SU757667A1 - Apparatus for tensioning flexible reinforcement - Google Patents

Description

The invention relates to a device for * tensioning flexible reinforcement in the manufacture of prestressed rod building structures.

A device for tensioning flexible reinforcement is known, which contains a glass and a bolt with a nut, while the glass is made with a roller fixed inside it and a hole at the bottom, and a bolt with a longitudinal groove and a through hole in the winch, in which the end of the reinforcement is fixed [1).

Another device of the same purpose is known, containing a support and a movable wedge adjoining it, on which a bracket fixed at the end of the flexible reinforcement, or a loop of the closed flexible reinforcement 12].

The disadvantage of these devices is the inability to simultaneously tension several branches of flexible reinforcement.

Closest to the invention is a device for tensioning flexible reinforcement, containing a base with rounded stops for fastening the reinforcement loops [3].

2

A disadvantage of this device is the impossibility of tension with its help of high-strength reinforcement.

The purpose of the invention is to provide the possibility of tension high-strength reinforcement.

For this purpose, a device for tensioning flexible reinforcement, containing a base with rounded stops for fixing hinges of reinforcement, is provided with supporting strips fixed on the base coaxially to the stops, and clamping pads installed between the stops and slats, and the base is made in the form of superimposed one on another plates fastened between themselves after tensioning the reinforcement. In addition, to increase the strength of the device, it is provided with a plate lining attached to the upper part of the stops, and support plates attached to the ends of the base plates at the places of application of the load.

FIG. 1 shows schematically the general

type of device for tensioning four converging branches of reinforcement; in fig. 2 - the same

for tensioning eight converging branches ap3

matra; in fig. 3 - section A — A in FIG. one; in fig. 4 shows a section BB in FIG. 3; in fig. 5, view B in FIG. 3; in fig. 6 - section G-Y in FIG. 3; in fig. 7 - a general view of the device of the tension day of four converging branches of reinforcement with conditionally dissected components; in fig. 8 is a section d-d in FIG. 2; in fig. 9 shows section EE of FIG. eight; in fig. 10 is a view of FIG. eight; in FIG. 11 section 3-3 in FIG. eight.

The device consists of a base made of one-on-one plates 1 and 2, on which rounded stops 3 with plates 4 on their top are fixed by welding. Plates 1 and 2, after tensioning the reinforcement, are fastened together, for example, by welding, and on the upper part of the stops 3, plate yakladka 5 is attached to the plates 4.

At the ends of the plates 1 and 2 in the places of application of the compressive load fixed base plates 6, which are also bonded to the plates 4. To increase the length of welds on the inner end of the plate 1, cutouts 7 are made. Plates 1 and 2 are fixed coaxially to the stops 3 supporting bars 8, reinforced by ribs 9 and clamping pads 10 with tightening bolts 11 are installed between the stops 3 and the strips 8. The plate 2 has a leveling pad 12 equal to the thickness of plate 1. In view of the fact that pyaastinas 1 and 2 of the tensioning device of eight converging in tvey compressed reinforcement increased load, the supporting plate 6 the device 13 attached to the ribs.

The tension of the flexible reinforcement is produced as follows.

The flexible reinforcement loops 14 are fixed on the rounded stops 3, and the free ends of the reinforcement are fixed by means of anchors 15 in the nodes of a block of a rod building structure subjected to prestressing by tensioning the reinforcement 14, while clamping pads 10 are diluted so that they do not prevent the reinforcement from moving around the stops 3. After that to the reference

757667 4

The plates 6 are subjected to a compressive load, as a result of which the plates 1 and 2 move towards each other and produce a tension of the reinforcement 14, while due to the possibility of moving the loops of the reinforcement around the stops 3, the tension forces are equalized in all the converging branches of the reinforcement. After the reinforcement tension has been reached, the plate _{0 0} ting 1 and 2 are connected by placing welds 16 directly onto these plates and connecting the lining 5 with the plates 4. At the same time, they fix the reinforcement loops on the stops 3 by tightening the bolts 11 and pressure pads 10 To increase the rigidity of the device in a stressed state, along its contour, the strips 17 are welded.

Claims (2)

Claim 1. Device for tensioning flexible reinforcement, containing ₂₀ base with rounded stops for fastening reinforcement loops, characterized in that, in order to ensure the possibility of tensioning high-strength reinforcement, it is provided with support strips, ₂₅ is coaxially fixed on the basis of the stop and the pressing pads mounted between the abutments and the slats, and the base is in the form superimposed plates attached to one another after valves ₃₀ spanned zheniya. 2. Device lo π. 1, characterized in that, in order to increase its strength, it is provided with a plate lining attached to the upper part of the stops, and ₃₅ base plates mounted on the ends of the base plates in places of application of the load.