RU2550118C1 - Method of connection of thin-walled elements of open cross section - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: method of fixation of a thin-walled element of open cross section includes arrangement of a longitudinal cut on the wall of the element end, bending of produced parts of the wall until contact with the main wall of the element, application of the end of the thin-walled element onto the connected part and installation of fastening elements within bent parts of the wall, besides, the longitudinal cut of the wall of the element is carried out at its middle, and the bend is performed towards different sides along the lines that connect the points lying at the end of the wall in one and three quarters of its height, and a point at the end of the cut.

EFFECT: reduced material intensity.

3 dwg

Description

The invention relates to the field of construction, and in particular to a method for joining thin-walled profiles in the supporting elements of light trusses, arches, etc.

A known method of connecting thin-walled parts, including combining parts with an overlap, the formation of dowels by pressing an 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.

A known method of connecting profile thin-walled elements of an open section [Patent RU No. 23239359, IPC EV 1/38, EV 5/02. Bulletin No. 20 of July 20, 2008]. The connection method includes 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.

Closest to the invention is a method of connecting thin-walled elements, including the implementation of two longitudinal cuts of the wall, bending the free section of the wall to contact the main wall, applying the end of the rod to the joined part and installing fasteners within the bent parts of the wall [RF Patent No. 2431720. Bulletin No. 29 dated 10/20/2011].

The disadvantage of this method of connecting thin-walled elements of open section is the additional consumption of steel, since the bent part of the wall reduces the estimated length of the element. In the braces of lattice structures, this value when fastening both ends reaches 25-30%.

The purpose of the invention is to reduce the consumption of material on a thin-walled element.

The result is achieved in that in the method of fastening a thin-walled element of open section, including performing on the wall of the end of the element of the longitudinal incision, bending the formed parts of the wall to contact the main wall, applying the end of the thin-walled element to the joined part, installing fasteners within the bent parts of the wall, according to According to the invention, a longitudinal incision of the wall is made in its middle, and the bending is carried out in different directions along the lines connecting the points lying on the end of the wall in one and three hours tvertyah its height, and a point at the end of the cut.

Figure 1 shows a perspective view of the attachment point of a thin-walled element; figure 2 shows the end of a thin-walled element of open section at the time of the longitudinal section; figure 3 shows the end of a thin-walled element at the time of bending of one part of the wall (shown by arrow).

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

The method of connecting thin-walled elements of open section is implemented as follows: at the end of the thin-walled element 1 in the wall along its middle (Figure 2), a longitudinal incision is made, the formed parts of the wall are bent in different directions to contact with the main wall. Bending is performed along the lines connecting points a and b lying on the end of the wall, in one and three quarters of the height of the wall, and point c lying on the end of the notch (Figure 3). After bending the parts of the wall, the end of the element 1 is applied to the part 2 to be attached and fasteners, for example self-drilling bolts 3, are installed. Fasteners are installed within the bent corners of the wall, thereby ensuring the double wall thickness of the collapse.

The method of connecting thin-walled elements of open section allows to reduce the consumption of material up to 25-30%.

Claims (1)

A method of attaching a thin-walled element of open cross section, comprising performing a longitudinal incision on the end wall of the element, bending the formed wall parts to contact the main wall of the element, applying the end of the thin-walled element to the joined part and installing fasteners within the bent parts of the wall, characterized in that the longitudinal incision the walls of the element are carried out in its middle, and the bending is carried out in different directions along the lines connecting the points lying on the end of the wall in one and three quarters of it The notes and the point at the end of the cut.

Images