An energy-dissipating beam-column joint for building steel structures

Abstract

The invention relates to an energy dissipation beam column joint for a building steel structure. The energy dissipation beam column joint comprises a frame beam column, T-shaped connection parts, a viscous friction damper, a small I-shaped steel connection part, a metal energy dissipation bar and the like. Connection of the beam end comprises the upper T-shaped connection part, a frame beam, the small I-shaped steel connection part, the viscous friction damper and the lower T-shaped connection part. Except that the viscous friction damper and the small I-shaped steel connection part as well as the lower T-shaped connection part are bonded through strong glue, the others are all connected through high-strength bolts. The upper T-shaped connection part and the lower T-shaped connection part are connected with the frame beam through high-strength bolts. The whole metal energy dissipation bar penetrates through the lower flange of the frame beam to the lower T-shaped connection part and is fixed through a nut. When horizontal seismic force is small, the viscous friction damper can provide certain lateral resisting stiffness. When horizontal seismic force is large, relative sliding occurs to all layers of the viscous friction damper, the metal energy dissipation bar is driven to be subjected to bending deformation, joint energy dissipation is achieved, and a mixed energy dissipation system is formed. The energy dissipation beam column joint is simple in structure, significant in energy dissipation and seismic mitigation effect and suitable for various connection positions and does not occupy additional space.

Description

technical field [0001] The invention belongs to the anti-seismic field of building steel structures, and in particular relates to an energy-dissipating beam-column node for building steel structures. Background technique [0002] In recent years, passive control technology in earthquake protection engineering has been widely used in civil engineering at home and abroad because of its low cost and significant shock absorption effect, among which energy dissipation and shock absorption technology is the most common. There are two main methods of energy dissipation and shock absorption: one is to dissipate energy through the deformation of the structural members themselves, that is, to weaken the flexural bearing capacity of some beam areas, so that plastic energy dissipation occurs first in this area, and the purpose of energy dissipation and shock absorption is achieved. However, due to the plastic damage area of ​​the main structure in this way, it will bring great difficult...

AI Technical Summary

Problems solved by technology

However, due to the plastic damage area of ​​the main structure in this way, it will bring great difficulties to the repair after the earthquake, and at the same time, the repair of this structure after the earthquake will bring huge economic losses

The other is to dissipate the seismic energy by setting additional energy-dissipating and shock-absorbing devices. The common ones are metal dampers, viscous dampers, and tuned mass dampers. Although this method can overcome the shortcomings of the first method, the This method will take up a lot of space and may affect architectural requirements

Images