RU2266996C2 - Bridge reinforcement device - Google Patents

Abstract

FIELD: building, particularly artificial structure construction and repair, namely reinforcement devices for composite bridge structures.

SUBSTANCE: device includes strand bundles, rests, anchoring members and fastening pins to connect the rests to beam. The device comprises additional rest having plate, which cooperates with end beam part and pre-stressed control rods fastened to plate and pins correspondingly.

EFFECT: increased load-bearing capacity and reliability of the bridge, reduced costs of bridge maintenance.

2 dwg

Description

The proposal relates to the construction and repair of artificial structures, mainly steel-reinforced concrete bridge structures, namely, bridge reinforcement devices.

A device for strengthening the bridge, including bundles of strands, anchor elements, stops, studs, fastening stops to the beam [1].

However, the known devices have the following disadvantages.

During the operation of the bridge, uneven dynamic loads act on the studs, which cause microcracks in the concrete surrounding the stud. In this case, the end part of the beam is unloaded. All this reduces the load capacity and reliability of the bridge and increases the cost of its operation.

The technical result, the achievement of which this technical solution is aimed, is to increase the load capacity and reliability of the bridge and reduce the cost of its operation.

This result is achieved due to the fact that the bridge reinforcing device, including bundles of strands, anchor elements, stops, studs for attaching the stops to the beam, is equipped with additional stops consisting of plates interacting with the end part of the beam and fastened to the prestressed plates and studs, respectively rods.

Figures 1 and 2 show a bridge reinforcement device (top and side views, respectively).

The bridge reinforcing device includes bundles of strands 1, stops 2, anchor elements 3, studs 4 for attaching the stops to the beam 5. The device is equipped with an additional stop, consisting of a plate 6 interacting with the end part of the beam and fastened together with the plate 6 and the studs 4 7. Traction 7 can be made integral (in the form of a plate 8 and welded on the lining 9).

When installing the device, holes are pre-drilled in the beam and the plates are fixed with pins 8. Then, plate 6 is mounted on the end of the beam 1 (previously making a technological hole in the bridge (if necessary)) and fastened by welding with plates 9, which are then welded with plates 8, forming rods 7. When welding, the rods 7 are heated, and when they are cooled, their prestress occurs. Then the technological hole is poured with concrete.

When installing an additional stop, the end of the beam is stressed. At the same time, its load capacity increases, the probability of concrete destruction around the stud decreases.

Thus, this technical solution will allow:

- increase the load capacity of the bridge;

- increase the reliability of the bridge;

- reduce the cost of operating the bridge.

Sourse of information

1. Certificate for utility model of the Russian Federation No. 33961, MKI E 04 C 5/16 of 07/10/2003.

Claims (1)

A bridge reinforcing device, including bundles of strands, stops, anchor elements, studs for attaching the stops to the beam, characterized in that it is equipped with an additional stop consisting of a plate interacting with the end part of the beam and connected to the plate and studs with prestressed rods.

Images