RU2338828C2 - Bridge bearing - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: bridge bearing includes bottom support plate, bottom and top beams with response spherical surfaces and antifriction material installed on them, and top support plate. The novelty consists in the fact that along bridge axis in horizontal support planes of bottom support plate and bottom beam coaxial grooves are arranged, in which guiding key is located, which is installed with clearance in groove of bottom plate and rigidly fixed in the groove of bottom beam. Lower support plate and bottom beam are equipped with gussets, in which openings are provided with different pitch, and fixing rods installed in these openings. Bottom support plate has detachable limiters of longitudinal travel of bottom beam.

EFFECT: improvement of bridge bearing properties.

3 cl, 4 dwg

Description

The invention relates to construction and can be used in the construction of the supporting parts of bridges and other structures.

Known support part of the bridge, including the lower anchor plate, lower and upper balancers with counter spherical sliding surfaces and antifriction material located on them, the central kingpin passing through the upper and lower balancers, and the upper base plate / 1 /.

A disadvantage of the known supporting part of the bridge is the impossibility, if necessary, of turning it into a longitudinally movable one.

The present invention is the creation of a universal supporting part, which at the construction site can be easily converted into a longitudinally movable, and in a stationary supporting part.

The problem is solved due to the fact that in the supporting part of the bridge, including the lower base plate, the lower and upper balancers with counter spherical surfaces with antifriction material located on them and the upper base plate, along the axis of the bridge in the horizontal supporting planes of the lower base plate and lower balancer coaxial grooves are made, in which a guide key is located, which is located with a gap in the groove of the lower base plate and is rigidly fixed in the groove of the lower balancer, the lower base plate and the lower The balancer is equipped with gussets in which holes are made with different steps and fixing pins installed in these holes, and the lower plate has removable limiters for the longitudinal movement of the lower balancer. In addition, the contact surfaces of the lower base plate and the lower balancer are equipped with polished metal sheet and antifriction material, respectively, and the holes in the shapes of the lower base plate and in the shapes of the lower balancer are offset relative to each other along the axis of the bridge.

Figure 1 shows the supporting part, a section aa.

Figure 2 shows the supporting part of the bridge, a top view (the upper part is a section along BB).

Figure 3 shows the supporting part of the bridge, a section along BB (at the operation stage).

Figure 4 shows the supporting part of the bridge, a section along BB (at the installation stage at maximum displacement).

The supporting part of the bridge includes a lower base plate 1, rigidly fixed to the head of the support, lower 2 and upper 3 balancers with mating spherical surfaces 4 with antifriction material located on them. The upper base plate 5 is supported on the upper balancer 3 by means of a polished metal sheet and antifriction material, on which, in turn, the bridge span is supported. In the horizontal supporting planes of the lower base plate 1 and the lower balancer 2, coaxial grooves are made along the axis of the bridge, in which the guide key 6 is located, which is installed with a gap in the groove of the lower base plate 1 and is rigidly fixed in the groove of the lower balancer 2. The lower base plate 1 and the lower balancer 2 is provided on the sides with gussets 7 and 8, in which holes 9 are made with different steps. The holes 9 in the gussets 7 and 8 are offset relative to each other along the axis of the bridge. In the holes 9 of the gussets 7 and 8, the fixing pins 10 are placed, which allows the linear-movable support part to be turned into a stationary part in the process of work. The lower base plate 1 is equipped with removable stops 11 for longitudinal movement of the supporting part of the bridge. The contact surfaces of the lower base plate 1 and the lower balancer 2 are provided with a polished metal sheet and antifriction material.

The supporting part of the bridge works as follows. In the initial period, removable stops 11 are installed on the lower base plate 1 and the supporting part works as a fixed one, while angular displacements of the bridge span are possible due to displacement of the upper balancer 3 with the upper base plate 5 on the spherical surface 4, if necessary, for example, in the process installation of the span, dismountable removable stops 11, thereby turning the supporting part into a longitudinally movable. When the span is exposed to temperature or other loads, the lower balancer 2 moves along the guide key 6 together with the upper balancer 3, the upper base plate 5 and the span resting on it by the value D, before aligning the axes of the holes 9 of the chamfers 7 and 8. After that the supporting part can be temporarily turned into a fixed one by installing the fixing pins 10 in the coaxial holes 9.

The proposed supporting part of the bridge allows you to accelerate the pace of installation of the span due to the rapid restructuring of the fixed supporting part in the moving and vice versa.

Information sources

1. RF patent No. 2235821, class. Е01D 19/04, priority November 19, 2003, patent holder of JSC Institute Giprostroymost.

Claims (3)

1. The supporting part of the bridge, including the lower base plate, the lower and upper balancers with mating spherical surfaces with antifriction material located on them and the upper base plate, characterized in that coaxial grooves are made along the axis of the bridge in the horizontal supporting planes of the lower base plate and the lower balancer in which there is a guide key installed with a gap in the groove of the lower plate and rigidly fixed in the groove of the lower balancer, the lower base plate and lower balancer provided with gussets in They are made with different pitch of the hole, and the fixing pins installed in these holes, and the lower base plate has removable limiters for the longitudinal movement of the lower balancer. 2. The supporting part of the bridge according to claim 1, characterized in that the contact surfaces of the lower base plate and the lower balancer are equipped with a polished metal sheet and antifriction material. 3. The supporting part of the bridge according to claim 1, characterized in that the holes made in the shapes of the lower base plate are offset along the axis of the bridge relative to the holes made in the shapes of the lower balancer.

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