SU436126A1 - JOINT CONNECTION, MOSTLY FOR CONSTRUCTION CONCRETE STRUCTURES - Google Patents

Description

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The invention relates to butt joints, mainly for precast concrete structures, for example, spans, with prefixed rigid fittings and allows to reduce the effect of manufacturing tolerances on mounting accuracy.

Known by the main author. St. LI 160720 butt joint, mainly for precast concrete structures, connection with rigid parts, pre-fixed in adjacent elements. To reduce the effect of manufacturing tolerances on the accuracy of the assembly, each of the inserts is made in the form of a tapered downward, open, for example, from two sides, box of mostly trapezoidal in terms of cross section, into which inserts are inserted during installation, which join adjacent boxes .

The known butt joint is intended to combine preferentially slab reinforced concrete elements of normal thickness, for example 15-20 cm, working for a normal, for example, transverse force.

In order to facilitate the joining in the proposed connection, the inserts are made in the form of a pair of paired, provided with coaxially arranged through holes, the ribs, the lower outer edges of which form the wedge shape are fixedly attached, for example, by welding, to the embedded parts fixed in adjacent joined elements, and through through

holes in the edges of the missing rod.

FIG. 1 shows a cross-section of the proposed butt joint with normal alignment of the edges of adjacent elements; in fig. 2 - the same, with vertical

the displacement of the edges of adjacent elements; in fig. 3 - the same, longitudinal section; in fig. 4 - the same in terms of.

In the bevels at an angle of 45 ° along the upper edges of the abutting elements 1 and 2, at regular intervals, for example, 2-3 m, embedded parts 3 and 4 are fixed, forming a box open from above, tapering downwards at an angle, for example, 90 °, into which insert is inserted during installation. The liner is made in the form of a series of paired edges of the opposite direction 5 and 6, for example, two pairs spaced 12–15 cm from each other, installed perpendicular to the embedded parts of adjacent elements.

In the ribs 5 and 6 there are made through coaxial holes 7 through which the rod 8 passes.

When the paired edges of the opposite direction 5 and 6 are joined by the rod 8, their lower outer faces form a wedge in diameter, which, due to the angular mobility, exactly fits to the embedded parts of adjacent elements. The lower outer edges of the ribs are rigidly attached to the embedded parts by welding. In the process of assembling the connected elements, a combination of open-top boxes formed by inserts is formed along the longitudinal seam, with inserts of ribs and rods at the same time, which ensures alignment of the rods of all liners when attaching the ribs to the parts. The use of this joint, along with facilitating the docking of reinforced concrete elements, makes it possible to improve the conditions for their manufacture, installation (to eliminate seasonal restrictions) and operation. The subject of the invention Butt joint, mainly for prefabricated reinforced concrete structures according to ed. St. No. 160720, characterized in that, in order to facilitate joining, the inserts are made in a series of paired, fitted with coaxially arranged through holes, the ribs, the lower outer edges of which form the wedge shape are fixedly attached, for example, by welding, to mortgages parts fixed in the bevels of adjacent abutting elements, and a rod is passed through through holes in the ribs.

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