DE4314576A1 - Sheet-steel shuttering for leaning walls - Google Patents

Abstract

Sheet-steel shuttering for leaning walls (also as second shuttering skin). Solves the problems of high-outlay preliminary and follow-up work on the old shuttering system. A quite normal wall shuttering is produced from a leaning wall. The storage of the sheet steel is also very small-scale. The sheet-steel shuttering for leaning walls may also be used for other shuttering work, and the use of the sheet-steel shuttering is virtually unlimited. The sheet-steel shuttering has been tried out on a building site, and everything functioned with a success rate of 100%.

Description

The invention of the steel sheet ( Fig. 1) moves in the technical field of large-area formwork. In the known prior art with large-area formwork for back walls, the procedure is as follows:

• a) Before the sole, ceiling, etc. is concreted, you have to anchor the back walls there install.
• b) Then the existing wall (back wall) with the expansion joint (Poresta or similar) busy.
• c) Now the back wall is reinforced.
• d) The large-area formwork is placed in front of the iron.
• e) A stable steel angle is placed in front of the large-area formwork, and with the formwork, as well attached to the anchor.

The shortcomings of this approach are as follows:

• a) The main problem is that when concreting the concrete break through the existing wall can.
• b) When working with the existing technology, the amount of work and the costs are very high high (due to the anchoring and the stable steel angles).

The problem with a back wall is that there is too little distance from the old wall to the new one Wall, this means that you can not put a second formlining.

The technical problem arises: How do you make a whole out of an armored wall formwork? normal wall formwork?

The solution to the problem is sheet steel formwork ( Fig. 1).

The steel sheet ( Fig. 1) is to be made according to the dimensions ( 2 , 3 ) of the large-area formwork.

Since the steel sheet ( Fig. 1) can only be transported with a lifting device, transport eyes ( 1 ) must be drilled on the top. The thickness of the sheet ( 4 ) should be selected according to static requirements. Quick-thread nuts ( 6 ) are to be welded onto the back of the steel sheet ( Fig. 1) so that the steel sheet ( Fig. 1) can be connected to the large-area formwork with quick-threaded rods ( 7 ). The quick thread rods ( 7 ) are to be screwed through the holes ( 5 ) in the steel sheet ( Fig. 1) with the quick thread nut ( 6 ). Since the walls do not always have the right length for the formwork, an additional sheet ( Fig. 2) must be made.

The example of the use of the supplementary plate ( FIG. 3) shows how the supplementary plate ( FIG. 2) can be used.

It is important to ensure that the quick-threaded rod ( 7 ) is pushed through a plastic tube sleeve ( 8 ).

With the tubular sleeve (8), the wall thickness is adjusted and can be easily intercepted during stripping the quick threaded rod (7) and remove. At the Fig. 4, it can accurately recognize the use of the steel sheet (Fig. 1).

The expansion joint material is attached to the existing wall. Then the steel sheet ( Fig. 1) is set up and fastened. The wall is now reinforced. After the reinforcement, the large-area formwork is placed in front of the reinforcement. Now fasten the large-area formwork with the steel sheet ( Fig. 1) with the quick-thread rod ( 7 ). The wall is now leveled and stiffened.

Once this work has been carried out, concrete can be poured in one go.

The invention of the steel sheet ( Fig. 1) has considerable advantages over the existing technology:

• a) A back wall becomes a completely normal wall.
• b) The elaborate anchoring and the stable iron angle are eliminated.
• c) When concreting, you don't have to be afraid that the concrete will break through the old wall.
• d) The concrete can be poured quickly.
• e) The space for storing the steel sheet ( Fig. 1) is very small.
• f) The use of the steel sheet ( Fig. 1) is also possible with other formwork processes.

Fig. 5 use of the steel sheet (Fig. 1) for a normal wall peeled,

Fig. 6 it is a detail of Fig. 5. Here you can see that a quick threading stage ( 7 ) does not have to be passed through each hole ( 5 ) in the steel sheet ( Fig. 1). Remaining holes are grafted. The work of shuttering is accelerated by the few tensions,

Fig. 6 foundation formwork with two steel sheets (Fig. 1),

Fig. 7 foundation formwork with a steel sheet ( Fig. 1) and completely normal formwork.

• g) The durability and thus the use of the steel sheet ( Fig. 1) is almost unlimited. At most the holes ( 5 ) have to be changed.

Fig. 1 sheet steel formwork for Lehnwände (and also as a second formwork skin),

Fig. 2 Supplementary sheet,

Fig. 3 example of the use of the supplementary sheet,

FIG. 4, for a Lehnwandschalung with sheet steel,

Fig. 5 example of a formwork with sheet steel, and for a large capacity formwork,

Fig. 6 for details Fig. 5,

Fig. 7, for a foundation formwork with two metal sheets,

Fig. 8 Example of a foundation formwork with sheet steel and a normal formwork method.

Reference list

1 eyebolts
2 width of the sheet
3 length of the sheet (also height)
4 thickness of the sheet
5 holes for connection to the large-area formwork
6 quick thread nut
7 quick-threaded rod for connection to the large-area formwork
8 plastic tube sleeve as a wall spacer, so that the quick-threaded rod is kept free of the concrete.

Claims (1)

Sheet steel formwork for back walls (also as second skin formwork). With the known Formwork technology makes an armored wall formwork complex and not very variable poses. The sheet steel formwork for back walls enables a quick Processing as well as durability of the formwork, and this therefore provides a Cost reduction.