SU1361225A1 - Steel-ferroconcrete bridge span structure and method of erecting same - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to bridge construction, namely to the structures of steel concrete spans and methods for their construction. The aim of the invention is to reduce the material consumption of the superstructure, the Steel-reinforced concrete superstructure of the bridge has main beams with a lower core and a wall 2, the vertical stiffening ribs of which are made in height in height from the upper 4 and lower 3 parts, blocks 5 of the carriageway slab, to which corners 6 are attached. 5 3 7 blocks fastened to the reinforcement, Longitudinal seams of blocks 5 are placed along the axes of the main beams. The upper portion 10 of the wall 2 is wound between blocks 5, which are attached to the wall 2 by high-strength bolts 8, passed through coaxial holes in the vertical shelves of the corners 6 and walls 2. When erecting the span, the main beams of the T-section, reinforced by lower parts 3 vertical stiffeners and attached in the upper part of the wall at a distance from its upper end of the inventory pair of longitudinal corners, performing during transportation and installation of the function of the upper beam. The slab blocks 5 are placed between the upper sections of the g 10 walls 2 and attached to the walls, after which the inventory corners are removed and the upper parts of the 4 vertical stiffeners are installed with their fastening to the lower parts of the 3 stiffeners, to the upper part of the wall 2 and the blocks 5 roadway plates, 2 s, n, f-ly. 5 silt, from € (L 00 O5 th tsD SL

Description

The invention relates to bridge construction, mainly to heavy duty concrete bridge spans.

The purpose of the invention is to reduce the material consumption of the superstructure.

FIG. 1 shows the layout plan of the carriageway block blocks; FIG. 2 shows a section A-A in FIG. one; Fig. 3, Node I in Fig. 1 (prior to the installation of the span slab); in fig. I the same, during the installation of the slab; in fig. 5 - the same, in the mounted state.

The steel concrete span of the bridge includes metal main beams 1 with a lower catfish (not shown), a wall 2 and vertical stiffening ribs made of composite lower 3 and top 4 parts. The beams 1 strengthened the blocks 5 forming the reinforced concrete slab of the passageway, the longitudinal seams of which are located along the axes of the main beams 1 Blocks 5 of the roadway slab have a hard reinforced skeleton from the corners 6 along the contour connected to the reinforcement 7 of the block.

. At the corners 6, the vertical shelf protrudes beyond the lower edge of block 5 and has holes coaxial with holes in the beam wall, for high-strength bolts 8 for fastening blocks 5 .. The joints of the slab blocks 5 can be overlapped. you are flat lining 9 on welding. The upper portion 10 of the wall 2 of each beam 1 is wound between the blocks 5 of the plate.

The construction of the span is carried out as follows.

The supports (not shown) establish the main beams 1 of the T-section, the wall 2 of each of which is reinforced by the lower parts of the 3 vertical stiffeners and located at the distance from its upper end of the inventory paired longitudinal corners 11 attached by means of high-strength bolts 12. The corners 11 during transportation and installation perform the function of the top along the beam 1. When mounting blocks 5 of the roadway plate, they are placed between the corresponding upper sections 10 of the walls 2 of the main beams 1, and fixing the blocks 5 of the plate made to the walls of 2 beams 1 by means of high-strength bolts 8, passed through

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cut coaxial holes in the wall 1 and the vertical shelf of the corner 6. After that, the inventory corners g 11 are removed and the upper parts 4 of the vertical stiffener are installed in the upper parts of the walls 2 of the main beams 1 with their attachment to the lower parts of the 3 vertical stiffeners , to the top of wall 2 and to the slab blocks.

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The proposed solution provides a reduction in the material consumption of the superstructure by eliminating the upper sa of the main beams.

Claims (2)

Invention Formula .one. The concrete concrete bridge span, which includes metal main beams united by transverse and longitudinal links, having a bottom wall and a wall supported by vertical stiffening ribs and reinforced concrete roadway on the main beams, assembled from blocks with longitudinal joints on the axles the main beams, each block having a rigid mortgage frame along the contour, associated with its reinforcement, characterized in that, in order to reduce the material capacity of the superstructure, The lower section of the wall of each beam is wound between the corresponding blocks of the slab, and in the wall of each beam under the slab, high-strength bolts of the slab blocks are formed under the high-strength bolts, and the vertical stiffeners are made up of the upper and lower parts in height. 2. A method for erecting an iron-and-concrete span of the bridge, including mounting the main beams onto the supports, fixing longitudinal and transverse connections on them, mounting the prefabricated block of concrete blocks of the roadway and fixing the blocks of the plate on the main beams by means of high-strength bolts distinguished by that, in order to reduce the material intensity of the superstructure, the main beams of the T-section are installed on the supports, the wall of each of which is reinforced by the lower parts of the vertical stiffeners and and at a distance from its upper end with invarted twin longitudinal brackets attached by means of high-strength bolts, and when installing blocks of reinforced concrete slab they are placed between the corresponding upper sections of the walls of the main beams, and fixing the slab blocks to the walls of the main beams beams by means of high-strength bolts, after which the inverter corners are dismantled and the upper parts of the vertical stiffeners are installed in the upper parts of the walls of the main beams with their attachment to the lower parts of the vertical stiffeners, to the upper part of the wall and to the slab blocks. FIG. 2 5 10 9 Figm