GB2265655A

GB2265655A - Shuttering system

Info

Publication number: GB2265655A
Application number: GB9307020A
Authority: GB
Inventors: Gerhard Dingler
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-04-04
Filing date: 1993-04-02
Publication date: 1993-10-06
Anticipated expiration: 2013-04-02
Also published as: FR2689547A1; SE9301065L; SE9301065D0; FR2689547B1; ES2089935R; IT1262097B; ITUD930054A0; ITUD930054A1; DE4211299A1; ES2089935A2; DE4211299C2; GB9307020D0; NL9300535A; ATA61893A; AT410236B; BE1007922A3; GB2265655B; CZ56893A3; ES2089935B1

Abstract

An extruded profiled main beam (11) for a concreting formwork has a plate-like upper wall (16) which projects beyond the side walls (21, 22). The side walls thus set back provide room for dirt gutters (63, 64) on both sides, at the transition to suspension gutters (53, 54) for the connection of further beams (11). Any dirt (concrete milk) which drips down can thus be kept away from the suspension gutters more effectively. Moreover, the dirt gutters have a stepped gutter bottom (73, 74), so that dirt which has penetrated can nevertheless run off unimpeded. <IMAGE>

Description

226%1.5655 ImDrovements in or relating to shuttering systems The invention

relates to shuttering systems in general and, particulary although not exclusively, to a profiled main beam according to the precharacterising clause of the main claim, especially for the ceiling formwork in the ceiling/beam/ formwork system. Such a profiled main beam is known, for example, from the titanium high-strength formwork system of Messrs Ischebeck. It is also partly known from the associated Ischebeck prospectus which bears the imprint "W 18.1/785/5.11. It is also known in German Patent 3,147,081 from the top of Figure 1, from the top right of Figure 2, from Figure 3 and from centre right of Figure 4.

The object of the invention is to improve such a profiled main beam in many ways and, furthermore, also provide a system shuttering panel and a secondary beam which can be used with such a profiled main beam. Profiled secondary beams are indicated in the abovementioned prospectus and have previously been used by Messrs Ischebeck.

The object of the invention is achieved by means of the features evident from the characterising clause of the main claim.

In the drawing:

2 Figure 1 Figure 2 is Figure 3 Figure 4 Figure 5 shows a truncated perspective view of a profiled main beam shown to scale, shows a vertical cross-section through Figure 1, but with suspended additional parts, in a representation to scale, shows the truncated main beam in section, with a suspended secondary beam, in one position, shows a representation similar to that of Figure 3, but with the secondary beam in its other position, and shows a cross-section through the secondary beam.

The Figures are to scale, particular attention being drawn to this fact. The horizontal upper wall of the main beam is 10 cm wide, and therefore all other dimensions can be derived from this.

A profiled main beam 11 comprises an aluminium extruded profile 12 which has the same cross-section throughout. It is 2 m long. Welded to each of the end faces is a respective closing-plate device 13 which likewise consists of an extruded aluminium profile of a cross-section identical throughout. The extruded profile 12 is in one piece and is symmetrical in respect of its mid-plane 14. At the top, it has an upper wall 16, the top side 17 of is 3 which is perpendicular to the mid-plane 14. Stop faces 18, 19 extending parallel to the mid-plane 14 are provided on the right.and left. The upper wall 16 is approximately 5 mm thick. The stop faces 18, 19 are also correspondingly high and thus, under operating conditions, produce clean and straight stop faces 18, 19 which are difficult to destroy.

The side walls 21, 22 start at a point offset approximately two thirds to a half inwards. These have a small distance between them at the top, then increasingly widen conically and approach one another downwards from their widest point 23, 24. When viewed in section, there are approximately two truncated cones placed one on the other. The part walls 26, 27 project from the underside 28 of the upper wall 16 in a manner inclined outwards a little. There follows a further part wall 29, 31 which extends downwards at a larger angle shown. The waist obtained thereby is connected by means of a transverse wall 32 which is perpendicular to the mid-plane 14. A second transverse wall 33 connects the points 23, 24 at somewhat less than half the height of the extruded profile 12. From there, the side walls 21, 22 narrow in the form of a comparatively acutely tapering part wall 34, 36 which are connected to one another by means of a 4 third transverse wall 37 perpendicular to the midplane 14. The transverse wall 37 is located at a height at which two supporting walls 38, 39 extending obliquely upwards to the left and right respectively enter. The lower end of the part walls 34, 36 is connected by means of a fourth relatively thick transverse wall 41 perpendicular to the midplane 14. This transverse wall 41 cooperates with three hollow chambers 42, 43, 44, the cross-section of which is thicker than that of the side walls 21, 22, but not as thick as the upper wall 16.

All three hollow chambers 42, 43, 44 define, on their underside, a plane 46 which is perpendicular to the mid-plane 14. As seen over the width, the outer hollow chambers 42, 44 or their walls are approximately as wide as the points 23, 24 are apart from one another. Their walls have, at the top, a large radius 47, 48 which is round for easy handling and, downwards, smaller radii 50, 55 which, however, are still round for easy handling. The hollow chambers 42, 44 therefore form lower stable beads extending longitudinally.

The hollow chamber 43 has the angular crosssection shown, is perpendicular to the mid-plane 14 and possesses downwards a longitudinal slot 49. Through this can pass the shank of a hammer-head is screw, the hammer wing of which then rests, in the tightened state, on the respective ledge 51, 52 which is at a considerable distance from the plane 46, so that a quantity of aluminium having a high load-bearing capacity is located between them.

Two suspension gutters 53, 54 are arranged, symmetrically as mentioned above, approximately at a height between the transverse walls 33, 37. As seen over the width, they project at least partially beyond the stop faces 18, 19. To connect these suspension gutters 53, 54 to the body formed from the side walls and transverse walls, there are the supporting walls 38, 39 which extend away upwards to the left and right approximately at an angle of 600 relative to the mid-plane 14 and which join with the inner lower corner region 56, 57 of the suspension gutters 53, 54 to form an accumulation of material. The supporting walls 38, 39 are somewhat thicker than the side walls 21, 22, so that they can absorb pressure and do not bulge out. The various transverse walls 32, 33, 37 and 41 also prevent a bulging out.

There extend upwards and outwards at low inclination from the points 23, 24 wings 58, 59 which are comparatively short and therefore bendresistant, join with the upper inner corner region 61, 62 of 6 the suspension gutters 53, 54 to form an accumulation of material and, together with the lowest region of the part walls 29, 31, constitute respective dirt gutters 63, 64, the height of which amounts to a few millimetres and which can receive dirt (concrete milk or the like) to the height of the corner 66, 67.

A positioning face 68, 69, which is of the order of 1 em high, is provided vertically downwards from the corner 66, 67 and parallel to the mid-plane 14. It is followed by a setback 71, 72, so that the wall becomes thinner there and merges into the vertical inner gutter wall 87, 88. This terminates at the bottom together with the corner region 56, 57. The corner region 56, 57 merges outwards into a gutter bottom 73, 74 having, on the inside, a higher level 76, 77 which reaches approximately as far as the middle of the gutter bottom 73, 74 and which then descends by means of a small step to a lower level 78, 79. An outer wall 81, 82 thereafter ascends upwards at an angle of somewhat more than 900. The levels 76, 79 are approximately perpendicular to the mid-plane 14. The outer wall 81, 82 terminates approximately at the height of the setback 71, 72 in a short outwardly bent horizontal strip 83, 84, the top side of which is located 7 nearer to the setback 71, 72 than to the corner 66, 67.

The closing-plate device 13 has a fastening wall 86 which is as wide as the upper wall 16 and which does not cover the suspension gutters 53, 54, but still reaches as far as the inner gutter wall 87, 88, as shown in Figure 1. There extends from the fastening wall 86 forwards on the right according to Figure 1 and to the right according to Figure 2 a framework device 89 which has at the bottom a square hollow chamber 91, adjoining it at the top a triangular hollow chamber 92, and above the latter a topsupporting triangular hollow chamber 93. The hollow chambers 91 and 92 transmit upwards to the fastening wall 86 forces which are introduced upwards by a hook strip 94. This hook strip 94 has a vertical shank 96 and a hook end 97 which faces the fastening wall 86 and which is rounded. The hook end 97 is at a distance 98 from the fastening wall 86 which is sufficiently large to ensure that both the outer wall 81 and the strip 83 have room there, Figure 2 showing these geometrical conditions. The lowest wall 99 of the hollow chamber 91 extends horizontally and at a distance from the strip 83. The shank 96 is offset a little towards the fastening wall 86 in relation to the outer wall 101, 8 so that the fastening wall 86 bears specifically only with a short piece against the positioning face 68, of course completely only when, as shown on the left in Figure 2, a main beam is suspended in a main beam, and accordingly in the same way when the main beam 11 is suspended in a stay head which has tabs bent upwards in a similar way to the outer walls 81, 82.

The ceiling of the upper triangular hollow chamber 93 has, at the top, a horizontal plane wall 102 which is aligned with the top side 17 of the upper wall 16 and with the top side of its own upper wall and which, in the assembled state, is perpendicular to the mid-plane 14. The wall 102 merges with a short vertical flattening 103 into the adjoining oblique supporting wall 104 extending towards the fastening wall 86. The flattening 103 forms the counterstop face to the stop face 18.

Figure 2 shows, on the right at the top, a truncated shuttering skin 106 which is bordered as a frame by a closed shuttering-panel profile 107 consisting of an aluminium extruded profile.

This construction conforms to the construction according to German Patent 2,848,154. The crimping 108 known from there is also provided. However, the outer wall 109 has an inwardly directed bend 111 9 here, so that a drip nose 112 dripping into the dirt gutter 64 in the assembled state is obtained. After the bend 111, here too the continuation of the outer wall 109 can be positioned on the positioning face 69. A hook strip 113 identical to the hook strip 94 and having the same function and dimension projects in the lower corner on the left in Figure 2. The shuttering-panel profile 107 forms a quadrangular frame. The dimension is such that the top side 114 of the shuttering skin 106 is aligned with the top side 17 of the upper wall 16 and, if appropriate, therefore of course also with the top side of another suspended main beam. The outwardly directed face of the retaining projection 116 forms for the stop face 19 a specific and largely liquid-tight stop, this also applying to 18 and 103.

According to Figures 3 to 5, a secondary beam 117 has a beam profile 118 which is H-shaped. Nail strips 122, 123 are seated in its two end chambers 119, 121 which have an approximately square volume. The main beam 11 has no such nail strips. A hollow chamber 124 is provided between the end chambers 119, 121. When "chambers" are mentioned here, these of course also refer to the walls which surround them according to the drawing. Provided on the outside and at the outer end of the end chambers 119, 121 are bead chambers 126, 127, 128, 129, such as are already known from the hollow chambers 42, 44 of the main beam 11 and to which the congruent shape, at least in outer contour, also connects them, and here the planes 131, 132 correspond to the plane 46.

At each of the two ends of the beam profile 118, a closing-plate device 133 is provided. Its fastening wall 134 is welded to the vertically cutoff end face 136 and is so wide that it also covers the bead chambers 126, 127, 128, 129 in a closing and welded-on manner. The closing-plate device 133 is an aluminium. extruded profile with a crosssection according to Figure 3 or 4. A framework device 137, which is a rectangular profile with a diagonal strut, projects from the fastening wall 134. According to Figure 3, the horizontal mid-plane 138 of the framework device 137 is offset relative to the horizontal mid-plane 139 of the beam profile 118 by the thickness of a shuttering board 141. Hook strips 142, 143, the shape of which is known from the foregoing and which are not described again, project in both directions from the outer corner regions of the framework device 113. Since the hook strips 142, 143 are congruent, but, on account of the offset of the framework device 137, are offset, 11 specifically by the amount of the thickness of the shuttering board 141, on the one hand the plane 131 is in line with the top side 17 in the situation of Figure 3 and, with the suspension rotated through 1800, the plane 132 is in line with the underside of the shuttering board 141, the top side of which is, however, once again in line with the top side 17, and between the hook strip 143 and the underside of the shuttering board 141 there is the distance shown, sufficient according to Figure 4, so that the plane 132 and not the hook strip 143 performs the supporting function. As shown in Figure 4, one edge of the shuttering board 141 butts in a somewhat liquid-tight manner against the stop face 19.

It is possible, of course, to suspend only secondary beams 117 on the main beam, or main beams on one side and secondary beams on the other side and/or shuttering-panel profiles 107 of elementary formworks, etc.

12 claims:

1. Extruded profiled main beam which is symmetrical in respect of its vertical mid-plane, with a box profile defined by walls, with a horizontal upper wall, with side walls, with two horizontal suspension gutters extending laterally, with a closing-plate device at each end of the main beam, and with a stay-head standing face in the lower region and a stay-head stop face in the upper region of the closing-plate device, characterised by the following features:

a) The upper wall is flush with the main bean at the top, is solid in a bend-resistant manner and projects at least beyond the upper region of the side walls.

b) The suspension gutters are offset outwards from the side walls by means of a respective dirt gutter which has at least a V-shaped cross section.

The dirt gutters are located higher than the suspension gutters.

Claims

2. Main beam according to Claim 1, characterised in that the dirt gutters

have a wall which ascends c) 13 obliquely outwards and upwards.

3. Main beam according to Claim 2, characterised in that the wall is plane.

4. Main beam according to Claim 2 or 3, charac terised in that side walls are plane at least in the region of the dirt gutters.

5. Main beam according to one or more of the preceding claims, characterised in that the V-shaped cross-section forms an angle of approximately 900.

6. Main beam according to Claim 2, characterised in that the wall extends at an angle of 100-450, preferably at 150-350, relative to the horizontal.

7. Main beam according to Claim 1, characterised in that the suspension gutters each have a bottom wall which over the length has two different levels, and in that the higher level is a standing face for other beams and the lower level is a displacement location for concrete milk.

8. Main bean according to Claim 7, characterised in that the higher level is located further inwards than the lower level.

9. Main beam according to Claim 1, characterised in that the inner at least essentially vertical wall of the suspension gutters has a projecting stop projection which is directed outwards.

10. Main beam according to Claim 9, characterised in that the stop projection is provided in the upper region of the wall and merges into the dirt gutter. 11. Main beam according to Claim 1, characterised in that the suspension gutters have an outwardly turned- away narrow strip in their free end region. 12. Main beam according to Claim 11, characterised in that the strip is located approximately at the height at which the stop projection starts. 13. Main beam according to Claim 1, characterised in that, starting from the underside of the upper wall, the body of the main beam widens conically as far as the suspension gutters and narrows conically downwards from the greatest widening. 14. Main beam according to Claim 13, characterised in that a first horizontal connecting tension/compression wall, which connects the side walls, is provided approximately at the height of the greatest widening. 15. Main beam according to Claim 13, characterised in that a second such tension/compression wall is provided between the first tension/compression wall and the upper wall. 16. Main beam according to Claim 1, characterised in that a compression strut extends obliquely inwards and downwards towards the body from the is lower inner corner region of each of the suspension gutters. 17. Main beam according to Claim 16, characterised in that there is provided a third tension/compression wall which connects the side walls approximately at the height of entry of the compression struts into the side walls. 18. Main beam according to Claim 1, characterised in that there is provided on it at its very bottom a horizontal hollow-chamber profile which is solid in a bend-resistant manner and which has a horizontal plane on its underside and possesses three hollow chambers, of which the inner has a downwardly open T-shaped cross-section forming a hammer-head recess. 19. Main beam according to Claim 18, characterised in that it is a DIN hammer-head recess. 20. Main beam according to Claim 18, characterised in that the two outer hollow chambers have upwardly and outwardly rounded bead walls which project laterally beyond the body. 21. Main beam according to Claim 20, characterised in that the outer hollow chambers do not project as far as the suspension gutters. 22. Main bean according to Claim 21, characterised in that the outer hollow chambers 16 project approximately as far as the body is wide at its widest point. 23. Main beam according to Claim 1, characterised in that, apart from the closing plates, it consists of a one-piece extruded profile. 24. Main beam according to Claim 23, characterised in that it is an aluminium profile. 25. Main beam according to Claim 1, characterised in that the closing plates are extruded profiles cut to length. 26. Main beam according to Claim 25, characterised in that they are hollow-chamber prof iles. 27. Main beam according to Claim 25, characterised in that the closing plates extend at the bottom at most as far as the horizontal hollowchamber profile. 28. Main beam according to Claim 25, characterised in that it is at most so wide that longitudinal access to the suspension gutters remains free. 29. Main beam according to Claim 23, characterised in that the hollow-chamber profile has, at the height of the suspension gutters, a downwardly directed extension, the underside of which is located at the height of the standing face 17 and which can be inserted from above into the suspension gutter and the root region of which has a stop face for the stop projection and which can be subjected to pressure. 30. Main bean according to Claim 29, characterised in that the hollow chamber profile has a vertical fastening wall, by means of which it is fastened on its end face rigidly to end faces of at least the body, and in that the extension is fastened to the fastening wall by means of a framework device. 31. Main beam according to Claim 30, characterised in that the framework device is higher than the free end region of the suspension gutter at the point where a framework device of another main beam could touch this free end region. 32. Main beam according to Claim 30, characterised in that the framework device comprises, in the lower region, a rectangular hollow-chamber profile which merges at the top into a triangular hollow-chamber profile. 33. Main bean according to Claim 25 to 32, characterised in that the closing plates have, at the top, a horizontal plane wall, the top side of which is aligned with the top side of the upper wall and which extends outwards until its free end face is is butts against the lateral end face in the suspended state when the root region of the extension butts against the stop projection.

34. Main beam according to claim 33, characterised in that the horizontal plane wall is supported downwards on the fastening wall via an oblique strut.

35. System shuttering panel with a frame profile which has a retaining edge for a shuttering board and which has a continuous crimping on the inside, for suspension, positioning and bearing on a profiled main beam according to one or more of Claims 1 to 34, characterised in that it has an extension and a stop face for the stop projection, in a similar way to the profiled main beam.

36. System shuttering panel according to Claim 35, characterised in that the outer wall of the frame profile has an inwardly directed bend in a manner of a drip nose above the dirt gutter.

37. System shuttering panel according to Claim 35, characterised in that the frame profile, with the exception of its extension, does not rest anywhere on the suspension gutter.

38. Secondary beam with a beam profile which is essentially an H-profile, has a nail strip between one of its longitudinal grooves and can be suspended 19 in the suspension gutter of the main beam by means of a respective closing-plate device, characterised by the following features:

a) The two longitudinal grooves have a height necessary for a respective nail strip.

b) The closing-plate device has an upwardly and a downwardly directed extension which can be suspended in the suspension gutter of the profiled main beam.

c) one extension is nearer in height to the height of the top side of the beam profile than the other extension.

39. Secondary beam according to Claim 38, charac terised in that the height offset on the one hand corresponds to the alignment of one top side of the beam with the top side of the horizontal upper wall of the main beam and on the other hand corresponds to the height offset of the other top side of the beam with the top side of the horizontal upper wall.

40. Secondary beam according to Claim 38, charac terised in that the closing-plate device comprises a framework device and a fastening wall.

41. Device according to one or more of the preceding claims, characterised in that the extensions are compact longitudinal hook profiles, the free hook end of which is narrower than the is suspension gutters are wide. 42. Device according to Claim 41, characterised in that the hook end faces towards the middle region of the respective structural part. 43. Device according to Claim 41, characterised in that the hook end has an outer contour with which it projects at least not substantially into the lower level of the suspension gutters of the main beam. 44. An extruded beam for a concreting formwork having a plate-like upper wall which projects beyond at least one side wall of the beam and a dirt gutter projecting from said side wall and connected to a gutter for receiving a further beam. 45. Any of the beams or shuttering systems substantially as hereinbefore described with reference to the accompanying drawings.