WO2014165892A1

WO2014165892A1 - Supporting structure

Info

Publication number: WO2014165892A1
Application number: PCT/AT2014/050089
Authority: WO
Inventors: Lutz Sparowitz
Original assignee: GÖTSCHL, Franz
Priority date: 2013-04-11
Filing date: 2014-04-11
Publication date: 2014-10-16
Also published as: AT514173A1

Abstract

The invention relates to a supporting structure, to a segment for such a supporting structure and to a method for producing the supporting structure (1), for example for a bridge or for an elevated roadway, comprising individual segments (2) which are formed by precast concrete parts having reinforcement (7; 7', 7'') running in the concrete cross section, wherein a first segment (2') is connected at a connecting point (5) to a second segment (2''), and comprising a clamping element (6) extending outside the concrete cross section of the precast concrete parts to clamp the segments (2) together at the connecting point (5), wherein the reinforcement (7') of the first segment (2'), running in the concrete cross section, is coupled to the reinforcement (7'') of the second segment (2''), running in the concrete cross section, by means of a force transmission element (20) projecting through the connecting point (5), in particular in the manner of a plug-in connection.

Description

Structure

The invention relates to a supporting structure, for example, for a bridge or for a runway, with individual segments, which are formed by precast concrete elements with a duri ^¬ fenden in the concrete cross-section reinforcing, wherein a first segment is connected to ei ^¬ ner connection point with a second segment, and with an outside of the concrete cross section of the concrete finished ^¬ parts extending tendon for clamping the segments at the junction.

Furthermore, the invention relates to a precast concrete segment for a supporting structure, with a reinforcing element running in the concrete cross-section and with a connection point provided for connection to a second segment, as well as a matching ^further precast concrete segment for a supporting structure.

Furthermore, the invention relates to a method for producing a structure, for example for a bridge or for a high-bay, from individual segments, which are formed by precast concrete elements with a running in concrete cross-section reinforcement, wherein a first segment and a second segment are interconnected and clamped together.

Furthermore, the invention relates to a building module, in particular for a supporting structure, with a precast concrete part with a reinforcement running in the concrete, wherein the precast concrete part is connected at a junction with another component.

Furthermore, the invention relates to a device for pouring into a prestressed reinforcement having precast concrete element and Be ^¬ tonfertigteil with such a device.

The erection of structures in segments successfully since vie ^¬ len years, for example in bridge ^¬ is, is. The individual segments are delivered here in the form of precast concrete elements, which are connected to each other at the end faces via dry joints. The precast concrete parts point an internal reinforcement, which may be formed by prestressing steels, but also by slack reinforcements. For the transmission of bending forces between the segments of an external longitudinal ^¬ bias is provided with which the segments are clamped together by friction at the joints. The external bias therefore bridges the joints between the segments. A disadvantage, however, in the known structures in segment ^¬ construction, however, a very powerful external bias required to limit the joint openings between the segments to the predetermined level. However, the attachment of the external tendons is expensive and expensive. The previous segment design therefore often requires uneconomically large amounts of external tendons.

Accordingly, the present invention has for its object to simplify the construction of structures in segmental design and to make cheaper, in particular, the use of external tendons should be reduced without affecting the power transmission between the segments. In addition, the invention sets itself the goal of further developing a structural module of the kind set forth in such a way that it can be connected in a stable and permanent manner to various other structural elements.

To achieve this object the structure of the type being ^¬ led is characterized in that the running in the concrete cross-section reinforcement of the first segment is coupled to the running in the concrete cross-section reinforcement of the second segment by means of a projecting through the joint force transmitting member.

According to the invention, therefore, the internal reinforcements of adjacent segments via the power transmission element for the transmission of forces are non-positively connected. Thus, the capacity of the internal reinforcements can be activated via the junction of ^¬ len time. Advantageously, therefore, the connections between the segments with the same external bias less prone to the formation of joint openings. Thus, the number or the strength of the external tendons can be reduced, whereby a particularly economical segment construction is made possible.

To increase the resistance of the structure it is favorable when the longitudinal axis of the force transmission element for Übertra ^¬ supply of tensile forces substantially parallel or coaxial with the longitudinal axis of the reinforcement in the first and second segment. Preferably, the longitudinal axis of the force transmission ^¬ element coincides with the longitudinal axis of the running in the first and second segment reinforcement.

In order to embed the force transmission element in the concrete section of the first segment, it is advantageous if the first segment has an anchorage for the force transmission element. Before ^¬ preferably comprises the anchoring particular releasable Verbin ^¬ dung means for holding the force transmitting member to with which the force transmission element in the mounted state to ^¬ least in the direction of power transmission, that is immovably fixed in the anchorage, in particular in the longitudinal direction of the power transmission element.

For stable mounting of the power transmission element, it is advantageous if the anchoring has an open to the junction socket element in which the Kraftübertragungsele ^¬ ment, preferably by means of a threaded connection, is held. The force transmission element is therefore preferably screwed into the bushing element. For this, have the power transmission ^¬ element and the socket element corresponding threaded elements. In the assembled state a first end region of the force transmission element can be retained in the socket member, wherein a second end portion of the permeated through the opening at the juncture of the force transmitting member engaging the second segment Benach ^¬ disclosed.

For the transmission of forces between adjacent segments, it is advantageous if the second segment has a connection open to the connection ^¬ receptacle for connection to the power transmission element. In the assembled state, the operating power supply ^¬ element at least in the direction of power transmission, ie in particular in the longitudinal direction of the power transmission member, un ^¬ movable in the receptacle is fixed.

In order to anchor the power transmission element for transmitting forces in the receptacle, it is advantageous if the force transmission element has a head part which is connected via a latching ^¬ or snap connection with the receptacle. Accordingly, a positive connection between the head ^¬ part of the force transmission element and the receptacle is preferably provided. Hereby, the power transmission element can be reliably held in the receptacle. The holder of the power transmission ^¬ element in the recording can be made detachable or insoluble.

To achieve the latching or snap connection, it is preferably provided that the head part of the force transmission element and the receptacle have cooperating guide elements, wel ^¬ che when connecting the segments elastic deformation, preferably a twist of the force transmission element or an elastic deformation of a locking element in the recording cause. When erecting the structure, the segments are connected to each other at the junction by the power transmission ^{element is} pushed ge with the headboard ahead in the recording ge. According to a first preferred embodiment, in this case the force transmission element is deformed via the guide elements, in particular transversely to the direction of insertion. When reaching the end position, the guide elements release the head part, which can thus return to the undeformed starting position. In the final position the head part is held by appropriate stops between the head portion and the receiving form-fitting manner in the up ^¬ acquisition. According to a second preferred embodiment, the receptacle has a latching element which is elastically deformed in engagement with the force transmission element. Upon reaching the end position, the locking element returns to the undeformed Aus ^¬ initial position, wherein the head part of the Kraftübertragungsele ^¬ ment is locked in the end position with the locking element. When Locking element is preferably a piece of pipe with a conically men running together end provided, which is elastically deformable by the head part of the power transmission element.

For positive guidance of the power transmission element when connecting the segments, it is advantageous if the head part of Kraftübertra transmission element has at least one, preferably more in particular star-shaped guide projections, which fit into an internal thread of the recording. When the segments aufei ^¬ nandertreffen, the guide projections of the operating power supply ^¬ elements engage in the correspondingly shaped internal threads on the one would take, whereby the head portion is elastically deformed. Upon reaching the end position, the guide protrusions of the power transmission member out of engagement with the internal thread of the receptacle, so that the head part returns ^¬ into the starting position and is fixed via corresponding abutment surfaces form-fit in the receptacle.

When the anchor is substantially complete completely be ^¬ arranged in the concrete cross-section of the first segment and / or recording in the Wesentli ^¬ chen in the concrete cross-section of the second segment, the connections for the Kraftübertragungsele ^¬ ment may advantageously integrated during manufacture into the Seg ^¬ mente become. It is advantageous if the anchorage or the recording associated with the reinforcements who the before the respective precast concrete segment is poured. Thus, when casting the precast concrete segment, a bond between the anchorage and the recording and the concrete mass.

For connecting the reinforcement in the first segment to the force transmission element, it is favorable if the anchoring for the force transmission element has a clamping force receiving element connected to the reinforcement in the first segment, so that tensile forces from the reinforcement in the first segment via the Spannkraftauf- receiving element on the force transmission element are transferable.

In addition, it is used to transfer forces between the adjacent segments advantageous if the receptacle for the power transmission element has a reinforcement connected to the reinforcement in the second seg ^¬ ment further clamping force receiving element, so that tensile forces from the power transmission element via the further clamping force receiving element in the reinforcement in the second segment are transferable.

For power transmission between the reinforcement and the force transmission element, it is advantageous if the Spannkraftaufnahmeele ^¬ ment and / or the other clamping force receiving element is connected via a reinforcement surrounding concrete body frictionally with the reinforcement of the first and second segment. This causes a so-called overlap shock.

In order to reliably transmit the forces occurring at the reinforcement over the concrete body, it is advantageous if a tubular body for receiving the reinforcement and the concrete body is provided as a clamping force receiving element and / or as another Spannkraftauf ^¬ receiving element. Accordingly, the reinforcement projects into the tubular body, which is at least partially filled with the concrete body. Preferably, the reinforcement is surrounded on all sides by the concrete ^¬ body within the tubular body.

Preferably, the tubular body in the first segment at the side facing away from the connection point side of the female element, preferably ^¬ preferably coaxially with the female element, angeord ^¬ net. The tubular body can in this case be connected via a welded connection with the bushing element.

To achieve the bonding effect between the reinforcement and the concrete body, it is advantageous if the tubular body comprises in particular on the lateral surface at least one, preferably several, Publ ^¬ voltage for the passage of the concrete. During casting of the concrete ^{prefabricated part} , the concrete penetrates via the openings for the passage of the concrete into the tubular body, whereby the bond between the reinforcement and the concrete body is produced. In the cast state, therefore, forces can be conducted from the reinforcement over the concrete body into the tubular body, which forces the force flow to the power transmission element passes. The power transmission ^¬ transfer between the concrete and the clamping force receiving member it follows predominantly in the openings by so-called Lochlei ^¬ bung forces.

When the tubular body by means of a spacer in the intended position coaxially at least kept to reinforcement, the reinforcement during casting of the precast concrete part vorteilhaf ^¬ ingly can be completely wrapped with the concrete body, so that a direct contact between the reinforcement and the tube body is prevented. As a spacer remaining in the precast concrete part, preferably made of plastic, be pre ^¬ see, which is preferably arranged at the end facing away from the junction of the tubular body. The distance ^¬ piece can be formed, for example, as a disc with a central Öff ^¬ tion for the passage of the reinforcement. In addition, a further spacer in the form of an assembly aid can be used in the production, which is arranged tigteils before pouring the Betonfer within the not yet provided with the power transmission ^¬ element anchoring. In a preferred embodiment, the Be ^¬ defense between two clamping blocks in a clamping bed is stretched for casting the precast concrete part. Due to the end anchorages, the position of the reinforcement, which is present in particular as a strand tensioning steel, specified exactly. The power transmission element can then be centered on the reinforcement using the distance ^¬ holder relative. In addition, a seal against the formwork can be achieved with the further spacer during casting. After hardening of the concrete, the further spacer is removed from the anchoring, so that the force transmission element can be inserted into the anchoring ^¬ .

According to a particularly preferred embodiment, the precast concrete elements as reinforcement at least one tensioned longitudinal element preferably prestressing steel, in particular strand tensioning steel on. In place of the prestressing steel, the arrangement of a passive or flaccid reinforcement in the concrete section of the precast concrete ^¬ part segment is possible. The object underlying the invention is also achieved by a prefabricated concrete segment of the initially defined type, wherein a projecting from the joint operating power ^¬ restriction member is provided which is coupled to the running in the concrete cross-section reinforcement. This segment therefore has the "male" connection means.

Accordingly, the object of the invention is achieved by a precast concrete segment of the type mentioned, in which an open connection to the connection is provided for connection to a power transmission element of the first segment, wherein the receptacle is coupled to the running in the concrete cross-section reinforcement. Therefore, this segment has the "fema ^¬ chen" connecting means.

The inventive method of the initially mentioned type is characterized in that the running in the concrete cross-section reinforcement of the first segment is coupled to the ver ^{¬ in} concrete cross-section reinforcement of the second segment.

With regard to the object underlying the invention, the construction module mentioned at the outset is characterized in that the reinforcement running in the concrete cross-section of the precast concrete ^¬ part is coupled by means of a protruding through the joint force ^¬ transmission element with the other component. The power transmission element, possibly also the anchoring ^¬ tion of the power transmission element in the precast concrete element or the receptacle for the power transmission element in the further construction ^¬ element can be formed as in the previously described structure, which represents a particularly preferred embodiment of the building module. In addition, however, in the context of the invention, other components can be non-positively connected to the Beweh ^¬ tion of the precast concrete part, creating a particularly resilient connection is created. Here, the tension of the reinforcement can be used in precast concrete in particular ^¬ sondere. In the inventive construction module, it is particularly favorable when a bolt element is provided with a widened head part or a threaded rod or present in ge ^¬ tensioned state prestressed reinforcement as a power transmission element. Moreover, the prefabricated concrete part is an anchor having as described above, wherein the further component may comprise a ^¬ On acquisition, as previously described. Of course, the arrangement of anchoring and recording on precast concrete or on the other component can also be reversed. Moreover, it is advantageous if the anchoring and / or the receptacle has or have a clamping force receiving element, as described above, in particular in the form of a tubular body with openings for the passage of the concrete.

If a clamping reinforcement provided in the tensioned state is provided as the force transmission element, the precast concrete element preferably has an insert part, for example a body which can be screwed into the socket element, with which the tensioning reinforcement can be fixed in the region of the connection point. It is advantageous if the insert part with clamping means, such as a clamping ring is connected, which clamp the clamping reinforcement in the assembled state of the insert part. In the clamped state, the clamping reinforcement, for example, via a clamping press, are stretched, so that the concrete finished ^¬ part is connected via the tensioned clamping reinforcement with the other component.

The device for pouring into a prestressing reinforcement having precast concrete element of the type mentioned is gekenn ^¬ characterized by an axial recess for receiving the

Clamping reinforcement having clamping force receiving element, which has at least one opening for the passage of the concrete on the lateral surface, so that the clamping force receiving element is set in ^¬ cast state for receiving a transmitted over the concrete clamping force of the clamping reinforcement.

The clamping force-receiving element is preferably formed as previously described in connexion with ^¬ to the supporting structure. Accordingly, it is as a clamping force receiving element preferably a particular cylind ^¬ cal tubular body provided.

In this embodiment, it is also advantageous if the tube body has a plurality of openings spaced apart in the axial direction for the passage of the concrete, wherein preferably also a plurality of openings spaced in the radial direction for the passage of the concrete are provided.

Furthermore, it is advantageous if the Spannkraftaufnahmeele ^¬ ment is connected to at least one spacer for holding the reinforcement in the intended position within the tubular body. Preferred embodiments of the spacer have already been explained with regard to the structure.

In use, the device described above is cast in a prestressed reinforcement having precast concrete part.

In such a precast concrete part is preferably provided as a clamping reinforcement prestressing steel, in particular strand tensioning steel, wherein the prestressing steel is surrounded within the axial recess of the clamping force receiving element substantially along the entire circumference of concrete.

To connect the precast concrete element with another Bauele ^¬ ment, it is advantageous if the clamping force receiving element with ei ^¬ nem from the concrete protruding force transmission element for connection to another component, in particular a wide ^¬ ren precast concrete part coupled.

With regard to the preferred embodiments and advantages of these embodiments, reference is made to the above explanations of the supporting structure according to the invention.

The invention will be further explained below with reference to an embodiment shown in the drawing, to which, however, it should not be limited ^¬ . In detail, in the drawing: Figure 1 schematically shows a supporting structure of individual provided with an internal reinforcement segments, which are clamped together at the connection points by means of external tendons.

Fig. 2 is a section along the line II-II in Fig. 1;

Fig. 3 is a section along the line III-III in Fig. 1;

4a to 4c are schematic views of a Spannbettvorrichtung for producing the segments of the structure;

5 is a view of the structure according to the invention in the connection region between a first segment and a second segment, wherein a force transmission element for non-positive coupling of the internal reinforcements is visible via the connection point.

6a to 6c, the connection between the ^{Kraftübertragungsele ¬} ment and a recording of the second segment, Figure 6c ei ^¬ NEN the latched end state corresponding section along the line VI-VI in Fig. 5;

Figure 7 is a view of the receptacle of the second segment, which has a steep internal thread for connection to a corresponding head part of the force transmission element.

8 shows a view of the fitted bed device according to detail A in FIG. 4b, from which the production of the first segment can be seen;

9 is a view of the first segment in the assembled state of the laterally projecting force transmission element.

10 is a view of the second segment in the mounted state of the receptacle for the power transmission element.

Fig. 11 is a view of a precast concrete element according to the invention with a clamping force receiving the clamping force receiving element and with a socket element for connection to a white ^¬ cal component;

FIG. 12 shows a view of the precast concrete element according to FIG. 11, wherein an insert part for connection to a force transmission element in the form of a threaded rod is arranged in the bush element; FIG.

FIG. 13 is a view of a building module according to the invention, protrudes at wel ^¬ chem the insert part in the precast concrete part on the Verbin ^¬ binding site in the further component;

14 shows a view of a building module, in which a guide rail is provided as a further component;

Fig. 15 is provided in the tensioned state the present prestressing steel is a view of a further embodiment of the building module, wherein as a power transmission element between the Betonfer ^¬ tigteil and the further component a;

Figure 16a, 16b, 16c each a view showing another OF INVENTION ^¬ to the invention execution of the building module with a locking connection between the precast concrete parts in various stages of assembly. and

Fig. 17 is a view of a locking element of the latching connection in Fig. 16a to 16c.

In Fig. 1 to 3, a supporting structure 1 is shown, which example is formed ^¬ as Hochfahrweg. The structure 1 consists of individual segments 2, which are arranged by means of (in the drawing schematically illustrated as a support) supports 3 at a predetermined height above a substrate. The elevated route forms a traffic level independent of the conventional road network, which creates an efficient transport network for congested cities. The segments 2 of the Hochfahrweges are precast concrete, preferably made of fiber concrete, especially ultra-high performance fiber concrete (UHPFRC, Ultra High Performance Fiber Reinforced Concrete) formed. The fiber concrete has particularly advantageous material properties for the production of the Hochfahrweg, including a much greater compared to conventional concrete durability and a higher compressive strength. As can be seen from the sectional views according to FIGS. 2, 3, the segment 2 has a central cavity 4, which extends over the entire length of the segment 2.

As is further apparent from FIGS. 1 to 3, the segments 2 are connected to one another at connection points 5 by external tensioning members 6 under prestressing. Because the tensioned tendons 6, a cohesion Zvi ^¬ rule is achieved when connecting the segments 2 of the segments. 2 As shown in Fig. 2, 3 can be seen, the clamping members 6 extend at least partially au ^¬ ßerhalb the concrete section of the segments 2, but 1 within the envelope of the structure, The tensioning elements 6 are only in Fig. 3 schematically apparent armature elements 6 ', so- ^¬ called Spannlisenen, possibly also by deflection, connected to the segments 2. As joints 5 between the structural parts 1 forming segments 2 dry joints 9 are provided which are formed by corresponding contact surfaces of the adjacent segments 2. The contact surfaces extend in the embodiment shown perpendicular to the longitudinal direction of the segments. 2

As can be seen from FIGS. 2, 3, the segments in the concrete cross-section have internal reinforcements 7. In the embodiment shown, the internal reinforcements 7 are formed by prestressing steels 8 cast into the concrete. The internal reinforcement 7 of the finished segment 2 therefore extends completely within the concrete section of the segment 2.

FIGS. 4a to 4c show diagrammatically the production of the segment 2 with a fitted bed device 10. The prestressed bed prestressing is a proven technology which has been used for decades to produce ment of precast concrete elements. Here, the prestressing steels 8 are biased between two clamping blocks 10 'in the manner of piano strings. The clamping blocks 10 'are usually clamped i a clamping bed 11, which is located in the hall floor of the precast concrete factory. Preferably stranded tension steels are used, which are tensioned by means of hydraulic tensioning presses 12 on one of the two tensioning blocks 10 'and then fixed by means of wedge anchors. To the thus tensioned strands a corresponding formwork 13 is arranged. In the formwork 13 concrete 14 is poured, which then surrounds the strained Lit zen. After hardening of the concrete 14, a non-positive connection between the prestressing steel 8 and the Be tone 14 sets, which is referred to as a composite effect. From the ^¬ sem reason, the pretensioning is also called "biased with immediate bond." The precast concrete parts can generally include any number of clamping bars 8 are frequently in a long fitted, for example, with ei ^¬ ner length of approximately 100 meters, at the same time several Betonfer ^¬ Untitled rush consecutively produced. a disadvantage of this method is to cause the prestressing strands can proceed only in a straight line. After hardening of the concrete 14, the prestressing strands are released from the clamping blocks 10 '. the prestressing steel 8 within the precast concrete contracts, whereby the concrete 14 The concrete 14 is thereby pressurized and thus prestressed The prestressed bed prestressing is particularly economical owing to the composite effect In the precast concrete parts advantageously no tendon anchorages are required Inaus are known in the art, the so-called "bias with subsequent composite" and the "bias without composite" in which the prestressing steels 8 surrounding ducts arranged in the precast concrete ^¬ who. These clamping systems require at the ends of corresponding tendon anchors, which are usually designed today in the form of wedge anchors. In contrast, the prestressing steels 8 are concreted in directly at the prestressed bed prestressing, so that the tendon anchors can be dispensed with in this design. Here, the same alkaline corro- protection as with conventional reinforcing steel reinforcement. For ultra-high-performance fiber concrete, this corrosion protection is particularly durable. Therefore thinner Betonüberdeckun ^¬ conditions between the reinforcement and the concrete surface are required

In addition, at least two methods for producing the dry joints 9 between the segments 2 are known in the prior art

• In the so-called "match casting method", the end face of the previously concreted segment 2 is used as formwork for the subsequently produced segment 2. The fresh concrete settles against the contact surface two contact surfaces then fit exactly to each other without that they need to be exactly flat. this method is larger companies at al sure that only the two nachei ^¬ Nander produced segments match.

• In the so-called "grinding method", the contact surfaces are precisely ground using special milling machines, allowing the segments 2 to be combined as required.

The internal prestressing steels 8 in this case form a longitudinal prestress which ends at the dry joints 9. Under the influence of bending moments at the load level, no tensile elongations occur in the joint cross-section as a result of the pre-stress. The joints remain closed. The transverse force can be passed over the dry joints 9 in the form of frictional forces. The segments 2 can be biased in the clamping bed both in the transverse direction and in the longitudinal direction. The internal prestressing 8 we also used for the transport of precast concrete parts.

A disadvantage of the known segment construction with dry joints 9 is that the reinforcements 7 terminate at the joints and thus can not contribute to the transmission of power between the segments 2. At load level, the dry joints 9 may only open slightly. This condition can lead to uneconomically large amounts of external tendons 6 in conventional structures. In the embodiment shown, in the concrete cross-section duri ^¬ Fende reinforcement 7 'of a first segment 2' of the structure 1 is coupled via a projecting through the joint 5 Kraftübertragungsele ^¬ ment 20 with extending in the concrete cross-section reinforcement 7 '' of an adjacent second segment 2 '' (see Fig. 5).

Advantageously, the present invention transmits the power transmission ^¬ element 20 contributes to transfer the occurring defects 7 ^¬ Tenden longitudinal forces on the dry joints 9 under load in the reinforcements. Thus, a frictional connection between the reinforcements 7 adjacent segments 2 is created. So the connection elements of the invention enable the sustainability of Spann ^¬ steels 8 on the dry joints 9 of time. Advantageously, Kings ^¬ NEN hereby the joint openings are kept small. Thus, the number or the strength of the tendons 6 can be reduced, whereby a particularly economical segment design made ^¬ light.

As can be seen in FIG. 5, the longitudinal axis of the force transmission ^element 20 extends essentially parallel to the longitudinal axis of the reinforcement 7 'in the first segment 2' and substantially parallel to the longitudinal axis of the reinforcement 7 "in the second segment 2", so that in the Use tensile forces between the segments 2 can be transmitted.

As is further apparent from FIG. 5, the first segment 2 'has an anchoring 21 in which the force transmission element 20 is anchored. The anchor 21 has an open to the connection point 15 towards ^¬ sleeve member 22, in which a ers ^¬ ter end portion of the force transmitting member 20 is held by a threaded ^¬ deverbindung 23rd Thus, the power transmission ^¬ element 20 is releasably secured in the anchor 21. The anchoring ^¬ tion 21 extends completely in the concrete section of ers ^¬ th segment 2 '.

As can also be seen from FIG. 5, the second segment meeting at the connection point 5 meets the first segment 2 ' 2 '' an open towards the connection point 5 receptacle 24, in which the force transmission element 20 is attached. On ^¬ acquisition 24 extends completely in the concrete cross-section of the second segment 2 ''. In the illustrated embodiment 20, the force transfer member to a head part 25, which via a locking or snap connection, that is positively held in the receptacle 24 in the mon ^¬ oriented state. Therefor have the head part 25 of the force transmitting member 10 and the Recordin ^¬ me 24 corresponding guide elements, which effect when Ver ^¬ bind the segments 2 ', 2''is a twist of the operating power supply elements ^¬ 20th In the embodiment shown, the head part 25 of the force transmission element 20 has a plurality of star-shaped guide projections 26 ', which are guided in a corre sponding ^¬ internal thread 27 of the receptacle 24. The inner ^¬ thread 27 is formed at an executed in the manner of a nut insert part 28, which is supported via a further Gewindever ^¬ connection 28 'in the socket-shaped receiving 24th

6a to 6c show schematically the anchoring of the force transmission element 20 in the receptacle 24 of the second segment 2 ''. When the two segments 2 ', 2''are pressed against each other during the construction of the structure 1 by means of the external tendons 6, the internal thread 27 of the receptacle 24 forces the head part 25 to rotate counterclockwise around its own longitudinal axis (cf. 6b). The elastic Torsionsverfor ^¬ tion of the power transmission element 20 and thus of the head part 25 increases until the head part 25 overcomes the end of the internal thread 27 and abruptly returns in a clockwise twisting in its relaxed starting position, the head part 25 is arranged in a stop position. The guide projections 26 'of the head part 25 come to lie here behind ent ^¬ speaking stops 27' of the insert member 28, so that the head part 25 is hooked in the insertion direction behind the internal thread 27 (see Fig. 6c).

As can be seen from FIG. 7, the internal thread 27 of the insert ^¬ part 28 is formed as seen in the longitudinal direction steep coarse thread ^¬ . The increase of the coarse thread is in this case specifies that the head part 25 when penetrating into the receptacle 24 by slightly more than 1.5 times the width of the Führungsvor ^¬ cracks 26 'twisted. In addition, the end face of the head part 25, as well as the threaded input of the insert member 28 is tapered so that the head part 25 when connecting the segments 2, regardless of the rotational position of the head part 25 screwed securely into the threaded inlet. The power transmission member 20 and the nut-like insert 28 may be made of stainless steel or other suitable material (eg, carbon fiber reinforced plastic). Alternatively, the cavity in the receptacle 24 may be equipped with a suitable anticorrosion agent. For example, in the up ^¬ acquisition 24, a double capsule can be ^¬ arranged with a two-component adhesive. Upon insertion of the head portion 25 of the operating power ^¬ restriction member 20 in the insert member 28, the double capsule is crushed, so that the two adhesive components are mixed miteinader. The adhesive fills the remaining cavity and provides the necessary corrosion protection.

As shown in Fig. 5 further can be seen, the anchor 21 for the power transmission element 20 to a to the reinforcement 7 'in ers ^¬ th segment 2' frictionally connected Spannkraftaufnahmeele ^¬ element 29, with which the tensile forces of the reinforcement 7 'in the first segment 2' can be transmitted to the power transmission element 20 via the clamping force receiving element 29. The receptacle 24 of the second segment 2 '' has a corresponding, with the Be ^¬ reinforcement that in the second segment 2 '' connected further clamping force ^¬ receiving element 30 on to the initiated by the force-transmitting element 20 tensile forces in the reinforcement 7 '' in the second segment 12 '' transferred to. In the embodiment shown, the reinforcement 7 'in the first segment 2' and the reinforcement 7 '' in the second segment 2 '' within the clamping force receiving element 29, 30 surrounded by a concrete body 31, 31 '. Thus, the reinforcements 7 ', 7''on the composite effect of the concrete frictionally connected to the clamping force receiving elements 29, 30.

As is further apparent from FIG. 5, the clamping force ^absorption elements 29, 30 are provided by tubular bodies 32, 33 for receiving the fibers. ments 7 ', 7''formed. The reinforcements 7 ', 7''extend coaxially with the tubular bodies 32, 33. The tubular bodies 32, 33 are filled with the concrete bodies 31, 31', which completely surround the reinforcements 17 ', 17''. In the illustrated embodiment, each tubular body encloses 32, 33 a single prestressing steel 8. Of course, each segment 12 of the structure 11 may include several ^¬ re prestressing steels, which force receiving member each in a separate tensioning 29 are 30.

5, the tubular body 32 in the first segment 2 'at the side facing away from the junction 5 side of the female member 22, coaxial with the female member 22, ^¬ ordered. Accordingly, the tubular body 33 in the second segment 2 '' is arranged coaxially with the sleeve-shaped receptacle 24 of the second segment 2 ''. The dimensions of the tubular body 32, 33 are chosen so that the tensile force of the prestressing steel 8 with ^{¬ means of} the composite effect on the concrete completely in the tubular body 32, 33 can be transmitted, so that an overlap shock is effected.

As can be seen from FIGS. 5 and 8, the tubular bodies 32, 33 have on the lateral surface a plurality of circular openings 34, in the embodiment shown, through which the concrete 24 can penetrate during the casting of the precast concrete part. In the cast-in state, a dowel-like force transmission through the concrete within the openings 34 of the tubular body 32 or 33 can hereby take place.

Fig. 8 shows the preparation of the first segment 2 'of the support ^¬ plant 1 within the formwork 13, wherein initially the anchoring ^¬ tion 21 is pushed over the prestressing steel 8. Subsequently, a preferably made of plastic mounting aid 35 is screwed into the internal thread of the sleeve member 22. The art ^¬ fabric portion serves both as a spacer between the prestressing steel 8 and the tubular body 22 and also as a place holder against the invading fresh concrete and also as a seal against the shuttering 13. In the embodiment shown, the mounting aid 35 is on the one hand with a fixing nut 37 to the formwork 13 bolted and on the other hand by means of a clamping ring 38 at clamped the tensioned wire. At the other end of the tubular body 22, a further spacer 36 is arranged. The spacer 36 is preferably also made of plastic and is designed in particular in the form of a spoke wheel, so that the fresh concrete can also flow through the spacer 36 via the end face of the tubular body 22 in the tubular body 22. By means of the assembly aid 35 and the spacer 36, a centering of the tubular body 32 with respect to the prestressing steel 8 is achieved. The plastic part of the mounting aid 35 also serves to press the tubular body 32 close to the formwork 13 and, if necessary, can be clamped to fix the formwork 13 to the prestressing steel. When stripping the plastic part is unscrewed from the tubular body 32. Subsequently, the prestressing steel 8 is cut off at an end of the bushing element 22 facing away from the connection point 5 (cf., FIG. 9). Finally, in the socket member 22 of the first segment 2 ', the bolt-shaped power transmission element 20 is screwed. The power transmission element 20 is preferably made of spring steel. At the front end of the star-shaped head part 25 ge ^¬ forms, with which the connection to the second segment 2 '' is made.

As seen from Fig. 10, the receptacle 24 of the second segment 2 '' with the insertion portion 28 fitted, which on the outside a fine thread 28 ', which in a corresponding ^¬ the fine threads on the inside of the receptacle 24 to at ^¬ is screwed in. The arrangement of the reinforcement 7 'in the tubular body 33 of the second segment 2''corresponds to the aforementioned connection of the reinforcement 7' to the tubular body 32 of the first segment 2 '.

In Fig. 11, a precast concrete part 100 is shown, in which the clamping force receiving element 29 described above in connection with the supporting structure 1 is cast. The Spannkraftaufnahmeele ^¬ ment 29 with the tubular body 32 has an axial recess for receiving the prestressing steel 8. On the lateral surface, the openings 34 are formed for the passage of the concrete, so that the clamping force receiving element 29 in the cast-in state for mounting would be adapted to the transmitted over the concrete clamping forces of the prestressing steel 7 is established. The precast concrete part 100 additionally has a socket element 22 which is open to the connection point 5 and in which various insert parts for connecting various force transmission elements 20 can be mounted.

According to FIG. 12, a thick-walled hollow cylinder 39 is provided as the insert part, which has both an external thread 23 and an internal thread 40. This insert is screwed with its external thread 23 in the socket member 22. A threaded ^rod 41 with a coarse thread or (not shown) a screw with a fine thread can be screwed into the internal thread 40, wherein a tensile force 42 between the precast concrete part 100 and another component 101 (see FIG. 13, 14) is transferable.

According to FIG. 13, the insert part projects beyond the connection point 5 into the further component 101 (only partially shown in FIG. 13), so that in addition to the tensile force 42, a transverse force 43 can also be transmitted via the dry joint 9.

The precast concrete part 100 may be connected to the further structural element 101 to form a structural module 102, the structural framework 1 described above representing only one preferred embodiment.

In Fig. 14, an embodiment of the tree module 102 is shown in which as a further component 101, a guide rail 103 is provided ^¬ seen, which is connected via the power transmission element 20 with the (ge ^¬ FIG. 13 trained) precast concrete 100.

In Fig. 15 is a further embodiment of the construction module 102, before ^¬ shown preferably for the structure 1, in which as a force ^¬ transmission element 20 between the precast concrete element 100 (for example, the first segment 2 'of the structure 1) and the further Bauele ^¬ ment 101 (eg, the second segment 2 '' of the structure 1) is provided in the tensioned state prestressing steel 8 in the form of a monorail. The construction module 102 includes the previously beschrie ^¬ bene clamping force receiving member 29, which with the socket element 22 is connected. The prestressing steel 8 of the operating power ^¬ restriction member 20 is connected to a wedge anchor head 45, wedges 46, ei ^¬ ner wedge locking washer 47, a polyethylene Hüllrohrschlauch 48 and corrosion protection grease 49th The tension reinforcement is coupled by means of an insert part 44 with the Spannkraftauf ^¬ pickup element 29th As insert 44 in the gezeig ^¬ th embodiment, a cylindrical steel body is provided with a fitting in the female element 22 externally threaded. Furthermore, the insert 44 has a bore extending in the longitudinal direction, whose diameter is slightly larger than the outer diameter of the plastic cladding tube of the monolith. In addition, this hole widens towards the end something, whereby the gap between the insert 44 and the sheath tube widens conically. The cladding tube is enclosed in this area by a conical aluminum ring 50, which is set up as a clamping means for clamping the clamping reinforcement. When assembling the monolayer or when Vorspan ^¬ NEN this aluminum ring 50 is wedge-like pressed into the cone of the insert 44 and clamps it to the end of the Hüllschlauches and on this to the monolayer. When Einschrau ^¬ ben of the insert 44 to the anchor head of monostrand the previously needed in the socket member 22 corrosion protection is displaced ^¬ fat 49th The fat first fills the cavity completeness, ^¬ dig out. The excess fat over Austrittsöff ^¬ calculations in the insert 44 is pressed. The monolitze will

finally stretched at the other end by means of a commercially available hydraulic clamping press. This not only a non-positive connection to the associated reinforcement 7 'in the precast concrete 100 produce, but the structural module 102 can also be stretched in the region of the butt joint and the dry joint 9. This embodiment has the advantage that the dry joint 9 opens less strongly under load.

In Fig. 16, a further embodiment of the construction module 102 ge shows ^¬, which essentially corresponds to that of Fig. 5, so that will be discussed below only to the differences from Fig. 5. 16, the receptacle 24 of the further compo ^¬ ment 101 (in the embodiment shown, the second segment 2 '' 1), a latching element 60, which is elastically deformed on connection to the power transmission element 20 on the precast concrete part 100 (in the illustrated embodiment, the first segment 2 'of the structure 1) (compare FIGS. 16a, 16b). Upon reaching the end position, the locking element returns to the undeformed Aus ^¬ initial position, the head portion 25 of the power transmission ^¬ elements 20 is latched in the end position with the locking element 60 (see Fig .. 16c).

As can be seen from FIG. 17, in the embodiment shown, a spring tube piece is provided as latching element 60, the front end of which, when viewed in the connecting direction, converges conically. In order to allow the elastic deformation of the spring tube piece or to facilitate, the spring piece of tube at the front end of the longitudinal slots 61, which define expandable portions of the spring ^¬ pipe piece. If the force transmission element 20 is pressed with ^¬ means of the external longitudinal bias in the receiver 24, the spreading portions of the spring tube piece can be forced apart by the head part 25 such that the head ^¬ part can pass through the locking element 60 25th Thereafter, the elastically resilient end of the latching element 60 snaps back into the starting position, so that the head part 25 is latched behind the latching element 60.

Claims

Claims:

1. structure (1), for example, for a bridge or for a high-bay, with individual segments (2), which by precast concrete elements with a running in concrete cross-section reinforcement

(7, 7 ', 7'') are formed, wherein a first segment (2') at ei ^¬ ner connection point (5) with a second segment (2 '') is ver ^¬ connected, and with an outside of the concrete cross section of Precast concrete elements running tendon (6) for clamping the segments (2) at the connection point (5), characterized in that extending in the concrete cross-section reinforcement

(7 ') of the first segment (2') by means of a projecting through the Verbin ^¬ binding site (5) force-transmitting element (20) with extending in the concrete cross-section reinforcement (7 '') of the second segment (2 '') is coupled.

2. supporting structure (1) according to claim 1, characterized in that the longitudinal axis of the force transmission element (20) for transmitting ^¬ tion of tensile forces substantially parallel or coaxial with the longitudinal axis of the reinforcement (7, 7 ', 7'') in the first ( 2 ') and second segment (2'') extends.

3. supporting structure (1) according to claim 1 or 2, characterized in that the first segment (2 ') has an anchoring (21) for the force ^¬ transmission ^element (20).

4. supporting structure (1) according to claim 3, characterized in that the anchoring (21) to the connection point (5) open socket element (22), in which the Kraftübertragungsele ^¬ ment (20), preferably by means of a threaded connection (23), is held.

5. supporting structure (1) according to one of claims 1 to 4, characterized in that the second segment (2 '') to a connec ^¬ tion point (5) open receptacle (24) for connection to the force transmission element (20).

6. supporting structure (1) according to claim 5, characterized in that the force transmission element (20) has a head part (25) which is connected via a latching or snap connection with the receptacle (24).

7. supporting structure (1) according to claim 6, characterized in that the head part (25) of the force transmission element (20) and the receptacle (24) cooperating guide elements, which when connecting the segments (2) an elastic Verfor ^¬ tion, preferably one Twisting, the Kraftübertragungsele ^¬ element (20) or an elastic deformation of a locking element

(60) effect in the recording.

8. supporting structure (1) according to claim 7, characterized in that the head part (25) of the force transmission element (20) at least one, preferably more in particular star-shaped guide projections (26 ') which in an internal thread (27) of the receptacle (24 ) fit.

9. supporting structure (1) according to one of claims 3 to 8, characterized in that the anchoring (21) substantially completely in the concrete cross section of the first segment (2 ') and / or the receptacle (24) substantially completely in the concrete cross section of the second Segments (2 '') is arranged.

10. supporting structure (1) according to one of claims 1 to 9, characterized in that the anchoring (21) for the Kraftübertra ^¬ transmission element (20) connected to the reinforcement (7 ') in the first segment (2') clamping force receiving element (29 ), so that tensile forces of the reinforcement (7) in the first segment (2 ') over the clamping force receiving element (29) on the Kraftübertragungsele element (20) are transferable.

11. supporting structure (1) according to one of claims 1 to 10, characterized in that the receptacle (24) for the force transmission ^¬ element (20) with the reinforcement (7) in the second segment (2 '') connected further clamping force receiving element ( 30), s that tensile forces from the force transmission element (20) over the wide ^¬ re clamping force receiving member (30) in the reinforcement (7) (2 '') in the two ^¬ th segment are transferable.

12. Support structure (1) according to claim 10, characterized in that the clamping force receiving element (29) and / or the wider ^¬ re clamping force receiving element (30) via a reinforcement (7; 7 ', 7'') enclosing concrete body (31 , 31 ') is non-positively connected to the reinforcement (7; 7', 7 '') of the first (2 ') or second segment (2).

13. supporting structure (1) according to claim 12, characterized in that as a clamping force receiving element (29) and / or as another clamping force receiving element (30) a tubular body (32, 33) for receiving the reinforcement (7, 7 ', 7' ' ) and the concrete body (31, 31 ') is provided.

14. supporting structure (1) according to claim 12 with claim 4, characterized in that the tubular body (32) in the first segment (2 ') on the side facing away from the connection point (5) side of the socket element (22), preferably substantially coaxially to Bushing element (22) is arranged.

15 supporting structure (1) according to claim 13 or 14, characterized in that the tubular body (32, 33) in particular on the Mantelflä ^¬ che at least one, preferably a plurality, opening for the passage of the concrete (34).

16. Structural support (1) according to one of claims 13 to 15, characterized in that the tubular body (32, 33) by means of at least ei ^¬ Nes spacer (35, 36) in the intended position coaxial with the reinforcement (7; 7 ', 7 '') is held.

17 supporting structure (1) according to one of claims 1 to 16, characterized in that the precast concrete elements as a reinforcement (7; 7 ', 7'') at least one tensioned longitudinal element, preferably tension ^¬ steel (8), in particular strand tensioning steel.

18. precast concrete segment (2 ') for a supporting structure (1), with a reinforcement running in the concrete cross-section (7') and with a for connection to a second segment (2 '') provided connection point (5), characterized by a of the Verbin ^¬ binding site (5) protruding force-transmitting element (20) wel ^¬ ches is coupled to the running in the concrete cross-section reinforcement (7 ').

19. precast concrete segment (2 '') for a supporting structure (1), with ei ^¬ ner in the concrete cross-section extending reinforcement (7 '') and with a for connection to a first segment (2 ') provided connection point (5) by the Verbin ^¬ binding site (5) open receptacle (24) for connection to a force transmission element (20) of the first segment (2 '), wherein the receptacle (24) with extending in the concrete cross-section Be ^¬ Wehrung (7' coupled ') is.

20. A method for producing a structure (1), ^{beispielswei ¬} se for a bridge or for a runway, from individual segments, which are formed by precast concrete elements with a running in concrete cross-section reinforcement (7; 7 ', 7''), wherein a first segment (2 ') and a second segment (2'') ^{miteinan ¬ are} connected and clamped together, characterized in that extending in the concrete cross-section reinforcement (7') of the first segment (2 ') with the running in the concrete cross-section reinforcement ( 7 '') of the second segment (2 '') is coupled.

21 construction module, in particular for a supporting structure (1), with a Be ^¬ tonfertigteil with a reinforcement running in the concrete (7, 7 ', 7'') _/ wherein the precast concrete part is connected at a connection point (5) with another component, characterized in that extending in the concrete cross-section reinforcement (7 ') of the precast concrete part by means of a connection ^¬ by the point (5) projecting force transmission element (20) is coupled to the white ^¬ cal component.

22. A construction module according to claim 21, characterized in that as a force transmission element a bolt element with a widening th headboard or a threaded rod or the tensioned stood to ^¬ This prestressing reinforcement is provided.

23. A device for pouring into a prestressed reinforcement having precast concrete element, characterized by an axial recess for receiving the clamping reinforcement exhibiting clamping force receiving element, which has at least one opening for the passage of the concrete on the lateral surface, so that the clamping ^¬ force receiving element in the cast state for Recording a transmitted over the concrete clamping force of the clamping arm is set up.

24. Device according to claim 23, characterized in that as a clamping force receiving element, a particular cylindrical tubular body is provided.

25. The device according to claim 24, characterized in that the tubular body has a plurality of openings spaced apart in the axial direction for the passage of the concrete, wherein preferably also a plurality of radially spaced openings are provided for the passage of the concrete.

26. Device according to one of claims 23 to 25, characterized in that the clamping force receiving element is connected to at least one spacer for holding the reinforcement in the intended position within the tubular body.

27. precast concrete element with a device according to one of claims 23 to 26.

28. precast concrete element according to claim 27, characterized in that as prestressing reinforcement a prestressing steel (8), in particular stranded clamping steel, is provided, wherein the prestressing steel is surrounded within the axial recess of the clamping force receiving element substantially ^¬ chen along the entire circumference of concrete.

29. precast concrete element according to claim 27 or 28, characterized in that the clamping force receiving element with a from the Concrete protruding power transmission element for connection to another component, in particular a further precast concrete element coupled.