Double-inner-core buckling-preventive support structure

Abstract

The invention belongs to the technical field of damping of civil engineering structure and particularly relates to a double-inner-core buckling-preventive support structure used for damping by energy dissipation. Two I-shaped steel plates are bonded to be as a core energy dissipation component, two wing edge steel plates perpendicular to the I-shaped steel plates are mounted at two ends of the I-shaped steel plates, and cross sections of the I-shaped steel plates and the wing edge steel plates are H-shaped. Porous foam materials are filled on one sides, connected with the I-shaped steel plate, of the wing edge steel plates. The I-shaped steel plates and the wing edge steel plates are wrapped by outer wrapping steel pipes, a part of each wing edge steel plate extends out of the outer wrapping steel pipes, and concrete is filled into the outer wrapping steel pipes. In the double-inner-core buckling-preventive support structure, energy dissipation is realized by steel having excellent plastic deformation property, particularly soft steel, and further, higher hysteretic energy dissipation is realized by means of axial deformation of the steel. The double-inner-core buckling-preventive support structure is novel and reasonable in structure, easy to machine, convenient and flexible to use, high in applicability and capable of effectively improving anti-seismic performance of a building structure and has wide market popularization and application prospect.

Description

technical field [0001] The invention belongs to the technical field of shock absorption of civil engineering structures, and in particular relates to an energy-consuming member for building structure engineering, in particular to a double-core anti-buckling support structure for shock absorption and energy consumption. Background technique [0002] The development of today's building structures tends to be more and more tall, and the frame structure composed of steel members, composite members or reinforced concrete members is a structural form that is often used in buildings. In order to make the building structure have a strong ability to resist external damage such as earthquakes, it is often necessary to add energy-dissipating components to the frame structure. [0003] Common energy-dissipating components include viscous dampers, viscoelastic dampers, friction dampers, magnetorheological dampers, and anti-buckling supports. Among them, anti-buckling braces are widely u...

AI Technical Summary

Problems solved by technology

At present, the anti-buckling support is generally a support form with a single core. Among them, the buckling-resistant support with a straight core often has a limited yield load. If steel with a higher yield point is used, the energy dissipation performance will be weakened to varying degrees; For the anti-buckling support of the cross-shaped core, the core often needs to be welded, and the residual stress at the weld has a great influence on the fatigue performance of the core

Therefore, when it is necessary to achieve a large yield load and obtain better fatigue performance and energy dissipation performance, it is often difficult to design the inner core of the support, which greatly limits the popularization and application of buckling-resistant supports.

Images