Cornice formwork support unit

Abstract

Cornice formwork support unit (5) for fastening to a cantilever arm (2), preferably a bridge (3), comprising: a suspension device (6) with a suspension head (7) for fastening to the cantilever arm (2), wherein the suspension head (7) has an anchoring part (26) for anchoring in the cantilever arm (2) and a pressure part (25) for support on the cantilever arm (2), a cornice support (10) which is mounted on the suspension device (6), a cornice clamp (16) for supporting a cornice formwork device, wherein the cornice clamp (16) is mounted on the cornice support (10), wherein the anchoring part (25) and the pressure part (26) can be connected to one another in at least two mounting positions for adjusting the length of the suspension head (7).

Description

[0001] The invention relates to a cornice formwork support unit for attachment to a cantilever, preferably to a bridge cantilever, comprising: a suspension device with a suspension head for attachment to the cantilever arm, wherein the suspension head has an anchoring part for anchoring in the cantilever arm and a pressure part for support on the cantilever arm, a cornice support which is mounted on the suspension device, a cornice clamp for supporting a cornice formwork device, wherein the cornice clamp is mounted on the cornice support.

[0002] Furthermore, the invention relates to a cornice formwork support device comprising: an arrangement of cornice formwork support units which can be attached at intervals along the cantilever arm, preferably the bridge cantilever arm.

[0003] Finally, the invention relates to a cornice formwork for producing a cornice cap on a cantilever, preferably of a bridge, comprising: a cornice formwork support device, a formwork element, preferably an external formwork element, which is supported by the cornice clamps.

[0004] Such a cornice formwork is known from EP 4 101 985, which can be used to construct a cornice cap on a bridge. In the construction of concrete bridges, a pier structure is fitted with a bridge superstructure. The bridge superstructure usually has a cantilever slab that projects laterally beyond the pier structure. The cornice cap is cast onto the laterally projecting edges of the cantilever slab. To construct the cornice cap, the space that the cornice cap is to occupy is enclosed with formwork elements consisting of an inner panel, an outer panel, and a bottom panel. The formwork elements are supported by a support device, which is suspended from the underside of the cantilever slab, the so-called soffit. For this purpose, the support device has an arrangement of suspension heads that are anchored to the underside of the cantilever slab.Vertical profiles are attached to the suspension heads, to which support brackets for the formwork elements are mounted. The suspension heads have anchor points where they are anchored to the cantilever arm, and support points where they are braced against the underside of the cantilever arm. Thus, the suspension head forms a tension point at the anchor point and a compression point at the support point. From a structural perspective, it is advantageous for the distance between the tension and compression points to be as large as possible. In practice, however, the problem arises that the cantilevers can have very different designs.

[0005] Against this background, the object of the present invention is to alleviate or eliminate at least some disadvantages of the prior art. The invention preferably aims to enable the suspension of cornice formwork with the best possible static properties for different cantilever geometries.

[0006] This problem is solved by a cornice formwork support unit according to claim 1, a cornice formwork support device according to claim 14, and a cornice formwork according to claim 15. Preferred embodiments of the invention are specified in the dependent claims.

[0007] According to the invention, the anchoring part and the pressure part for length adjustment of the suspension head can be connected to each other in at least two mounting positions.

[0008] In use, the suspension head is attached to the underside of the cantilever, in the case of a bridge, to the so-called bridge soffit. The longitudinal direction of the suspension head is preferably substantially horizontal and preferably substantially perpendicular to the projecting longitudinal edge of the cantilever, which is preferably designed as a cantilever plate. Advantageously, the length of the suspension head can be changed by selectively arranging the anchoring and compression elements in either the first or second mounting position. In the first mounting position, the suspension head has a shorter length, i.e., a shorter longitudinal extent, than in the second mounting position. Thus, the distance between the anchoring point, where the suspension head is secured in the cantilever, and the compression point, where the suspension head is supported on the underside of the cantilever, can be varied.This allows the lever arm between the anchor point (acting as the tension point) and the compression point of the suspension head to be lengthened or shortened, depending on the design of the cantilever. This enables optimal use of the cantilever's projection. For a wider cantilever, such as a highway bridge, the suspension head can be positioned in the second mounting position to maximize the distance between the tension and compression points. For a narrower cantilever, such as a rural road bridge, the suspension head can be positioned in the first mounting position, placing it on the underside of the cantilever. This has the advantage that the suspension device is mounted on the cantilever with an optimal lever arm for every bridge cantilever. A further advantage is that the same suspension head can be used for different cantilevers, preferably for different bridge cantilevers.

[0009] In a preferred embodiment, the anchoring part and the pressure part for length adjustment of the suspension head can be connected to each other in at least three mounting positions, preferably in at least four mounting positions. Thus, in this embodiment, the suspension head has, in addition to the first and second mounting positions described above, at least a third mounting position, and preferably also a fourth mounting position, each mounting position corresponding to a different distance between the anchoring point and the pressure point of the suspension head.

[0010] For length adjustment, it is advantageous if the pressure part is telescopic relative to the anchoring part. Therefore, both the anchoring and pressure parts are designed as telescopic elements. By extending the pressure part relative to the anchoring part, the length of the suspension head can be changed. The pressure part is then fixed to the anchoring part in the desired mounting position.

[0011] In a preferred embodiment, a bolt is provided to connect the pressure part to the anchoring part in one of at least two mounting positions in order to fix the pressure part to the anchoring part in the respective mounting position.

[0012] To be reversible, d.h. In a preferred embodiment, the pressure part and the anchoring part have corresponding fastening openings, allowing for repeated and damage-free releasable connection of the pressure part to the anchoring part in the desired mounting position, wherein in the at least two mounting positions at least one pair of fastening openings of the anchoring part and the pressure part are arranged in alignment and connected to each other via the bolts.

[0013] In a preferred embodiment, the bolt is a multiple bolt, preferably a double bolt, with several, preferably two, bolt elements, which are connected to each other via a connecting part, preferably a connecting plate. The arrangement of the multiple bolt allows, on the one hand, the length of the suspension head to be determined and, on the other hand, provides a safeguard against tilting in the respective mounting position.

[0014] To ensure the availability of the bolt for securing in the respective mounting position, the bolt, preferably the multiple bolt, is in a preferred embodiment connected to the anchoring part or to the pressure part in a captive manner via a securing cable.

[0015] In order to ensure the connection of the pressure part with the anchoring part in the respective mounting position, the end of the bolt protruding through the mounting opening is secured against slipping out of the mounting openings by means of a locking pin in a preferred embodiment.

[0016] To enable precise adjustment, the anchoring element in a preferred embodiment has two retaining flanges between which a connecting section of the pressure element is arranged. The retaining flanges are preferably arranged substantially vertically. Preferably, each retaining flange has at least one mounting opening, and more preferably, several mounting openings. Correspondingly, the connecting section of the pressure element has at least one mounting opening, and more preferably, several mounting openings. Preferably, the connecting section of the pressure element is arranged laterally, essentially fitting precisely between the two retaining flanges of the anchoring element. The connecting section is preferably formed by a molded part, in particular a hollow molded part, with a closed cross-section, preferably with a substantially rectangular cross-section, and especially with rounded corners.By shifting the connecting section of the pressure part to different degrees relative to the anchoring part, various pairs of mounting openings on the pressure or anchoring part can be aligned and fitted with the bolt, so that the suspension head is positioned in the desired mounting position.

[0017] In a preferred embodiment, the retaining flanges of the anchoring part are connected to each other, preferably at their upper end faces, via a stiffening element, preferably a stiffening plate. This design ensures that the opposing mounting openings of the pressure or anchoring part are aligned for the insertion of the bolt. Advantageously, the stiffening element prevents the retaining flanges from being bent out of their preferably parallel arrangement relative to each other, which would compromise the alignment of the mounting openings.

[0018] Preferably, but not necessarily, the retaining flanges are integrally connected to an anchoring section of the anchoring element. The anchoring point of the anchoring element preferably has a receiving opening, in particular a receiving opening open on one side, for arranging, in particular for inserting, an anchoring device for anchoring in the concrete of the cantilever.

[0019] In a preferred embodiment, the suspension device comprises a support element, in particular a vertical beam, on which the cornice beam is mounted, wherein the support element, preferably its upper end, is mounted on the anchoring part, preferably at the front end of the anchoring part. The front end of the anchoring part faces the projecting edge of the cantilever arm.

[0020] For load transfer, it is advantageous if the pressure part of the suspension head has a connecting lug, preferably with a mounting opening, wherein a connecting strut is connected on one side to the connecting lug of the pressure part and on the other side to the support element. Preferably, the connecting strut is designed as a diagonal strut, which is arranged at an angle to the suspension head and to the support element.

[0021] In a preferred embodiment, a work platform support, preferably located below the cornice support, is connected to the supporting element. Preferably, the work platform support extends substantially perpendicular to the supporting element and / or substantially in a horizontal direction.

[0022] In a preferred embodiment, the length of the suspension head, and thus in particular the distance between the anchoring point and the pressure point of the suspension head, is adjustable by at least 5 cm or at least 10 cm, preferably by at least 15 cm, for example by substantially 20 cm. Depending on the embodiment, the length of the suspension head can be adjustable in individual steps or substantially continuously.

[0023] In a preferred embodiment, the cornice formwork system comprises a base formwork element and / or an outer formwork element and / or an inner formwork element. The outer formwork element is preferably positionable by means of the cornice clamp. The cornice clamp is preferably arranged on the cornice beam so as to be adjustable in the horizontal direction. The cornice clamp is preferably supported on the rear side of the cornice beam by means of diagonal support struts.

[0024] The invention is further explained below with reference to an embodiment illustrated in the drawings. Fig. 1 shows a side view of a cornice formwork according to the invention, in which a suspension head can be mounted in several mounting positions with different lengths on the underside of a bridge cantilever arm. Fig. 2 shows a 3D view of the cornice formwork of the Fig. 1 . Fig. 3 shows a 3D view of the suspension head according to the invention. Fig. 4 shows a top view of the suspension head according to the invention. Fig. 5 shows a side view of the suspension head according to the invention in a first assembly position in which the suspension head has the shortest length. Fig. 6 shows a sectional view of the suspension head according to the invention along line VI-VI in Fig. 5 . Fig. 7 shows another side view of the suspension head according to the invention. Fig. 8 shows a Fig. 5 corresponding side view of the suspension head according to the invention in a second mounting position in which the suspension head has the second shortest length. Fig. 9 shows a Fig. 5 and Fig. 8 corresponding side view of the suspension head according to the invention in a third mounting position, in which the suspension head has the second longest length. Fig. 10 shows a Fig. 5 , Fig. 8 and Fig. 9 A corresponding side view of the suspension head according to the invention in a fourth mounting position, in which the suspension head is longest. Fig. 11 shows a diagrammatic view of the suspension head.

[0025] Fig. 1 and Fig. 2 Figure 1 shows a cornice formwork 1, which is attached to a cantilever 2, i.e., to a laterally projecting edge area, preferably extending substantially in a horizontal direction, here of a schematically depicted bridge 3. A cornice cap 2A can be cast onto the cantilever 2 using the cornice formwork 1.

[0026] For the purposes of this disclosure, location and direction references such as "above", "below", "vertical", "horizontal" refer to the intended assembly state of the cornice formwork 1 on the bridge 3.

[0027] The cornice formwork 1 comprises a cornice formwork support device 4 with a plurality, in particular a multiplicity, of preferably identical cornice formwork support units 5, which are attached at horizontal intervals from one another in the longitudinal direction of the cantilever 2. Each cornice formwork support unit 5 has a suspension device 6 with a suspension head 7, described in detail below, which is attached to the underside of the cantilever 2. The suspension device 6 also has a support element 8, in the example shown a vertical beam extending substantially in a vertical direction. The upper end of the support element 8 is mounted at the front end (i.e., facing the projecting edge region of the cantilever 2) of the suspension head 7. Finally, the suspension device 6 has a connecting strut 9. One end of the connecting strut 9 is connected to the rear end (i.e.,The end of the suspension head 7 (facing away from the projecting edge region of the cantilever 2) and the other end of the connecting strut 9 are connected to the lower end (i.e., facing away from the underside of the cantilever 2) of the support element 8. Thus, the connecting strut 9 is arranged as a diagonal compression strut between the vertical beam and the suspension head 7.

[0028] A cornice beam 10 is reversibly and detachably mounted on the supporting element 8. The cornice beam 10, designed as a support bracket, has a horizontal beam 11 with a first longitudinal end and a second longitudinal end. The horizontal beam 11 is mounted to the vertical beam at its first longitudinal end. The cornice beam 10 also has a diagonal brace 12 for supporting the horizontal beam 11 from below. The cornice beam 10 is connected to the cornice beam 10 in a way that allows for adjustment in height and inclination. Thus, the horizontal beam 11 can be arranged not only in a horizontal position but also in a position inclined to the horizontal.

[0029] The cornice formwork support units 5 each also have a working platform beam 13, which is connected below the cornice beam 10 to the support element 8, specifically to the lower end of the support element 8. A decking 14 with a substantially horizontal working surface is arranged on the working platform beams 13. A railing 15 can be provided at the rear longitudinal edge of the working platform beams 13, i.e., on the longitudinal side facing away from the cantilever 2.

[0030] The cornice formwork support units 5 each have a cornice clamp 16, which is mounted on the respective cornice beam 8. The horizontal beams 11 support a cornice formwork system with a first formwork unit 17 and a second formwork unit 18, with which, in the illustrated embodiment, a cornice cap 19 can be produced on the cornice 2. The first formwork unit 17 can have a bottom formwork element, with which, in the illustrated embodiment, a substantially horizontal formwork surface is formed. The second formwork unit 18 can have an outer formwork element, with which, in the illustrated embodiment, a substantially vertical formwork surface is formed. The second formwork unit 18 is positioned with the aid of the substantially vertical cornice clamps 16, which are adjustable in the horizontal direction on the horizontal beams 11 of the cornice beams 10.The cornice clamps 16 are supported on the rear side by diagonal support struts 24 on the horizontal beams 11. The support struts 24 are telescopically adjustable so that the inclination of the cornice clamps 16 can be adjusted. Thus, the cornice clamps 16 can be arranged not only in a vertical position but also in a position inclined to the vertical. Furthermore, an internal formwork element can be provided.

[0031] As from Fig. 4 bis 10 As can be seen, the suspension head 7 has an anchoring element 26 for anchoring inside the concrete body of the cantilever 2 and a compression element 25 for support on the underside of the concrete body of the cantilever 2, without interpenetrating the concrete body of the cantilever 2. The suspension head 7 is longitudinally 27 (see figure). Fig. 4 ) elongated. The longitudinal direction 27 of the suspension head 7 runs essentially horizontally and essentially perpendicular to the longitudinal direction 28 (cf. Fig. 2 ) of the cantilever arm 2. The length of the suspension head 7, i.e., its extension in the longitudinal direction 27, is adjustable. For length adjustment of the suspension head 7, the anchoring part 26 and the pressure part 25 can be connected to each other in at least two mounting positions, preferably in at least three mounting positions, and in the example shown in exactly four mounting positions. Fig. 1 bis 7 show the first assembly position, which Fig. 8 The second mounting position shows the Fig. 9 shows the third assembly position and the Fig. 10 Figure 7 shows the fourth mounting position. The suspension head 7 has different lengths in the various mounting positions. Before mounting it on the cantilever arm 2, the pressure part 25 can be adjusted relative to the anchoring part 26 by telescoping and fixed in the desired mounting position, so that the suspension head 7 is at the desired length.

[0032] As from Fig. 4 bis 10 As can be seen, a bolt 29 is provided for connecting the pressure part 25 to the anchoring part 26 in at least two mounting positions. The pressure part 25 and the anchoring part 26 each have fastening openings 30 (see figure). Fig. 6 Depending on the mounting position, different mounting openings 30 of the pressure part 25 and the anchoring part 26 are aligned. The bolt 29 is inserted through the aligned mounting openings 30 to connect the pressure part 25 to the anchoring part 26 in the desired mounting position. Preferably, the bolt 29 is a multiple bolt, in the example shown a double bolt, with several, in the example shown exactly two, bolt elements 31. The bolt elements 31 are captive connected to one another. For this purpose, a connecting part 32, in the example shown a connecting plate, is provided, which connects one end of the bolt elements 31 to one another. The other ends of the bolt elements 31 protrude through the pressure part 25 and the anchoring part 26 and are secured against slipping out of the mounting openings 30 by a locking pin 33.Furthermore, the multiple bolt is irrevocably attached to the suspension head 7 by means of a safety cable 34, in the example shown on the anchoring part 26 of the suspension head 7.

[0033] As from Fig. 4 bis 10 As can be seen, the anchoring part 26 has two parallel retaining flanges 35 which enclose a gap in which a connecting section 36 of the pressure part 25 is arranged in a substantially snug fit, i.e., with at most a small lateral play. Each retaining flange 35 has mounting openings 30 for the bolt 29. Before the bolt 29 is positioned, the connecting section 36 of the pressure part 25 is arranged to be slidably positioned longitudinally 27 between the retaining flanges 35 of the anchoring part 26. In the example shown, the connecting section 36 is designed as a molded part with a closed, preferably substantially rectangular, cross-section. In the desired assembly position, with the matching mounting openings 30 aligned, the bolt 29 is inserted through the mounting openings 30. In the example shown, the retaining flanges 35 of the anchoring part 26 are attached at their upper (i.e.,the underside of the cantilever arm 2) end faces via a stiffening element 37 (cf. . Fig. 4 and Fig. 5 ) connected to each other. In the example shown, the stiffening element 37 is a stiffening plate which extends essentially horizontally along the top of the suspension head 7.

[0034] As from Fig. 4 and Fig. 5 As can be seen, a pressure plate 38 is provided on the upper side of the connecting section 36 of the pressure part 25, which is supported on the underside of the cantilever arm 2.

[0035] As from Fig. 1 bis 7 (first mounting position), Fig. 8 (second mounting position), Fig. 9 (third mounting position) and Fig. 10 (Fourth mounting position) shows that the pressure plate 38 of the pressure part 25 is spaced at different distances from an anchoring point 39 of the anchoring part 26 in the respective mounting positions. Depending on the design, the length of the suspension head 7, and thus the distance of the pressure part 25 from the anchoring point 39, can be adjusted by at least 10 cm, in particular by at least 15 cm, for example by essentially 20 cm. In the example shown, the anchoring point 39 has a laterally open receiving opening 40 for an anchoring device, preferably with a so-called cornice sleeve (not shown), for anchoring in the concrete of the cantilever. Furthermore, a fixing wedge 41 is provided for fixing the anchoring device.

[0036] As from Fig. 5As can be seen, the printed part 25 has a connecting lug 42 which projects downwards from the rear end of the connecting section 36. The connecting lug 42 has a mounting opening 43 to which one end of the connecting strut can be fastened via a mounting bolt.

Claims

1. Cornice formwork support unit (5) for attachment to a cantilever arm (2), preferably of a bridge (3), comprising: a suspension device (6) with a suspension head (7) for attachment to the cantilever arm (2), wherein the suspension head (7) respectively comprises an anchoring part (26) for anchoring in the cantilever arm (2) and a pressure part (25) for supporting on the cantilever arm (2), a cornice carrier (10), which is mounted on the suspension device (6), a cornice clamp (16) for supporting a cornice formwork device, wherein the cornice clamp (16) is mounted on the cornice carrier (10), characterized in that the anchoring part (26) and the pressure part (25) are connectable to one another for length adjustment of the suspension head (7) in at least two assembly positions.

2. Cornice formwork support unit (5) according to claim 1, characterized in that the pressure part (25) is telescopable relative to the anchoring part (26).

3. Cornice formwork support unit (5) according to claim 1 or 2, characterized in that a bolt (29) for connecting the pressure part (25) to the anchoring part (26) is optionally provided in one of the at least two assembly positions.

4. Cornice formwork support unit (5) according to claim 3, characterized in that the pressure part (25) and the anchoring part (26) comprise corresponding fastening openings (30), wherein in the at least two assembly positions in each case at least one pair of fastening openings (30) is arranged in alignment and connected to one another via the bolt (29).

5. Cornice formwork support unit (5) according to claim 4, characterized in that a multiple bolt, preferably a double bolt, with several, preferably with two, bolt elements (31) is provided as the bolt (29), which are connected to one another via a connecting part (32), preferably via a connecting plate.

6. Cornice formwork support unit (5) according to claim 4 or 5, characterized in that the bolt (29), preferably the multiple bolt, is connected in a captive manner to the anchoring part (26) or to the pressure part (25) via a securing rope (34).

7. Cornice formwork support unit (5) according to one of claims 4 to 6, characterized in that the end of the bolt (29) projecting through the fastening openings (30) is secured against slipping out of the fastening openings (30) via a securing split pin (33).

8. Cornice formwork support unit (5) according to one of claims 1 to 7, characterized in that the anchoring part (26) comprises two holding flanges (35), between which a connecting section (36) of the pressure part (25) is arranged.

9. Cornice formwork support unit (5) according to claim 8, characterized in that the holding flanges (35) of the anchoring part (26), preferably at their upper end faces, are connected to one another via a stiffening element (37), preferably via a stiffening plate.

10. Cornice formwork support unit (5) according to one of claims 1 to 9, characterized in that the suspension device (6) comprises a support element (8), in particular a vertical carrier, on which the cornice carrier (10) is mounted, wherein the support element (8), preferably the upper end of the support element (8), is mounted on the anchoring part (25), preferably at the front end of the anchoring part (26).

11. Cornice formwork support unit (5) according to one of claims 1 to 10, characterized in that the pressure part (25) comprises a connecting lug (42), wherein a connecting strut (9) is connected on the one hand to the connecting lug (42) of the pressure part (25) and on the other hand to the support element (8).

12. Cornice formwork support unit according to one of claims 1 to 11, characterized in that a working platform carrier (13), preferably below the cornice carrier (10), is connected to the support element (8).

13. Cornice formwork support unit (5) according to one of claims 1 to 12, characterized in that the length of the suspension head (7) is adjustable by at least 5 or by at least 10 cm, preferably by at least 15 cm, for example by essentially 20 cm.

14. Cornice formwork support device (4), comprising: an arrangement of cornice formwork support units (5) according to one of claims 1 to 13, which are attachable at intervals along the cantilever arm (2).

15. Cornice formwork (1), comprising: a cornice formwork support device (4) according to claim 14, a formwork element, which is supported by the cornice clamps (16).

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