Abstract
A bridging device in center girder construction for a building joint between two building components having at least two edge girders and at least one center girder arranged between the edge girders and on at least one cross member bridging the building joint that each have a cross member bearing for bearing the cross member on the respective building components at their lateral ends. The object of the present invention is to provide a novel bridging device that is formed in particular space-saving. The initially described bridging device has a cross member having at least two cross member segments arranged along a longitudinal axis of the cross member and arranged displaceable relative to each other toward the longitudinal axis, so the length of the cross member is variable.
Claims
1. A bridging device for a building joint between two building components, the bridging device comprising: at least two edge girders; at least one center girder arranged between the at least two edge girders; and at least one cross member bridging the building joint, each of the at least one cross member having a cross member bearing for bearing lateral ends of the at least one cross member on the respective building components, wherein each of the at least one cross member has at least two cross member segments arranged along a length of the at least one cross member, the at least two cross member segments being displaceable relative to each other, such that the length of the at least one cross member is variable, wherein the cross member bearings allow pivotal movement between the at least one cross member and the edge girders which rest thereon.
2. The bridging device according to claim 1, wherein at least one of the at least two cross member segments includes a guiding segment and a rodding segment, and the guiding segment guides the rodding segment along a longitudinal axis of the at least one cross member.
3. The bridging device according to claim 2, wherein the guiding segment includes a tube in which the rodding segment is displaceably received.
4. The bridging device according to claim 2, wherein the guiding segment has at least one tongue that extends parallel to the longitudinal axis of at least one the cross member and that engages a groove in the rodding segment.
5. The bridging device according to claim 2, wherein the guiding segment includes a U-shaped clamp or an H-shaped double clamp, the guiding segment laterally enclosing the rodding segment and holding the rodding segment transversally to the longitudinal axis of the at least one cross member.
6. The bridging device according to claim 2, wherein the rodding segment is formed as a massive and/or hollow girder.
7. The bridging device according to claim 6, wherein the rodding section includes a T girder, double T girder, or a box section tubing.
8. The bridging device according to claim 1, wherein the at least one center girder comprises at least two center girders having upper surfaces oriented flush with each other.
9. The bridging device according to claim 1, wherein the at least one center girder is arranged on a guiding segment and/or a rodding segment of the at least one cross member.
10. The bridging device according to claim 1, wherein the at least one center girder is supported on the at least one cross member toward a longitudinal axis of the at least one cross member.
11. The bridging device according to claim 1, wherein the at least one center girder has a center girder bearing that allows bearing of the at least one center girder both above a guiding segment and a rodding segment at the same height.
12. The bridging device according to claim 11, wherein the at least one center girder bearing only rests on one rodding segment or one guiding segment and does not touch an adjacent cross member segment.
13. The bridging device according to claim 12, wherein the at least one center girder bearing has a U-shaped design.
14. The bridging device according to claim 1, wherein the at least one center girder has a center girder bearing that allows rotational motion of the at least one cross member below the at least one center girder.
15. The bridging device according to claim 1, wherein the at least one cross member is obliquely arranged in the bridging device.
16. The bridging device according to claim 1, wherein at least one of the cross member bearings comprises a spherical bearing.
17. The bridging device according to claim 1, wherein the at least one cross member comprises a plurality of cross members spaced from each other.
18. The bridging device according to claim 17, wherein adjacent cross members of the plurality of cross members are arranged substantially spaced in parallel.
19. The bridging device according to claim 17, wherein cross members of the plurality of cross members are arranged in pairs.
20. The bridging device according to claim 1, wherein the at least one center girder is attached on a single cross member segment.
21. The bridging device according to claim 1, wherein the at least one cross member is configured to rotate under the at least one center girder to control distances between the at least one center girder and the at least two edge girders.
22. The bridging device according to claim 1, further comprising a control device comprising springs arranged between the at least two edge girders and the at least one center girder, the control device being configured to control a distance between the at least one center girder and the at least two edge girders.
23. The bridging device according to claim 1, wherein a center girder bearing or at least one of the cross member segments has at least one abutment for limiting the movement of the at least one center girder on the at least one cross member.
24. The bridging device according to claim 1, wherein the at least one center girder is attached only on guiding segments.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
(1) In the following, the invention is explained in detail with the help of the examples illustrated in the drawings. Here, by way of example:
(2) FIG. 1 shows a plan view of a part of a retracted bridging device according to a first embodiment;
(3) FIG. 2 shows a sectional view of the part shown in FIG. 1 according to sectional plane A-A;
(4) FIG. 2A shows a sectional view of an alternative embodiment of the part shown in FIG. 1 according to sectional plane A-A;
(5) FIG. 3 shows a sectional view of the part shown in FIG. 1 according to sectional plane B-B;
(6) FIG. 4 shows a plan view of a part of an extended bridging device according to the first embodiment;
(7) FIG. 5 shows a sectional view of the part shown in FIG. 4 according to sectional plane A-A;
(8) FIG. 6 shows a sectional view of the part shown in FIG. 4 according to sectional plane B-B;
(9) FIG. 7 shows a plan view of a retracted bridging device according to the first embodiment;
(10) FIG. 8 shows a plan view of a part of a retracted bridging device according to a second embodiment;
(11) FIG. 9 shows a side view of the part according to FIG. 8 in a sectional view;
(12) FIG. 10 shows a plan view of a part of an extended bridging device according to the second embodiment;
(13) FIG. 11 shows a side view of the bridging device according to FIG. 10 in a sectional view;
(14) FIG. 12 shows a plan view of a retracted bridging device according to the second embodiment;
(15) FIG. 13 shows a plan view of a part of a retracted bridging device according to a third embodiment;
(16) FIG. 14 shows a side view of the part according to FIG. 13;
(17) FIG. 15 shows a plan view of a part of an extended bridging device according to the third embodiment;
(18) FIG. 16 shows a side view of the part according to FIG. 15 in a sectional view;
(19) FIG. 17 shows a plan view of a retracted bridging device according to the third embodiment;
(20) FIG. 18 shows a sectional view of sectional plane A-A illustrated in FIG. 13;
(21) FIG. 19 shows a sectional view of sectional plane B-B illustrated in FIG. 13;
(22) FIG. 20 shows a side view of a first alternative embodiment of a cross member of a bridging device in a sectional view; and
(23) FIG. 21 shows a side view of a second alternative embodiment of a cross member of a bridging device.
(24) In the figures the same reference symbols are used for similar parts.
DETAILED DESCRIPTION
(25) In FIG. 1 to FIG. 7 a bridging device in center girder construction according to a first embodiment is illustrated. Bridging device 1, in an installation position, is arranged in a building joint 2 between two building components 3, 4. In the present case, bridging device 1 has two pairs of cross members 5, 6 bridging the building joint 2, cf. also FIG. 7. These cross members 5, 6 each have two cross member segments 7, 8 that are arranged along a longitudinal axis 9 of the cross members 5, 6 and that are arranged displaceable relative to each other toward the longitudinal axis 9, so that the length of cross members 5, 6 can be changed.
(26) Here, one cross member segment each is formed as a guiding segment 7 and the other cross member segment as a rodding segment 8, wherein the guiding segment 7 guides the rodding segment 8 toward the longitudinal axis 9 of cross members 5, 6. Guiding segment 7 is formed as box section tubing, wherein the rodding segment 8 has a corresponding design and is supported such to be displaceable into the guiding segment 7. In the present case, the rodding segments 8 are substantially inserted into the guiding segments 7, so that the cross members 5, 6 have a relatively small length. FIG. 1 shows a first pair of cross members 5, 6 of the bridging device 1 in a retracted state. The two adjacent cross members 5, 6 in a plan view are arranged substantially spaced parallel and opposite to each other. Here, center girders 12 are indicated according to the broken lines, cf. FIG. 2.
(27) FIG. 2 shows that the bridging device 1 according to the first embodiment also has two edge girders 10, 11 that each are arranged on building components 3, 4 on the building. Between the edge girders 10, 11 and on the two pairs of cross members 5, 6 bridging the building joint 2 in the present case four center girders 12 are arranged. For that, between center girder 12 and guiding segments 7 on cross members 5, 6 two center girder bearings 13 each for two of the four center girders 12 each are arranged. The other two center girders 12 are not arranged on the cross member 5. At lateral ends 14, 15 of cross members 5, 6 the bridging device 1 has one cross member bearing 16, 17 each for bearing cross members 5, 6 on the respective building component 3, 4. Here, these cross member bearings 16, 17 each are arranged in cross member boxes on the respective building component 3, 4.
(28) In comparing FIGS. 2 and 3, that each illustrate cross members 5, 6 of the first pair of cross members 5, 6 of the bridging device 1 in detail, also the parallel spaced and opposite arrangement is apparent. While with the first cross member 5 illustrated in FIG. 2 the guiding segment 7 and the two center girder bearings 13 are arranged to the left and the rodding segment 8 is arranged to the right, with the second cross member 6 that is shown in FIG. 3 it is the other way.
(29) FIG. 4 shows the bridging device 1 according to the first embodiment with the building joint 2 open, i.e. in a wide-open position. Cross member segments 7, 8 are displaced such that cross members 5, 6 have a relatively large length. For that, rodding segments 8 are substantially pushed out of the guiding segments 7. That is, in other words, bridging device 1 is extended. The position of the center girders 12 is indicated by means of broken lines.
(30) FIG. 5 and FIG. 6 show that center girders 12 in this state are uniformly spaced relative to each other and to the edge girders 10, 11. For that, springs not illustrated in detail here are arranged between the edge girders 10, 11 and the center girders 12 as a control device for controlling the distances. As is apparent from FIGS. 5 and 6 the cross members 5, 6 and cross member segments 7, 8 and the controlling means are configured such that the center girders 12 also with extended cross members 5, 6 with rodding segments 8 that are substantially pushed out of the guiding segments 7 are exclusively arranged on the guiding segments 7. In this way, the upper surfaces 18 of the center girders 12 always are oriented flush with each other and also flush with the upper surfaces 19 of the edge girders 10, 11.
(31) FIG. 7 shows a plan view of a retracted bridging device 1 according to the first embodiment as a whole. Bridging device 1 has two pairs of parallel spaced and opposite cross members 5, 6 according to FIG. 1. Here, two of the four center girders 12 each are arranged on the respectively identically formed and identically oriented cross members 5, 6 of the cross member pairs. Also here, center girders 12 are indicated by means of broken lines. The two left-handed center girders 12 each are arranged on two spaced cross members 5 formed according to FIG. 2, cf. FIGS. 2, 5, and 7. The opposite cross member 6 arranged in-between is not touched by the two left-handed center girders 12. The two right-handed center girders 12 each are arranged on two spaced cross members 6 formed according to FIG. 3, cf. FIGS. 3, 6, and 7. The opposite cross member 5 arranged in-between is not touched by the two left-handed center girders 12. All center girders 12 are exclusively arranged on the guiding segments 7 of the cross members 5, 6. If now the bridging device is extended, the center girders 12 arranged on respective two spaced guiding segments 7 bridge an inserted rodding segment 8 of an opposite cross member 5, 6. By the alternating orientation of the cross members 5, 6 a balanced load of the bridging devices 1 and a uniform distribution of the center girders 12 are achieved, even though the center girders 12 are exclusively arranged on the guiding segments 7. The initially described problems due to the height offset of the cross member segments 7, 8 are avoided.
(32) In den FIGS. 8 to 12 a bridging device 1 according to a second embodiment is illustrated. FIG. 8 shows a first of the two cross members 5, 6 of the bridging device and that said first cross member 5 has three cross member segments 7, 8 and is obliquely arranged in the building joint 2. Cross member 5 represents a pivoting cross member. A central guiding segment 7 is formed as a box section tubing, wherein two corresponding rodding segments 8 project from the open front sides 20 of the central cross member segment 7 and are displaceable supported therein. FIG. 8 shows a retracted bridging device and cross member 5, respectively. Center girders 12 are only indicated by means of broken lines.
(33) FIG. 9 shows that in the bridging device 1 according to the second embodiment four center girder bearings 13 for arranging the center girders 12 on the central guiding segment 7 are arranged. When the building gap is opened the cross member 5 pivots. Center girders 13 are formed such that they allow a rotational motion of the cross members 5 below the center girders 12. At the projecting ends 14, 15 of the rodding segments 8 each a cross member bearing 17 for bearing the cross member 5 on the respective building components 3, 4 is arranged. These cross member bearings 17 are configured such that cross member 5 can rotate under the center girders 12. Also upon pivoting the center girders 12 of cross member 5 remain on the central guiding segment 7. Moreover, a uniform distance between the center girders 12 is maintained. For that, cross member 5 can be formed as a pivoting cross member control device or can have springs.
(34) FIG. 10 shows the bridging device according to the second embodiment, wherein the building joint 2 is enlarged or opened, respectively, by motions of the building components 3, 4. In the enlarged building joint 2 cross member 5 is pivoted, moreover the two rodding segments 8 are pushed further out of the central guiding segment 7, so that cross member 5 has an increased length. That is, bridging device 1 is extended. The position of the center girders 12 is indicated by means of broken lines, cf. FIG. 11.
(35) FIG. 11 shows that the four center girders 12 are arranged uniformly spaced relative to each other and to the edge girders 10, 11. Cross member 5 is formed and obliquely arranged in the building joint 2 such that the center girders 12 and the center girders 13 do not change from one cross member segment 7, 8 to the other. In order to further secure the center girders 12, the center girder bearing 13 or a cross member segment 7, 8 can have at least one abutment 27.
(36) FIG. 12 shows a plan view of a retracted bridging device 1 according to the second embodiment as a whole. Bridging device 1, in addition to the first cross member 5 illustrated in FIG. 11, also has a further second cross member 6. This is spaced from the first one and differs from the first in that it is arranged opposite. In this way, a movement of the bridging device 1 transversally to the building components 3, 4 is avoided despite the oblique arrangement of the cross members 5, 6. Center girders 12 are indicated by broken lines.
(37) FIGS. 13 to 17 show a bridging device 1 according to a third embodiment. This one differs from the second embodiment in that it has two cross members 5, 6 each having two outer guiding segments 7 that in the plan view are formed as U-shaped clamps and additionally a central rodding segment 8. Said rodding segment 8 has a corresponding double TT girder design. The first cross member 5 of the bridging device is illustrated in FIG. 13. Here, the center girders 12 are indicated by means of broken lines.
(38) Two center girder bearings 13 are arranged on the central rodding segment 8. A U-shaped center girder bearing 21 is arranged on each of the two outer cross member segments 7. In this way, four center girders 12 are displaceably supported on the first cross member 5.
(39) FIG. 14 shows that the U-shaped center girder bearings 21 to a certain extend bridge the central cross member segment 8. That's why said center girder bearing 21 can remain arranged on the guiding segment 7 even though it should change from one cross member segment 7, 8 to the next. Cross member bearings 16 are arranged at external ends 14, 15 of the cross member 5 that allow a rotational motion of the cross member 5. If now said cross member 5 is pivoted a uniform distance between the center girders 12 is maintained. For that, cross member 5 can be formed as a pivoting cross member control device or can have springs. It is also possible to perpendicularly arrange cross member 5 in the building joint 2.
(40) As shown in FIG. 13 and FIG. 14, in case of a relatively small and closed building joint 2, respectively, the outer cross member segments 7 of the first cross member 5 of the bridging device 1 are pushed to each other and laterally surround the central cross member segment 8. In this way, cross member 5 has a relatively small longitudinal extension that substantially results from the sum of the lengths of the outer cross member segments 7. Bridging device 1 is retracted.
(41) FIGS. 15 and 16 show the bridging device 1 according to the third embodiment in the open state. In case of the open building joint 2, cross member 5 is pivoted. Furthermore, the longitudinal extension of cross member 5 is increased in that the central rodding segment 8 is substantially pushed out of the two outer guiding segments 7. Bridging device 1 is extended. In FIG. 15, center girders 12 are indicated by broken lines.
(42) It is apparent from FIG. 16 that center girders 12 are uniformly spaced relative to each other and relative to the edge girders 10, 11. By the differently formed center girder bearings 13, 21 the center girders 12 both above the guiding segments 7 and the central rodding segment 8 are supported at the same height. Center girder bearings 21 that are arranged on the two outer center girders 12 are formed such that respective center girder bearing 21 only rests on one assigned guiding segment 7 and does not touch the adjacent central rodding segment 8. For that, these center girder bearings 12 preferably have a U-shaped design. These center girder bearings 21 allow that the assigned center girders 12 can be moved back and forth on cross member 5 at least partially between the cross member segments 7, 8, cf. FIG. 14.
(43) FIG. 17 shows a plan view of a retracted bridging device 1 according to the third embodiment as a whole. Bridging device 1, in addition to the first cross member 5 illustrated in FIG. 13, also has a further second spaced cross member 6. This differs from the first one only in that it is arranged opposite. An unwanted transverse motion of the bridging device 1 to the building components 3, 4 is avoided by the opposite arrangement of the cross members 5, 6. Here, center girders 12 are indicated by means of broken lines.
(44) FIG. 18 shows in detail how a center girder 12 is supported on a guiding segment 7 of the first cross member 5 according to the third embodiment. So, a U-shaped center girder bearing 21 is arranged between the center girder 12 and the guiding segment 7. The U-shaped center girder bearing 21 is formed such that it bridges a segment area 22 of a rodding segment 8 enclosed into the guiding segment 7 that projects beyond the upper surface of the guiding segment 7 in a non-contacting manner.
(45) FIG. 19 shows how a center girder 12 is supported on a central rodding segment 8 of the first cross member 5 according to the third embodiment. For that, a center girder bearing 13 arranged in-between is arranged between the center girder 12 and the guiding segment 8.
(46) FIGS. 20 and 21 show variants of cross member 5. Here, FIG. 20 shows a first variant of cross member 5 that differs from the first cross member 5 of the third embodiment of the bridging device in that guiding segment(s) 7 are formed correspondingly with respect to the rodding segment 8 such that the upper surfaces 23, 24 of the various cross member segments 7, 8 of cross member 5 are oriented flush with each other. In this way, a height offset is prevented. For bearing the center girders 12 on the various cross member segments 7, 8 one center girder bearing 13 each is arranged between the cross member 5 and the center girder 12. Cross member 5 allows a displaceable bearing of the center girders 12 without different center girder bearings both on a guiding segment 7 as well as on a rodding segment 8.
(47) FIG. 21 shows a further variant of cross member 5. This is formed identical to the cross members 5, 6 of the first and second embodiment of the bridging device 1. Moreover, rodding segment 8 has a tongue 25 that engages an upper groove 26 of the respective guiding segment 7 such that the upper surfaces 23, 24 of the various cross member segments 7, 8 of cross member 5 are oriented flush with each other. Between the center girder 12 and cross member 5 a center girder bearing 13 is arranged. Said alternative also allows a displaceable bearing of the center girders 12 without different center girder bearings both on a guiding segment 7 as well as on a rodding segment 8.
REFERENCE NUMBERS
(48) bridging device 1 building joint 2 building component 3 building component 4 cross member 5 cross member 6 guiding segment 7 rodding segment 8 longitudinal axis 9 edge girder 10 edge girder 11 center girder 12 center girder bearing 13 end 14 end 15 cross member bearing 16 cross member bearing 17 upper surface 18 upper surface 19 front side 20 center girder bearing 21 segment area 22 upper surface 23 upper surface 24 tongue 25 groove 26
