RU2297491C2 - Device for bridge span structure protrusion - Google Patents

Abstract

FIELD: methods or apparatus specially adapted for erecting or assembling bridges by translational movement of the bridge or bridge sections.

SUBSTANCE: device comprises building berth for bridge span structure sections assemblage, pushing means, fixed protruding means and side movement limiting means cooperating with lower sheet of main span structure beams. Main beam defining radius curve in plane is supported by fixed protruding means. Movable protruding means, which may be displaced in transversal direction, are installed on bridge piers in area of another main beam supporting, wherein the main beam has curvilinear section defined in plane, which differs from above radius curve. The movable protruding means are made as transversal bearing beams with guiding means adapted to receive movable support section bearing ball support section. The ball support section carries sleeve bearing cooperating with lower sheet of main beam. The sleeve bearing is made as tangential support section resting upon ball support section and having upper balancer. Connected to upper balancer is frame having longitudinal beams made as balancing beams. Transversal beams of the frame are provided with side thrusts formed on cantilever parts thereof to cooperate with lower sheet of main span structure beam.

EFFECT: possibility to protrude span structures having varying curvature in plane and different main beams axes spacing.

2 cl, 5 dwg

Description

The invention relates to bridge construction and can be used for longitudinal sliding of the bridge span.

A device for the longitudinal slide of the bridge span, including the slipway for the assembly of sections of the span, the pushing device and mounted on the bridge supports knurling devices with lateral movement limiters, interacting with the bottom sheet of the main beams of the span / 1 /.

A disadvantage of the known device for sliding the span of the bridge is the impossibility of longitudinal sliding of the spans, the main beams of which have a variable curvilinear shape in plan and different center distance.

Also known is a sliding support for sliding the superstructure of the bridge, containing a caterpillar frame that can compensate for lateral displacement of the superstructure / 2 /.

The disadvantage of this sliding support is the ability to slide only the main beams of the H-shaped section, as well as compensation for lateral displacement of the span within the limits laid down in the design of the gaps.

The objective of the present invention is to remedy the aforementioned drawback and provide a slide for spans with variable curvature in plan and different center distance of the main beams.

The problem is solved due to the fact that in the device for longitudinal sliding of the bridge span structure, including the slipway for assembling sections of the span structure, the pushing device and stationary rolling devices and lateral movement limiters mounted on the bridge supports, interacting with the lower sheets of the main span beams, the main span beam with a radial curve in plan, supported by stationary knurling devices, and bridge supports in the bearing area of another main alky having a curvilinear outline in plan, different from the radius curve, equipped with movable in the transverse direction rolling devices made in the form of transverse support beams with guides, in which a movable supporting part is mounted, on which a spherical supporting part bearing a sliding support interacting with bottom sheet of the main span beam.

The sliding support can be made in the form of a tangential support part, on the upper balancer of which a frame is mounted, the longitudinal beams of which are made in the form of balancing beams, and the transverse beams of the frame have lateral stops on the console sections - lateral movement stops interacting with the lower sheet of the main beam of the span .

Figure 1 shows the superstructure span, top view.

Figure 2 shows the superstructure span at the beginning of the slide, cross section, view along AA.

Figure 3 shows the superstructure span after the end of the slide, view along AA.

Figure 4 shows the rolling in the transverse direction of the knurling device, view B.

Figure 5 shows the slide bearing, a view along BB.

The span 1 has a curved shape in plan with a variable center distance of the main beams. One of the main beams 2 of the span 1 has in plan a shape of a radius curve, and the other main beam 3 has a curve shape different from the first. The span structure 1, equipped with an outback 4, is assembled on the slipway 5. The assembled part of the span structure 1 is pushed cyclically onto the bridge supports 7 with the help of pushing devices 6. On the bridge supports 7 in the places of abutment of the main beams 2 stationary knurling devices 8 and lateral movement limiters 9 are installed On the supports of the bridge 7 at the points of abutment of the main beams 3 installed rolling in the transverse direction of the rolling device, made in the form of transverse support beams 10 having guides 11 and the bearing surface 12, on which along the entire length, a slide 13 is laid out on which a movable support 16 is mounted through the slide 14 and the rubber support part 16. A ball support part 17 is mounted on the movable support 16, on which the sliding support rests, made in the form of an upper balancing plate 18, combined with the lower balancer 19 of the tangential support part 20. On the upper balancer 21 of the tangential support part 20, a frame 22 is mounted, consisting of longitudinal beams 23 and transverse beams 24, on the cantilever parts 25 of which side stops 26 are mounted, interacting with the lower him sheet of the main beam span 1.

The longitudinal slide of the superstructure 1 is as follows.

The sliding of the assembled sections of the superstructure 1 is carried out in stages with the help of pushing devices 6 as they are assembled on the slipway 5. In the process of sliding, one of the main beams 2, having a radius of curvature in plan, moves along the rolling devices 8 fixed on the bridge supports 7, and the other the main beam 3, having a curvature in plan other than the radial curvature, moves along the longitudinal beams 23 attached through the frame 22, the tangential support part 20 and the ball support part 17 to the movable support 16, while the limiter and lateral movement 9, in contact with the bottom sheet of the main beam 2, provide movement of the span 1 along the radius curve, and at the end of the slide - its design position. Side stops 26 in contact with the bottom sheet of the main beam 3, determine the position in terms of longitudinal beams 23 through the use of spherical support parts 17 and the movement of the movable supports 16 along the transverse support beams 10 due to the rigidity of the upper plate span 1.

The proposed device for the longitudinal slide of the span 1 allows you to push the spans having the main beams of a complex curved shape in plan with a variable center distance.

Information sources

1. A.V. Kruchinkin, V.K. White. Installation of steel spans for bridges. M., "Transport", 1978, pp. 170-201.

2. Japan Patent No. 3426849, cl. E 01 D 21/00, application JP 1966 122936 05/17/1996, patent holder - Mitsubishi Heavy Ind. Ltd.

Claims (2)

1. A device for longitudinal sliding of the bridge span structure, including a slipway for assembling sections of the span structure, a pushing device and stationary knurls mounted on bridge supports and lateral movement limiters interacting with the bottom sheet of the main span beams, characterized in that the main beam of the span structure having a radial curve in the plan, is supported by stationary knurling devices, and on the bridge supports in the abutment area of another main beam having a curvilinear a different outline from the radius curve, transverse rolling devices mounted in the form of transverse support beams with guides in which a movable support part is mounted, on which a ball support part bearing a sliding support interacting with the bottom sheet of the main beam is mounted . 2. The device according to claim 1, characterized in that the sliding support is made in the form of a tangential support part resting on the ball support part, on the upper balancer of which a frame is reinforced, the longitudinal beams of which are made in the form of balancer beams, and the transverse beams of the frame are on cantilever sections lateral stops interacting with the bottom sheet of the main beam of the span.

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