EP3074572B1 - Bridging apparatus - Google Patents

Description

The invention relates to a bridging device in the center beam construction, for a building joint between two structural parts with at least two edge beams and at least one center carrier, which is arranged between the edge beams and at least one, the building structure bridging cross member, at their lateral ends in each case a truss bearing for storage have the traverse on the respective building parts.

In general, such devices are used to bridge building joints between two parts of the structure, in particular between two bridge parts such as a bridgehead or abutment and a bridge support or bridge girder or adjoining bridge girder so that vehicles and animals safely from one component to another component can reach. The construction joints also called movement joints or expansion joints, serve to compensate for movements of the building parts to each other.

Bridging devices are known from the prior art in various embodiments. Corresponding bridging devices in the center-carrier construction are in the DE 102 22 690 A1 and the DE 10 2011 050 977 A1 described. The DE 2208680 A1 discloses, for example, a bridging device in which a plurality of center supports are traversed by a traverse. A common form of lock-up device is the variant known as center-carrier construction or lamellar construction. In this case, the bridging device has at least one center carrier, which is arranged fixedly or slidably on at least one traverse mounted rotatably and / or displaceably on the adjacent structural parts.

In order to achieve uniform distances between individual center supports to each other and possibly to the edge beams and to prevent emigration of the center support, so-called control devices are used. Such control devices are formed for example by spring chains, scissors or with the help of so-called pivoting traverses.

In order to take into account the movement of the building parts in conventional trusses usually receiving areas are arranged on site, in which the trusses are partially inserted. These receiving areas are also referred to as truss boxes. The shape of these receiving areas depends on the expected movement and can accordingly be very expansive.

Depending on the structural conditions, the provision of truss boxes can be very difficult to practically impossible. For example, ends in steel bridges, the deck plate usually with an end cross member, which may not be broken. If such a bridge is not already designed during the planning so that enough space is provided for the truss box, retrofitting a truss box is sometimes practically impossible. Thus, especially in modernization work, the particularly advantageous bridging devices in center-girder or lamella construction can not be used at all.

Against this background, it is an object of the present invention to provide a novel bridging device, which in particular is designed to save space and also particularly simple and can be arranged directly between adjacent building parts or building joints.

The object is achieved in that the bridging device described above has a traverse with at least two truss segments, which are arranged displaceably along a longitudinal axis of the crossbar and each other in the direction of the longitudinal axis, so that the length of the traverse is variable. The bridging device according to the invention is thus retractable and extendable. As a result, a variable-length traverse is provided, whereby movements of the building parts to each other can be considered in a particularly space-saving manner. Since the truss according to the invention itself is longitudinally variable, now no separate receiving areas for insertion of the traverse must be provided on the building parts.

So far, inter alia, has not deviated from the conventional one-piece traverse and a multi-part, variable-length traverse after the model of telescopic arms, as they used in cranes, for example, since such a structure poses problems with bridging devices. Telescopic arms have segments, which are usually designed as rectangular telescoping tubes. The lateral surfaces of the segments are not aligned with each other, but have a height offset, which usually corresponds to the material thickness of the segments.

Due to the offset of the lateral surfaces, a center carrier arranged thereon can not easily change from one segment to the other and back. The center carrier of a bridging device in the center-carrier construction should / should be able to be uniformly arranged over the entire length of the traverse or the bridging device or can be displaced in order to take into account movements of the building joint. By this offset, it is also not readily possible, the tops of the center support flush to each other or to arrange at the same height on the various segments that the tops to each other and with the tops of the edge beams and the structural parts, for. Lanes are aligned. The load introduction takes place in known systems with telescopic arms substantially end. A load transfer large transverse forces transverse to the longitudinal extent of the telescopic arm, on the individual overlapping segments away, as would occur in bridging devices in center-carrier construction, has not been tested.

Conveniently, at least one truss segment is designed as a guide segment and a truss segment as a linkage segment, wherein the guide segment guides the linkage segment at least in the direction of the longitudinal axis of the truss. As a result, the linkage segment can be supported by the guide segment.

For a particularly robust and accurate guidance, the guide segment is according to a development at least partially formed as a tube in which the rodding segment is at least partially slidably mounted. This tube may, for example, have a rectangular or otherwise angular surface, so that the rodding segment can be arranged against rotation in the tube.

For a torsion-proof guide, the guide segment further has at least one spring extending parallel to the longitudinal axis of the traverse, which engages in a groove in the linkage segment or vice versa. By tongue and groove, it is advantageously also possible to compensate for an offset in the lateral surfaces of the truss segments, so that the surfaces of the truss segments are at least partially aligned flush with each other. As a result, it is possible to simply arrange center girders at the same height on the different truss segments and also to move them back and forth between the different truss segments.

The guide segment is formed further than in the plan view U-shaped clip or H-shaped double clasp, which surrounds the rodding segment at least partially laterally and holds at least transversely to the longitudinal axis of the traverse. This embodiment has the advantage that the linkage segment is not bordered by the guide segment at the top and thus has an accessible exposed area, on which a center carrier can be arranged independently of the relative position of the linkage segment to the guide segment.

The linkage segment may be formed corresponding to the guide segment to allow a convenient, largely backlash-free storage.

Developing the linkage segment is at least partially formed as a solid and / or hollow carrier, in particular as a T-beam, double T-beam and / or rectangular tube. Such carrier forms have proven themselves for bending stresses.

To bridge larger building joints, at least two center girders are further arranged in the bridging device, wherein the upper sides of the center girders are aligned flush with one another. Expediently, the upper sides of the center girders can also be designed to be flush with the upper sides of the edge girders and the upper sides of the building parts. In this way, it is ensured that the bridging device spans a plane on which vehicles or living beings can safely pass the building gap.

In a further development, the center carrier or carriers are arranged on a guide segment and / or a linkage segment of the traverse. According to the first alternative, the center carrier (s) can be arranged along the entire length of the traverse. In this way, a uniform distribution of a plurality of center supports on the traverse regardless of the Traversensegmente feasible. Theoretically, it is then possible to arrange all the center carrier of the lock-up device already on a traverse or a pair of traverses, so that the lock-up device can be realized with a minimum number of traverses. According to the second alternative, the center carrier (s) of the bridging devices are arranged in total on either a linkage segment or a guide segment of the crossbeam. As a result, the problem of a possible height offset of the truss segments can be circumvented. Also in this alternative, a bridging device with a minimum number of traverses can be realized. For example, the traverse can be designed as an obliquely arranged swivel traverse, so that a truss segment can be made particularly long, and on this long truss segment Already all center girders of the bridging device can be arranged.

In order to realize a uniform distribution of the central support on the traverse even when moving the building parts, at least one central support is at least in the direction of the longitudinal axis of the traverse slidably mounted on this further education.

For a uniform distribution of the center support on the traverse, at least one center carrier on a center support bearing, which allows a storage of the center support both above a guide segment, as well as a rod segment at the same height. Through this center support bearing, it is possible to compensate for any differences in the shape between guide segment and rod segment, for example. A vertical offset. In addition, this enables center carrier bearings to be displaced back and forth above the various truss segments.

Further, at least one center carrier bearing is formed such that it rests only on a rod segment or a guide segment and does not touch an adjacent truss segment. For example, the center carrier bearing can be arranged on a guide segment and bridged an inserted linkage segment without contact, so that a change of the center carrier bearing between different truss segments is avoided. For this purpose, the center-carrier bearing preferably has a U-shaped form.

In particular, in a guide segment formed in plan view as a U-shaped clasp or H-shaped double clasp, a preferably U-shaped center carrier bearing can be used. By means of the U-shaped center carrier bearing then a laterally edged linkage segment is bridged without contact. In this way, the center support bearing and the center support, for example, in tight building joints, are pushed in an area over the boom segment. This even without the center carrier bearing would have to change the truss segment. Furthermore, a height offset between the truss segments can be compensated or skipped.

In accordance with a further development, at least one center carrier has a center carrier bearing which allows a rotational movement of the traverse below the center carrier. As a result, on the one hand movements of the building parts in different directions can be considered. On the other hand, it is possible to arrange the traverse not only perpendicular to the edge beams, but also as a pivoting traverse at an oblique angle.

Further, the traverse is arranged obliquely in the lock-up device, that a change of or the center carrier between a rod segment and a Guide segment of the traverse is avoided. For with an oblique arrangement, for example at an angle of 45 °, a particularly long traversed in the retracted state can be arranged in the building joint. Movements of the building joint can now largely be considered with a relatively small change in length of the traverse by pivoting the Traverse. The traverse then represents a pivoting traverse. The Traversensegmente must only be displaced relative to each other in particularly small dimensions in order to minimize unwanted transverse movements of the building parts. Now it is possible that even with a bridging device having a plurality of center carriers, these can all already be arranged on a single truss segment, since at least one truss segment can be made sufficiently long for the swivel traverse for this purpose. In this embodiment, as an obliquely arranged pivoting traverse with at least one particularly long truss segment and a particularly small change in length of the traverse, a change of the center support for a uniform distribution of a plurality of center carrier along the longitudinal extent of the traverse is not necessary and avoidable. The bridging device can also be realized with a particularly small number of traverses.

In a further development, the pivoting beam can also be designed as a pivoting traverse control device for controlling the distances between the center supports arranged on the traverse. For this purpose, the center girders are attached to the traverse rotatably. It is also conceivable, however, the arrangement of other control devices, such as spring chains to auszusteuern the distances between the center support to each other.

In order to take into account movements of the building parts in different directions, for example in an earthquake, at least one truss bearing, preferably both truss bearings, the traverse is designed as Punktkipplager further education.

In a further development, the bridging device has a plurality of cross members, which are each spaced apart from one another and are preferably arranged in pairs in the bridging device. In this way, a particularly resilient bridging device is provided, since the load can be distributed to a plurality of traverses and unfavorable leverage effects are avoided. Such a bridging device is particularly suitable for relatively wide building joints.

According to a further development, adjacent trusses are substantially parallel with one another in plan view and / or arranged in opposite directions. In this way, a balanced load on the bridging devices is also possible if the center supports are each mounted exclusively on guide segments of the traverse. Because each two outer guide segments can be an intermediate rod segment bridged. In this way, in addition, the problems described above can be avoided because of a height offset of the truss segments. Furthermore, an undesired transverse movement of a bridging device with pivoting traverses can be prevented by the opposing arrangement.

In order to be able to arrange center supports particularly easily at the same height, one or more center supports is / are arranged or fastened on a single truss segment or several similar truss segments, in particular only on guide segments. In this way, the problem that might arise from a height offset or the differences in shape between the Traversensegmenten avoided. For by restricting the arrangement of the center support, for example, only on guide segments, the shape of the boom segments for a flush alignment of the tops of the center carrier need not be considered and vice versa.

According to a further development, at least one truss bearing, preferably both truss bearings, each truss, is designed such that the truss or the trusses can or may rotate under the or the center beams, so that the traverse or the traverses as Swiveling traverse (s) and in particular as a pivoting traverse control device for the control of the distances between the center support and the edge beams or between the center beams and the edge beams acts or act. In this way, it is particularly easy to realize uniform distances between the center carriers.

To control the distances between the center beams and the edge beams but also springs or other suitable alternative control devices between the edge beams and the or the center carriers may be arranged as a control device.

According to a development, a center carrier bearing or a truss segment has at least one stop for limiting the movement of a center carrier on the truss or beams. The movement of the or the center support can now be limited to a Traversensegment and in particular a change of or the center support to another truss segment can be avoided. The problem described above, which could result from a height offset or differences in the shape of the truss segments, can be avoided or avoided in this way.

Sliding surfaces may be formed between center carrier and center carrier bearing and / or between center carrier and cross member (s) of the bridging device. The bridging device may comprise at least one sliding material, in particular PTFE, UHMWPE, Polyamide and / or a multi-layer sliding material. The at least one sliding material may be arranged on a center support bracket and / or a center support and / or a cross member of the bridging device. Preferably, at least one center carrier bearing on a sliding material and acts as a sliding bearing.

Fig. 1

eine Draufsicht auf einen Ausschnitt einer eingefahrenen Überbrückungsvorrichtung gemäß einer ersten Ausführungsform;

Fig. 2

eine Schnittdarstellung des in Fig. 1 gezeigten Ausschnitts gemäß Schnittebene A-A;

Fig. 3

eine Schnittdarstellung des in Fig. 1 gezeigten Ausschnitts gemäß Schnittebene B-B;

Fig. 4

eine Draufsicht auf einen Ausschnitt einer ausgefahrenen Überbrückungsvorrichtungen gemäß der ersten Ausführungsform;

Fig. 5

eine Schnittdarstellung des in Fig. 4 gezeigten Ausschnitts gemäß Schnittebene A-A;

Fig. 6

eine Schnittdarstellung des in Fig. 4 gezeigten Ausschnitts gemäß Schnittebene B-B;

Fig. 7

eine Draufsicht auf eine eingefahrene Überbrückungsvorrichtung gemäß der ersten Ausführungsform;

Fig. 8

eine Draufsicht auf einen Ausschnitt einer eingefahrenen Überbrückungsvorrichtung gemäß einer zweiten Ausführungsform;

Fig. 9

eine Seitenansicht auf den Ausschnitt gemäß Fig. 8 in Schnittdarstellung;

Fig. 10

eine Draufsicht auf einen Ausschnitt einer ausgefahrenen Überbrückungsvorrichtung gemäß der zweiten Ausführungsform;

Fig. 11

eine Seitenansicht auf die Überbrückungsvorrichtung gemäß Fig. 10 in Schnittdarstellung;

Fig. 12

eine Draufsicht auf eine eingefahrene Überbrückungsvorrichtung gemäß der zweiten Ausführungsform;

Fig. 13

eine Draufsicht auf einen Ausschnitt eine eingefahrene Überbrückungsvorrichtung gemäß einer dritten Ausführungsform;

Fig. 14

eine Seitenansicht auf den Ausschnitt gemäß Fig. 13;

Fig. 15

eine Draufsicht auf einen Ausschnitt einer ausgefahrenen Überbrückungsvorrichtung gemäß der dritten Ausführungsform;

Fig. 16

eine Seitenansicht auf den Ausschnitt gemäß Figur 15 in Schnittdarstellung;

Fig. 17

eine Draufsicht auf eine eingefahrene Überbrückungsvorrichtung gemäß der dritten Ausführungsform;

Fig. 18

eine Schnittdarstellung der in Figur 13 dargestellten Schnittebene A-A;

Fig. 19

eine Schnittdarstellung der in Figur 13 dargestellten Schnittebene B-B;

Fig. 20

eine Seitenansicht auf eine erste alternative Ausführungsform einer Traverse einer Überbrückungsvorrichtung in Schnittdarstellung; und

Fig. 21

eine Seitenansicht auf eine zweite alternative Ausführungsform einer Traverse einer Überbrückungsvorrichtung.

The invention will be explained in more detail with reference to embodiments illustrated in the drawings. In it show schematically:

Fig. 1

a plan view of a section of a retracted lock-up device according to a first embodiment;

Fig. 2

a sectional view of the in Fig. 1 shown section according to section plane AA;

Fig. 3

a sectional view of the in Fig. 1 shown section according to sectional plane BB;

Fig. 4

a plan view of a section of an extended lock-up devices according to the first embodiment;

Fig. 5

a sectional view of the in Fig. 4 shown section according to section plane AA;

Fig. 6

a sectional view of the in Fig. 4 shown section according to sectional plane BB;

Fig. 7

a plan view of a retracted lock-up device according to the first embodiment;

Fig. 8

a plan view of a section of a retracted lock-up device according to a second embodiment;

Fig. 9

a side view of the neckline according to Fig. 8 in sectional view;

Fig. 10

a plan view of a section of an extended lock-up device according to the second embodiment;

Fig. 11

a side view of the lock-up device according to Fig. 10 in sectional view;

Fig. 12

a plan view of a retracted lock-up device according to the second embodiment;

Fig. 13

a plan view of a detail of a retracted lock-up device according to a third embodiment;

Fig. 14

a side view of the neckline according to Fig. 13 ;

Fig. 15

a plan view of a section of an extended lock-up device according to the third embodiment;

Fig. 16

a side view of the neckline according to FIG. 15 in sectional view;

Fig. 17

a plan view of a retracted lock-up device according to the third embodiment;

Fig. 18

a sectional view of in FIG. 13 illustrated section plane AA;

Fig. 19

a sectional view of in FIG. 13 illustrated section plane BB;

Fig. 20

a side view of a first alternative embodiment of a cross member of a lock-up device in a sectional view; and

Fig. 21

a side view of a second alternative embodiment of a cross member of a lock-up device.

In the figures, the same reference numerals are used for similar parts.

In the Fig. 1 to Fig. 7 a center-bridge type bypass device according to a first embodiment is shown. The bridging device 1 is arranged in the installed position in a building joint 2 between two structural parts 3, 4. In the present case, the bridging device 1 has two pairs of cross members 5, 6 bridging the structural gap 2, see also FIG Fig. 7 , These trusses 5, 6 each have two truss segments 7, 8, which are arranged displaceably along a longitudinal axis 9 of the traverse 5, 6 and each other in the direction of the longitudinal axis 9, so that the length of the trusses 5, 6 is variable.

In this case, a traverse segment is designed as a guide segment 7 and the other traverse segment as a linkage segment 8, whereby the guide segment 7 guides the linkage segment 8 in the direction of the longitudinal axis 9 of the traverses 5, 6. The guide segment 7 is formed as a rectangular tube, wherein the rod segment 8 has a corresponding shape and is slidably mounted in the guide segment 7. In the present case, the rod segments 8 are largely pushed into the guide segments 7, so that the trusses 5, 6 have a relatively small length. Fig. 1 shows a first pair of trusses 5, 6 of the lock-up device 1 in the retracted state. The two adjacent trusses 5, 6 are spaced from each other in plan view substantially parallel to each other and arranged in opposite directions. Center girders 12 are indicated here according to the dashed lines, cf. Fig. 2 ,

Fig. 2 shows that the lock-up device 1 according to the first embodiment, in addition, two edge beams 10, 11, which are each arranged on the building side building parts 3, 4. Between the edge beams 10, 11 and on the two pairs, the building structure 2 bridging trusses 5, 6 four center beams 12 are arranged in the present case. For this purpose, two center carrier bearings 13 for each two of the four center beams 12 are respectively arranged between the center carrier 12 and the guide segments 7 on the trusses 5, 6. The other two center supports 12 are not arranged on the traverse 5. At the lateral ends 14, 15 of the trusses 5, 6, the bridging device 1 in each case has a truss bearing 16, 17 for supporting the trusses 5, 6 on the respective structural part 3, 4 on. These truss bearings 16, 17 are each arranged in truss boxes on the respective building part 3, 4.

By comparing the Figures 2 and 3 , which in each case the trusses 5, 6 of the first pair of trusses 5, 6 of the lock-up device 1 is detailed, also the parallel spaced and opposite arrangement is apparent. While at the first in Fig. 2 Traverse shown 5, the guide segment 7 and the two center carrier bearing 13 left and the linkage segment 8 are arranged on the right, it is in the second traverse 6, which in Fig. 3 is shown, vice versa.

Fig. 4 shows the lock-up device 1 according to the first embodiment with the building joint 2 open, that is in a wide open position. The Traversensegmente 7, 8 are shifted so that the traverse 5, 6 has a relatively large length. For this purpose, the rod segments 8 are largely pushed out of the guide segments 7. The bridging device 1 is therefore extended in other words. The position of the center carrier 12 is indicated by dashed lines.

Fig. 5 and Fig. 6 show that the center supports 12 in this state to each other and to the edge beams 10, 11 are uniformly spaced. For this purpose, not shown springs between the edge beams 10, 11 and the center beams 12, arranged as a control device for controlling the distances here. Like from the FIGS. 5 and 6 can be seen, the trusses 5, 6 and the Traversensegmente 7, 8 and the control means are designed such that the center carrier 12 are arranged even with extended trusses 5, 6 with as far as possible pushed out of the guide segments 7 rod segments 8 exclusively on the guide segments 7. As a result, the upper sides 18 of the center girders 12 are always flush with one another and also aligned flush with the upper sides 19 of the edge girders 10, 11.

Fig. 7 shows a plan view of a retracted lock-up device 1 according to the first embodiment as a whole. The bridging device 1 comprises two pairs of parallel spaced and opposite trusses 5, 6 according to FIG Fig. 1 on. In each case, two of the four center supports 12 are arranged on the respectively identically designed and equally aligned trusses 5, 6 of the truss pairs. The center supports 12 are also indicated here by dashed lines. The two left-side center girders 12 are each spaced at two, according to Fig. 2 trained trusses 5 arranged, see. Fig. 2 . 5 and 7 , The arranged therebetween, opposite cross member 6 is not touched by the two left-side center support 12. The two right-hand center supports 12 are each spaced at two, according to FIG. 3 trained trusses 6 arranged, cf. Fig. 3 . 6 and 7 , The interposed, opposite cross member 5 is through the two left side Center carrier 12 not touched. The center supports 12 are arranged entirely exclusively on the guide segments 7 of the trusses 5, 6. If the lock-up device is now extended, the center carrier 12 arranged on each two spaced guide segments 7 bridges an intermediate linkage segment 8 of an opposite cross-member 5, 6. The alternating orientation of the cross-members 5, 6 results in a balanced loading of the bridging devices 1 and a uniform distribution of the center supports 12 is reached, although the center girders 12 are arranged exclusively on guide segments 7. The problems described above because of the height offset of the truss segments 7, 8 are avoided.

In the FIGS. 8 to 12 a lock-up device 1 according to a second embodiment is shown. Fig. 8 shows a first of the two trusses 5, 6 of the lock-up device and that this first cross member 5 has three truss segments 7, 8 and is arranged obliquely in the building joint 2. The traverse 5 represents a pivoting traverse. A middle guide segment 7 is formed as a rectangular tube, wherein two corresponding rod segments 8 protrude from the open end faces 20 of the middle Traversensegments 7 from this and are slidably mounted in this. Fig. 8 shows a retracted bridging device or traverse 5. The center carrier 12 are indicated by dashed lines only.

Fig. 9 shows that in the lock-up device 1 according to the second embodiment, four center support bearings 13 for arranging the center supports 12 are arranged on the middle guide segment 7. Opens the building gap pivoted Traverse 5. The center support 13 are formed such that they allow a rotational movement of the cross member 5 below the center support 12. At the protruding ends 14, 15 of the linkage segments 8 is a respective truss bearing 17 for supporting the cross member 5 to the respective building parts 3, 4 are arranged. These truss bearings 17 are designed such that the cross member 5 can rotate under the center beams 12. Even when pivoting the center carrier 12 of the traverse 5 remain on the middle guide segment 7. In addition, a uniform distance between the center beams 12 is maintained. For this purpose, the cross member 5 may be formed as a pivoting traverse control device or having springs.

Fig. 10 shows the lock-up device according to the second embodiment, wherein the building joint 2 by movements of the building parts 3, 4 is increased or opened. In the enlarged structural gap 2, the cross member 5 is pivoted, in addition, the two rod segments 8 are further pushed out of the middle guide segment 7, so that the cross member 5 has an enlarged length. The bridging device 1 is thus extended. The position of the center carrier 12 is indicated by dashed lines, cf. Fig. 11 ,

Fig. 11 shows that the four center supports 12 are equally spaced from each other and with respect to the edge supports 10, 11. The cross member 5 is formed and arranged obliquely in the building joint 2, that the center support 12 and the center support 13 do not change from a truss segment 7, 8 to the next. To further secure the center girders 12, the center girder bearing 13 or a truss segment 7, 8 may have at least one stop.

Fig. 12 shows a plan view of a retracted lock-up device 1 according to the second embodiment as a whole. The bridging device 1 has, in addition to the in Fig. 11 5 shown yet another second traverse 6 on. This is criticized by the first and differs from the first in that it is arranged in opposite directions. In this way, a movement of the lock-up device 1 transverse to the building parts 3, 4 is avoided despite the oblique arrangement of the trusses 5, 6. Dashed lines indicate the center supports 12.

The FIGS. 13 to 17 show a lock-up device 1 according to a third embodiment. This differs from the second embodiment, that these two trusses 5, 6 each having two outside, formed in plan view as U-shaped clips guide segments 7 and also a middle linkage segment 8. This rod segment 8 has a corresponding double-TT-carrier-like shape. The first cross member 5 of the lockup device is in Fig. 13 shown. The center supports 12 are indicated here by dashed lines.

At the middle as linkage segment 8 two center carrier bearings 13 are arranged. At the two outer truss segments 7, a U-shaped center carrier bearing 21 is arranged in each case. Such four center supports 12 are slidably mounted on the first cross member 5.

FIG. 14 shows that the U-shaped center support bearings 21, the middle truss segment 8 to a certain extent bridge. Therefore, although this central carrier bearing 21, although it would have to change from one truss segment 7, 8 to the next, remain arranged on the guide segment 7. At the outer ends 14, 15 of the cross member 5 truss bearings 16 are arranged, which allow a rotational movement of the cross member 5. If this traverse 5 is now pivoted, a uniform distance between center beams 12 is maintained. For this purpose, the cross member 5 may be formed as a pivoting traverse control device or having springs. It is also possible to arrange the cross member 5 vertically in the building joint 2.

As in FIGS. 13 and 14 are shown in a relatively small or closed building joint 2, the outer truss segments 7 of the first cross member 5 of the lock-up device 1 pushed towards each other and enclose the middle truss segment 8 side. As a result, the cross member 5 has a relatively small longitudinal extension, which results essentially from the sum of the lengths of the outer cross member segments 7. The lock-up device 1 is retracted.

The FIGS. 15 and 16 show the lock-up device 1 according to the third embodiment in the open state. In the open building joint 2, the cross member 5 is pivoted. Furthermore, the longitudinal extension of the traverse 5 is increased by the fact that the middle rod segment 8 is largely pushed out of the two outer guide segments 7 addition. The lock-up device 1 is extended. By dashed lines are the center carrier 12 in Fig. 15 indicated.

Out Fig. 16 It can be seen that the center supports 12 are equally spaced from one another and with respect to the edge supports 10, 11. Due to the differently shaped center support bearings 13, 21, the center supports 12 are mounted both above the guide segments 7 as well as the middle rod segment 8 at the same height. The center support bearings 21, which are arranged on the two outer center beams 12, are designed such that the respective center support bearing 21 rests only on an associated guide segment 7 and the adjacent, middle rod segment 8 is not touched. For this purpose, these center support bearings 12 preferably have a U-shaped configuration. These center carrier bearings 21 make it possible for the associated center supports 12 on the cross member 5 to be displaced at least partially back and forth between the crosspiece segments 7, 8, cf. Fig. 14 ,

Fig. 17 shows a plan view of a retracted lock-up device 1 according to the third embodiment as a whole. The bridging device 1 has, in addition to the in Fig. 13 5 shown yet another second, spaced Traverse 6 on. This only differs from the first in that it is arranged in opposite directions. An unwanted transverse movement of the bridging device 1 to the building parts 3, 4 is avoided by the opposite arrangement of the trusses 5, 6. The center supports 12 are indicated here by dashed lines.

Fig. 18 shows in detail how a central support 12 is mounted on a guide segment 7 of the first cross member 5 according to the third embodiment. Thus, a U-shaped center carrier bearing 21 between the center carrier 12 and guide segment 7 is arranged. The U-shaped center carrier bearing 21 is designed such that it bridges over a non-contacting over the top of the guide segment 7 projecting segment portion 22 of a bordered in the guide segment 7 linkage segment 8.

Fig. 19 shows how a center support 12 is mounted on a central rod segment 8 of the first cross member 5 according to the third embodiment. For this purpose, a mid-carrier bearing 13 arranged therebetween is arranged between the center carrier 12 and the guide segment 8.

FIGS. 20 and 21 show variants of Traverse 5. It shows Fig. 20 a first variant of the traverse 5, which differs from the first traverse 5 of the third embodiment of the lock-up device in that the or the guide segments 7 is formed in such a corresponding manner with respect to the linkage segment 8, so that the tops 23, 24th the various truss segments 7, 8 of the traverse 5 are aligned flush with each other. As a result, a height offset is avoided. For storage of the center carrier 12 on the various truss segments 7, 8, a center carrier bearing 13 between the cross member 5 and the center carrier 12 is arranged in each case. The traverse 5 allows a displaceable mounting of the center carrier 12 without different center carrier bearing both on a guide segment 7 as well as on a rod segment 8.

Fig. 21 shows a further variant of the traverse 5. This is similar to the trusses 5, 6 of the first and second embodiment of the lock-up device 1 is formed. The linkage segment 8 also has a spring 25, which engages in an upper-side groove 26 of the respective guide segment 7 such that the upper sides 23, 24 of the various truss segment 7, 8 of the traverse 5 are aligned flush with each other. Between the center carrier 12 and traverse 5 a center carrier bearing 13 is arranged. This alternative also enables a displaceable mounting of the center girders 12 without different center girder bearings both on a guide segment 7 and on a rod segment 8. <B> reference numerals </ b> bridging device 1 Bauwerksfuge 2 building component 3 building component 4 traverse 5 traverse 6 guide segment 7 pole section 8th longitudinal axis 9 edge beams 10 edge beams 11 center support 12 Center support bearings 13 The End 14 The End 15 Travers camp 16 Travers camp 17 top 18 top 19 front 20 Center support bearings 21 segment area 22 top 23 top 24 feather 25 groove 26

Claims (20)

1. A bridging device (1) in center girder construction for a building joint (2) between two building components (3, 4), wherein the bridging device (1) comprises at least two edge girders (10, 11) and at least one center girder (12), wherein the at least one center girder (12) is arranged between the edge girders (10, 11) and on at least one cross member (5; 6) bridging the building joint (2) that each have a cross member bearing (16; 17) for bearing the cross member (5; 6) on the respective building components (3, 4) at their lateral ends (14; 15),
   characterized in that
   the cross member (5; 6) has at least two cross member segments (7, 8; 20) that are arranged along a longitudinal axis (9) of the cross member (5; 6) and that are arranged displaceable relative to each other toward the longitudinal axis (9), so that the length of the cross member (7, 8) is variable.
2. The bridging device (1) according to claim 1, characterized in that at least one cross member segment (7; 8) is formed as a guiding segment (7) and one cross member segment (7; 8) is formed as a rodding segment (8), wherein the guiding segment (7) guides the rodding segment at least toward the longitudinal axis (9) of the cross member (5; 6).
3. The bridging device (1) according to any one of the preceding claims, characterized in that
   the guiding segment (7) at least in sections is formed as a tube in which the rodding segment (8) is supported such to be at least partially displaceable into the same.
4. The bridging device (1) according to any one of the preceding claims, characterized in that
   the guiding segment (7) has at least one tongue (25) that extends in parallel to the longitudinal axis (9) of the cross member (5; 6) and that engages a groove (26) in the rodding segment (8), or vice versa.
5. The bridging device (1) according to any one of the preceding claims, characterized in that
   the guiding segment (7) in the plan view is designed as a U-shaped clamp or an H-shaped double clamp which at least partially laterally encloses the rodding segment (8) and at least holds it transversally to the longitudinal axis (9) of the cross member (5; 6).
6. The bridging device (1) according to any one of the preceding claims, characterized in that
   the rodding segment (8) at least in sections is formed as a massive and/or hollow girder, in particular as T girder, double T girder, and/or a box section tubing.
7. The bridging device (1) according to any one of the preceding claims, characterized in that
   at least two center girders (12) are arranged in the bridging device (1), wherein the upper surfaces (18) of the center girders (12) are oriented flush with each other.
8. The bridging device (1) according to any one of the preceding claims, characterized in that
   the center girder(s) (12) is/are arranged on a guiding segment (7) and/or a rodding segment (8) of the cross member (5; 6).
9. The bridging device (1) according to any one of the preceding claims, characterized in that
   at least one center girder (12) is displaceably supported on the cross member (5; 6) at least toward the longitudinal axis (9) thereof.
10. The bridging device (1) according to any one of the preceding claims, characterized in that
    at least one center girder (12) has a center girder bearing (13; 21) that allows bearing of the center girder (12) both above a guiding segment (7) and a rodding segment (8) at the same height.
11. The bridging device according to claim 10, characterized in that
    the at least one center girder bearing (13; 21) is formed such that the center girder bearing (13; 21) only rests on one rodding segment (8) or one guiding segment (7) and does not touch an adjacent cross member segment (7; 8) and preferably has a U-shaped design.
12. The bridging device (1) according to any one of the preceding claims, characterized in that
    at least one center girder (12) has a center girder bearing (13; 21) that allows a rotational motion of the cross member (5; 6) below the center girder (12).
13. The bridging device (1) according to any one of the preceding claims, characterized in that
    the cross member (5; 6) is obliquely arranged in the bridging device (1) such that a change of the center girder(s) (12) between a rodding segment (8) and a guiding segment (7) of the cross member (5; 6) is avoided.
14. The bridging device (1) according to any one of the preceding claims, characterized in that
    at least one cross member bearing (16; 17), preferably both cross member bearings (16, 17) of the cross member (5; 6) is/are designed as a spherical bearing.
15. The bridging device (1) according to any one of the preceding claims, characterized in that
    the bridging device (1) has several cross members (5, 6) that each are arranged spaced from each other and preferably in pairs in the bridging device (1).
16. The bridging device (1) according to any one of the preceding claims, characterized in that
    adjacent cross members (5, 6) in the plan view are arranged substantially spaced in parallel and/or opposite to each other.
17. The bridging device (1) according to any one of the preceding claims, characterized in that
    one and/or more center girders (12) is/are attached to or arranged on a single cross member segment (7; 8) or several similar cross member segments (7; 8), in particular only on guiding segments (7).
18. The bridging device (1) according to any one of the preceding claims, characterized in that
    at least one cross member bearing (16; 17), preferably both cross member bearings (16, 17) of each cross member (5; 6) is/are designed such that the cross member(s) (5, 6) can rotate under the center girder(s) (12), so that the cross member(s) (5, 6) act(s) as pivoting cross member(s) and in particular as pivoting cross member control device for controlling the distances between the center girder (12) and the edge girders (10; 11) or between the center girders (12) and the edge girders (10; 11), respectively.
19. The bridging device (1) according to any one of the preceding claims, characterized in that
    springs are arranged between the edge girders and the center girder(s) as a control device for controlling the distances between the center girder (12) and the edge girders (10; 11) or between the center girders (12) and the edge girders (10; 11), respectively.
20. The bridging device (1) according to any one of the preceding claims, characterized in that
    a center girder bearing (13; 21) or a cross member segment (7; 8) has at least one abutment for limiting the movements of a center girder (12) on the cross member(s) (5; 6).

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