SU975934A1 - Butt joint of construction members - Google Patents

Description

The invention relates to the construction and is meant The advantage ¹

for multi-storey frame-panel and large-panel buildings for various purposes.

Known butt joint, in

which the construction elements are connected with

rigid connection loops protruding from the joined building elements, transverse fasteners [1].

However, in these connections, the perception of shear forces acting

along the seam, is ensured only by the operation of the hinge rods on the cut and the monolithing concrete. For perception

shear force such a butt joint requires increased consumption

metal on the hinges and considerable labor during the homonolishing.

The closest technical solution to the proposed solution is a joint construction

items including

along the joined elements and core mortars placed in their grooves

parts and fasteners C2].

However, when applying for mortgages

parts in the form of Λ-loops n25

thirty

2

how difficult is welding of inclined seams and the amount of monolithing is quite large.

In addition, in some cases, for example when installing A-shaped loops near the ends of the building elements to be connected, it becomes necessary to lengthen the reinforcing bars of the loops for structural reasons to ensure their reliable anchoring.

The aim of the invention is to improve the manufacturability of installation work and reduce the consumption of metal.

This goal is achieved by the fact that in a butt joint of building elements, including core core parts and fasteners installed along joined construction elements and housed in their grooves, each core mortgage part is made of a bent reinforcing bar with an average straight section and bends placed mainly with one sides of the straight section, with core inserts mounted on at least one of the two building elements joined in one plane and on two out of three building elements

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Combi, joined in two planes, in addition, fasteners made in the form of plates and connected with core embedded parts.

When connecting three building elements equipped with 5 core embedded parts, the grooves in the middle of them, installed in the perpendicular direction, are made in the form of through holes, and the pads are made in one piece. , ten

The limbs of the core embedded parts are made with a curvilinear shape. .one

Moreover, the core embedded parts themselves are made of a closed configuration.

Figure 1-5 - General views of core embedded parts of different configurations; 6 and 7 - butt joint of two building elements in one plane; on fig.Z and 9 butt connection of three building elements' in two planes.

Butt joint of construction "elements includes embedded parts, 25

made of bent reinforcing bars. Each embedded part (figure 1-5) includes a straight section 1 and limb 2, located in the same plane. For core mortgage _ parts placed at the edges of the joined construction elements (Figures 1-3), bends 2 are placed on one side relative to the straight, section 1 and form with it a bent rod P, DG, νν-like outline? 35

The straight section 1 of the core embedded part is installed along the seam between the joined construction elements 3 and is partially placed in Groove 4 so that it can be welded to non-40 th fasteners. The bends 2 (for better anchoring of the straight section 1) are located in the concrete body of the building element 3 outside the grooves 4. This design allows 45 to perceive quite well the shear forces directed along the butt joints of the building elements. '

'For improvements in the anchoring of core embedded parts, their bends 2 can be made (figure 4) of a curvilinear shape, and to reduce compliance, the embedded parts themselves can be made in a closed configuration. radio- (figure 5), for example in the form of Δ -shaped loops, manufactured on automated installations.

Figure 6 and 7 shows the butt connection of two building elements ^ 0 3 and 5, joined in one plane. Rod inserts 6 and fasteners in the form of plate metal lining 7 'are placed inside the grooves 4. The latter for higher-o5

the convenience of stripping, and performing welds are provided with bevels 8. For structural considerations, in most cases it is quite sufficient to impose a one-sided weld (FIG. 6) for transmitting shear forces. However, in some cases it is necessary to use double-sided welds (Fig.7). Therefore, the 'grooves 4 are made, in the second case, broadened with a gap between the core embedded parts 6 and the concrete body of building element 3 and 5.

Similarly arranged butt joint when adjacent building element 3, equipped with a mortgage core part b, to another construction element, having a "conventional" plate or stamped embedded parts. Such connections may occur when connecting precast diaphragm panels with columns that are part of vertical connections.

Figures 3 and 9 show a butt joint of three building elements, which is carried out in two different (mutually perpendicular) planes: a cross-shaped joint (Fig. 8) and a joint into the Taurus (Fig. 9). At the same time the groove of the average building element

9 made in the form of a through hole

10 is enlarged, and the fastening fastener 11 is in the form of a single element welded to all three core mortgage parts 6 and 12. The broadened part 10 of the groove in the building element 9 is arranged on the side of the installed fastening consignment 11.

The use of nodes of type 8 and 9 allows you to simply make the butt connection of the three building elements in the cross and in the brands with the convenience of welding.

The use of core embedded parts P, .GL _rn-like outlines instead of Λ-shaped outlines allows reducing the slot volume and, accordingly, the labor intensity of monolithing by 1.5 times, reducing the length of welds by 20-30%, reducing the consumption of reinforcing steel an average of 10%, which will be 2-3 kg of steel on each panel.

 The use of core inserts P, GU, 17-shaped shape instead of the "conventional" plate inserts, now used in mass construction, will significantly simplify the manufacture of embedded parts and almost halve the consumption of metal for embedded parts by about 15-20 kg per each · I blow the panel.

five

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Claims (4)

Claim 1. Butt joint builder-. core elements and fasteners installed along the joined building elements and placed in their grooves 5, characterized by the fact that, in order to improve the processability of installation and reduce the metal consumption, each core element is made of bent reinforcing bar with a middle straight section and bends, placed mainly on one side of the straight section, with the rebar-15 fixtures embedded in at least one of the two building elements ntov, abutting in the same plane, the first two of the three building elements 20 abutting on two planes, in addition, the fasteners are designed as overlapping and connected with rod mortgage details. 2. The connection according to claim 1, characterized by the fact that when connecting three construction elements equipped with core embedded parts, the grooves in the middle of them, installed in the perpendicular direction, are made in the form of through holes, and the pads are made in one piece. 3. Connection according to claims 1 and 2, which is due to the fact that the bends of the core embedded parts are made in a curvilinear shape. 4. Connection PP.1-3, characterized in that the core embedded parts are made of a closed configuration.