A Cellless Steel-Concrete Combined Segment Structure of a Hybrid Beam Bridge

Abstract

The invention discloses a steel-concrete combined section structure of a hybrid girder bridge, which comprises a pressure bearing plate located at the rear end of a concrete box girder, and a front shear connection structure and a rear stiffness transition structure located on the front and rear sides of the pressure bearing plate. The pressure plate is located inside the front part of the steel box girder, the section at the front of the steel box girder located on the front side of the pressure plate is the steel beam extension, and the rear section of the concrete box girder is the concrete covered in the steel beam extension In the beam cladding section, the front shear connection structure is arranged in the concrete beam cladding section and it includes open-hole steel plate connection components, multiple upper transverse penetrating reinforcements, multiple lower transverse penetrating reinforcements and multiple rear transverse penetrating reinforcements; the rear side The stiffness transition structure includes a plurality of upper longitudinal stiffeners fixed on the bottom of the steel roof and a plurality of lower longitudinal stiffeners fixed on the top of the steel bottom. The invention has the advantages of simple structure, reasonable design, convenient construction and good use effect, and the connection effect of the formed steel-concrete junction is good and the stress is reasonable.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, in particular to a cell-free steel-concrete combined section structure of a hybrid beam bridge. Background technique [0002] There are generally two types of materials for bridge girders: steel and concrete. The main girders can be divided into steel girders, concrete girders, composite girders, and hybrid girders according to the different combinations of these two materials. Composite beams are composed of steel and concrete in the cross section, which is a combination of different materials in the cross section. The composite beam means that the main beam is composed of steel and concrete along the length direction of the beam. The beam body of the main beam is a steel beam, and the beam body of the side span is a concrete beam. In hybrid girder cable-stayed bridges and other types of hybrid girder bridges, the steel-concrete combined section completes the transition from steel g...

AI Technical Summary

Problems solved by technology

In addition, the steel-concrete combination section is a composite structure, and the smooth transition of the synergistic stress and internal force between the steel and concrete materials is very important, and the uneven transition will also have a very negative impact on the bridge deck pavement

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