RU2431720C1 - Method to connect thin-walled elements of open section - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: method of connection includes application of a thin-walled profile end with a wall onto a connected part and installation of fastening elements. Fastening elements tighten the profile wall with the part. At first two longitudinal cuts are made on the wall of the profile end. The produced section limited with two side cuts are bent until contact with the main profile wall. The fastening elements in the form of self-drilling bolts are installed within the plane of the wall section.

EFFECT: increased bearing capacity, reduced labour intensiveness and cost.

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Description

The invention relates to the field of construction, and in particular to methods of connecting thin-walled elements of open section in the supporting structures of light trusses, frames, arches, etc.

A known method of connecting thin-walled profile elements of open cross section, comprising combining the two ends of the connected elements with overlapping walls and installing fasteners in the form of self-drilling screws and dowels [Patent RU No. 2236522. IPC E04B 1/48. Bulletin No. 26 of September 20, 2004].

A disadvantage of the known method of joining thin-walled parts is the inability to connect parts with a large difference in thickness and the presence of a large number of fasteners due to the small thickness of the parts to be joined.

There is another method of connecting thin-walled parts, including the combination of overlapping parts, the formation of dowels by pressing the embedded element and the installation of fasteners in the form of self-drilling screws [Patent RU No. 2264505. IPC Е04В 1/00. Bulletin No. 32 of November 20, 2005].

A disadvantage of the known method of joining thin-walled parts is the impossibility of connecting parts with a large difference in thickness and in the complex technology of the keys.

Closest to the invention is a method of connecting profile thin-walled elements of an open section [Patent RU No. 2229359. IPC Е04В 1/38, Е16В 5/02. Bulletin No. 20 of July 20, 2008]. The connection method involves combining the connected profile elements - channel laps with walls on a thicker fastener and installing through bolts with rings that, when the bolts are tightened, press the wall of the thin-walled element into the countersink holes in the fastener.

The disadvantage of this method is the high complexity of drilling and machining holes and the availability of additional parts.

The invention is aimed at reducing the complexity and cost of performing the connection.

The result is achieved in that in the known method of joining thin-walled elements of open section, including applying the end of the thin-walled profile to the wall to be attached to the component and installing fasteners tightening the wall of the profile, according to the invention, two longitudinal cuts and a formed wall section limited to two side incisions, bend until it contacts the main profile wall, and fasteners in the form of self-drilling bolts are installed within the plane o ognutogo wall portion.

The invention is illustrated in the drawings. Figure 1 shows a General view of the connection node. Thin-walled profile at the time of making longitudinal cuts in the wall is shown in Figure 2. Figure 3 shows a thin-walled profile at the time of bending of a wall section bounded by two side cuts.

The connection unit includes a thin-walled profile of open section 1, for example, a channel, a joining part 2, for example a sheet gusset, and a self-drilling bolt 3.

The method of connecting thin-walled elements of an open profile is implemented as follows. Before applying the end of the thin-walled profile 1 to the joined part 2, two longitudinal incisions 4 are made on the wall of this profile (Fig. 2). The formed wall section 5, bounded by two longitudinal cuts 4, is bent until it contacts the main wall of profile 1, after which profile 1 is laid on the wall to be attached to part 2 and fastened with a self-drilling bolt 3, while the bolt is installed within the plane of the bent wall section 5.

The method of connecting thin-walled elements of open cross-section provides an increase in the bearing capacity by two times, because a self-drilling bolt fastens at the same time the double wall thickness of the profile, and due to the lack of additional parts and hole making, the complexity and cost of the connection are reduced.

Claims (1)

A method of connecting thin-walled elements of open cross section, including applying a wall of the end of the thin-walled profile to the part to be attached and installing fasteners that tighten the wall of the profile with the part, characterized in that at first two longitudinal cuts and a wall section formed by two side cuts are made on the wall of the end of the profile, bend to contact with the main wall of the profile, and fasteners in the form of self-drilling bolts are installed within the plane of the bent section of the wall.

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