EP2686497A1

EP2686497A1 - Wall module for building a structure and associated structure

Info

Publication number: EP2686497A1
Application number: EP12709283.1A
Authority: EP
Inventors: Anna GALLINAT; Nikolaos CHRISTOFORDIS
Original assignee: Areva GmbH
Current assignee: Areva GmbH
Priority date: 2011-03-16
Filing date: 2012-02-28
Publication date: 2014-01-22
Anticipated expiration: 2032-02-28
Also published as: RU2615538C2; TWI551754B; RU2013146018A; AR085418A1; KR20140018924A; KR102043979B1; EP2686497B1; JP5985519B2; HUE025855T2; CN103459732A; TW201243133A; CN103459732B; US20140013699A1; PL2686497T3; WO2012123067A1; WO2012123067A8; JP2014511950A

Abstract

A wall module (2) which is designed as a concrete prefabricated building element for building a structure and which can easily be assembled and connected to further such wall modules (2) to form a structure should be designed not only for usual operating loads but additionally also to withstand improbable extreme loads. To that end, the wall module (2) has a wall body (8) having a regular base area and multiple edges, with a plurality of reinforcement rods (10) which all together form a regular reinforcement grid, and which preferably each extend parallel to the edges, and which are cast into the wall body (8), the reinforcement rods (10) each penetrating the wall body (8) substantially from edge to edge, and being provided at their ends with connecting elements (6) which are designed to establish a connection with complementary connecting elements (6) of an immediately adjacent wall element (2), and each connecting element (6) being connected with clearance to the associated reinforcement rod (10) such that it can be moved in a plane which is perpendicular to the longitudinal direction of the reinforcement rod (10) on all sides by at least 2 mm with respect to a provided central position.

Description

description

Wall module for the construction of a building and associated building

The invention relates to a trained as a precast concrete wall module for the construction of a building. It further relates to a building produced using such wall modules, in particular an operating or plant building of a nuclear power plant.

Safety-related buildings of nuclear facilities, such as those buildings that house the emergency generators, have so far been almost exclusively designed as a local concrete construction. The prefabricated construction tried and tested in ordinary residential construction has so far practically not been used.

The high safety requirements and the consideration of the load cases EVI - influence of internal and external EVA - for nuclear plants usually result in a very high rebar density. For this reason, most of the building structures of nuclear power plants or other nuclear facilities are constructed in solid construction. In this construction, the minimum wall thickness was due to the high reinforcement amounts so far at about 0.85 m.

The building / construction must withstand all loads and load connections of the following events of categories H1 - H4:

Normal operation (H1):

- Permanent loads

- Variable loads including loads due to transport and installation

- Combined loads

Influences of Person-related Events (H2):

- explosion

- crashes of flying machines

- Fire in the outdoor area Influences due to internal unforeseen events (H3):

- Internal fire

- collapse of the inner design

- Falling loads

- Internal flooding

- Internal explosion

Unlikely events (H4):

- Earthquake

- Extreme winds

- Extreme snow and icing

- Tornadolasten, influence of Tornado-Geschossen

- Extreme outside temperatures

- External flooding

- extreme precipitation

- Property protection

- Explosive pressure wave

- Explosive gas cloud

The use of prefabricated components - although considered to be quite desirable because of the associated standardization and the optimization of the entire planning, construction and construction processes - encountered considerable difficulties in this context and was therefore omitted. This is due, in particular, to the joining techniques commonly used in prefabrication, which either do not meet the requirements set out in the nuclear sector or are unable to overcome the permissible component tolerances which are generally encountered.

The fact that essentially the same buildings, with the same functionality, are planned for each nuclear power plant, leads to the consideration of how the planning and execution costs can be reduced.

A reduction is possible by means of systems which make it possible to flexibly plan the desired rooms and their occupancy with prefabricated modules. The requirements placed on the structures in the nuclear power plant area meet the highest requirements in construction and safety engineering. The planning and execution is therefore very complicated and expensive.

The introduction of prefabricated construction previously encountered difficulties with respect to the frictional connection between the individual components and the overcoming of the associated tolerances and dimensional inaccuracies as well as inaccuracies in the alignment during assembly.

The invention is therefore an object of the invention to provide a wall module of the type mentioned, which can be combined easily with other such wall modules to a building, especially a building or complex of buildings, and connect, which is designed not only for ordinary operating loads, but In addition, unlikely extreme loads - individually or even in combination - withstand, for example, flooding, earthquakes, continuous rain, ice loads, wind loads, hurricanes, extreme ambient temperatures, impact of projectiles, aircraft crashes, etc.

This object is achieved according to the invention by the features of independent claim 1.

Accordingly, a designed as a precast concrete wall module for the construction of a structure with a regular, in particular rectangular base and a plurality, in particular four edges having wall body provided with a plurality of in their entirety a regular reinforcing grid forming, preferably each parallel to the edges extending reinforcing bars, which are cast in the wall body, wherein the reinforcing bars penetrate the wall body in each case substantially from edge to edge and are provided at their ends with connecting elements which are designed for establishing a connection with complementary connecting elements of an immediately adjacent transition element, and wherein the respective connecting element - in any case in the dissolved, not connected to a complementary connection element state - is so playful or movably connected to the associated reinforcing rod that it in a direction perpendicular to the longitudinal direction of the reinforcing bar level on all sides by at least 2 millimeters relative to a planned central position is displaceable. In the strained, firmly connected state, this mobility can be completely prevented.

It is particularly advantageous and sufficient for customary requirements in nuclear power plant construction if it is possible to ensure displaceability of at least 5 millimeters, preferably up to approximately 10 millimeters.

The term wall module is here interpreted broadly and includes in addition to inner and outer wall sections (side walls) of a building in particular also floor and ceiling panels.

Flat, flat wall modules, in particular with a rectangular base, although preferred - but the wall modules can also be curved so that, for example, the construction of a curved wall section or a cylindrical building (reactor building, etc.) is possible.

As has surprisingly been found in this way not only a flexible connection between the individual modules is formed, which makes it possible to bridge unavoidable component tolerances and alignment tolerances in the on-site installation, but it can be with appropriate dimensioning in spite of - or Also realize just because of - comparatively high flexibility of the individual connections heavy-duty composites of wall modules that withstand high shear forces and bending moments and ensure reliable load transfer across the module boundaries away into the respective anchoring points.

It is expedient if the connecting elements - at least primarily - for a non-positive connection with each other, in particular by screwing or bracing, are designed. Optionally, in addition, a positive connection may be provided, in particular for securing previously prepared screw. In a preferred embodiment, in each case at least two parallel reinforcing rods are combined to form a unit and connected at the end to the same connecting element.

As already indicated above, the respective wall module can be part of a side wall or a top wall or base plate, that is, it is aligned either vertically or horizontally. Accordingly, both vertical and horizontal reinforcing bars with vertical or horizontal connecting elements connected thereto are provided in the installed or installed state in order to connect both side wall modules with one another and with ceiling wall modules with one another and with one another.

In an advantageous embodiment, a wall module is provided in the mounting state horizontally extending reinforcing bars fixedly connected to the end having at least one support plate support member, in particular welded, wherein the respective support plate is embraced by a U-shaped saddle element with a base plate and two leg plates, and wherein the leg plates in turn firmly connected to an associated horizontal connecting element, in particular welded. The saddle element is preferably made in one piece.

In this case, in the assembled state, the saddle element expediently rests with its base surface on an end face of the holding plate and is dimensioned in particular with regard to the distance between the leg plates in such a way that the abovementioned flexible seat is realized. That is, the required flexibility of the connection is preferably realized in this variant by the displaceability of the saddle element relative to the holding plate.

In a preferred variant, the respective support element consists of a single block-shaped holding plate, which is firmly connected to a total of two reinforcing bars, in particular welded.

In an alternative variant, the respective support element comprises two parallelepiped retaining plates, which are connected to one another via two cuboid transverse plates, wherein the support element with four associated reinforcing bars firmly connected, in particular welded, and wherein each of the two holding plates is encompassed by a connected to a horizontal connecting element saddle element. In this variant, a connection unit located in the wall module therefore comprises a total of four parallel reinforcing rods which are each provided at the end with a connection unit having two connecting elements.

The frame-like support element in this variant can also be made in one piece in a preferred embodiment.

In a particularly preferred embodiment, the respective horizontal connecting element in the female version comprises a sleeve provided with an internal thread and complementary male version with an externally threaded threaded bolt with associated lock nut, wherein the male connecting element and the female connecting element in the connected state, preferably in the manner of a turnbuckle interact.

In this case, the respective bush is expediently screwed to the end facing the support element on a threaded bolt, which is provided for attachment to the saddle element.

Furthermore, a construction is premature, in which the leg plates of the respective saddle element are aligned parallel to the horizontally extending reinforcing bars and parallel extending receiving slots, which are delimited by slot edges, wherein the respective threaded bolt of the associated connecting element along the receiving slots pressed between the leg plates and in the Area of the slot edges firmly connected to the leg plates, in particular welded.

The variants described so far are particularly suitable for horizontal reinforcing bars and horizontal connections. Variants that are particularly suitable for vertical connections are described below. In an advantageous embodiment, a wall module is provided in which in the assembled state vertically extending reinforcing bars fixedly connected to the end of a support member, in particular welded, which has a recess for performing an externally threaded tappet, in conjunction with two unscrewed anchor nuts and possibly existing Engaged by the threaded bolt anchor plates is effective as a vertical connection element.

The above-specified flexibility of the vertical connections is expediently achieved in that the threaded bolt has a slightly smaller diameter than the surrounding seat, which is realized in particular by an associated recess in the support member or by a corresponding recess in an anchor plate.

It is expedient if the respective support element comprises four parallelepiped-shaped frame plates connected in the manner of a rectangular frame, two frame plates lying opposite each other being designed as holding plates and firmly connected, in particular welded, to a reinforcing bar. A vertical connection unit in the wall module thus preferably has two reinforcing bars.

For all variants described so far an embodiment of the wall module is advantageous in which the wall body has a shell, an inner shell and an intermediate core filling in the manner of a sandwich construction, wherein the outer shell and the inner shell via reinforcing elements, in addition to the reinforcing bars of the connection units further elements may be sheared together.

A building, which is composed of a plurality of interconnected via the flexible connecting elements wall modules of the type mentioned, meets the requirements mentioned above in an excellent manner. Conveniently, existing in the construction of the building between the wall modules joints and possibly existing in the region of the connecting elements recesses in the respective wall body shed with concrete.

The previously presented and explained system with prefabricated modules / wall profiles in element wall construction has a very high flexibility and at the same time brings the standardization and optimization of the entire design, planning and construction process with it.

The system can be applied to all buildings which, due to their function in the installations, must withstand the external and internal events mentioned. This means that the system is not only applicable to nuclear power plants, but it can also be used in chemical, military and other fields.

The element connections are designed so that the specified reinforcement values are to be transferred in the form of a full thrust (100% power transmission). Each reinforcing rod is connected to the reinforcement of the follow-up component in such a design, regardless of whether the possible strength is achieved.

Although various types of wall panel connectors, also referred to as wall modules in the previous description, which superbly meet the requirements set forth, there is a need for other types and variations of the existing types to accommodate the various requirement cases to provide flexible detail solutions. In this case, in particular in the design and the material requirements her simple, cost-effective connector or connector systems sought, which can be easily and reliably connected to the reinforcement of the wall elements and connect to each other.

For this purpose, a connector system for a prefabricated construction with a plurality of wall modules can be provided, wherein the connector system comprises one or more components from the following group: • a U-beam or a box in the joint between two

Wall modules is arranged, and with which the reinforcing rods (10) are screwed,

• a U-beam or a box in the joint between two

Wall modules is arranged, and in which engage the reinforcing bars by means of screwed metal claws form fit,

A composite of two tie plates or boxes connected together by bolts, each end plate or box being bolted to one of the reinforcing bars,

• a double-headed anchor.

The prefabricated building element system according to the invention has, in an advantageous variant, a wall thickness of only 0.40 m and an optional facing shell with a thickness of about 0.10 m. Thus all loads and load connections described above are reliably absorbed.

The advantages achieved by the invention are in particular that, by providing a "modular system" with prefabricated, standardized wall modules or wall profiles, which are provided with high-quality and flexible connections or connections, which have always been known from the conventional prefabrication advantages in terms But of course, the invention is not limited to such applications, but can, for example, for non-nuclear industrial plants, military plant or even for ordinary buildings, such as in strong earthquake-prone areas

Various embodiments of the invention are explained below with reference to drawings. In each case show in a highly simplified and schematic representation:

FIG. 1 is a partially cutaway perspective view of a building section composed of a plurality of prefabricated wall modules at the time of assembly (FIG. PURE: just before pushing together and connecting the

Wall modules), a plan view (front view) of the building section of FIG. 1, a detail from the central area of FIG. 2 with enlarged selected connecting elements between the wall modules, the detail of FIG. 3 in perspective view, a to FIG. 4 shows an alternative type of horizontal connecting units and the concrete casing of the wall modules in the drawing has been omitted, a first type of horizontal connecting unit, a second type of horizontal connecting unit, a vertical connecting unit, simplified construction drawings for various ones Components of the connection unit according to FIG. 6, simplified design drawings for various components of the connection unit according to FIG. 7, and

FIG. 11 simplified design drawings for different

Components of the connection unit according to FIG. 8th. FIG. 12 one of several wall modules in prefabricated construction

composite wall section of a building,

FIG. 13 and 14 a connector system for wall modules according to a first embodiment (U-beam),

FIG. 15 to 18 a connector system for wall modules according to a second

Embodiment (box),

FIG. 19 to 25 show a connector system for wall modules according to a third embodiment (terminator),

FIG. 26 and 27 show a connector system for wall modules according to a fourth

Embodiment (Claw I),

FIG. 28 and 29 show a connector system for wall modules according to a fifth

Embodiment (claw II), and

FIG. 30 shows a connector system for wall modules according to a sixth

Embodiment (double-headed anchor).

The same or equivalent parts are provided in all figures with the same reference numerals.

The wall modules 2 according to the present invention are designed as prefabricated concrete components with connecting units 4 partially cast in the concrete, wherein connecting elements 6 project outwardly from the respective wall body 8 for connection to complementary connecting elements 6 of corresponding neighboring modules.

A first type of horizontal connection unit 4 is shown in FIG. 6 shown in perspective. The connection unit 4 comprises two parallel, equal length reinforcing bars 10, which at their respective ends with the end faces of a parallelepiped mige retaining plate 12 are welded. The respective holding plate 12 is encompassed by a U-shaped saddle element 14, which has a base plate 16 and two leg plates 18. The respective saddle element 14 is preferably made in one piece (here, however, a composite of several parts variant is shown) and aligned such that the leg plates 18 to some extent form an extension of the reinforcing bars 10 to the outside, which in turn outwardly in the form of a parallel to the Reinforcing bars 10 aligned connecting element 6 continues. The respective connecting element 6 comprises an externally threaded threaded bolt 20 which engages at its inner end between receiving slots 22 of the two associated leg plates 18 and is welded to the slot edges 24 with the leg plates 18. The outer end of the respective threaded bolt 20 is provided either in a female version with an internally threaded bush 26 or male version with a lock nut 28 so that between complementary connecting elements 6 adjacent wall modules 2, a corresponding non-positive connection in the manner of a turnbuckle connection can be produced ,

By appropriate dimensioning of the components, in particular the length and width of the base plate 16 of the respective saddle element 14 in relation to the length and width of the holding plate 12 of the gripped by the saddle member 14 retaining plate 12 is a certain lateral displacement of the seat member 14 and thus also of the associated connecting element. 6 relative to the firmly embedded in the wall body 8 of the wall module 2 reinforcing bars 10 ensures, in particular by at least 2 millimeters, preferably at least 5 millimeters in any direction perpendicular to the longitudinal direction of the reinforcing bars 10. The substantially cuboid wall body 8 is in the region of the respective saddle element 14 with a provided corresponding recess, so that the displacement is actually given. In this way, if necessary, unavoidable component tolerances can be compensated during the manufacture or during the tensioning of the connections.

The in FIG. As regards the mode of operation, the second type of horizontal connecting unit 4 illustrated in FIG. 7 is constructed in an analog fashion, but has twice the number of connecting elements 6 and reinforcing bars 10. It is therefore on everyone Side two mutually parallel, each encompassed by a saddle element 14 with associated connecting element 6 holding plates 12 are provided, wherein the holding plates 12 are connected to each other via transverse plates 30. The frame formed from holding plates 12 and transverse plates 30 may be made in one piece. The reinforcing bars 10 are welded to the end faces of the holding plates 12, alternatively to the transverse plates 30. In this way, on each side of the connection unit 4, as it were, a double turnbuckle connection can be realized, which has the flexibility described above.

FIG. FIG. 8 shows a vertical connection unit 4 with a fundamentally similar operating principle, but with a different construction of the connecting elements 6 in detail. The two reinforcing rods 10 are here namely welded to a rectangular frame formed of four frame plates 32 at the end. At the reinforcing bars 10 facing inside of the rectangular frame a provided with a central recess 34 anchor plate 36 is welded to the frame plates 32. The diameter of the recess 34 is dimensioned such that a threaded bolt 38, which is also referred to as an anchor bolt, can be pushed through with a certain clearance, that is to say with the formation of an annular gap. An anchor nut 40 serves to consolidate and fix a connection produced with a counterpart of an adjacent wall module 2, which is likewise fixed there by means of a corresponding anchor plate 36 which is penetrated by the threaded bolt 38. A differentiation according to male and female connection type is not absolutely necessary, but can of course be provided in an alternative embodiment. Alternatively, clamping bushes or the like can again be used here in order to connect the opposing ends of threaded bolts 38 of adjacent wall modules 2 to one another.

It is again important that the vertical connection, just like the horizontal connection, allows a certain flexibility perpendicular to the longitudinal direction of the reinforcing bars 10 of at least 2 millimeters, preferably at least 5 millimeters adjustment margin. In all cases shear, tensile and shear loads are reliably removed and forwarded over the total in the manner of a regular, rectangular grid cast in the concrete of the wall body 8 reinforcing rods 10.

All components and components that are composed in the figures of individual components welded together (welds 42), in an alternative embodiment can also be made in one piece, such as cast or produced by cold or hot forming.

The types of connectors described below may be substituted for those shown in FIGS. 1-11 shown and described connector - there called "fasteners" - occur and replace them partially or completely or combined or interact with them in a variety of ways.

In FIGS. 12 to 30, several embodiments of connector systems according to the invention for wall modules in reinforced concrete prefabricated design will be explained in more detail with reference to drawings.

For all the following examples applies: The building is designed as a solid construction of prefabricated elements or prefabricated modules made of reinforced concrete in the form of wall, ceiling, corner elements and the like, hereinafter briefly summarized by the term "wall module", the term " Wall element "is used synonymously. The connections between the prefabricated elements are made with special connectors or connector systems based on

Overcome screw connections. The prefabricated wall modules can be combined almost anywhere.

The screw connections meet the requirements for cyclic alternating stresses under seismic action or comparable natural events as well as for extraordinary loads, eg. B. explosions or impact loads.

A wall section composed of three similar rectangular wall modules 2 is shown by way of example in FIG. 12 shown in perspective. 1. Screw connection type U-beam

Between the executed in particular as reinforced concrete elements precast elements are continuous, d. H. preferably arranged over the entire edge length of one or more elements extending U-beam, which are provided according to the reinforcement distances of the reinforcing grid with cuts / slots. To compensate for tolerances these are to be provided with excess over the inserted through screw connections of the reinforcing bars.

The thickness of the U-beams should be at least 20 mm, 25 mm is recommended. The connection to the concrete elements is made with nuts which are screwed onto the protruding reinforcing rods or bars provided with an appropriate thread.

Since the slots in the U-beams to compensate for tolerances considerable excess over the screw connections must have washers or screws / nuts with worn collar appropriate to ensure sufficient contact surface.

The U-beams are pushed under the connectors and screwed.

This connection type is exemplified in FIG. 13 and FIG. 14 illustrates.

In this case, FIG. 13 shows a section through a vertically oriented wall module 2, in this case with an associated attachment shell 1003. At the upper edge and the lower edge of the wall module 2, the U-beams 1004 can be seen, via which the connection to the adjoining wall modules, not shown here, is accomplished. The U-beams 1004 rest respectively with their legs 1006 on the edge surfaces of the associated wall modules and to a certain extent form spacers between adjacent wall modules. For a secure connection between U-beam 1004 and wall module 2, the protruding from the wall element, there with an external thread seen ends (screw) of the reinforcing bars 10 guided by associated slots in the leg of the U-beam and each secured by a screwed on the outside lock nut 1010.

The holes / elongated holes in the legs 1006 of the U-beams 1004, through which the ends of the reinforcing bars 10 are guided, are generously dimensioned in diameter so that the reinforcing bars 10 have corresponding clearance with loosened locknuts 1010, preferably at least 5 mm in each Direction.

The reinforcing bars 10 advantageously pass through the entire wall module 2 from edge to edge or from junction to junction, respectively. That is, the respective reinforcing bar 10 has at each of its two ends a connector of the type described above which interacts with an associated connector of the adjacent wall module. The two connectors at the opposite ends of a reinforcing bar 10 are preferably of the same type and have a similar dimensioning. The same applies to the further connection types described further below.

FIG. 14 shows the connection thus produced between two wall modules in plan view. Of the wall modules themselves, only the horizontal reinforcing bars 10 are visible in this simplified representation.

With correspondingly executed reinforcing grid, both vertical and horizontal connections between adjacent wall modules can be made in this way.

2. Screw connection type Box

The box-type screw connection (box) described below is also suitable for both horizontal and vertical connections.

This connection type is based on FIG. 15 to FIG. 18 illustrates. In this case, FIG. 15 in the left half of a perspective view of the reinforcement grid 1012 of a rectangular wall module 2 with each end connected to the reinforcing bars 10 boxes 1014. In the right half of the wall module 2 is shown in the delivery state with applied concrete casting compound. Each of the boxes 1014 is connected when joining the wall modules 2 with a corresponding box 1014 of the adjacent wall module 2 by means of a screw connection.

FIG. FIG. 16 shows a longitudinal section through a box-box combination connected in this way at the connection point of two wall modules 2.

FIG. 17 and FIG. 18 show two in FIG. 16 corresponding with Roman numerals marked cross sections.

On the side facing the wall module 2, the respective box 1014 is connected and fixed to the end of a reinforcing bar 10. This is done via a so-called LENTON Schraubmuffenverbindung 1016 or similar. The conically tapered, provided with an external thread end of the reinforcing rod 10 is screwed into a complementary shaped threaded sleeve 1018 or threaded sleeve, which forms an integral part of the box 1014.

The connection of the two identically constructed boxes 1014 with each other by an internal connecting pin 1020, which is provided at both ends with an external thread and an associated bolt channel 1022 passes through. The screwed-on locknuts 1024 each act on an intermediate anchoring plate 1026 which defines the bolt channel 1022 defining annular sleeve 1028 of the associated box 1014 and thus fix the arrangement. The annular end face 1030 of the respective annular sleeve 1028 forms an abutment surface which acts as a stop for the type of a slotted washer

Anchoring plate 1026. The ring sleeves 1028 of the two boxes 1014 and thus the two boxes 1014 as a whole are thereby pressed firmly against each other in the clamped state. On the one hand, the inner diameter of the bolt channel 1022 is greater than the outer diameter of the connecting bolt 1020, on the other hand, the respective anchoring plate 1026 within the enclosure formed by the walls of the box 1014 has sufficient freedom of movement, and finally also a sufficiently large axial gap between the respective lock nut 1024 and its opposite threaded sleeve / screw sleeve 1018, a very adaptable connection is created. The given when not yet tightened locknuts 1024 movement space in all three spatial directions is preferably at least 5 mm.

3. Screw connection type Terminator

Another type of connection, also suitable for both horizontal and vertical connections, is shown in FIG. 19 to FIG. 25 illustrates.

A single connector is shown in FIG. 21 in perspective and in FIG. 22 shown in a plan view. FIG. 23 to FIG. Figures 25 show various sections through individual components of the connector.

In this type of connection, the respective reinforcement bar 10 of the wall module 2 is anchored at the end in an end plate 1034, also referred to as a terminator. This can be done in particular by screwing, such as using a LENTON threaded sleeve joint or the like, wherein the threaded sleeve 1036 or screw sleeve is positively inserted and fixed in a corresponding bore through the end plate 1034 (see FIG. 24).

The connection of two end plates 1034 again takes place via bolts 1038, pass through the corresponding holes through the end plates 1034 and secured by nuts 1040. Correspondingly pierced steel plates 1042 between nuts 1040 and end plates 1034 effectively act as washers. In the exemplary embodiment, two bolts 1038 arranged symmetrically and parallel to the center axis of the reinforcing bar 10 are provided.

Important here, too, is the good adaptability of the connection for adaptation to unavoidable manufacturing tolerances or dimensional inaccuracies, as well as alignment accuracies during assembly. For this reason, the inner diameter of the bolted through 1038 holes in the end plates 1034 is greater than the outer diameter of the respective bolt 1038, so that with loosened or loosened nuts 1040, the desired freedom of movement (ie game) of preferably more than 5 mm in all directions is realized. This is for example apparent from FIG. 24 and FIG. 25 forth.

The length of the bolt 1038 is expediently dimensioned such that in the final assembly state, a significant gap between the two interconnected end plates 1034 remains. Such gaps are advantageously in the completion of the composite of the wall modules 2 building with a filling material, such as fine-grained concrete or mortar shed. This also applies mutatis mutandis to the gaps, joints and spaces at the joints of adjacent wall modules in the other types of connection described here.

The distance between adjacent, parallel rebars 10 of FIG. 20 recognizable reinforcing grid 1012 is typically of the order of 200 mm. This value should also be taken as the basis for the other connection variants described here, it being understood that considerable variations are possible depending on the application. A typical value for the diameter of the bolts 1038 is on the order of 20 mm or more.

4. Screw connection type claw I

This connection has a certain similarity to the type U carrier screw connection. The screwing of the reinforcing bars is not handled with sleeves, but On the other hand, metal claws are screwed onto the ends of the reinforcing bars to ensure full impact. Furthermore, a metal plate is screwed onto the U-carrier, which completes the carrier profile to the closed rectangular ring. The gap between the wall modules is expediently potted again.

This is exemplified in FIG. 26 in perspective and in FIG. 27 shown in section.

In FIG. 27 it can be seen connected to the respective reinforcing rod 10 metal claw 1046. It is made in one piece and has a screwed onto the reinforcing rod 10 threaded sleeve 1048 and arranged at right angles thereto, laterally projecting holding leg 1050 on. The end of the reinforcing bar 10 with the threaded sleeve 1048 is guided through a significant clearance hole in the leg 1052 of the U-beam 1054, so that the holding leg 1050 of the metal claw 1046 is held in the interior of the U-beam 1054. The screwed onto the U-beam 1054 metal plate 1058 closes the U-profile to a box.

Similar to the U-beam connection, the box disposed between the two wall modules 2 connected together preferably extends over the entire edge length thereof.

5. Screw connection type claw II

In this type of connection, the reinforcing rods 10 are provided at the end with screwed metal claws 1060 analogous to the connection of the type claw I. Deviating from this, however, the U-bracket 1062 does not extend over several or all connections of a side edge of the respective wall module 2, but only via the connector itself. The fixation is effected by screws 1064 running perpendicular to the longitudinal axis of the reinforcing bars 10, as shown in FIG. 28 in perspective and in FIG. 29 is shown in section.

6. Connection by double-headed anchor Finally, as an alternative or in addition to the connection types described so far, so-called double-head anchors can be used as connection means, which are inserted into corresponding recesses in the wall modules.

This ensures the possibility of tensile force transmission of the corresponding wall joint.

The connection system is exemplified in FIG. 30 illustrated by a section through two interconnected wall modules 2. In this example, two double-headed anchors 1070 arranged at right angles to each other are combined to form an anchor cross 1072. In particular, the two double-headed anchors 1070 can be firmly connected to one another at the point of intersection of the anchor cross 1072. The anchor cross 1072 can also be cast in one piece. Of course, it is also possible to use simple double-headed anchors 1070 as an alternative.

Each double-headed anchor 1070 has two thickened, radially projecting heads 1074, which are integrally formed on an anchor rod 1076, and which are fixed in a form-fitting manner in corresponding recesses or grooves of the respective associated wall module 2. After assembly, the recesses are expediently potted with a filling material, such as mortar or lightweight concrete.

LIST OF REFERENCE NUMBERS

2 wall module

4 connection unit

6 connecting element

8 wall body

10 reinforcing bar

12 stop plate

14 saddle element

16 base plate

18 leg plate

20 threaded bolts

22 receiving slot

24 slot edge

26 socket

28 locknut

30 transverse plate

32 frame plate

34 recess

36 anchor plate

38 threaded bolts

40 anchor nut

42 weld

1003 header

1004 U-beam

1016 thighs

1008 reinforcing bar

1010 locknut

1012 reinforcing grid

1014 box / box

1016 threaded sleeve connection 1018 Threaded sleeve 1020 Connecting bolt 1022 Bolt channel 1024 Lock nut 1026 Anchoring plate 1028 Ring sleeve

1030 face

1034 End plate 1036 Threaded sleeve 1038 Bolt 1040 Nut

1042 steel plate

1046 metal claw

1048 Threaded sleeve 1050 Holding leg 1052 legs

1054 U-beams

1058 metal plate 1060 metal claw

1062 U-clamp 1064 screw

1070 double-headed anchor 1072 anchor cross 1074 head

1076 anchor rod

Claims

claims

1. Wall module (2) designed as a prefabricated concrete component for erecting a structure with a wall body (8) having a regular base area and a number of edges, with a plurality of reinforcing bars (10) constituting a regular reinforcing grid in their entirety, which projects into the wall body (8) are cast in, wherein the reinforcing rods (10) penetrate the wall body (8) in each case substantially from edge to edge and are provided at their ends with connecting elements (6) for producing a connection with complementary connecting elements (6) of a directly adjacent wall module (2) are formed, and wherein the respective connecting element (6) so play-connected to the associated reinforcing rod (10) is connected, that in a direction perpendicular to the longitudinal direction of the reinforcing rod (10) level on all sides by at least 2 millimeters compared to an intended central position is displaceable.

Second wall module (2) according to claim 1 having a rectangular base and four edges, wherein the reinforcing rods (10) each extend parallel to the edges.

3. wall module (2) according to claim 1 or 2, wherein a displaceability is ensured by at least 5 millimeters.

4. wall module (2) according to one of claims 1 to 3, wherein the connecting elements (6) for a non-positive connection with each other, in particular by screwing, are designed.

5. wall module (2) according to one of claims 1 to 4, in which in each case at least two parallel reinforcing rods (10) to a connecting unit (4) combined and end connected to the same connecting element (6).

6. Wall module (2) according to any one of claims 1 to 5, wherein in the assembled state horizontally extending reinforcing bars (10) fixedly connected at the end with a at least one holding plate (12) supporting element, in particular welded are, wherein the respective holding plate (12) by a U-shaped saddle member (14) with a base plate (16) and two leg plates (18) is embraced, and wherein the leg plates (18) in turn with an associated horizontal connecting element (6) connected, in particular welded.

7. wall module (2) according to claim 6, wherein the respective support member consists of a single cuboid support plate (12) fixedly connected to a total of two reinforcing bars (12), in particular welded.

8. wall module (2) according to claim 7, wherein the respective support element comprises two parallelepiped holding plates (12) which are interconnected via two cuboid transverse plates (30), wherein the support element with four associated reinforcing bars (10) fixedly connected, in particular welded is, and wherein each of the two holding plates (12) by a horizontal connecting element (6) connected to a saddle element (14) is embraced.

9. wall module (2) according to any one of claims 6 to 8, wherein the respective horizontal connecting element (6) in a female version provided with an internally threaded bushing (26) and in complementary male version with an externally threaded threaded bolt (20) associated counter nut (28), wherein the male connecting element (6) and the female connecting element (6) cooperate in the connected state in the manner of a turnbuckle.

10. Wall module (2) according to claim 9, wherein the respective bushing (26) is screwed to the support element facing the end of a threaded bolt (20) which is provided for attachment to the saddle element (14).

11. wall module (2) according to claim 10, wherein the leg plates (18) of the respective saddle element (14) are aligned parallel to the horizontally extending reinforcing bars (10) and parallel thereto receiving slots (22) which through slot edges (24). are limited, wherein the respective threaded bolt (20) of the associated connecting element (6) along the receiving slots (22) between the leg plates (18) pressed and firmly connected in the region of the slot edges (24) with the leg plates (18), in particular welded.

12. wall module (2) according to any one of claims 1 to 11, wherein in the assembled state vertically extending reinforcing bars (10) fixedly connected to the end of a support member, in particular welded, which has a recess for carrying a threaded externally provided with a threaded bolt (38) , which is effective in conjunction with two screwed anchor nuts (40) and possibly existing, of the threaded bolt (38) penetrated anchor plates (36) as a vertical connecting element (6).

13. wall module (2) according to claim 12, wherein the respective support member comprises four rectangular-frame-like interconnected cuboid frame plates (32), wherein two mutually opposite frame plates (32) each rigidly connected to a reinforcing bar (10), in particular welded are.

14. wall module (2) according to any one of claims 1 to 13, wherein the wall body (8) in the manner of a sandwich construction, an outer shell, an inner shell and an intermediate core filling has, wherein the outer shell and the inner shell are connected to one another via reinforcing elements shear-resistant.

15. building, which is composed of a plurality of interconnected via the connecting elements (6) wall modules (2) according to one of claims 1 to 14.

16. Structure according to claim 15, wherein between the wall modules (2) existing joints and possibly in the region of the connecting elements (6) existing recesses in the respective wall body (8) with a filling material, in particular concrete, are shed.

17. A connector system for a prefabricated construction comprising a plurality of wall modules (2) according to one of claims 1 to 13, wherein the connector system comprises one or more components from the following group: a U-beam (1004, 1054, 1062) or a box (1014) disposed in the joint between two wall modules (2) and to which the reinforcing bars (10) are bolted,

a U-beam (1004, 1054, 1062) or a box (1014), which is arranged in the joint between two wall modules (2), and in which the reinforcing rods (10) by means of screwed metal claws (1046, 1060) engage positively,

a composite of two end plates (1034) or box (1014, 1054) connected together by bolts (1020, 1038), each end plate (1034) or each box (1014, 1054) being bolted to one of the reinforcing bars (10),

a double-headed anchor (1070).