SU1663085A1 - Bridges - Google Patents

Abstract

The invention relates to bridge construction and can be used in the reconstruction and strengthening of bridge structures. The purpose of the invention is to provide the possibility of strengthening the operated bridges with the simultaneous replacement of worn bearing parts. The continuous beam bridge includes supports 1 and span structures 3 supported through the supporting parts 2 with split ribbed beams integrated in the supra-support sections into a continuous construction with the help of connecting elements. The connecting elements are made in the form of steel plates 4 placed on the upper surface of the beams of the superstructures 3, and channels 5 arranged vertically on both sides of the edges of the jointed beams with overlapping joints between them. Channels 5 are supported on a separate support part 6 located along the axis of support 1 and interconnected by means of strips 7 and bolts 8 that are passed under the beams. Plates 4 and channels 5 are connected by vertical prestressed bars 9, which are passed through the roadway holes. 3 il.

Description

The invention relates to bridge construction and can be used in the reconstruction and strengthening of bridge structures.

The purpose of the invention is to provide the possibility of reinforcing existing bridges while simultaneously replacing worn bearing parts.

FIG. 1 shows the facade of the support fragment of a continuous beam bridge; FIG. 2 is a section A — A of FIG. on fig.Z - section B - B in figure 1.

The continuous beam bridge includes supports 1 and span structures 3 supported through the supporting parts 2 with split and having a slab of the carriageway split beams that are combined in supra-supporting sections into a continuous construction with the help of connecting elements.

The connecting elements are made in the form of steel plates 4 placed on the upper surface of the beams of the superstructures 3, and channels 5 arranged vertically on both sides of the edges of the jointed beams with overlapping joints between them. Channels 5 are supported on a separate support part 6 located along the axis of support 1 and interconnected by means of strips 7 and bolts 8 that are passed under the beams. T g 9 preformat Oh

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are guided by threaded joints 11 with upper shelves of channels 5,

The joining of the beams of the span structures 3 into a continuous bridge is performed as follows. Along the axles of the supports 1, the supporting parts 6 are installed on which the channel bars 5 are placed. Under the beams of the superstructures 3, the strips 7 are placed and hung with bolts 8 on the channels 5 in such a way that, pushing the bolts 8 symmetrically relative to the axis of the support 1, the beams and remove the worn support parts 2. Then the holes 10 are drilled in the slab of the carriageway of the spans 3, the plates 4 and the rods 9 are installed, which are tensioned to the design effort.

The operation of the plates 4 for stretching and the channels 5 for compression is ensured by the frictional forces arising between the surfaces of the superstructures 3, the plates 4 and the strips 7 during tension 8 and 9.

The use of a continuous beam bridge allows you to reinforce the split span structures by changing the static scheme of the bridge and replace worn bearing parts without the use of additional tools.

Claims (1)

Invention Formula A continuous beam bridge, including supports and supported on them through the support parts of the superstructure with split and having a slab of the carriageway ribbed beams, combined in the supra-support sections in a continuous construction with the help of connecting, combined previously (strained, t gami, elements in the form of plates in the upper part beams and channels in their lower part, characterized in that enabling the bridges to be operated to be reinforced while simultaneously replacing worn bearing parts, the plates are placed on the upper surface of the beams, and the channels are arranged vertically on both sides of the edges of the joints beams with overlapping joints between them, supported on a separate support part located along the axis of the support, and interconnected by means of bolts and strips skipped under the beams, with the bars arranged vertically and passed through the holes formed in the slab of the roadway. V.A. hr hr figl kJ Fig2 5-6 (re.e.