WO2019219746A1

WO2019219746A1 - Prefabricated-part tank

Info

Publication number: WO2019219746A1
Application number: PCT/EP2019/062482
Authority: WO
Inventors: Harald Feldmann; Michael Stahl; Frank Bleuel
Original assignee: Drössler GmbH Umwelttechnik
Priority date: 2018-05-17
Filing date: 2019-05-15
Publication date: 2019-11-21
Also published as: EP3810870B1; EP3810870A1

Abstract

Prefabricated-part tanks such as fermenters should be developed in such a way that heights of the prefabricated-part tanks of greater than 15 m can be realized economically and very quickly. According to the present invention, an even number of precast-concrete wall elements standing on the foundation plate (1) is provided, half of the standing precast-concrete wall elements having only half the height (2) of the second half of the standing precast-concrete wall elements, at least one further precast-concrete wall element of full and/or half height stands on each of the precast-concrete wall elements standing on the foundation plate (1), the precast-concrete wall elements of half height (2) have at least two vertically spaced and horizontally arranged ducts (4), and the precast-concrete wall elements of the full height (3) have at least four vertically spaced and horizontally arranged ducts (5), the at least two or four ducts of adjacent precast-concrete wall elements of a prefabricated-part tank being arranged in identical planes and surrounding peripherally extending tensioning wires (6) in each plane.

Description

Prefabricated container

The invention relates to a precast container, which consists at least partially of rising on a foundation plate, between vertical joints forming precast concrete wall elements, each upstanding precast concrete wall element has at least two horizontally disposed cladding tubes, the ends of the ends of the cladding of further precast concrete wall elements to oppose, and wherein the cladding tubes accommodate tension strands, over which the precast container is biased.

Concrete tanks, which are used, for example, as fermenters, water reservoirs, chip silos or water towers, have long been manufactured from cast-in-situ concrete, with a slip circuit being used to obtain the desired fleas of the tank. Although large fleas of the container are feasible. However, these containers manufactured in Ortbeton construction are very cost-intensive and the Fierstellung is tedious.

For this reason, the generic prefabricated containers are already prepared in which standing on a foundation slab standing precast concrete wall elements together by horizontally arranged circumferential strands connected and placed under bias. The advantage of this prefabricated container is that the finished parts in a ready-mixed concrete plant can be made quickly, at any time under optimal conditions and at low cost, and can be spent if necessary to the particular site.

Spend the ready-mixed concrete wall elements to the appropriate site is done regularly by trucks, which usually first on move the normal road network. For this purpose, regulations concerning the length and width of the trucks and possibly also the height of the trucks must be taken into account. For this reason, ready-mixed concrete wall elements with a length, which later represents the height, can be regularly transported from 15 to a maximum of 18 m and widths of a maximum of 4 m, which are already special vehicles. Usually, the precast concrete wall elements are manufactured for good transport in height dimensions of 6 to 12 m and widths of up to 3 m.

This allows prefabricated containers at heights of only 6 to 12, a maximum of 18 m to build. If, for procedural reasons, greater heights of the containers are to be realized, they can hitherto only be costly and time-consuming to produce in situ-cast concrete construction.

By DE 10 2009 014 926 A1 prefabricated structures of greater height are already known in which the climbing construction method has been applied. These towers for wind turbines are pre-stressed vertically to absorb the corresponding forces. Internal pressure, as can occur with concrete containers such as fermenters, slurry tanks or water tanks, is not to be expected from these tower construction plants. Also on tightness must not be considered in these tower structures. That These structures can not be used as pre-fabricated containers.

The invention has for its object terzuentwickeln generic container such that heights greater than 15 m can be implemented inexpensively and very quickly and to show a mounting concept, which ensures the fast, cost-effective and safe construction of prefabricated containers.

To achieve the object, it is proposed that an even number of precast concrete wall elements standing on the foundation plate be provided, whereby at half of the upright precast concrete wall elements only half the height of the second half of the upright precast concrete wall elements has that on each of the standing on the foundation slab prefabricated concrete wall elements at least one further precast concrete wall element of whole and / or half height stands up that the precast concrete Wall elements half height at least two vertically spaced, horizontally disposed ducts and the precast concrete wall elements of the entire height at least four vertically spaced, horizontally arranged cladding tubes, said at least two or four Hüllroh re adjacent precast concrete wall elements of a precast container in are each arranged on the same levels, and in each level enclose circumferential clamping strands.

In principle, it is also possible to provide an odd number of prefabricated concrete wall elements standing on the foundation slab. In the area of the prefabricated concrete wall element heights, which then do not change, additional measures may be taken, for example, for a good grip of the wall. the Einbrin conditions not only of prefabricated concrete wall elements full height but also ready-mixed concrete wall elements half height and / or the provision of additional connecting means are planned.

The finished concrete wall elements whole height can z. B. easily transportable lengths of 10 m and widths of 3 m, while the prefabricated concrete wall elements half height only 5 m in length and 3 m wide and are also easy to transport. By placing the prefabricated concrete wall elements alternately in full length and half length results in gaps between the finished concrete wall elements full length, in which again the easily transportable and also easily tradable prefabricated concrete wall elements of full length can be used. This creates a climbing construction, with the heights of prefabricated containers greater than 15 or 18 m are readily possible, the precast concrete wall elements easily and without Special permit to transport and easy to handle on the spot because of their tradable size.

It has been proven that the tension strands are perpendicular to the respective abutting surface of the precast concrete wall elements from which they protrude.

This ensures that the clamping forces in the region of the joints are always introduced at right angles to the abutment surface in the wall elements, so that the abutment surfaces always optimally arranged to each other and can absorb the frictional forces particularly well and no sliding movements can nen arise.

It is advantageous if in the horizontal planes, in which the at least two or four cladding tubes are arranged, in each case a plurality of clamping strands receiving cladding tubes are provided.

As a result of the inner and outer clamping elements, a particularly high tendon density is made possible, which can be used in the case of high prefabricated containers, in particular in their lower area, for optimum preload adjustment.

It is significant that in the region of the horizontal joints between the prefabricated concrete wall elements is provided over substantially the entire length of the joints extending spring-groove connection. Alternatively, at least two horizontally spaced, arranged in recesses of the opposite precast concrete wall elements bolts may be provided in the region of each horizontal joint between the precast concrete wall elements. The spring-groove connection in the area of the horizontal joints but also the bolts prevent the mutually standing prefabricated concrete wall elements from moving unintentionally in the direction of the outside or inside of the container. The spring-groove connections also ensure better tightness of the container, since the connection area between the successive precast concrete wall elements and thus the sealing area increases and liquids z. B. would first have to be pressed upwards, in order then to escape on the outer wall can.

In order to achieve as uniform a construction of the walls as possible and a good impermeability of the joints or joints, it has been proven that both the vertical and the horizontal joints are grouted with injection mortar. In order to obtain even greater certainty, it is proposed that the tension strands arranged in cladding tubes are sheathed and the cladding tubes are grouted with injection mortar.

This results in a substantially uniform, and above all dense wall design of the precast container.

Such prefabricated containers can be formed in a round shape, polygonal shape or even oval.

Although this construction, unlike the previously known precast containers in addition to the vertical joints also Florizontalfugen, these precast container can be made waterproof. Contrary to expectations, unlike the high towers manufactured in climbing construction, no vertical tension strands need be provided for these high prefabricated containers. The necessary hold is achieved by its own weight, over-pushed joints and the offset of these joints. The following method of manufacturing the prefabricated containers according to the invention, in which, after the foundation plate has been set and set, a ring of erected precast concrete wall elements is arranged thereon, whereby prefabricated concrete wall elements of half length and prefabricated concrete elements are arranged. Alternate wall elements full length, continue to be fed into the at least two vertically spaced sheaths of precast concrete wall elements half height and communicating with these lower sheaths of finished concrete wall elements full height tension strands and the ends of Spannlit- zen connected tensioned, so that the Upstanding prefabricated concrete wall elements are held by the tension strands, supported against each other, and then full length prefabricated concrete wall elements are inserted into the gaps between the prefabricated concrete wall elements of entire length and secured by tension strands. This process of inserting Fertigbeton- wall elements full length in the ever-recurring gaps is repeated until the desired height of the precast container is reached. When the desired height of the precast container has been reached, prefabricated concrete half-height wall elements are inserted into the existing gaps between the precast concrete wall elements and secured by tension strands. Subsequently, both the vertical and horizontal joints and the ducts are filled with injection mortar. After the injection mortar has set, the prestressing strands are tensioned in such a way that the prefabricated part container has the desired pretension, whereby the pretension exceeds the expected internal pressure during regular use of the precast container.

The invention will be explained in more detail with reference to a drawing. Showing:

Figure 1 shows the simplified illustrated lower ring of an inventive

Prefabricated container, Figure 2 is a partial view of a container with indicated ducts and tension strands, and

Figure 3 two successively arranged precast concrete wall elements in side view and cut.

FIG. 1 shows, in perspective, a foundation plate 1 on which prefabricated wall elements half height 2 and precast concrete elements of entire height 3 alternate. Simplified here is a polygon of only eight elements shown. The precast container e.g. As a water storage, fermenter or slurry storage are usually made of 10 or more, preferably an even number forming prefabricated concrete wall elements nen can also have a curvature nen, so that round container can be realized.

Figure 2 shows a section of a precast container according to the invention. Here, prefabricated concrete wall elements half height 2 and full height 3 are alternately arranged on the foundation plate. In the gaps between the finished concrete wall elements full height 3 turn finished concrete wall elements full height 3 are used.

2, the at least two sheaths 4 of the prefabricated concrete wall elements half height 2 and the at least four sheaths 5 of the prefabricated concrete wall elements of entire height 3 are also indicated. In the ducts 4 and 5, the tension strands 6 are indicated.

The illustrated vertical joints 7 and horizontal joints 8 and the ducts 4 and 5 are filled with injection mortar, so that a uniform wall 9 results, which also in their interior in the region of the ducts 4 and 5 have no voids. FIG. 3 shows, in side view and cut away, two prefabricated concrete wall elements of entire fleas 3 in the region of their horizontal joint 8. Furthermore, the sheaths 5 can be seen, in which the tension strands 6 are arranged. Both the horizontal joint 8 and the cladding tubes 5 are filled with injection mortar.

LIST OF REFERENCE NUMBERS

1 foundation plate

2 prefabricated concrete wall element half fleas

3 Prefabricated concrete wall element of whole fleas

4 tube

5 tube

6 tension strands

7 Vertical joint

8 Florizontal joint

9 wall

Claims

claims

1. Prefabricated container of at least partially on a foundation plate (1) upstanding between vertical joints (7) forming precast concrete wall elements, each upright precast concrete wall element at least two horizontally disposed cladding tubes (5), the ends of the ends of the ducts ( 5) of the further precast concrete wall elements, and wherein the cladding tubes (5) receive tensioning strands (6), over which the precast container is prestressed,

characterized,

a preferably even number of prefabricated concrete wall elements resting on the foundation slab (1), one half of the raised precast concrete wall elements having only half the fleas (2) of the second half of the raised precast concrete wall elements,

in that at least one further precast concrete wall element of whole (3) and / or half fleas (2) rests on each of the precast concrete wall elements resting on the foundation plate (1),

the prefabricated concrete wall elements of half fleas (2) have at least two vertically spaced, horizontally arranged cladding tubes (4) and the finished concrete wall elements of the entire fleas (3) at least four vertically spaced, horizontally arranged cladding tubes (5),

wherein the at least two or four sheaths of adjacent prefabricated concrete wall elements of a precast container are arranged in each case in the same planes and enclose in each plane each circumferential tension strands (6).

2. Prefabricated container according to claim 1 characterized,

that the tensioning strands (6) are perpendicular to the respective vertical abutment surface of the precast concrete wall elements from which they protrude.

3. precast container according to claim 1 or 2,

characterized,

that in the horizontal planes in which the at least two or four sheath tubes are arranged, in each case a plurality of hulls (5, 5 ') which receive tension strands (6) can be provided.

4. precast container according to one of claims 1 to 3,

characterized,

that in the region of the horizontal joints (8) between the prefabricated concrete wall elements is provided a substantially over the entire length of the abutment parts extending spring-groove connection.

5. precast container according to one of claims 1 to 3,

characterized,

that in the region of each horizontal joint between the precast concrete wall elements at least two horizontally spaced, in respective recesses of the opposing precast concrete wall elements arranged bolts are provided.

6. Prefabricated container according to one of claims 1 to 5,

characterized,

that both vertical and horizontal joints are grouted with injection mortar.

7. Prefabricated container according to one of claims 1 to 6 characterized,

that in the cladding tubes (4, 5) arranged tension strands (6) are sheathed, and the cladding tubes (4, 5) are pressed with injection mortar.

8. Prefabricated container according to one of claims 1 to 7,

characterized,

that the precast container is round or polygonal or oval.

9. A method for producing prefabricated containers according to one of claims 1 to 8,

characterized,

that after the creation and setting of a foundation slab (1) on this a ring of upright precast concrete wall elements is arranged, with prefabricated concrete wall elements half height (2) and finished concrete wall elements of full height (3) alternate,

that in the at least two vertically spaced sheaths (4) of the prefabricated concrete wall elements half height (2) and communicating with these lower sheaths (5) of the finished concrete wall elements of full height (3) Spannlit- zen (6) retracted and the ends of the tensioning strands (6) are connected to one another in a tensionable manner so that the upright precast concrete wall elements are held by the tension strands (6) and bear against one another,

that in the gaps between the finished concrete wall elements of full height (3) now finished concrete wall elements of full height (3) are used and secured by tension strands (6),

that this process of inserting finished concrete wall elements of full height (3) is repeated in the ever-recurring gaps until the desired height of the precast container is reached,

that when the desired height of the precast container is reached, it will fill in the existing gaps between the full height precast concrete wall elements (3) Used prefabricated concrete wall elements half height (2) and in turn these are secured by tension strands (6),

that subsequently both the vertical and horizontal joints and the ducts (4, 5) are filled with injection mortar,

and that, after setting of the injection mortar, the tensioning strands (6) are clamped such that the prefabricated part container has the desired pretension, wherein the pretension exceeds the expected internal pressure when the precast container is used.