DE2019998A1 - Connection for precast concrete parts and manufacturing processes for this - Google Patents

Description

Connection for precast concrete parts and manufacturing processes for this The invention relates to a connection for precast concrete parts, in particular prefabricated panels, with eyelet-shaped holding parts embedded in the prefabricated parts. It will also an advantageous production process for such a connection is given.

There are many embodiments for connecting precast concrete parts known of connections. These are generally made by welding or by Overlapping of the steel inserts made. They are either in their making difficult to implement or costly and generally involve a through hole the side formwork of the precast concrete elements. For such connections it is also required that no parts of the insert or the connecting elements come off the surface of the connected precast concrete elements emerge, because they are carried out without post-processing Corrosion processes cause very annoying discolorations on outer wall surfaces.

The invention is based on the object of providing a connection for Precast concrete parts, in particular prefabricated slabs, to create that in simpler Way and with little assembly effort can be made and all Connecting parts within the space bounded by the outer surfaces of the prefabricated parts are to be accommodated. The characteristic of the invention is to be seen in the fact that the Loop-shaped holding parts arranged in an assigned position within a joint recess and are connected to a bracket, and that the joint recess one of the connecting parts has completely embedding filling. It can be useful that the Filling of the joint recess flush with the surfaces of the parts to be connected is.

With such a connection, an open joint is first created on the joint edge Joint recess formed in the eyelet-shaped holding of the two parts to be connected parts protrude. The joint recess can either be in the form of a transverse groove designed continuously or in the area of the loop-shaped retaining parts with additional Extension recesses be provided. The loop-shaped holding parts can be useful be anchored during the manufacturing process of the precast concrete parts by pouring. To connect the loop-shaped holding parts brackets are provided through the Pass through the eyelets and thereby establish a connection. Then the Joint recess filled with concrete or another pourable filler, so that the connecting parts are completely embedded. Through this shedding the connection becomes frictional.

In a particularly recommendable embodiment, the brackets are Helical or designed in the manner of a ring anchor. This results in a particularly simple assembly, and the desired strength can through a corresponding number of turns of the helical shaped bracket can be achieved.

In the simplest case, the loop-shaped holding parts of the two are Precast concrete parts to be connected opposite and are each connected with a bracket. However, it can be useful for certain applications, e.g. in expansion recesses the joint recess to arrange several loop-shaped retaining parts, which then together are connected with a bracket. This allows the connection to be certain preferred Adjust directions of loading.

It can also be advantageous that the embedded loop-shaped Holding parts are designed in such a way that they can be suspended from them, e.g. with the help of a Crane hook, can be done. This facilitates the necessary transportation.

In a recommendable embodiment, the joint recess have at least partially beveled side wall surfaces, these beveled side wall surfaces generally enclose an angle greater than 90 °. In some applications, however, a different inclination can also be used according to the given Dimensions to be appropriate.

When establishing the connection, it is advisable to proceed as follows: that the concrete parts to be connected are initially set against one another to form the joint recess and brackets are inserted into the respectively adjacent loop-shaped holding parts. Then the joint recess is filled with concrete so far that the eyelet-shaped Hold parts and the temples are fully embedded.

In the drawing is an embodiment of the subject matter of Invention shown schematically; 1 shows a section through a connection according to the invention, Fig. 2 is a plan view of a connection according to Fig. 1, at which the joint recess has not yet been cast.

As can be seen in Fig. 1, there are two concrete parts to be connected 1.2 loop-shaped holding parts 3.4 inserted, which are expediently in the form of a loop bent round rod are formed, with part of the bent section protrudes into a joint recess 6. In the two holding parts 3, 4 there is a helical shape designed bracket 5 inserted. The joint recess 6 is designed and symmetrical has two beveled side wall surfaces 7, 8 which are truncated with one another Make angles.

As explained in more detail in FIG. 2, the loop-shaped holding parts are located 3.4 in an expansion recess 9 of the joint recess 6, whereby the assembly when inserting the bracket 5 is facilitated. There is also enough space for the Access of a crane hook in the formation of the loop-shaped holding parts 3.4 as Hanging parts available. After inserting the helically shaped Bracket 5, the joint recess 6 is flush with the surfaces of the precast concrete parts 1.2 cast with concrete and thus made a force-fit. This creates a High strength connection with no excellent metallic connection parts cause the risk of discoloration due to corrosion processes.

Although the present connection for precast concrete parts of all kinds, in particular precast concrete slabs, the application may be also with other materials, for example plasterboard or plastic molded parts, take place.

Claims (8)

Expectations 1. Connection for precast concrete elements, in particular precast slabs, with eyelet-shaped retaining parts embedded in the prefabricated parts, d a d u r c h g e k e n n n z e i c h -n e t that the loop-shaped holding parts (3, 4) in associated Position arranged within a joint recess (6) and connected to a bracket (5) are, and that the joint recess (6) one of the connecting parts (3,4,5) completely Has embedding filling. 2. Connection for precast concrete according to claim 1, d a -d u r c h it is noted that the filling of the joint recess (6) with the surfaces the parts to be connected (1,2) is flush. 3. Connection for precast concrete according to claim 1 or 2, d a d u It is noted that the bracket (5) is designed in the shape of a helix is. 4. Connection for precast concrete according to claim 1 or 3, d a d u it is noted that the bracket (5) has more than two eyelet-shaped Holding parts (3, 4) connects, 5. connection for precast concrete according to claim 1, d a d u r c h e k e n n n z e i c h n e t, that the embedded eyelets Holding parts (3, 4) are auagebiidet as hanging parts. 6. Connection for precast concrete according to claim 1, d a -d u r ¢ h it is noted that the joint recess (6) at least in sections has beveled side wall surfaces (7,8). 7. Connection for precast concrete according to claim 1, d a -d u r c h it is not noted that the loop-shaped holding parts (3, 4) with the brackets (5) lie in expansion recesses (9) of the joint recess (6). 8. A method for producing a compound according to any one of the claims 1 to 7, d a d u r c h e k e n n n z e i c h -n e t that the precast concrete parts to be connected placed against each other to form the joint recess and into the adjacent ones Loop-shaped holding parts brackets are inserted, and that after inserting the bracket -The joint recess is filled with concrete so far that the eyelet-shaped holding parts and the temples are fully embedded. Blank page