and in which two movement joints having a sinusoidal shape and one movement joint having a linear shape are connected to the intersecting element, FIG. 9 shows another arrangement in which an intersecting element is installed on a base as in FIG. 1, and in which a moving joint having a sinusoidal shape and two moving joints having a linear shape are connected to the intersecting element, FIG. 10 shows a further embodiment of the crossing element, and FIG. 11 shows the crossing element shown in FIG. 10 in a side view.DETAILED DESCRIPTIONThe intersection element 1 and some embodiments and variants of the intersection element 1 are presented in more detail below.The crossing element 1 is designed such that it connects at least two moving joints 2 to one another in a concrete floor (not shown), wherein the concrete floor rests on a base 3, such as a sand bed.The crossing element 1 has a support element 4 which is designed such that it is supported on the base 3.The crossing element 1 consists of a connecting element 5, which surrounds the support element 4 and is designed such that it can be fastened to the edge rails 6 of the at least two movement joints 2.The connecting element 5 is in the form of a first hollow cylinder (not provided with a code number) which is divided in the axial direction into at least two semi-cylindrical shell elements 7, or alternatively is designed in the axial direction such that it can be divided into at least two semi-cylindrical shell elements 7.Since the connecting element 5 has the form of a first hollow cylinder which is divided in the axial direction into at least two semi-cylindrical shell elements 7 or the connecting element 5 is designed such that it can be divided in the axial direction, it is possible to fasten a plurality of movement joints 2 to the crossing elements 1 by welding at different angles to one another, not only at 90° or 180° to one another.In the concrete floor, edge rails 6 of different movement joints 2, which partially horizontally delimit the same concrete slab in the finished concrete floor and whose ends meet at an intersecting element 1, as shown in FIGS. 5 and 6, are fastened by welding to the same semi-cylindrical shell element 7 of the first hollow cylinder of the intersecting element 1. In this way, a semi-cylindrical shell element 7 together with the edge rails 6 of different moving joints 2 which partially horizontally delimit the same concrete slab in the finished concrete floor and whose ends meet at an intersecting element 1 forms a unit in the finished concrete floor which enables a proper horizontal relative movement of the concrete slabs of the concrete floor.FIGS. 5 to 7 show the connection of moving joints 2 with sinusoidal shape using the intersecting element 1, but the intersecting element 1 can also be used for connecting at least one moving joint 2 with sinusoidal shape to at least one moving joint 2 with linear shape, as shown in FIGS. 8 and 9, or for connecting a plurality of moving joints 2 with linear shape.The central angle of at least one semi-cylindrical shell element 7 of the semi-cylindrical shell elements 7 can be 90°, 120°, 180° or 270°, for example.If the crossing element 1 is designed to connect two moving joints 2 in a concrete floor to one another, so that the two moving joints 2 are arranged in a line in the concrete floor, i.e. form an I-shaped structure in the concrete floor, the first hollow cylinder can be divided into two semi-cylindrical shell elements 7, which each have a central angle of 180°.If the crossing element 1 is designed to connect two moving joints 2 in a concrete floor to one another, so that the two moving joints 2 are arranged at an angle of 90° with respect to one another in the concrete floor, i.e. form an L-shaped structure in the concrete floor, the first hollow cylinder can be divided into two semi-cylindrical shell elements 7 so that a first of the semi-cylindrical shell elements 7 has a central angle of 90° and a second of the semi-cylindrical shell elements 7 has a central angle of 270°.When the crossing member 1 is formed to connect three moving joints 2 in a concrete floor to each other so that the three moving joints 2 are arranged to form a T-shaped structure in the concrete floor, the first hollow cylinder may be divided into three semi-cylindrical shell members 7 so that a first and a second of the semi-cylindrical shell members 7 have a central angle of 90° and a third of the semi-cylindrical shell members 7 has a central angle of 180°.When the crossing member 1 is formed to connect three moving joints 2 in a concrete floor to each other so that the three moving joints 2 are arranged to form a Y-shaped structure in the concrete floor, the first hollow cylinder may be divided into three semi-cylindrical shell members 7 each having a central angle of 120°.When the crossing member 1 is formed to connect four moving joints 2 in a concrete floor to each other so that the four moving joints 2 are arranged to form an X-shaped structure in the concrete floor, the first hollow cylinder may be divided into four semi-cylindrical shell members 7 each having a central angle of 90°.The support member 4 connecting member 1 preferably, but not necessarily, comprises a ground engaging plate 8.The support element 4 of the connecting element 1 preferably, but not necessarily, comprises a second hollow cylinder 9 which protrudes from the ground engagement plate 8.The support element 4 of the connecting element 1 preferably, but not necessarily, has a third hollow cylinder 10, wherein the second hollow cylinder 9 and the third hollow cylinder 10 are telescopically displaceable one inside the other, and wherein a screw arrangement 11 is functionally engaged both with the second hollow cylinder 9 and with the third hollow cylinder 10 in order to fix the position of the second hollow cylinder 9 with respect to the third hollow cylinder 10. This serves to adjust the length / height of the support element 4 of the connecting element 1, for example, depending on the thickness of the concrete floor. The screw arrangement 11 may, for example, have continuous threaded bores 12 in one of the second hollow cylinder 9 and the third hollow cylinder 10 and bolts 13 which are arranged in the threaded bores and are designed in such a way that they press against the other of the second hollow cylinder 9 and the third hollow cylinder 10 in order to fix the position of the second hollow cylinder 9 with respect to the third hollow cylinder 10. In the embodiment of the crossing element 1 shown in the figures, the screw arrangement 11 has continuous threaded bores 12 in the third hollow cylinder 10 and bolts 13 which are arranged in the threaded bores and are configured to press against the second hollow cylinder 9 in order to fix the position of the second hollow cylinder 9 with respect to the third hollow cylinder 10.If the support element 4 of the connecting element 1 has a third hollow cylinder 10, a cover plate 14 can be accommodated at the end of the third hollow cylinder 10 in order to close the end of the third hollow cylinder 10.If the support element 4 of the connecting element 1 has a third hollow cylinder 10, the third hollow cylinder 10 can have a flange collar 15 which surrounds the third hollow cylinder 10. The flange collar 15 can have at least two incisions (not shown in the figures), which are each designed to receive a separating plate of one of the at least two movement joints 2. In the arrangements shown in Figs. 5 and 6, the flange collar 15 has no such cuts, but the partition plates of the moving joints 2 are provided with cuts (not denoted by a reference numeral) adapted to receive the flange collar 15.If the support element 4 of the connecting element 1 consists of a third hollow cylinder 10, the at least two semi-cylindrical shell elements 7 are preferably, but not necessarily, fastened to the third hollow cylinder 10 by means of screws 16 made of polymer or the like, such as nylon for example. The choice of material for the screws 16 is intended to ensure that the semi-cylindrical shell elements 7 remain in their position during the installation of the crossing element and that the screws 16 can flex or break as a result of relative movements between the concrete slabs of the concrete floor.If the support element 4 of the connecting element 1 has a third hollow cylinder 10, the third hollow cylinder 10, as shown in FIGS. 10 and 11, can have a support flange 18 which is fastened to the third hollow cylinder 10 and surrounds the third hollow cylinder 10 below the at least two semi-cylindrical shell elements 7. Such a support flange 18 enables the support of the edge rails 6 of the at least two moving joints 2 during the assembly and fastening of the edge rails 6 of the at least two moving joints 2.A method for producing a concrete floor on a base 3, for example a sand bed, is described in more detail below.The method comprises the provision of an intersecting element 1 according to one of the embodiments or variants presented here.The method comprises supporting the crossing element 1 on the base 3.The method comprises the provision of at least two movement joints 2 each having a separating plate 17 and two edge rails 6.The method comprises attaching the two edge rails 6 of each of the at least two moving joints 2 by welding to different semi-cylindrical shell elements 7 of the at least two semi-cylindrical shell elements 7.In the concrete floor, edge rails 6 of different movement joints 2, which partially horizontally delimit the same concrete slab in the finished concrete floor and whose ends meet at an intersecting element 1, as shown in FIGS. 5 and 6, are fastened by welding to the same semi-cylindrical shell element 7 of the first hollow cylinder of the intersecting element 1. In this way, a semi-cylindrical shell element 7 together with the edge rails 6 of different moving joints 2 which partially horizontally delimit the same concrete slab in the finished concrete floor and whose ends meet at an intersecting element 1 forms a unit in the finished concrete floor which enables a proper horizontal relative movement of the concrete slabs of the concrete floor.The concrete floor is then placed on a base 3, for example a sand bed.The concrete floor has an intersecting element 1 according to one of the embodiments or variants presented here, which rests on the base 3, and at least two moving joints 2 each with a separating plate and two edge rails 6.In the concrete floor, the two edge rails 6 of each of the at least two moving joints 2 are fastened by welding to different semi-cylindrical shell elements 7 of the at least two semi-cylindrical shell elements 7.In the concrete floor, edge rails 6 of different movement joints 2, which partially horizontally delimit the same concrete slab in the finished concrete floor and whose ends meet at an intersecting element 1, as shown in FIGS. 5 and 6, are fastened by welding to the same semi-cylindrical shell element 7 of the first hollow cylinder of the intersecting element 1. In this way, a semi-cylindrical shell element 7 together with the edge rails 6 of different moving joints 2 which partially horizontally delimit the same concrete slab in the finished concrete floor and whose ends meet at an intersecting element 1 forms a unit in the finished concrete floor which enables a proper horizontal relative movement of the concrete slabs of the concrete floor.It will be apparent to those skilled in the art that the basic idea of the invention can be implemented in various ways as the technical advancement proceeds. The invention and its embodiments are therefore not limited to the above examples, but may vary within the scope of the claims.

Claims

Crossing element (1) which is designed in such a way that it connects at least two movement joints (2) to one another in a concrete floor, wherein the concrete floor is supported on a base (3) and having - a support element (4) which is designed in such a way that it is supported on the base (3), and - a connecting element (5) which surrounds the support element (4) and is designed in such a way that it can be fastened to the edge rails (6) of the at least two movement joints (2), wherein - the connecting element (5) has the form of a first hollow cylinder which is divided in the axial direction into at least two semi-cylindrical shell elements (7), wherein - the support element (4) has a floor engagement plate (8), and wherein - the support element (4) has a second hollow cylinder (9) which extends away from the floor engagement plate (8), characterized in that, the supporting element (4) having a third hollow cylinder (10), wherein - the second hollow cylinder (9) and the third hollow cylinder (10) are configured to be telescopically displaceable one inside the other, by means of a screw arrangement (11) which is functionally connected both to the second hollow cylinder (9) and to the third hollow cylinder (10), in order to fix the position of the second hollow cylinder (9) with respect to the third hollow cylinder (10), and wherein - the third hollow cylinder (10) has a flange collar (15) which surrounds the third hollow cylinder (10).Crossing element (1) according to claim 1, characterised in that the screw arrangement (11) has continuous threaded bores (12) in one of the second hollow cylinder (9) or the third hollow cylinder (10) and bolts (13) which are arranged in the threaded bores and are designed in such a way that they press against the other of the second hollow cylinder (9) or the third hollow cylinder (10) in order to fix the position of the second hollow cylinder (9) with respect to the third hollow cylinder (10).Crossing element (1) according to claim 1 or 2, characterised in that a cover plate (14) is arranged at the end of the third hollow cylinder (10).Crossing element (1) according to one of Claims 1 to 3, characterized in that the flange collar (15) has at least two incisions which are each designed to receive a separating plate of one of the at least two movement joints (2).Crossing element (1) according to one of Claims 1 to 4, characterized in thatthe at least two semi-cylindrical shell elements (7) are fastened to the third hollow cylinder (10) by means of screws (16) made of polymer or the like.The crossing element (1) according to any one of claims 1 to 5, characterized in thatthe central angle of at least one semi-cylindrical shell element (7) of the semi-cylindrical shell elements (7) is one of 90°, 120°, 180° and 270°.Concrete floor which rests on a base (3), for example a sand bed, having - an intersecting element (1) according to one of Claims 1 to 6, which is supported on the base (3), and - at least two joints (2) each having a separating plate and two edge rails (6), wherein - the two edge rails (6) of each of the at least two joints (2) are fastened by welding to different semi-cylindrical shell elements (7) of the at least two semi-cylindrical shell elements (7).

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