SU1423714A1 - Method of assembling metal-wood triangular double-joint thrust structures - Google Patents

Abstract

The invention relates to construction and is intended for the assembly of supporting structures such as metal-wood triangular double-hinged arches. The purpose of the invention is to reduce the labor intensity of the assembly. The assembly of a metal-working triangular two-hinged arch is carried out as follows. Supporting flanges 2 are tightly mounted on the supporting ends of the wooden elements I, and a removable steel corner elements 5 with brackets 6 and with fixed 6 are attached to the wooden element in the zone of the ridge knot a bolt 7. Gear spikes 8, cut along the ends of the joining elements 1, are brought into engagement with the applied glue and with the help of the clamping bolt 7 establish the distance between the inner edges of the vertical shelves of the corner elements equal to L and determined by the shape. L

Description

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The invention relates to construction and is intended for supporting structures such as metal-wood triangular double-hinged arches.

The purpose of the invention is to reduce the laboriousness of the assembly.

FIG. Figure 1 shows the assembly scheme of a metal-triangular double-hinged arch; in fig. 2 is an example of the design of a ridge assembly of a metal-cut triangular double-hinged arch with fixed corner elements with a fixed bolt and connections between the corner and wooden straight elements; in fig. 3 shows section A-A in FIG. 2; in fig. 4 - section B - B in FIG. 2; in fig. 5 is a ridge assembly of a metal-working triangular double-hinged arch with the symbols explaining the above relations.

The assembly of the structure is carried out as follows.

Supporting shoes 2 are tightly mounted on the supporting ends of the wooden elements 1, they are pivotally fastened with a pull-off 3 with a rigid coupling 4. In the area of the ridge knot, removable steel corner elements 5 with brackets 6 and with anchor are attached to the wooden element 1. A common bolt 7 installed in a hole in the vertical shelf of the corner elements. Cut along the height of the cross section of the ends of the elements to be connected 1, the toothed spikes 8 with the applied glue are inserted into each other and using the tension bolt 7 establish the distance between the inner edges of the vertical shelves of the corner elements equal to D, tightening the tension coupling 4 , tension steel tightening 3, the tension force of which is transmitted to the steel support shoes 2, through them - to the wooden rectilinear elements I. The tension force rotates the plane of the pinch teeth 8 relative to the upper point of engagement. Tension 3 is applied until the distance between the consoles becomes equal to L. The distance is determined by the formula L (1 + 2S) шш, where S is the normalized technological gap between the top and bottom of the spiked teeth. ; Iju the length of the spike.

In this case, the pressing force of the glued elements is determined from the ratio

 f ° + i-d + 6) xT, i ,, 50

normalized pressing voltage; moment of transverse resistance

section of the wood element; 55

diameter bolt; the gap between the clamping bolt and the upper point of engagement;

H is the height of the cross section of the wood element;

a is the angle of the wood elements;

T is the carrying capacity of the connection of the wooden and steel corner element;

1 is the distance from the bond to the inner face of the vertical flange of the angle member.

The corner elements 5 are made, for example, of two channels welded to each other at the base of the corner element. The connections are made in the form of clamping clamps 9, which receive tilting forces, and grouse 10, which prevent the horizontal shelf of the corner element from shifting relative to the upper plane of the wooden element. The console 6 is welded to the horizontal shelf of the corner element. The number of tightening bolts is determined by calculation depending on the force N (see Fig. 5).

The invention allows to reduce the labor intensity of the assembly by 30%.

Claims (1)

Claims The method of assembling metal-wood triangular two-hinged spacer structures by gluing the rectilinear wood elements at an angle to a toothed spike, installing support shoes, fastening the pulling with the tension coupling, pulling the tension to the value of a predetermined force, characterized in that in order to reduce the labor intensity, after installing the support shoes and fastening the fastener with the tension coupling in the upper zone of the ridge assembly, corner elements with brackets and fastening bolts are installed, fixed with the aid of the distance between the inner edges of the vertical shelves of corner elements, determined by the formula D (I + 2S) U, where S is the normal technological gap between the verification and the base of the spiked spikes; L is the length of the toothed spike, and the pressing of the glued rectilinear wooden elements is tightened by means of a tension coupling to ensure the distance between the inner edges of the cantilevers equal to the distance between the internal edges of the vertical shelves, and the glued wooden elements pressed with the force determined from the ratio 1 / 2J. + J- +) where a is the normalized pressing voltage; W - moment of resistance transverse cross section of wood element; d is the diameter of the clamping bolt; the gap between the clamping bolt and the upper point of engagement; cross-section height of the wood element; angle of connection of wooden elements; the carrying capacity of the connection of wood and steel corner element; the distance from the bond to the inner face of the vertical shelf of the corner member. / GO Fig2 7 srag.Z gJc / hL (rig. b