EP3835501B1 - Arrangement for connecting a structural part with a frontal exterior part - Google Patents

Description

Technical area

The present invention relates to an arrangement for connecting a building part with an external part in front of the building part.

State of the art

When connecting upstream external parts to building parts, for example when connecting a balcony to a ceiling/floor slab, the various forces that act on the upstream external part, i.e. tensile, compressive and/or transverse forces, must be safely and completely applied to the building or transferred to the subsurface. In addition, good thermal insulation must be ensured, as the upstream components are subject to strong thermal stress in practice.

Connection elements that have been known for a long time therefore generally have connecting elements for transmitting force to a structural part and a body made of insulating material, which brings about the greatest possible thermal insulation of the upstream outer part.

For example, this reveals DE 3 005 571 B1 a cantilever plate connection element with an elongated, cuboid insulating body made of thermally insulating material. The insulating body is interspersed with elongated, metal reinforcement elements which extend essentially transversely to the insulating body and which are designed to absorb tensile forces. In addition to these reinforcing elements, the cantilever plate connecting element has shear force bars made of reinforcing steel and steel construction parts that act as pressure elements.

From the DE 101 30 866 A1 a component for thermal insulation between a building and a projecting external part is known. The component has an insulating body as well as tensile, compressive and, if necessary, transverse force elements. The shear force element of the DE 101 30 866 A1 is formed by two crossing, mirror-inverted rods.

When connecting an upstream steel external part to a reinforced concrete structural part, the problem also arises that steel construction works with smaller tolerances than this is common in concrete construction. This tolerance discrepancy must be overcome when a projecting steel external part is connected to a reinforced concrete structural part created in concrete construction. To solve this problem, the DE 199 08 388 A1 an adjustable storage of the connecting element is proposed.

The WO 2018/163062 A1 describes a fastening device for a cantilevered component, the fastening device having a box element with an opening into which a knife-like element is inserted. The position of the knife-like element in the box element can be adjusted. For this purpose, the knife-like element is provided with a flange element which has a threaded hole arranged above the knife-like element and a threaded hole arranged below the knife-like element.

From the WO 2005/035892 A1 a connection element according to the preamble of claim 1 is known.

As these solutions known from the prior art show, a large number of differently designed connection elements are currently used for the specific connection situations that occur in a variety of variants. However, it would be desirable to have connection elements that can be used with a high degree of flexibility when structural requirements differ from one another. These could be cheaply produced in larger quantities and kept in stock.

Presentation of the invention

The present invention is based on the object of providing a connecting element that can be used with good static load capacity and good thermal insulation with high flexibility for connecting a wide variety of variants of external parts and building parts. This object is achieved according to the invention by the arrangement for connecting a structural part with an external part in front of the structural part according to independent claim 1. Further advantageous aspects, details and refinements of the invention result from the dependent claims, the description and the drawings.

The arrangement according to the invention for connecting a building part with an outer part located in front of the building part comprises at least one force introduction element on the building part side which can be arranged in the building part, the force introduction element on the building part side having an end face on its side facing away from the building part in the installed state, the end face of the When installed, the force introduction element on the building part is flush with the outside of the building part facing the outer part.

The arrangement also includes at least one external part-side force introduction element that can be arranged in the outer part, the force introduction element on the external part having an end face on its side facing away from the outer part in the installed state, the end face of the external part-side force introduction element in the installed state being flush with the outside of the outer part facing the building part.

In addition, at least one insulating body arranged in the installed state between the structural part and the upstream outer part and at least one connecting element penetrating the insulating body in the installed state are provided. In the installed state, the connecting element is firmly connected to the force introduction element on the building part side and firmly connected to the force introduction element on the outside part side, the connecting element penetrating the force introduction element on the outside part side in the installed state. The connecting element has an external thread in its section projecting into the outer part and/or in its section projecting into the structure, wherein in the installed state at least one threaded nut is screwed onto the section of the connecting element which projects into the outer part.

The arrangement also comprises at least one cylindrical sleeve which is supported on the end face of the force introduction element on the outer part side and on the end face of the force introduction element on the building part side and encompasses the connecting element, the sleeve in the installed state after fastening the at least one threaded nut with a predetermined tightening torque between the end face of the outer part side Force introduction element and the end face of the force introduction element on the building part is clamped.

The cylindrical sleeve provided in the arrangement according to the invention surrounds the connecting element which is firmly connected to a force introduction element. When installed, this connecting element penetrates the force introduction element on the outside part. When installing the arrangement according to the invention, a threaded nut is screwed onto an external thread provided in the section of the connecting element that projects into the outer part. This screwing of the threaded nut takes place with a predetermined tightening torque, whereby the sleeve is clamped between the end face of the force introduction element on the outside part and the end face of the force introduction element on the building part side. The sleeve then forms a non-slip connection between the building part and the external part, by means of which transverse forces can be transmitted.

The arrangement according to the invention for connecting a building part with an outer part in front of the building part thus provides a universal connection, with the help of which a cantilevered element can be connected to a building regardless of the specific design of the outer part and regardless of the specific design of the building part. The requirements of good static load capacity and good thermal insulation are met by the arrangement according to the invention. What is particularly noteworthy, however, is the great flexibility with which the arrangement can be used in a wide variety of installation situations. All that is required are two contact surfaces on which the sleeve can be supported on the building part on the one hand and on the external part on the other. Otherwise, the arrangement can be used in connection with any type of external steel part, reinforced concrete external part, steel structure part and reinforced concrete structure. In any case, the sleeve forms a non-slip connection between the structural part and the external part, by means of which transverse forces and compressive forces can be transmitted.

If an external part is connected to a reinforced concrete building part, according to a preferred embodiment, the force introduction element on the building part side is firmly connected to at least one reinforcing element for absorbing tensile or compressive forces, with the at least one reinforcing element for absorbing tensile or compressive forces protruding into the structural part. In the case of a reinforced concrete building part, this represents the simplest, safest and most durable fastening option for the force introduction element on the building part.

In this context, it should be mentioned that it is clear to the person skilled in the art that in the case of connecting an external part to a steel structure part, the force introduction element on the building part is either designed as an end plate welded to the steel structure part or the force introduction element on the building part represents an integral part of the steel structure of the steel structure part.

If a reinforced concrete outer part is connected to a building part, then according to a preferred embodiment, the force introduction element on the outer part is firmly connected to at least one reinforcing element for absorbing tensile or compressive forces, with the at least one reinforcing element protruding into the outer part for absorbing tensile or compressive forces. In the case of a reinforced concrete external part, this represents the simplest, safest and most durable fastening option for the force introduction element on the external part.

In this context, it should be mentioned that it is clear to the person skilled in the art that in the case of connecting a steel outer part to a building part, the force introduction element on the outer part is either designed as an end plate welded to the steel outer part or the force introduction element on the outer part represents an integral part of the steel structure of the steel outer part.

If a reinforced concrete outer part is connected to a building part, then according to a preferred embodiment, the force introduction element on the outer part is an outer part-side U-profile made of steel plates, the U-profile being an end plate forming the web of the U-profile and at least two, the legs has steel plates forming the U-profile. Reinforcement elements that are firmly connected to the U-profile, in particular welded, are provided to absorb tensile and compressive forces that protrude into the outer part. When installed, the end plate is flush with the outside of the outer part facing the building part and thus forms the end face of the force introduction element on the outer part.

At least one opening is provided in the end plate, with the connecting element penetrating the opening when installed. The connecting element has an external thread at least in its section projecting into the outer part, with a threaded nut being screwed onto the external thread arranged on the section of the connecting element projecting into the outer part in the installed state.

Particularly preferably, the reinforcement elements projecting into the outer part for absorbing tensile and compressive forces are firmly connected to the steel plates forming the legs of the U-profile, particularly preferably to the outside of the steel plates forming the legs of the U-profile. The space in the interior of the U-profile remains freely accessible, which is why screwing the threaded nuts can be carried out in a particularly simple manner.

The opening provided in the end plate of the U-profile on the outer part is preferably an elongated hole, the elongated hole preferably having an extension of 20 mm to 60 mm, particularly preferably 25 mm to 50 mm, particularly preferably 30 mm in the direction of its longitudinal axis mm to 40 mm. The connecting elements generally have a cross-sectional diameter of 8 mm to 16 mm. By designing the opening as an elongated hole, it is possible to adjust the projecting outer part relative to the building part. Before the threaded nut is finally tightened to fix the sleeve, the connecting element can be moved within the elongated hole. The preferred areas of expansion of the elongated holes are in the end plate of the U-profile on the outside part So make sure that the end plate penetrated by the connecting elements can be moved to a sufficient extent relative to the connecting elements.

According to a preferred embodiment described above, the building part side and/or the force introduction element on the outside part is firmly connected to at least one reinforcement element for absorbing tensile or compressive forces. This fixed connection can basically be implemented in any way. The force introduction element is preferably welded directly to the reinforcement element. According to a preferred embodiment, the force introduction element on the external part is a threaded sleeve, the threaded sleeve being screwed to the connecting element in the installed state. The threaded sleeve is preferably welded to the reinforcing element, with the thread axis coinciding with the longitudinal axis of the reinforcing element, which is generally designed as a reinforcing bar. The threaded sleeve provides an internal thread into which the connecting element is subsequently screwed with its external thread, which is required in this case.

If an outer steel part is connected to a reinforced concrete structure, a reinforced concrete outer part is connected to a steel structure part or an outer steel part is connected to a steel structure part, the force introduction element on the outside part is preferably a steel beam, particularly preferably an I-shaped steel beam, the steel beam having an end plate. In this case, the side of the end plate facing away from the steel beam forms the end face of the force introduction element.

According to the invention, the connecting element is a threaded bolt. According to the invention, the threaded bolt has an external thread in its section projecting into the outer part and in its section projecting into the structural part, which is used for the subsequent fastening of a threaded nut. A threaded bolt that is consistently provided with an external thread represents the most cost-effective option for realizing this property. In addition, the connecting element can be moved perpendicular to the end faces of the force introduction elements without having to pay attention to a central section of the connecting element that does not have an external thread.

According to the invention, the sleeve is a steel sleeve, preferably a stainless steel sleeve. A correspondingly thick-walled cylindrical stainless steel sleeve ideally provides all the properties desired for the sleeve provided according to the invention. A steel sleeve, in particular a stainless steel sleeve, is inexpensive to produce, readily available and has the strength required to transmit transverse forces. In addition, the sleeve can simply be put on Connecting element and in particular threaded onto a threaded bolt. A stainless steel sleeve also has the well-known advantages in terms of resistance to rust.

According to the invention, the cylindrical sleeve has an inner diameter between 20 mm and 30 mm. The inside diameter is preferably between 22 mm and 26 mm and particularly preferably 23 mm. According to the invention, the outer diameter of the cylindrical sleeve is between 40 mm and 60 mm. The outer diameter is preferably between 45 mm and 55 mm and particularly preferably 50 mm. By designing the sleeve with the mentioned areas for inner diameter and outer diameter, a sufficiently large contact area is provided in a particularly advantageous manner between the end faces of the sleeve and the end faces of the force introduction elements. In addition, due to its inner diameter, the sleeve can be easily threaded onto corresponding connecting elements, in particular threaded bolts. The outer diameter of the sleeve is chosen to be sufficiently large to ensure that the sleeve can transmit the forces occurring without deformation and with appropriate durability.

The advantages of the arrangement according to the invention for connecting a building part with an outer part in front of the building part are particularly evident when the outer part in front is a cantilevered plate, in particular a balcony, and the building part is a ceiling/floor slab of a building acts.

The arrangement according to the invention comprises at least one connecting element and correspondingly at least one cylindrical sleeve encompassing this connecting element. When installed, the connecting element is firmly connected to the force introduction elements, wherein according to a preferred embodiment the force introduction element is in turn connected to a reinforcing element for absorbing tensile or compressive forces. This means that the at least one connecting element is connected in the installed state to at least one reinforcing element for absorbing tensile or compressive forces. Whether this reinforcing element is a reinforcing element for absorbing tensile forces or a reinforcing element for absorbing compressive forces depends on the specific loading situation. If the external part is a freely cantilevered balcony in which tension is transferred in the upper reinforcement layer and pressure in the lower layer, the connecting element and sleeve should be provided in the compression plane, since in the tension plane the defined prestressing force would be reduced by the tensile load . As a result, transverse forces in the tensile plane would only be transmitted to a very limited extent via a non-slip connection. In contrast, a balcony supported at the front has a static system to which predominantly transverse forces have to be transmitted. Here it can be advantageous to provide a connecting element with a sleeve in both positions, i.e. in the tension plane and in the compression plane. Since in this case the components experience virtually no tension, a non-slip connection is possible in both layers.

To increase the static load capacity, according to the invention at least two connecting elements and at least two sleeves, preferably at least four connecting elements and at least four sleeves, particularly preferably at least six connecting elements and at least six sleeves, particularly preferably four connecting elements and four sleeves are provided. The static requirements associated with a specific installation situation can be met not only by appropriately adapting the number of arrangements according to the present invention, but also by adapting the number of connecting elements per arrangement. Likewise, the variable dimensioning of the outer part may require adjustment of the number of assemblies according to the present invention and the number of fasteners per assembly.

An adjustment of the projecting outer part relative to the building part in a vertical or horizontal direction is possible if elongated holes are provided in the end plate of the U-profile on the outer part. Due to the vertical or horizontal orientation of the elongated holes, the adjustment can be carried out intuitively by moving the outer part in the appropriate directions.

In a real installation situation, for example, a prefabricated balcony is equipped with, for example, six steel installation parts with U-profiles on the outside part, the end plates of which are all flush with the outside of the balcony, which faces the building part when installed.

When assembling the prefabricated balcony, it is first placed in its approximate position relative to the ceiling/floor slab. Due to the elongated holes in the end plates of steel installation parts on the exterior part, the connecting elements can be easily guided through the end plates. After the connecting elements have been placed, the threaded nuts are provisionally tightened on the external thread arranged on the section of the connecting element which projects into the structural part and on the external thread arranged on the section of the connecting element which protrudes into the outer part. This screwing is also possible without any problems because when the prefabricated balcony is manufactured, the interior space formed by the respective end plate and the two steel plates forming the legs of the U-profile are kept free of concrete using appropriate placeholders. After removing the placeholders, this space is available for screwing the threaded nuts.

In this state, it can be checked whether the height level, i.e. the level in the vertical direction, of the building part and the external part is identical or whether there is an offset. If, as in the example described here, the building part is a ceiling/floor slab and the external part is a prefabricated balcony, the steps provided in the finished state should be at the same height level. Any offset in the vertical direction can be easily compensated for thanks to the elongated holes. Alternatively, the position of the prefabricated balcony can be readjusted in the horizontal direction and, to a certain extent, the balcony can also be tilted, since the dimensions of the elongated holes are oriented both in the direction of their longitudinal axis and in the direction of the transverse axis of the elongated holes, which is oriented perpendicular to the longitudinal axis in the plane of the end plate exceeds the diameter of the connecting elements. The connecting elements guided through the elongated holes therefore have a certain amount of play in every direction in the plane of the end plates, which makes it possible for the entire prefabricated balcony to tilt slightly. In practice, it is possible to tilt the end plate and thus the entire outer part by up to 10°, preferably up to 7.5°, particularly preferably up to 5° and particularly preferably from 3° to 5°. The arrangement according to the present invention therefore enables not only a vertical and horizontal adjustment of the outer part but also a rotational adjustment of the outer part.

After the external part has been finally positioned relative to the ceiling/floor slab of the building, the threaded nuts are tightened with a predetermined, defined tightening torque. As a result, the sleeve is prestressed between the two end faces of the force introduction elements, which are arranged opposite one another in the joint. Transverse forces that occur can therefore be transmitted in the joint through friction of the sleeve on the end faces. After adjusting and fixing the prefabricated balcony, the interior of the U-profiles are cast with concrete or a resin or another suitable filling material or closed with a cover.

Preferably, reinforcement elements projecting into the outer part are provided to absorb transverse forces, these reinforcement elements for absorbing transverse forces particularly preferably being fixed to the surface opposite the end face of the force introduction element on the outer part or to the inside of the end plate facing the outer part or to the legs of the U-profile forming steel plates, in particular with the outside of the steel plates forming the legs of the U-profile, are connected. According to the invention, reinforcement elements projecting into the structural part are provided to absorb transverse forces. According to these embodiments, the transverse forces transmitted through the sleeve can be transferred directly into the relative Reinforcement elements opposite the end face or end plate are introduced to absorb transverse forces.

A particularly advantageous introduction of the transverse forces into the outer part is possible if the reinforcement elements projecting into the outer part each wrap around a threaded sleeve to absorb transverse forces.

A particularly advantageous introduction of the transverse forces into the structural part is possible because, according to the invention, the reinforcement elements projecting into the structural part to absorb transverse forces each wrap around a threaded sleeve.

Brief description of the drawings

Fig. 1

in schematischer Darstellung einen vertikalen Schnitt durch eine Anordnung zum Verbinden eines Bauwerkteils mit einem dem Bauwerkteil vorgelagerten Außenteil;

Fig. 2

in schematischer Darstellung perspektivisch eine Hülse;

Fig. 3

in schematischer Darstellung perspektivisch eine nicht erfindungsgemäße Anordnung zum Verbinden eines Bauwerkteils mit einem dem Bauwerkteil vorgelagerten Außenteil ohne Isolierkörper;

Fig. 4

in schematischer Darstellung einen horizontalen Schnitt durch die Anordnung gemäß Figur 3 mit Isolierkörper;

Fig. 5

in schematischer Darstellung ein Langloch mit Längsachse;

Fig. 6

in schematischer Darstellung perspektivisch eine Gewindemuffe;

Fig. 7

in schematischer Darstellung einen horizontalen Schnitt durch eine Decken-/Bodenplatte eines Gebäudes und einen an die Decken-/Bodenplatte angeschlossenen Fertigteilbalkon.

The invention will be explained in more detail below using exemplary embodiments in connection with the drawings. Show it

Fig. 1

a schematic representation of a vertical section through an arrangement for connecting a building part with an outer part in front of the building part;

Fig. 2

in a schematic perspective perspective a sleeve;

Fig. 3

a schematic representation in perspective of an arrangement not according to the invention for connecting a building part with an outer part in front of the building part without an insulating body;

Fig. 4

in a schematic representation a horizontal section through the arrangement Figure 3 with insulating body;

Fig. 5

in a schematic representation an elongated hole with a longitudinal axis;

Fig. 6

in a schematic perspective perspective a threaded sleeve;

Fig. 7

A schematic representation of a horizontal section through a ceiling/floor slab of a building and a prefabricated balcony connected to the ceiling/floor slab.

Ways of carrying out the invention

The Figure 1 shows a schematic representation of a vertical section through an arrangement for connecting a reinforced concrete structural part B with an external part A in front of the reinforced concrete structural part B.

The arrangement comprises four force introduction elements K arranged in the structural part B. In the exemplary embodiment shown, the force introduction elements are threaded sleeves 6, one of which is in the Figure 6 is shown as an example. Each of the threaded sleeves 6 is firmly welded to a reinforcement element B3Z, B3D to absorb tensile or compressive forces.

The threaded sleeve 6 has an end face KS on its side facing away from the structural part B when installed (see Figure 6 ), whereby the end face KS of the threaded sleeve 6, when installed, is flush with the outside of the building part B facing the outer part A (see Figure 1 ). The reinforcement elements B3Z, B3D for absorbing tensile or compressive forces protrude into the structural part B. In the embodiment shown, a reinforcement element B3Q is also provided for absorbing transverse forces, which wraps around a threaded sleeve and protrudes into the structural part B.

The arrangement also includes an external steel installation part A1 arranged in the outer part A, the external steel installation part A1 having an end plate A2S and reinforcing elements A3Z, A3D, A3Q for absorbing tensile, compressive and transverse forces, the end plate A2S in installed state is flush with the outside of the outer part A facing the building part B and the reinforcement elements A3Z, A3D, A3Q protrude into the outer part A to absorb tensile, compressive and transverse forces.

The insulating body 4, which is arranged in the installed state between the structural part B and the upstream external part A, is in the Figure 1 Not shown. The arrangement of the insulating body 4 can be in accordance with the analogous representation of an alternative embodiment Figure 4 be removed.

In the Figure 1 One of the four connecting elements 5 penetrating the insulating body 4 in the installed state can be seen, the connecting elements 5 being designed in the form of threaded bolts. Each of the threaded bolts penetrates an elongated hole AL provided in the end plate A2S of the U-profile A2 of the steel installation part A1 on the outside part (see also Figure 5 ).

On the structural side, the connecting elements 5 are firmly connected to a force introduction element K when installed. In the exemplary embodiment shown, the threaded bolts 5 are screwed to the threaded sleeves 6. Since the threaded sleeves 6 are firmly welded to a reinforcement element B3Z, B3D to absorb tensile or compressive forces, when installed, the threaded bolts 5 are also firmly connected to the reinforcement elements B3Z, B3D to absorb tensile or compressive forces.

The threaded bolts 5 have an external thread throughout and therefore also in their sections protruding into the outer part A. When installed, a threaded nut is screwed onto each of these sections. The threaded nuts are in the Figure 1 not shown.

When installed, there is an in on each of the threaded bolts 5 Figure 2 threaded sleeve shown in detail. The exemplary embodiment shown is a cylindrical stainless steel sleeve with an inner diameter Ri of 23 mm and an outer diameter Ra of 50 mm. In the Figure 1 only one of the stainless steel sleeves 7 is shown. The stainless steel sleeve 7 is supported on the end plate A2S of the steel installation part A1 on the outside part and on the end face KS of the threaded sleeve 6 arranged in the structural part B.

After fastening the threaded nuts by screwing them with a predetermined tightening torque onto the external thread of the threaded bolt 5 in the section penetrating the end plate A2S of the steel installation part A1 on the outside part, the stainless steel sleeve 7 lies between the end plate A2S of the steel installation part A1 on the outside part and the end face KS of the in The threaded sleeve 6 arranged on the structural part B is clamped. The sleeve 7 then forms a non-slip connection between structural part B and outer part A, by means of which transverse forces can be transmitted.

The Figures 3 and 4 show schematically in perspective view ( Figure 3 ) and in horizontal section ( Figure 4 ) a non-inventive embodiment of an arrangement for connecting a building part B with an external part A in front of the building part B. In the exemplary embodiment shown, the building part B is a ceiling/floor slab of a building, while the external part A is a It is a prefabricated balcony that is subsequently connected to the building.

The arrangement includes a force introduction element arranged in the ceiling/floor plate B, which in the illustrated embodiment is designed in the form of a U-profile B2 made of steel plates. The end plate B2S, which forms the web of the U-profile B2, closes flush with the when installed The outside of the ceiling/floor plate B facing the prefabricated balcony A and thus forms the end face KS of the force introduction element K. The two steel plates B2C forming the legs of the U-profile protrude into the ceiling/floor plate B.

Reinforcement elements B3Z, B3D, B3Q are welded to the U-profile B2 to absorb tensile, compressive and transverse forces. The tension rods B3Z and the compression rods B3D are attached to the outside of the steel plates B2C forming the legs of the U-profile. The shear force elements B3Q are attached to the inside of the end plate B2S facing the ceiling/floor plate B. Four elongated holes BL are provided in the end plate B2S, the longitudinal axis of which (see Figure 5 ) runs in a vertical direction when installed.

In the illustrated embodiment, the arrangement also includes an external steel installation part A1 arranged in the prefabricated balcony, which includes a U-profile A2 made of steel plates. When installed, the end plate A2S, which forms the web of the U-profile A2, is flush with the outside of the prefabricated balcony A facing the ceiling/floor plate B. The two steel plates A2C forming the legs of the U-profile protrude into the prefabricated balcony A.

Reinforcement elements A3Z, A3D, A3Q are welded to the U-profile A2 to absorb tensile, compressive and transverse forces. The tension rods A3Z and the compression rods A3D are attached to the outside of the steel plates A2C forming the legs of the U-profile. The shear force elements A3Q are attached to the inside of the end plate A2S facing the prefabricated balcony A. Four elongated holes AL are provided in the front plate A2S, the longitudinal axis of which runs in a horizontal direction when installed.

The ones in the Figure 5 For clarification, the longitudinal axis L is shown as an example of the elongated holes BL provided in the end plate B2S of the U-profile B2 arranged in the ceiling/floor plate B and the longitudinal axis L of the elongated holes AL provided in the end plate A2S of the U-profile A2 of the steel installation part A1 on the outside part When installed, they are arranged at an angle of around 90° to each other. With the one in the Figures 3 and 4 In the illustrated embodiment, the elongated holes in the end plate B2S of the U-profile B2 arranged in the ceiling/floor plate B are arranged so that their longitudinal axis runs in the vertical direction when installed. The elongated holes in the end plate A2S of the U-profile A2 of the external steel installation part A1 arranged in the prefabricated balcony A are each arranged so that their longitudinal axis runs in a horizontal direction when installed. The described orientation of the elongated holes AL, BL makes it possible to adjust the position of the prefabricated balcony both in the vertical direction and in the horizontal direction when it is installed on the building.

From the Figure 4 It can be seen that an insulating body 4 is arranged between the building part B and the upstream outer part A, through which improved thermal insulation of the building is achieved.

The arrangement includes in the Figures 3 and 4 illustrated embodiment also has four threaded bolts 5, each of which forms a connecting element 5 that penetrates the insulating body 4 when installed. Like from the Figures 3 and 4 As can be seen, each of the threaded bolts penetrates both the elongated hole BL provided in the end plate B2S of the U-profile B2 and the elongated hole AL provided in the end plate A2S of the U-profile A2 of the steel installation part A1 on the outside part.

The threaded bolts 5 have an external thread over their entire extent, i.e. also in their sections protruding into the structural part B and in their sections protruding into the outer part A. When installed, threaded nuts are screwed onto the sections of the threaded bolts 5 projecting into the structural part B or onto the sections of the threaded bolts 5 projecting into the outer part A.

In the Figures 3 and 4 is also the one in Figure 2 Sleeve 7 shown in detail can be seen. The exemplary embodiment shown is a cylindrical stainless steel sleeve with an inner diameter Ri of 23 mm and an outer diameter Ra of 50 mm. When installed, this stainless steel sleeve 7 lies on a connecting element 5, in the exemplary embodiment shown Figures 3 and 4 threaded onto a threaded bolt and completely surrounds it. After fastening the threaded nuts by screwing them onto the external thread of the threaded bolt 5 in the sections penetrating the respective end plates A2S, B2S with a predetermined tightening torque, the stainless steel sleeve 7 is clamped between the end plates A2S, B2S. The stainless steel sleeve 7 then forms a non-slip connection between structural part B and outer part A, by means of which transverse forces can be transmitted.

The Figure 7 shows a schematic representation of a horizontal section through a ceiling/floor slab B of a building and a prefabricated balcony A connected to the ceiling/floor slab. In a real installation situation, the prefabricated balcony A is equipped with six steel installation parts A1 on the exterior part. Six force introduction elements K are concreted into the ceiling/floor slab B. In the exemplary embodiment shown, there are six force introduction elements K, each designed in the form of a U-profile made of steel plates, as used in connection with Figures 3 and 4 were explained. During the concreting process of the ceiling/floor slab as well as during the production of the prefabricated balcony, the interior space formed by the respective end plate and the two steel plates forming the legs of the U-profile are free of concrete using appropriate placeholders held. After removing the placeholders, this space is available for screwing the threaded nuts. After adjusting and fixing the prefabricated balcony, the interior of the U-profiles are cast with concrete or a resin or another suitable filling material or covered with a suitable cover.

Reference symbol list

A

Outdoor part

b

Building part

K

Force introduction element

KS

End face of the force introduction element

A1

Steel installation part on the outside

A2, B2

U-profile

A2C, B2C

Steel plates

A2S, B2S

face plate

A3D, B3D

Reinforcement elements to absorb compressive forces

A3Q, B3Q

Reinforcement elements to absorb shear forces

A3Z, B3Z

Reinforcement elements to absorb tensile forces

AL, BL

Long hole

4

insulating body

5

connecting element

6

Threaded socket

7

sleeve

L

Longitudinal axis

Ri

Inner diameter of the sleeve

Ra

Outer diameter of the sleeve

Claims (10)

1. Arrangement for connecting a structural part (B) to an exterior part (A) arranged in front of the structural part (B), wherein the arrangement comprises

   - at least one structural part-side force introduction element (K) that can be arranged in the structural part (B), wherein the structural part-side force introduction element (K) comprises an end face (KS) on its side facing away from the structural part (B) in the installed state, wherein the end face (KS) of the structural part-side force introduction element (K) is flush with the outside of the structural part (B) facing the exterior part (A) in the installed state,

   - at least one at the exterior part-side force introduction element that can be arranged in the exterior part (A), wherein the exterior part-side force introduction element has an end face on its side facing away from the exterior part (A) in the installed state, wherein the end face of the exterior part-side force introduction element is flush with the outside of the exterior part (A) facing the structural part (B) in the installed state,

   - at least one insulating body (4) that can be arranged in the installed state between the structural part (B) and the exterior part (A) in front,

   - at least one connecting element (5) penetrating the insulating body (4) in the installed state, wherein, in the installed state, the connecting element (5) is firmly connected to the structural part-side force introduction element (K) and firmly connected to the exterior part-side force introduction element,

   wherein, in the installed state, the connecting element (5) penetrates the exterior part-side force introduction element,

   wherein the connecting element (5) comprises an external thread in its portion projecting into the exterior part (A) and in its portion projecting into the structural part (B), wherein, in the installed state, at least one threaded nut is screwed onto the external thread arranged on the portion of the connecting element (5) projecting into the exterior part (A),

   - wherein at least one cylindrical sleeve (7) is provided which is supported on the end face of the exterior part-side force introduction element and on the end face (KS) of the structural part-side force introduction element (K) and which embraces the connecting element (5), wherein the sleeve (7), in the installed state after the at least one threaded nut has been fastened with a predetermined tightening torque, is clamped between the end face of the exterior part-side force introduction element and the end face (KS) of the structural part-side force introduction element (K),

   - wherein at least two connecting elements (5) and at least two sleeves (7) are provided,

   - wherein the connecting elements (5) are threaded bolts,

   - wherein the structural part-side force introduction element (K) is a threaded socket (6) and the threaded socket (6) is screwed to a connecting element (5) in the installed state,

   characterized in that

   the sleeves (7) are steel sleeves having an inner diameter (Ri) of between 20 mm and 30 mm and an outer diameter (Ra) of between 40 mm and 60 mm, and

   in that reinforcement elements (B3Q) for absorbing transverse forces projecting into the structural part (B) are provided, wherein the reinforcement elements (B3Q) for absorbing transverse forces projecting into the structural part (B) each wind around a threaded socket (6).
2. Arrangement according to claim 1, characterized in that

   the structural part-side force introduction element (K) is firmly connected to at least one reinforcement element (B3Z, B3D) for absorbing tensile or compressive forces and the at least one reinforcement element (B3Z, B3D) for absorbing tensile or compressive forces projects into the structural part (B),
   and/or

   in that the exterior part-side force introduction element is firmly connected to at least one reinforcement element (A3Z, A3D) for absorbing tensile or compressive forces and the at least one reinforcement element (A3Z, A3D) for absorbing tensile or compressive forces projects into the exterior part (A).
3. Arrangement according to claim 1 or 2, characterized in that the exterior part-side force introduction element is an exterior part-side U-profile (A2) consisting of steel plates, wherein the U-profile (A2) comprises an end plate (AS2) forming the web of the U-profile (A2) and at least two steel plates (A2C) forming the legs of the U-profile, wherein reinforcing elements (A3Z, A3D) for absorbing tensile and compressive forces are provided, which are firmly connected to the U-profile (A2), wherein in the installed state, the end plate (A2S) is flush with the outside of the exterior part (A) facing the structural part (B) thus forming the end face (KS) of the exterior part-side force introduction element (K), and the reinforcement elements (A3Z, A3D) for absorbing tensile and compressive forces project into the exterior part (A), wherein at least one aperture (AL) is provided in the end plate (A2S) and the connecting element (5) penetrates the aperture (AL) in the installed state, wherein the connecting element (5) comprises an external thread at least in its portion projecting into the exterior part (A), wherein in the installed state, a threaded nut is screwed onto the external thread arranged on the portion of the connecting element (5) projecting into the exterior part (A), wherein the reinforcement elements (A3Z, A3D) for absorbing tensile and compressive forces projecting into the exterior part (A) are preferably firmly connected to the steel plates (A2C) forming the legs of the U-profile, particularly preferably to the outside of the steel plates (A2C) forming the legs of the U-profile.
4. Arrangement according to claim 3, characterized in that the aperture (AL) provided in the exterior part-side end plate (A2S) of the U-profile (A2) is an elongated hole, wherein the elongated hole (AL) preferably comprises an expansion in the direction of its longitudinal axis (L) of 20 mm to 60 mm, particularly preferably of 25 mm to 50 mm, in particular preferably of 30 mm to 40 mm.
5. Arrangement according to any one of claims 1 to 4, characterized in that the exterior part-side force introduction element is a steel beam, in particular an I-steel beam, wherein the steel beam has an end plate, wherein the side of the end plate facing away from the steel beam forms the end face (KS) of the force introduction element.
6. Arrangement according to any one of claims 1 to 5, characterized in that the sleeves (7) are stainless steel sleeves.
7. Arrangement according to any one of claims 1 to 6, characterized in that at least four connecting elements (5) and at least four sleeves (7), preferably at least six connecting elements (5) and at least six sleeves (7), in particular preferably four connecting elements (5) and four sleeves (7), are provided.
8. Arrangement according to any one of claims 4 to 7, characterized in that the longitudinal axis (L) of the elongated hole (AL) provided in the end plate (A2S) of the exterior part-side U-profile (A2) is oriented in the horizontal direction or in the vertical direction in the installed state.
9. Arrangement according to any one of claims 1 to 8, characterized in that reinforcement elements (A3Q) for absorbing transverse forces projecting into the exterior part (A) are provided, wherein the reinforcement elements (A3Q) for absorbing transverse forces preferably are connected to the surface opposite the end face of the exterior part-side force introduction element or to the inner side of the end plate (A2S) facing the exterior part (A) or to the steel plates (A2C) forming the legs of the U-profile, in particular preferably to the outside of the steel plates (A2C) forming the legs of the U-profile, wherein the reinforcement elements (A3Q) for absorbing transverse forces projecting into the exterior part (A) preferably each wind around a threaded socket (6).
10. Arrangement according to any one of claims 1 to 9, characterized in that the cylindrical sleeve (7) comprises an inner diameter (Ri) of between 22 mm and 26 mm, in particular an inner diameter (Ri) of 23 mm,
    and/or
    in that the cylindrical sleeve (7) has an outer diameter (Ra) of between 45 mm and 55 mm, in particular an outer diameter (Ra) of 50 mm.

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