SU1004517A1 - Unit girder bridge - Google Patents

Description

The invention relates to bridge building and can be used in non-insulated reinforced concrete bridges with the use of a continuous whip of single-span beams rigidly joined above pylons.

Known "cutting beam bridge, inclusions of the support and supported on them through the supporting parts of the continuous span of the rigidly united above the supports single-span coaxio adjacent adjacent beams, and the beams are combined by means of fixings and reinforcement outlets, which are uniformly cross-seamed, li

The disadvantage of this bridge lies in the considerable complexity of its installation due to the need to connect a large number of unifying elements of adjacent beams between each other, followed by their monolithing to the full height of the beams.

The closest to the proposed technical essence and the achieved effect is a continuous beam bridge, including the supports and supported on them through the supporting parts of the continuous span structure,. made of composite along the length and width of the bridge from single-span beams.

the edges of which have protruding beyond the vertical axes of the supports and the end sections overlapping the other,

from the ends of the edges of the beams of adjacent spans, glue joints are interconnected, cross-crimped with the help of guided elements. End sections

JQ edges of adjacent beams are located close across the entire width of the bridge, and the tension elements are made in the form of m grams passed through the ends of the edges of all beams across the width of the bridge and fixed on the edges of the outermost, bar lrk 121.

Claims (2)

The disadvantage of the known bridge lies in the increased labor intensity of their installation because of the need. at the same time fitting to each other a large number of beams with a sample of Clearances between areas of mutual overlap of edges of adjacent beams combined by means of glue joints, as well as reduced reliability of operation of such a bridge due to the possible formation of gaps between joined, edges of adjacent beams on areas of mutual overlap, more regulated 30 according to the condition of a reliable end-joint of the side edges joined on the glue. The purpose of the invention is to reduce the labor capacity of the installation and increase the reliability of the bridge. This goal is achieved by the fact that in a continuous beam bridge, including supports and supported on them through the supporting parts, a continuous ribbed span structure made of a single-span beams composite along the length and width of the bridge, the edges of which have protruding beyond the vertical axes of the supports and the overlapping end sections , with the ends of the edges of the beams of adjacent spans are interconnected by glue joints, transversely crimped with the help of tensionable elements passed through them; each end portion of the rib is ba Lines of one span are combined with the corresponding end portion of the edge of a beam of a neighboring span and are located at a distance from the end portion of the edge of a corresponding width adjacent to the bridge bridge, each tension element being located within the corresponding pair of combined edges of the beams of adjacent spans. Figure 1 shows the facade of a continuous bridge (fragment); figure 2 plan of the bridge; FIG. 3 is a section A-A in FIG. 2. A continuous beam bridge includes supports 1 and a ribbed span structure mounted on them through support parts 2, made of composite ribs, which are composite in length and width of the bridge, of single-span beams 3, the edges of which are protruding beyond the vertical axes of the supports 1 and the end sections 4 which overlap each other, moreover, the ends of the edges of the beams 3 adjacent spans are interconnected by glue joints 5, transversely crimped with the help of those passed through them; tensioned elements 6. In this case, each end section 4 of the beam edge 3 of the same span is combined with the corresponding end section 4 edge; beams 3 of the adjacent span and is located at a distance from the end portion of the edge of the corresponding adjacent width of the bridge beams, each tension element b, made for example in the form of a high-strength stud, is located within the corresponding pair of combined edges of the beams of adjacent spans. The merging of the upper plate of the beams of adjacent spans can be accomplished by docking the reinforcement outlets 7, followed by their concreting. The use of the proposed continuous bridge allows one to significantly simplify the joining of adjacent beams between each other, while at the same time increasing the reliability of the butt joints. Claims of the Incomplete Beam Bridge, including supports supported on them through supporting parts The next spans are interconnected by glue joints, cross-crimped with the help of tension elements passed through them, characterized by THU.O, in order to reduce the labor-consuming each bridge section of a single-span beam is combined with a corresponding, edge portion of the adjacent-beam edge, and is located at a distance from the end portion of the edge of the corresponding adjacent width of the bridge; pairs of joint edges of beams adjacent spans. Sources of information taken into account in the examination 1.Kriltsov E.Hi and others. Modern reinforced concrete bridges. M ;, Transport, 1974, p. 144 2. Gibshman M.E. Design of transport facilities. M., Trnnsport, 1980, p. 90-91, fig. 3.13J6 (prototype) 7 7