DE19611253A1 - Post tensioning reinforcement for prefabricated concrete lintels - Google Patents

Abstract

The reinforcement is used on a prefabricated concrete lintel, and has a steel insert (2) which carries tensile loads in the lintel. The insert connects positively with two bearing brackets (1). The brackets may have openings in which the insert can be hung, in order to form the positive connection. The insert may be in the form of a perforated strap (4), which has hangers (5) at both ends, in order to shape-mate with the brackets when installed, and the central section of the lintel may be reinforced by one or more additional perforated straps (11). A steel bar for reinforcing concrete, or a ribbed bar, may also be used to form the hook-ended insert.

Description

The invention relates to precast reinforcement for the reinforcement of pre made lintels from concrete, in which a steel insert the occurring in the lintel Absorbs tensile loads.

In the known prefabricated lintels, this steel insert preferably consists of three or four ribbed steels, which are basketed over a zigzag-shaped connecting wire are well connected.

These basket-like steel inserts are available to the concrete plant in fixed lengths of e.g. B. delivered 8 meters and cut there to installation length. After part of this known precast reinforcement is that the manufacture of Transport, storage and cutting to the installation length are very difficult Lich and therefore expensive.

The object of the invention is to avoid these known disadvantages and one Finish reinforcement to reveal the manufacturing, transportation, the Storage and cutting to the installation length very easy and therefore is very inexpensive. In addition, should be practical when cutting to installation length no more waste. For this purpose, the invention by the in Characteristics mentioned main claim.

Further advantageous embodiments of the invention are from the subclaims evident.

In the drawings, an embodiment of the invention is shown schematically posed.

Show it:

Fig. 1 shows a built-in prefabricated lintel with a steel insert consisting of a perforated band in a front view

Fig. 2 shows a section of the steel insert, in view

Fig. 3 shows the finish lintel in section

Fig. 4 is a support tab in plan view.

The precast lintel reinforcement consists of two support brackets ( 1 ) and a steel insert ( 2 ). The steel insert ( 2 ) and the support brackets ( 1 ) are positively connected to one another.

The support brackets ( 1 ) have hanging openings ( 3 ) for the positive connection with the steel insert ( 2 ).

The steel insert ( 2 ) can, for. B. consist of a perforated tape ( 4 ), which has hooks ( 5 ) at both ends. In the installed state, the perforated band ( 4 ) is positively connected via this suspension bracket ( 5 ) to the support brackets ( 1 ).

However, the steel insert (2) can also consist of at least one rib rod (6) which also has at its two ends Yoke (5) and is connected positively to this suspension bracket (5) with the Auflagerkonsolen (1). In this case, the suspension openings ( 3 ) can be designed as bores.

The support brackets ( 1 ) can also be designed as support brackets ( 7 ). Support brackets ( 7 ) are preferably used when the lintels in the installed state are to be kept in a bearing joint ( 9 ) below the top edge ( 8 ) of the lintels.

With larger loads, it is also possible that the central part ( 10 ) of the lintel is reinforced by one or more additional perforated strips ( 11 ).

The additional perforated strips ( 11 ) can be connected via connecting elements with the perforated band ( 4 ) of the steel insert ( 2 ).

These connecting elements can be made of simple plugs ( 13 ) made of z. B. plastic.

An additional steel insert ( 15 ) can be arranged in the upper third of the concrete lintel ( 14 ) to absorb the tensile forces that occur during transport or improper storage of the finished lintel.

This additional steel insert ( 15 ) can also consist of a perforated band or a wire insert. However, since the loads to be absorbed are relatively low, this perforated band can consist of inexpensive steel band or a simple wire.

Since the steel inserts ( 2 ) and ( 15 ) consist in any case of a perforated band ( 4 ) or a simple rib steel ( 6 ), the transport, storage and processing are very simple and inexpensive. The simple possibility of specifically connecting one or more additional perforated strips ( 11 ) to the steel insert ( 2 ) in the event of greater loads also reduces the costs of the steel insert ( 2 ), because these additional perforated strips ( 11 ) only occur at places of greater load. can be used in the statically necessary number.

The steel insert ( 2 ) is arranged in the area of the middle part ( 10 ) in the lower third ( 16 ) of the concrete lintel ( 14 ).

The suspension bracket ( 5 ) can also protrude into the lower third ( 16 ) of the concrete lintel ( 14 ).

For this reason, no cracks can occur in the concrete lintel ( 14 ) - even in the event of improper transport or incorrect storage prior to installation on site.

Claims (12)

1. precast reinforcement for the reinforcement of prefabricated falls made of concrete, in which a steel insert absorbs the tensile loads occurring in the fall, characterized in that the precast reinforcement consists of two support brackets ( 1 ) and a steel insert ( 2 ) and that the steel insert ( 2 ) and the two support brackets ( 1 ) are positively connected to one another. 2. precast reinforcement according to claim 1, characterized in that the support brackets ( 1 ) have suspension openings ( 3 ) for the positive connection with the steel insert ( 2 ). 3. prefabricated lintel reinforcement according to claim 1 or 2, characterized in that the steel insert ( 2 ) consists of a perforated band ( 4 ) which has hanging brackets ( 5 ) at both ends and that the perforated band ( 4 ) in the installed state via this hanging bracket ( 5 ) is positively connected to the support brackets ( 1 ). 4. Reinforced lintel reinforcement according to claim 1 or 2, characterized in that the steel insert ( 2 ) consists of at least one rebar or a ribbed rod ( 6 ) which has hooks ( 5 ) at both ends and that the ribbed rod ( 6 ) in the installed state is connected to the support brackets in a form-fitting manner using these suspension brackets ( 5 ). 5. Reinforced lintel reinforcement according to at least one of claims 1 to 4, characterized in that the support brackets ( 1 ) are formed as support lugs ( 7 ). 6. Prefabricated lintel reinforcement according to claim 3, characterized in that the central part ( 10 ) of the prefabricated lintel is reinforced by one or more additional perforated strips ( 11 ). 7. precast reinforcement according to claim 6, characterized in that the additional perforated band ( 11 ) is connected via connecting elements with the perforated band ( 4 ) of the steel insert ( 2 ). 8. precast reinforcement according to claim 7, characterized in that the connecting elements are formed by plugs ( 13 ) which connect the additional perforated band ( 11 ) and the perforated band ( 4 ) of the steel insert ( 2 ). 9. prefabricated lintel with a prefabricated lintel reinforcement according to at least one of claims 1 to 8, characterized in that in the upper third of the concrete lintel ( 14 ) an additional steel insert ( 15 ) for receiving the tensile forces occurring during transport or improper storage of the prefabricated lintel is arranged. 10. prefabricated lintel according to claim 9, characterized in that the additional steel insert ( 15 ) consists of a perforated tape or a wire insert. 11. Prefabricated lintel according to at least one of claims 1 to 10, characterized in that the steel insert ( 2 ) in the lower third ( 16 ) of the concrete lintel ( 14 ) is arranged in the region of the central part ( 10 ). 12. prefabricated lintel according to at least one of claims 1 to 11, characterized in that the suspension bracket ( 5 ) also protrude into the lower third ( 16 ) of the concrete lintel ( 14 ).