A steel-concrete composite beam-slab structure for small bridges and culverts

Abstract

The invention relates to a steel-concrete combined beam plate structure for a small bridge culvert, and belongs to the technical field of bridge engineering. The structure solves the problems that the connection of the existing bridge beam is complex and the sliding is easy to generate between concrete and a steel bridge faceplate. The structure adopts the technical schemes: the structure comprises a connecting seat, and a steel-concrete combined bridge culvert faceplate of which both ends are arranged above the connecting seat, wherein the structure of the steel-concrete combined bridge culvert faceplate comprises a steel bridge faceplate, more than two sets of U-shaped ribs which are arranged below the steel bridge faceplate in parallel along the axial direction; grooves matched with the U-shaped ribs are formed in the connecting seat. The structure has the beneficial effects that the steel-concrete combined bridge culvert faceplate is adopted, the grooves matched with the U-shaped ribs are formed in the connecting seat, so that the structure is simple, the weight is light, the mounting is convenient, and the mechanical property is good; the phenomenon of sliding or disengagement between the concrete and the steel bridge faceplate of a grid structure formed by steel nets and the steel bridge faceplate cannot be generated, so that the structure is particularly suitable for small bridge beams; anchoring holes which are connected with a bridge abutment or a cover beam are formed in the connecting seat, so that the positioning and the connection are convenient and fast, and the bridge culvert faceplate can be prevented from sliding to the ground.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, in particular to a steel-concrete composite beam-slab structure of a small bridge and culvert with simple structure, light weight and good mechanical properties. Background technique [0002] In order to solve urban traffic jams, reduce the number of urban traffic lights, and improve the traffic capacity of urban roads, it is necessary to improve the existing urban crossings and set up three-dimensional traffic at the intersections. To erect three-dimensional traffic at branch road crossings, firstly, the road occupation time should be short; secondly, the thickness of beams and slabs should be compressed as much as possible to shorten the length of the approach road and provide the clearance height of the culvert; thirdly, it must be assembled in order to reduce the impact on Interference with normal city operations. [0003] Therefore, a steel-concrete composite bridge with light we...

AI Technical Summary

Problems solved by technology

However, due to the different expansion coefficients of concrete and steel bridge decks, the connection between the two is likely to be weak. When the temperature difference is large, under the action of load, relative slippage between concrete and steel bridge decks is likely to occur, resulting in a decrease in strength and other defects. as a result of

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