RU2551175C1 - Thin-walled open section element connection method - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: method of connection of thin-walled open section element includes making on the element end wall of a longitudinal cut, flanging of the formed parts of a wall, lapping of the rod end on the attached detail and installation of fasteners. The longitudinal cut of a wall is performed in its middle part, and then on the wall width the sheet detail with symmetric triangular cut with top in a point of the longitudinal cut end is placed, and bending of wall parts is performed until contact with the external surface of a sheet detail. Fasteners are installed both within the wall parts flanged on a sheet detail, and within the triangular cut of a sheet detail section triangle cut.

EFFECT: increase of load bearing capacity of connecting unit.

5 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 the combination of overlapping parts, 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 joining 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 open section [Patent RU No. 2229359 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 joining thin-walled elements, including making 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 attachment and installing fasteners within the bent parts of the wall [RF Patent No. 2431720. Bulletin No. 29 from 10.20.2011].

A disadvantage of the known method of joining a thin-walled element of open cross section is the additional consumption of steel, since the bent part of the wall reduces the calculated length of the element, as well as the low tensile strength of the joint.

The purpose of the invention is to increase the bearing capacity of the connection node.

The result is achieved in that in the known method of connecting a thin-walled element of open cross section, including performing on the wall the end of the element of the longitudinal incision, bending the formed parts of the wall, applying the end of the rod to the joined part and installing fasteners, according to the invention, a longitudinal incision of the wall is made in its middle, and then a sheet part with a symmetrical triangular cut with a vertex at the point of the end of the longitudinal cut is set to the width of the wall, and the bending of the wall parts is performed until KTA the outer surface of the sheet metal part, wherein the fastening elements is set as a range in the sheet metal part bent wall portions and projecting within the vertex of the triangular cut sheet metal portion.

In FIG. 1 shows the end of a thin-walled element of open section with a longitudinal section of the wall; in FIG. 2 shows a variant of the cross section of the element, section 1-1 in FIG. one; in FIG. 3 shows the installation time of the sheet metal part with a triangular cut; in FIG. 4 shows an assembled connection unit; in FIG. 5 shows a section 2-2 in FIG. four.

The connection node of the thin-walled element includes the end of the element 1, the sheet metal part 2 with a triangular cutout, the fastened part 3 and the fastening elements 4.

The method of connecting a thin-walled element is implemented as follows: at the end of the element 1 in the middle of the wall, a longitudinal incision 5 is made with the vertex O, then a sheet part 2 with a symmetrical triangular notch with a vertex at the point O coinciding with the end of the longitudinal incision 5 of the element wall is installed on the width of the element wall 1 one.

After that, the wall parts of the element 1 are bent until it contacts the outer surface of the sheet metal 2, the end of the element 1 with the sheet metal 2 is laid on the joining part 3, and fasteners 4 are installed, for example, self-tapping bolts, as within the wall parts 2 bent on the sheet metal 2 , and within the limits of the portion of the sheet metal part protruding beyond the top of the triangular cutout.

When assembled, the joint does not reduce the length of the element 1 and has an increased thickness of the parts to be joined, which increases the bearing capacity of the joint for collapse.

Claims (1)

A method of connecting a thin-walled element of open cross section, including performing on the wall the end of the element of the longitudinal notch, bending the formed parts of the wall, applying the end of the rod to the attached part and installing fasteners, characterized in that the longitudinal notch of the wall is made in its middle, and then set to the width of the wall a sheet part with a symmetrical triangular notch with a vertex at the point of the end of the longitudinal notch, and the bending of the wall parts is performed before contact with the outer surface of the sheet part, wherein the fasteners are installed both within the bent parts of the wall bent onto the sheet part, and within the limits of the portion of the sheet part protruding beyond the apex of the triangular cut-out.

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