Monolithic Truss Ring Pedestrian Bridge

Abstract

The invention discloses a single-piece joist type annular passenger overcrossing. The single-piece joist type annular passenger overcrossing comprises a single-piece annular truss girder and a plurality of suspension arm transverse ribs, wherein the suspension arm transverse ribs are connected by an annular tie rod to form a low bearing type structure for supporting a bridge deck slab. According to the single-piece joist type annular passenger overcrossing, a lot of problems of current conventional annular steel box girder overcrossings are solved; the single-piece joist type annular passenger overcrossing has the advantages of simple structure, reasonability in stressing, economic manufacturing cost, convenience in building and maintaining, comfort in use, attractive appearance and the like, has relatively high economic and social values and is a novel overcrossing structure worthy of being popularized and used.

Description

Technical field [0001] The invention relates to a pedestrian bridge, in particular to a monolithic truss-shaped annular pedestrian bridge. Background technique [0002] The amount of urban pedestrian overpass construction is huge, requiring simple structural form, fast construction, good landscape and economical cost; steel box girder structure is the most commonly used main girder structure of overpass at this stage due to its high rigidity and mature construction technology. "National Building Standard Design Atlas. Urban Road-Pedestrian Bridge" is for design and construction; however, the steel box girder structure also has the following problems: [0003] (1) The ability of steel box girder bridges to adapt to span changes is relatively weak; general steel box girder structures are suitable for circular cross-street bridges with small spans, and more piers are arranged under the bridge; due to road traffic layout, underground pipe network, plot planning, etc. The reason is tha...

AI Technical Summary

Problems solved by technology

[0003] (1) The ability of steel box girder flyovers to adapt to span changes is weak; general steel box girder structures are suitable for ring-shaped overpasses with small spans, and there are many piers under the bridge; due to road traffic layout, underground pipe network, plot planning, etc. The reason is that the layout of bridge piers is inevitably limited. When the structural span needs to be increased, the girder height of the steel box girder will be increased, which will lead to a series of problems such as increased engineering cost, raised bridge deck, increased stairways, and reduced user comfort. question;

[0004] (2) The steel box girder overpass is a closed box-shaped space welded by multiple plates, and the welding workload is relatively large. Due to the small internal space, the welding operation in the box is inconvenient, and the quality of the weld seam is not easy to guarantee; at the same time, the closed box-shaped space It also leads to many inconveniences such as maintenance, testing, and maintenance in the later stage, and it is difficult to guarantee the durability of the structure;

[0005] (3) The steel box girder flyover is manufactured in sections in the factory and transported to the site for installation. Due to the large volume of the box girder, its transportation and installation require high equipment and have a great impact on road traffic;

[0006] (4) Pedestrian bridges are mostly located in urban centers with dense traffic and people, and should have a certain landscape function, while steel box girder bridges have a single form and poor landscape

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