Method for connecting thin-walled elements of open section

FIELD: construction.

SUBSTANCE: connection method involves overlapping of ends of thin-walled elements with walls on a sheet gusset plate, installation of the central bolt in the pre-drilled holes in the walls of the thin-walled elements and the gusset plate, setting of the required connection angle, final tightening of the central bolt and installation of self-drilling bolts. Before installing the centre bolt between the walls of the thin-walled elements, a nut and a head of the central bolt, convex sheet parts are installed, and final tightening of the central bolt is stopped when the edges of the sheet parts are thrust against the shelves of the connected thin-walled elements.

EFFECT: increase of the assembly bearing capacity.

2 cl, 5 dwg

 

The invention relates to the field of construction and can be used, for example, when mounting the light arches of thin-walled elements.

A known method for joining thin-walled elements of the open section, which consists in performing two longitudinal incisions in the wall of the profile and contour of the formed wall section to contact with the main wall profile, the imposition of the end of the profile sheet fasenko and installation samouilidis bolts [Patent RU No. 2431720, IPC EV 1/38. Bulletin No. 29 dated 20.10.2011].

The known method provides a higher strength connection, however, leads to waste of material by increasing the initial length of the element and does not provide increased carrying capacity while the perception of the bending moment.

Known another method for joining thin-walled elements of the open section, including installation on the end of thin-walled element, an intermediate element in the form of staples from sheet steel, the imposition of a late item on the sheet fasenko and their attachment by setting samouilidis bolts [Patent RU No. 2436906, IPC EV 1/38, EV 1/58. Bulletin No. 35 dated 20.12.2011].

The disadvantage of this method of connection is low bearing capacity when the perception of the bending moment, which does not allow to use it, for example, during the construction of light arches of the thin-walled element of the century

Closest to the invention is a method for joining thin-walled elements of the open section, including the imposition of the ends of thin-walled profiles walls on the sheet fasenko, install the center bolt into the pre-drilled holes in the wall profile and faconti, setting the desired angle of connection, the final tightening Central bolt and install samouilidis bolts [Patent RU No. 2423581, IPC EV 1/32, EV 1/58. Bulletin No. 19 of 10.07.2011].

The disadvantage of this method of connection is low strength of the connection node when the perception of the bending moment.

The invention is directed to increasing the carrying capacity of the connection node of thin-walled elements of the open section when uploading host bending moment.

The result is achieved that the connection of thin-walled elements of the open section, including the imposition of the ends of thin-walled elements walls on the sheet fasenko, install center bolt into pre-drilled holes in the walls of thin-walled elements and faconti, setting the desired angle of connection, the final tightening Central bolt and install samouilidis bolts before you install the center bolt between the walls of thin-walled elements and the nut and the head of the Central bolt set convex Fox the new parts and the final tightening of the Central screw lead up to the stop edges of sheet items in shelves connected thin-walled elements. To simplify the nodal connections before installing convex sheet parts in them provide openings for samouilidis bolts, which are mounted alternately on the one and on the other side of the connection.

Figure 1 shows an example of using the method for joining thin-walled elements of the open section at the erection of light arches. Figure 2 shows the connection node of thin-walled elements of the open section (node a in figure 1). Figure 3 Dan cut 1-1 of figure 2. Figure 4 shows the section of the connection node in the Assembly process. Figure 5 shows a General view of the convex plate part.

Hub connection includes the ends of thin-walled elements of the open section 1 and the sheet fasenko with 2 pre-drilled in the walls of the holes, the Central bolt 3, a convex plate part 4, which can be pre-drilled hole samouilidis bolts 5.

The Assembly of the connection node is performed in the following sequence. Before you install the center bolt 3 into pre-drilled holes in the walls of the members 1 and sheet of fasolki 1 between the wall elements 1 and the nut and the bolt head 3 sets of convex plate part 4 pre-Pro is Orlandini holes for installation samouilidis bolts 5. After giving the desired angle of connection elements 1 to produce the final tightening Central bolt 3 to the stop edges of the convex sheet parts 4 shelves connected elements 1 and the installation samouilidis bolts 5.

When tightening the Central bolt 3 edges of sheet parts 4 rest on the shelves of connected thin-walled elements 1, which enables the convex sheet parts 4 in the connection bending. Thus the carrying capacity of the connection determines the total wall thickness of thin-walled elements 1 and convex sheet parts 4 running on crushing.

The method of connection of thin-walled elements of the open cross-section depending on the thickness of the applied convex sheet parts for increasing the bearing capacity of the connection, perceiving bending moment, more than twice.

1. The method of connection of thin-walled elements of the open section, including the imposition of thin-walled elements of the wall on the sheet fasenko, install center bolt into pre-drilled holes in the walls of thin-walled elements and faconti, setting the desired angle of connection, the final tightening Central bolt and install samouilidis bolts, characterized in that before you install the center bolt between the walls of thin-walled elements and nut and g is a clever Central bolt set convex plate part, and the final tightening of the Central screw lead up to the stop edges of sheet items in shelves connected thin-walled elements.

2. The method of connection of thin-walled elements of the open cross-section according to claim 1, characterized in that before installing convex sheet parts in them provide openings for samouilidis bolts, which are mounted alternately on the one and on the other side of the connection.



 

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