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 fastened 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 a bridge, comprising: a cornice formwork support device, a formwork element, preferably an outer formwork element, which is supported by the cornice clamps.

[0004] EP 4 101 985 describes such a cornice formwork, which can be used to create a cornice cap on a bridge. In the construction of concrete bridges, a pier structure is provided with a bridge superstructure. The bridge superstructure usually has a cantilever slab that projects laterally beyond the pier structure. The cornice cap is concreted onto the laterally projecting edges of the cantilever slab. To construct the cornice cap, the space to be occupied by the cornice cap is enclosed with formwork elements consisting of an inner shield, an outer shield, and a base shield. The formwork elements are carried by a support device, which is suspended from the underside of the cantilever slab, the so-called bridge soffit. For this purpose, the support device has an arrangement of suspension heads, which 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 anchoring points where the suspension heads are anchored in the cantilever, and support points where the suspension heads are supported on the underside of the cantilever. Thus, the suspension head forms a tension point at the anchoring point and a compression point at the support point. From a static point of view, it is advantageous if the distance between the tension and compression points is 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 of the disadvantages of the prior art. The invention preferably aims to enable the suspension of the cornice formwork with different cantilever geometries with the best possible static properties.

[0006] This object is achieved 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 can be connected to each other in at least two mounting positions for adjusting the length of the suspension head.

[0008] In use, the suspension head is attached to the underside of the cantilever arm, in the case of a bridge to the so-called bridge underside. The longitudinal direction of the suspension head preferably extends substantially horizontally and preferably substantially perpendicular to the projecting longitudinal edge of the cantilever arm, which is preferably designed as a cantilever plate. Advantageously, the length of the suspension head can be varied by selectively arranging the anchoring and pressure parts in the first or second mounting position. In the first mounting position, the suspension head has a shorter length, i.e. extension in the longitudinal direction of the suspension head, than in the second mounting position. Thus, the distance between the anchoring point, with which the suspension head is anchored in the cantilever arm, and the pressure point, with which the suspension head is supported on the underside of the cantilever arm, can be varied.This allows the lever arm between the anchoring point, which acts as the tension point, and the compression point of the suspension head, which acts as the pressure point, to be lengthened or shortened depending on the design of the cantilever. This allows optimal use of the cantilever's overhang. With a wider cantilever, for example on a motorway bridge, the suspension head can be arranged in the second mounting position to maximize the distance between the tension point and the pressure point. With a narrower cantilever, for example on a country road bridge, the suspension head can be arranged in the first mounting position so that the suspension head finds space on the underside of the cantilever. This has the advantage that the suspension device is suspended from the cantilever with the optimal lever arm for each bridge cantilever. Another 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 adjusting the length 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, preferably also a fourth mounting position, wherein each mounting position corresponds 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 can be telescoped relative to the anchoring part. Thus, the anchoring and pressure parts are designed as telescopic elements. By telescoping the pressure part relative to the anchoring part, the length of the suspension head can be changed. The pressure part is fixed to the anchoring part in the desired mounting position.

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

[0012] For reversibly, i.e. repeatedly and damage-free, detachable connection of the pressure part to the anchoring part in the desired mounting position, the pressure part and the anchoring part in a preferred embodiment have corresponding fastening openings, 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 are connected to one another via the bolt.

[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 one another 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, to secure it against tilting in the respective mounting position.

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

[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 fastening opening is secured against slipping out of the fastening openings by a locking pin in a preferred embodiment.

[0016] In order to enable precise adjustment, in a preferred embodiment the anchoring part has two holding flanges, between which a connecting section of the pressure part is arranged. The holding flanges are preferably arranged substantially vertically. Preferably, the holding flanges each have at least one fastening opening, preferably each a plurality of fastening openings. Accordingly, the connecting section of the pressure part has at least one fastening opening, preferably a plurality of fastening openings. Preferably, the connecting section of the pressure part is arranged laterally in a substantially precisely fitting manner between the two holding flanges of the anchoring part. The connecting section is preferably formed by a shaped part, in particular a hollow shaped part, with a closed cross-section, preferably with a substantially rectangular cross-section, in particular with rounded corners.By shifting the connecting section of the pressure part relative to the anchoring part to different extents, different pairs of fastening openings on the pressure or anchoring part can be aligned and provided with the bolt so that the suspension head is arranged in the desired mounting position.

[0017] In a preferred embodiment, the retaining flanges of the anchoring part are connected to one another, preferably at their upper end faces, via a stiffening element, preferably a stiffening plate. This design ensures that the opposing fastening openings of the pressure or anchoring part are aligned for the insertion of the bolt. Advantageously, the stiffening element can prevent the retaining flanges from being bent out of their preferably parallel arrangement, which would no longer ensure the aligned arrangement of the fastening openings.

[0018] Preferably, but not necessarily, the retaining flanges are integrally connected to an anchoring section of the anchoring part. The anchoring point of the anchoring part 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 support, to which the cornice support is mounted. The support element, preferably the upper end of the support element, 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 the one hand to the connecting lug of the pressure part and on the other hand to the support element. The connecting strut is preferably designed as a diagonal strut, which is arranged at an angle to the suspension head and the support element.

[0021] In a preferred embodiment, a work platform support is connected to the support element, preferably below the cornice support. The work platform support preferably extends substantially perpendicular to the support element and / or substantially horizontally.

[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 by at least 10 cm, preferably by at least 15 cm, for example by substantially 20 cm. Depending on the design, the length of the suspension head can be adjustable in individual steps or essentially continuously.

[0023] In a preferred embodiment, the cornice formwork device comprises a base formwork element and / or an outer formwork element and / or an inner formwork element. The outer formwork element can preferably be positioned using the cornice clamp. The cornice clamp is preferably arranged on the cornice support so that it can be adjusted horizontally. The cornice clamp is preferably supported on the back of the cornice support by means of diagonal support struts.

[0024] The invention is further explained below with reference to an embodiment shown 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. 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 the line VI-VI in Fig. 5 . Fig. 7 shows a further 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 assembly 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 assembly position, in which the suspension head has the second longest length. Fig. 10 shows a Fig. 5 , Fig. 8 and Fig. 9 Corresponding side view of the suspension head according to the invention in a fourth assembly position, in which the suspension head is at its longest. Fig. 11 shows a perspective view of the suspension head.

[0025] Fig. 1 and Fig. 2 show a cornice formwork 1, which is attached to a cantilever 2, i.e., to a preferably substantially horizontally extending, laterally freely projecting edge region, here a schematically illustrated bridge 3. With the aid of the cornice formwork 1, a cornice cap 2A can be concreted onto the cantilever 2.

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

[0027] The cornice formwork 1 has a cornice formwork support device 4 with a plurality, in particular a multiplicity, of preferably identical cornice formwork support units 5, which are fastened at horizontal distances from one another in the longitudinal direction of the cantilever arm 2. The cornice formwork support units 5 each have a suspension device 6 with a suspension head 7, described in detail below, which is fastened to the underside of the cantilever arm 2. The suspension device 6 also has a support element 8, in the example shown a vertical beam extending essentially in the vertical direction. The upper end of the support element 8 is mounted on the front end (i.e., facing the projecting edge region of the cantilever arm 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 other end of the connecting strut 9 is connected to the lower end (i.e., facing away from the underside of the cantilever arm 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 support 10 is reversibly and detachably mounted on the support element 8. The cornice support 10, designed as a support bracket, has a horizontal support 11 with a first longitudinal end and a second longitudinal end. The horizontal support 11 is mounted to the vertical support with its first longitudinal end. The cornice support 10 also has a diagonal brace 12 for supporting the horizontal support 11 from below. The cornice support 10 is connected to the cornice support 10 in a height and inclination adjustable manner. Thus, the horizontal support 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 also each have a working platform support 13, which is connected to the support element 8 below the cornice support 10, here to the lower end of the support element 8. A deck 14 with a substantially horizontal working surface is arranged on the working platform supports 13. A railing 15 can be provided on the rear longitudinal edge of the working platform supports 13, i.e., on the longitudinal side facing away from the cantilever arm 2.

[0030] The cornice formwork support units 5 each have a cornice clamp 16, which is mounted on the respective cornice support 8. The horizontal supports 11 support a cornice formwork device with a first formwork device 17 and a second formwork device 18, with which, in the embodiment shown, a cornice cap 19 can be produced on the cornice 2. The first formwork device 17 can have a bottom formwork element, with which, in the embodiment shown, a substantially horizontal formwork surface is formed. The second formwork device 18 can have an outer formwork element, with which, in the embodiment shown, a substantially vertical formwork surface is formed. The second formwork device 18 is positioned with the aid of the substantially vertical cornice clamps 16, which are arranged on the horizontal supports 11 of the cornice supports 10 and are adjustable in the horizontal direction.The cornice clamps 16 are supported at the rear by diagonal support struts 24 on the horizontal beams 11. The support struts 24 are telescopic, allowing the inclination of the cornice clamps 16 to 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 part 26 for anchoring inside the concrete body of the cantilever arm 2 and a pressure part 25 for support on the underside of the concrete body of the cantilever arm 2, without engaging the concrete body of the cantilever arm 2. The suspension head 7 is in the longitudinal direction 27 (cf. Fig. 4 ) elongated. The longitudinal direction 27 of the suspension head 7 runs essentially in a horizontal direction, essentially perpendicular to the longitudinal direction 28 (cf. Fig. 2 ) of the cantilever arm 2. The length of the suspension head 7, ie its extension in the longitudinal direction 27, is adjustable. To adjust the length of the suspension head 7, the anchoring part 26 and the pressure part 25 can be connected to one another in at least two mounting positions, preferably in at least three mounting positions, in the example shown in exactly four mounting positions. Fig. 1 bis 7 show the first mounting position, the Fig. 8 shows the second mounting position, the Fig. 9 shows the third mounting position and the Fig. 10 shows the fourth mounting position. In the various mounting positions, the suspension head 7 has different lengths. Before mounting on the cantilever arm 2, the pressure part 25 can be adjusted by telescoping relative to the anchoring part 26 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, optionally in one of at least two mounting positions. The pressure part 25 and the anchoring part 26 each have fastening openings 30 (cf. Fig. 6 ). Depending on the mounting position, different fastening openings 30 of the pressure part 25 and the anchoring part 26 are arranged in alignment. The bolt 29 is inserted through the aligned fastening openings 30 in order to connect the pressure part 25 to the anchoring part 26 in the desired mounting position. The bolt 29 is preferably a multiple bolt, in the example shown a double bolt, with several, in the example shown with exactly two, bolt elements 31. The bolt elements 31 are captively 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 with a locking pin 33 to prevent them from slipping out of the fastening openings 30.In addition, the multiple bolt is arranged captively on the suspension head 7 by means of a safety rope 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 holding flanges 35, which enclose a space in which a connecting section 36 of the pressure part 25 is arranged in a substantially precise fit, i.e. with at most a slight lateral play. Fastening openings 30 for the bolt 29 are provided on the holding flanges 35. Before the bolt 29 is arranged, the connecting section 36 of the pressure part 25 is arranged so as to be displaceable in the longitudinal direction 27 between the holding 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 fastening openings 30 aligned, the bolt 29 is inserted through the fastening openings 30. In the example shown, the holding flanges 35 of the anchoring part 26 are 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 ) are connected to each other. In the example shown, the stiffening element 37 is a stiffening plate which extends substantially horizontally on the upper side 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), 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 substantially 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 arm. Furthermore, a fastening wedge 41 is provided for fixing the anchoring device.

[0036] As from Fig. 5As can be seen, the pressure part 25 has a connecting lug 42 that projects downward 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 secured via a mounting bolt.

Claims

1. 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), characterized in that the anchoring part (26) and the pressure part (25) can be connected to one another in at least two mounting positions for adjusting the length of the suspension head (7).

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

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

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

5. Cornice formwork support unit (5) according to claim 4, characterized in that as a bolt (29) a multiple bolt, preferably a double bolt, with several, preferably two, bolt elements (31) is provided, 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 thatthe bolt (29), preferably the multiple bolt, is captively connected to the anchoring part (26) or to the pressure part (25) via a safety cable (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) by a locking pin (33).

8. Cornice formwork support unit (5) according to one of claims 1 to 7, characterized in that the anchoring part (26) has 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 retaining flanges (35) of the anchoring part (26) are connected to one another, preferably at their upper end faces, 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) has a support element (8), in particular a vertical support, on which the cornice support (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) has a connecting nose (42), wherein a connecting strut (9) is connected on the one hand to the connecting nose (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 support (13), preferably below the cornice support (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 at least 10 cm, preferably by at least 15 cm, for example by substantially 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 can be fastened 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).

Images