WO2010124681A2

WO2010124681A2 - Supporting framework

Info

Publication number: WO2010124681A2
Application number: PCT/DE2010/000489
Authority: WO
Inventors: Cedrik Zapfe
Original assignee: Schletter Gmbh
Priority date: 2009-05-01
Filing date: 2010-04-30
Publication date: 2010-11-04
Also published as: EP2425071A2; WO2010124681A3; DE102010018918A1; DE202009006181U1

Abstract

The supporting framework comprises two-part binders having respective separate profiles (1a, 1b) which have respective upper flanges (3a, 3b) and webs (4a, 4b) and which extend along each other from web (4a) to web (4b) in a mirror-inverted manner. The binders are interspaced and supported on struts (9), the upper ends of the struts (9) being braced between the webs (4a, 4b) of the profiles (1a, 1b) and a layer of purlins (5) being arranged on the binders at a right angle. Each purlin (5) is clamped onto both upper flanges (3a, 3b) by means of clamping elements (16a, 16b), an undercut threaded channel (15a, 15b) being integrated into every upper flange (3a, 3b) for screw connections (17a, 17b) with which the clamping elements (16a, 16b) are braced to engage with.

Description

description

Structure

The invention relates to a structure with supports on supports on which a layer of purlins is arranged transversely. Structures of this type are used, inter alia, for precast buildings and referred to as purlin binder construction. For horizontal load transfer such structures can be additionally stiffened between the supports, for example by means of cross braces, which is often undesirable for practical and aesthetic reasons.

The object of the invention is to provide a supporting structure of the aforementioned type, which is rigid in spite of a cleared space between the columns and purlins in purlin direction. In addition, the purlins should be attachable to the ties in a simple manner.

The problem is solved with the support structure specified in claim 1. Accordingly, the structure comprises a plurality of binders which are spaced apart on supports and on which a layer of purlins is arranged transversely. It is essential that the trusses of the structure are made in two parts. They each comprise two separate profiles, preferably extruded or rolled sections, which each have a top flange and a web and lead bridge to bridge mirror image side by side. Preferably, these profiles are additionally designed in addition U-shaped, each with a lower flange. For storage of the binder, the upper ends of the supports between the webs of the profiles of the respective binder are clamped. Furthermore, the purlins are clamped in a special way by means of clamping body on both upper chords of the profiles. For this purpose, an undercut screw is integrated in each upper flange, which acts as an approach for screw, by means of which the clamping body are stretched. As a result, the purlins can be clamped twice, preferably four times, with the respective binder at the spacing of the screw channels. As an approach for the clamping body clamping webs are preferably provided on both sides of the purlins.

Due to the statically favorable connections between trusses and columns as well as between trusses and purlins there is a Teileinspannung in the upper corners of the frame formed between the columns and purlins, which is a statically appropriate ablation of horizontal forces on the supports in purlin direction allows. Other reinforcing measures between the columns and purlins can therefore be dispensed with, so that the light space remains kept there. This can be particularly advantageous if the structure belonging to the structure is to have transversal to the purlins several entrances or passages for vehicles. For horizontal load transfer in the direction of the binder, however, the supports can be clamped down in the usual way as well as stiffened with each other, it being preferred if the columns together with the respective binder form a half-timbered disc. Another important advantage of the structure is that the purlins can be quickly and easily clamped on the ties anywhere along the screw channels. Therefore, the distance of the purlins to the load capacity or the format of different roofing can be easily and accurately adjusted. This property can be particularly advantageous when equipping the purlins with glass panes or photovoltaic modules.

The invention will be explained in more detail with reference to an embodiment. It shows:

1 is a left side view of a structure,

2 is a front view of the structure of FIG. 1,

3 is a detailed view D1 of FIG. 1,

4 shows a detail section D2 from FIG. 1 and FIG. 2.

The supporting structure illustrated in FIG. 1 and FIG. 2 in a two-sided projection essentially comprises a W-shaped support group A with four oblique supports 6 to 9, an identical support group B, of whose supports in FIG. 2 only the support 9 'can be seen, also two identical binders 1 and 1' and a layer of 19 equal cross beams 5. The support groups A and B are mutually parallel spaced and not shown foundations 11 and 11 'connected. On the supports 6 to 9 or on the support 9 'belonging to the support group B store the two binders 1 and 1'. These are spaced parallel to each other with the width of the field between the support groups A and B. Finally, the purlins 5 are arranged transversely on the binders 1 and 1 ¹ at a constant distance.

With reference to the representatively selected details D1 and D2, in FIG. 3 and FIG. 4 the binder 1, its connection to the support 9 and its connection to one of the cross members 5 are closer seen. As shown in FIG. 4, the binder 1 is made in two parts. It consists of two separate, hatched in the drawing, light metal extrusion sections 1a and 1b together. These are mirror-inverted U-shaped produced in an extrusion process and each have a top flange 3a and 3b, a web 4a and 4b and a bottom flange 27a and 27b. Furthermore, it can be seen in FIG. 4 that the extruded profiles 1a and 1b extend in mirror image, namely web 4a to web 4b, next to one another, the upper end of the support 9 being clamped in an articulated manner between the two webs 4a and 4b. The clamping takes place by means of a screw connection 20, which leads through bores in the webs 4 a and 4 b and the support 9. Since the support 9 has a rectangular cross section and the mutually facing sides of the webs 4a and 4b are flat, the clamping of the support 9 is there very stiff and suitable for a horizontal load transfer in purlin direction. The three other supports 6 to 7 are connected in the same way to the binder 1, wherein only the angular positions are different.

As can further be seen from FIGS. 3 and 4, the triangular-shaped purlin 5 is clamped with two sprags 16a on the top flange 3a of the extruded section 1a as well as with two sprags 16b on the top flange 3b of the extruded section 1b by depression. As an approach for the clamping body 16 a and 16 b, the purlin 5 on both sides of clamping base 18 on its base. To clamp the clamping body together with the clamping webs 18 of the purlin 5 against the upper chords 3a and 3b, respectively, each clamping body 16a and 16b provided a screw 17a and 17b, and secondly in the upper flange 3a and in the upper flange 3b respectively undercut, open at the top open screw 15a and 15b, which acts as an approach for screw 17a and 17b. These screw 17a and 17b each consist of a cap screw whose head attaches to the respective clamping bodies 16a and 16b, and from a square nut, which attaches to the undercut of the respective screw 15a and 15b. Thus, the purlin 5 at its two clamping webs 18 with two extruded profiles 1a and 1b, that is firmly connected to four rectangular spaced locations with the binder 1, whereby the connection of the purlin 5 to the binder 1 very stiff and suitable for horizontal load transfer in purlin direction is. In the same way, the other purlins 5 are mounted on the binder 1. In addition, in order to increase the strength of the clamping connections and to facilitate the assembly, both the clamping body 16a and 16b and the clamping webs 18 corresponding projections, which engage behind each other during clamping. Of course, the clamp body 16a and 16b one side of the purlin 5 may alternatively be combined to form a strip-shaped clamping body.

At the binder 1 ', the purlins 5 and the supports of the support group B are connected in the same manner as described above, so that partial restraints are realized in the two upper corners of the frame shown in FIG. 2 as representative of the supports 9 and 9 ¹ and the purlin 5 , which allow a statically effective removal of horizontal forces in purlin direction 10. The light space of this rectangular frame is still kept free and can be used in particular for transits with vehicles. It is also essential that due to the integrated in the extrusions 1a and 1b screw channels 15a and 15b all purlins 5 can be quickly and easily mounted anywhere on the binder 1 and 1 ¹ . This may be particularly advantageous if, as in this embodiment, the purlins 5 are provided for supporting photovoltaic modules and therefore should be comparatively narrow and precise constant distance.

To 1a and 1b with each other to further stiffen the extrusions b, ¹ individual spacers 24 are provided at each intersection between the stringers 5 and the ties 1 and 1, as seen in Fig. 3 and Fig. 4 between the webs 4a and 4b Area of the lower chords 27 a and 27 b are clamped. For clamping the spacer elements 24 by means of screw 25a and 25b undercut screw channels 25a and 25b are integrated in the webs 4a and 4b, which are open to the respective other web 4b and 4a and act as an approach for the screw 26a and 26b.

For horizontal load transfer in the binder direction form the supports 6 to 9 together with the binder 1, as can be seen in Fig. 1 finally, two downwardly tapered truss triangles. For this purpose, the upper ends of the supports 6 to 9, as already explained above, each clamped with a bolt connection 20 between the webs 4a and 4b of the extruded sections 1a and 1b of the binder 1 and the lower ends of the supports 6 and 7 and 8 and 9 per truss triangle connected to a common node element hinged. Since these node elements are attached to a foundation, not shown here, forming the supports 7 and 8 together with this foundation another, upwardly acute-angled truss triangle. All three truss triangles together form a half-timbered disc, which is a horizontal Load transfer guaranteed in the direction of the binder in statically favorable manner. The opposite binder 1 ¹ and the supports of the support group B are designed to be identical. Of course, as an alternative to such a truss disc as well as ordinary vertical supports may be provided which are clamped at the bottom of a foundation and / or stiffened with each other.

Claims

protection claims

1. supporting structure with two-part ties (1, 1 ') each with two separate profiles (1a, 1b), each having a top flange (3a, 3b) and a web (4a, 4b) and the web (4a) to web ( 4b) lead mirror images next to each other, wherein the binder (1, 1 ') spaced on supports (6 .. 9, 9') store and the upper ends of the supports (6 .. 9, 9 ") between the webs (4a, 4b ) of the profiles (1a, 1b) are clamped, and transversely on the binders (1, 1 ¹ ) a layer of purlins (5) is arranged, and the purlins (5) by means of clamping bodies (16a, 16b) respectively on both upper straps (3a, 3b) are clamped, for which in each upper flange (3a, 3b) an undercut screw (15a, 15b) is integrated as an approach for screw (17a, 17b), with which the clamping body (16a, 16b) are stretched.

2. Supporting structure according to claim 1, characterized in that the profiles (1 a, 1 b), each with an additional lower flange (27 a, 27 b) are U-shaped or box-shaped each with an additional lower flange and an outer web.

3. Supporting structure according to claim 1, characterized in that the purlins (5) each clamping webs (18, 18 ') as an approach for the clamping body (16 a, 16 b).

4. Supporting structure according to claim 1, characterized in that spacer elements (24) are provided, which are clamped between the webs (4 a, 4 b).

5. Supporting structure according to the preceding claim, characterized in that for clamping the spacer elements (24) by means of screw connections (26a, 26b) undercut screw channels (25a, 25b) in the webs (4a, 4b) are integrated.

6. Supporting structure according to claim 4 or 5, characterized in that the spacer elements (24) at the intersections of the purlins (5) and binder (1, 1 ¹ ) are arranged.

7. Supporting structure according to claim 1, characterized in that at least one of the binder (1) and the supports (6 .. 9), on which it is arranged, form a framework.

8. Supporting structure according to one of the preceding claims, characterized in that the supports (6 .. 9) between the webs (4 a, 4 b) each with a bolt connection (20) are clamped articulated.

9. Supporting structure according to one of the preceding claims, characterized in that the profiles (1a, 1b) are extruded profiles made of light metal or rolled sections of a steel.

10. binder of a structure according to any one of the preceding claims.