High Damping Steel Concrete Frame

Abstract

The invention provides a high-damping steel reinforced concrete frame which comprises a plurality of section steel columns. Each section steel column is fixedly connected with a plurality of beam section steel arc connection sections which extend horizontally. The high-damping steel reinforced concrete frame is characterized in that each beam section steel arc connection section comprises an expansion section, a weakening section and a uniform section part which extend horizontally in sequence from the corresponding section steel column; the expansion sections gradually become wider from the weakening sections to the section steel columns, the weakening sections are formed by weakening the section steel columns from the flanges to the centers in an arc mode, and a cross beam is connected between two corresponding weakening sections. According to the high-damping steel reinforced concrete frame, the arc weakened parts are arranged on the flanges of the beam section steel arc connection sections, a plastic hinge at the joint moves outwards, nonlinear deformation of a plastic hinge area is prevented from damaging a core area of the joint, cracking of concrete of the core area is avoided, and shear capacity of the core area is improved.

Description

technical field [0001] The invention relates to the technical field of steel-concrete composite structures, in particular to a high-damping steel-concrete frame. Background technique [0002] Steel concrete joints have good ductility and energy dissipation capacity. However, under earthquake action, the plastic hinge area of ​​steel concrete joints generally occurs at the beam end, and the nonlinear deformation of the plastic hinge area at the beam end penetrates into the core area of ​​the joint, which may easily increase the stress of the beam-column joint weld and cause weld fracture; in addition, the beam The penetration of the non-linear deformation in the end plastic hinge area to the core area of ​​the joint is also likely to cause cracking of the concrete in the core area of ​​the joint and reduce the shear resistance of the concrete in the core area of ​​the joint. Contents of the invention [0003] A brief overview of the invention is given below in order to pro...

AI Technical Summary

Problems solved by technology

However, under the action of earthquakes, the plastic hinge area of ​​steel concrete joints generally occurs at the beam end, and the nonlinear deformation of the plastic hinge area at the beam end penetrates into the core area of ​​the joint, which will easily increase the stress of the beam-column joint weld and cause weld fracture; in addition, the beam The penetration of the non-linear deformation of the plastic hinge area at the end to the core area of ​​the joint is also likely to cause cracking of the concrete in the core area of ​​the joint and reduce the shear capacity of the concrete in the core area of ​​the joint.

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