A beam-column joint of energy-dissipating steel structures with replaceable combined steel plates

Abstract

The invention discloses a replaceable composite steel plate energy dissipation steel structure beam-column joint. The steel structure beam-column joint comprises a steel column (1), an end-column short beam section (2), an ear plate (3), a hinge pin (4), a main beam (5) and upper and lower composite steel plates (6); the steel column (1) is connected with one end of the end-column short beam section (2), the main beam (5) is hinged to the end-column short beam section (2) through the ear plate (3) and the hinge pin (4), and the upper and lower composite steel plates (6) and the end-column short beam section (2) and the main beam (5) are tightly connected into a whole. According to the beam-column joint, stress is reasonable and definite, the situation that structural deformation and energy dissipation are concentrated on the composite steel plates can be achieved under the rare earthquake action, only the composite steel plates enter plastic energy dissipation, the rest part and the structure body are within the elastic range, and rapid restoration of the whole function of the structure can be achieved by replacing the composite steel plates (6) after the earthquake action.

Description

technical field [0001] The invention belongs to the technical field of building structures and relates to a beam-column node of an energy-dissipating steel structure with replaceable combined steel plates. Background technique [0002] Steel structure has a series of advantages such as high strength, light weight, good seismic performance, fast construction speed, low foundation cost, small occupied area, high degree of industrialization, beautiful appearance, etc. Compared with concrete structure, it has the advantages of environmental protection and reusability , is also a structural type that is easy to industrialize. The connection node between the beam and the column is a key component to ensure that the beam and the column work together to form a structural whole. Although the beam-column joints have been greatly optimized and improved in recent years, showing superior seismic performance, but because the seismic design idea is based on the formation of plastic hinges...

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Problems solved by technology

[0004] At present, many scholars have set various forms of replaceable components at the beam-column joints of the frame structure system, but the research mainly focuses on setting the beam-column joints as replaceable components or setting up replaceable dampers at the beam-column joints. On the one hand, the replaceable components have insufficient energy dissipation capacity, and on the other hand, it is difficult to concentrate the deformation and damage of the structure on the replaceable components.

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