Steel-concrete combination section structure of steel main tower or steel main arch

Abstract

The invention discloses a steel-concrete combination section structure of a steel main tower or steel main arch, comprising a steel main tower and a concrete structure, wherein a shearing force stud is arranged between the connector end part of the main tower and the connector end part of the concrete structure, the connector end part of the main tower is provided with a steel main tower pressure-bearing steel plate, a concrete core is arranged in the section of the steel main tower, which is close to the connector end, so as to form a transition section transiting from the steel main tower to the concrete structure, the shape of the section of the connector end part of the main tower is smaller than that of the section of the connector end part of the concrete structure, one section of the steel main tower is embedded in the concrete structure, an extended limb extending outwards along the section shape is arranged on the embedded section of the steel main tower, and the extended limb is a rectangular or trapezoidal stiffening steel plate and is provided with a shearing force stud. The invention ensures that the steel main tower is embedded in the concrete structure with reasonable depth on the basis of remarkably enhancing the stress performance of the steel-concrete combination section and solves the technical problem of poor fatigue resistance of the steel-concrete combination section in the prior art.

Description

technical field [0001] The invention relates to a structure of a steel-concrete joint section, in particular to a structure of a steel-concrete joint section of a cable-stayed bridge, a steel main tower of a suspension bridge or a steel main arch of an arch bridge. Background technique [0002] When the main tower of a cable-stayed bridge or suspension bridge adopts a steel main tower, and the main arch of an arch bridge adopts a steel main arch, the joint section between the steel main tower of a cable-stayed bridge or a suspension bridge and the concrete tower shoe or concrete cap, or the steel main arch of an arch bridge and the concrete arch The connecting joint section of the seat is both a steel-concrete joint section. For the all-steel main tower, the steel main tower is directly connected to the concrete structure of the foundation. Due to the different material properties on both sides of the steel-concrete joint section, the stiffness and strength change suddenly h...

AI Technical Summary

Problems solved by technology

In the present invention, by arranging extension limbs and adding shear studs on the side of the steel main tower, on the basis of significantly improving the mechanical performance of the steel-concrete joint section, the depth of the steel main tower embedded in the concrete structure is reasonable, thereby solving the problem. There is a technical problem of poor fatigue resistance of the steel-concrete joint section in the technology, and it has laid a technical foundation for the design of similar structures in the future. The present invention has very important practical significance

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