Novel connecting structure capable of achieving replacement of steel coupling beams

Abstract

Provided is a novel connecting structure capable of achieving replacement of steel coupling beams. An energy dissipation beam section end board and a non-energy dissipation beam section end board are arranged at the connecting ends of an energy dissipation beam section and a non-energy dissipation beam section respectively, a shear key is arranged on the energy dissipation beam section end board, a key slot is formed in the position, corresponding to the shear key on the energy dissipation beam section end board, on the non-energy dissipation beam section end board, bolt holes connected with a high-strength bolt are further formed in the corresponding positions of the energy dissipation beam section end board and the non-energy dissipation beam section end board, the shear key bears the shearing force of the position where the energy dissipation beam section and the non-energy dissipation beam section are connected, and the high-strength bolt bears the bending moment of the position where the energy dissipation beam section and the non-energy dissipation beam section are connected. The novel connecting structure is reliable in force transmission under the action of a strong earthquake and is convenient to disassemble after the strong earthquake happens, fast replacement of the energy dissipation beam section can be ensured, the coupling beams can be repaired fast, and consequently the capacity of post-earthquake function fast recovery of high-rise building structures is improved.

Description

technical field [0001] The invention relates to the field of construction engineering and anti-seismic technology of structures, in particular to a novel connecting structure of replaceable steel connecting beams. Background technique [0002] High-rise and ultra-high-rise buildings are one of the main architectural forms of modern cities, and shear wall structure or frame-shear wall structure is a structural system widely used in high-rise buildings. Coupling beams are energy-dissipating components of shear wall structures or frame-shear wall structures. However, due to their small span-to-height ratios, reinforced concrete coupling beams are prone to shear failure, have poor deformation and energy dissipation capabilities, and are difficult to repair after earthquakes. In recent years, a replaceable steel connecting beam has been proposed, which consists of a replaceable energy-dissipating beam section (or damper) in the middle of the span and non-energy-dissipating beam s...

AI Technical Summary

Problems solved by technology

The welding connection is reliable in force transmission, but it is not detachable, and cannot meet the replacement requirements of the energy-dissipating beam section (or damper) after the earthquake

The bolted connection is detachable, but due to the large shear force and bending moment at the connection, a large number of high-strength bolts need to be laid out. However, in actual engineering, due to the limited connection surface, the arrangement of bolts is difficult or even impossible.

Previous experimental studies have also shown that even if friction-type high-strength bolts are used for connection, under the reciprocating action of a large earthquake, bolt slippage at the connection may also occur

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