Existing coupling beam partial cutting and re-reinforcing method and a reinforcing structure

Abstract

The invention discloses an existing coupling beam partial cutting and re-reinforcing method and a reinforcing structure. The method comprises the following steps that S1, a section of part in the middle of the coupling beam is firstly cut off; S2, the end face of the cut-off position is polished to be flat, and chamfers are cut on the edge of the end face; S3, a fixing steel cylinder is installed at the outer end of one section of coupling beam; and S4, the fixing steel cylinder is arranged on the other section of the coupling beam in a sleeving mode but is not fixed temporarily, a fixing base of a damping and buffering shock absorption mechanism is fixedly installed on the fixed fixing steel cylinder, and then the complete damping and buffering shock absorption mechanism is assembled. After reinforcement, the overall rigidity, the anti-shearing capacity and the anti-torsion capacity of the coupling beam are comprehensively improved, when the coupling beam is subjected to destructive energy, the internal damping buffer shock absorption mechanism can buffer and absorb most energy, the high-strength X-shaped anti-shear profile ensures the anti-shear capacity of the coupling beam, the reinforced crumple connecting plate can crumple and absorb energy under the impact load, and the torque in different directions can be effectively absorbed by adopting an anti-torque mechanism with the double-layer design.

Description

technical field [0001] The invention relates to the technical field of building reinforcement, in particular to a method for cutting and re-reinforcing part of an existing connecting beam and a reinforcement structure. Background technique [0002] Coupling beam refers to the connection between wall pier and wall pier in the shear wall structure and frame-shear wall structure, and the coupling beam refers to the beam whose two ends are connected with the shear wall in the plane. Coupling beams generally have the characteristics of small span, large section, and high stiffness of the wall connected to the coupling beam. Generally, under the action of wind load and earthquake load, the internal force of the coupling beam is often very large. [0003] Reasonably designed reinforced concrete shear wall structure system under rare earthquake action, the reinforced concrete coupling beam first yields, and then dissipates the energy input by the earthquake under the action of recip...

AI Technical Summary

Problems solved by technology

[0004] At present, although the reinforcement devices such as oblique braces and herringbone braces used in the coupling beams of high-rise buildings can improve the stiffness and bearing capacity of the coupling beams to a certain extent, it has been found through previous earthquake damage analysis and a large number of literature studies that in rare Under the repeated action of earthquakes, the ductility and energy dissipation capacity of high-rise building coupling beams under the existing support forms, especially the frame core tube coupling beams, are limited, and their ductility and energy consumption reserve capacity still need to be further improved

Images