SU763544A1 - Support with reinforced concrete attachments - Google Patents

Description

NIKI. Another significant disadvantage of the known constructions of attachments is the inadequate protection of nx from electrical corrosion and the short service life resulting from this.

The aim of the invention is to increase the bearing capacity and durability of the structure while reducing its deformation.

This goal is achieved by the fact that in the well-known support with reinforced concrete attachments having a stand, the above-ground part of the attachments connected to the rack by means of tightening elements and the underground part, the above-ground part of the attachments is made in the form of semi-strikes, covering the rack, with openings for the clamping bolts , shifted relative to the axis of symmetry of the support beyond the cross-section of the rack, and the underground part of the attachments is made in the form of a brand with a shelf adjacent to the rack.

To increase the durability of the structure, the attachments are reinforced with separate reinforcing bars that do not have an electrical connection between themselves and are colored with an electrical insulating composition.

To reduce the weight and consumption of materials, the shelf of the underground part is designed as a wedge.

FIG. I - a general view of a reinforced concrete support with attachments; in fig. 2 - the top view of the device (view A); in fig. 3 - the prefix of the proposed design; in fig. 4 - section BB of the above-ground part of the attachment; in fig. 5 is a section B-B of the underground part of the attachment shown in FIG. 3

The proposed device (Figs. 1, 2) is a rack 1, two attachments with aerial parts 2 in the form of half-walls covering the support column 1 and set bolts 3, and an underground part 4 of the T-section. The above-ground part 2 of the attachment (fig. 3, 4, 5) is made in the form of a half-arm having holes 5 for fastening bolts 3; underground part 4 - in the form of a brand with a wedge-shaped shelf; reinforced attachment of longitudinal reinforcement 6 and transverse reinforcement 7, which does not have electrical connection between itself and the short electrically insulating composition ..

As an electrically insulating composition, organosilicate paints and enamels or compositions based on these paints and epoxy resin can be used.

The device works as follows.

The rack 1 with the destroyed underground part is fixed with the help of temporary delays and a partial piece of soil is made on both sides of the support. Attach attachments to open pits close to support post I, fasten bolts 3 are inserted into holes 5 in the aerial part 2 attachments and tighten reinforced concrete elements, then fill the pits with soil, compact it and remove temporary drags. As a result, the support with the damaged underground part will be securely fastened.

Prefixes of the proposed design in comparison with the known ones have a number of advantages. The attachments with the above-ground part, made in the inside of the semi-rim, provide reliable fastening of the support with the destruction of the underground part, reduce the deformability of the connection of the support with the attachments.

The T-section of the underground part of the attachments allows to reduce the depth of their immersion in the ground, to ensure reliable attachment of the attachments with the stand in the ground.

Reinforcement of consoles with individual rods and their electrical insulation ensures an increase in the durability of the structure.

The use of attachments of the proposed design for strengthening supports, for example, reinforced concrete supports of the contact network of railways, will reduce the time of violation of the operating mode.

Claims (2)

Invention Formula . A support with reinforced concrete attachments, comprising a stand, an above-ground part of attachments attached to the stand by means of tightening elements and an underground part characterized in that, in order to increase the lack of ability and durability of the structure while reducing the deformability, the above-ground part of the attachments is made in the form of half strips covering the rack, with holes for the clamp bolts, are offset from the axis of symmetry of the rack beyond its cross section, and the underground part is in the form of a brand with a shelf adjacent to the rack. 2. A support with reinforced concrete attachments according to claim, characterized in that, in order to use the attachments in aggressive environments, for example, in the anode zone, they are reinforced with separate electrically unrelated rods with an electrically insulating coating. Sources of information taken into consideration prn examination 1.Vlasov I.I. and others. Designing the contact network of electrified railways. M., Transzheldorizdat, 1959, p. 222, FIG. 160 2. Getling B. V. Reading circuits and drawings of electrical installations. M., “Higher School, 1977, p. 81-83, FIG. 63, 65.