Prefabricated energy dissipation and damping beam-column joint for prestressed concrete frame

Abstract

The invention discloses a prefabricated energy dissipation and damping beam-column joint for a prestressed concrete frame. Angle steel is pre-buried in the upper corners and the lower corners of the two ends of a prefabricated beam, and a reinforcing steel plate corresponding to the angle steel is pre-buried in a prefabricated column; energy dissipation steel bar connectors are arranged on an angle steel supporting plate, perpendicular to the prefabricated column, of the angle steel, and a plurality of energy dissipation steel bar reserved hole passages penetrating through the prefabricated column in the extending direction of the prefabricated beam and corresponding to the energy dissipation steel bar connectors are formed in the prefabricated column; energy dissipation steel bars are arranged in the energy dissipation steel bar reserved hole passages, one ends of the energy dissipation steel bars are connected with the energy dissipation steel bar connectors, and the other ends of the energy dissipation steel bars penetrate out of the prefabricated column to be fixedly connected with a fixing device; and the energy dissipation steel bars and the energy dissipation steel bar reserved hole passages are connected through grout. The prefabricated energy dissipation and damping beam-column joint has the characteristics of being simple in structure, stable in property, practical and effective, damping can be increased to a large extent, and damage to concrete of the beam-column joint is relieved.

Description

technical field [0001] The invention relates to the technical field of energy-dissipating and shock-absorbing passive control of building structures, in particular to a prefabricated prestressed concrete frame energy-dissipating and shock-absorbing beam-column node. Background technique [0002] Earthquakes are frequent natural disasters around the world. Once they occur, they often cause immeasurable damage and bring huge losses to life and property safety. For concrete frame structures, the safety of joints is the focus of earthquake resistance. [0003] Prefabricated concrete structures have the advantages of convenient construction, environmental protection and energy saving, and have been widely recognized and widely used at home and abroad. However, compared with cast-in-place concrete structures, prefabricated concrete structures have the problem of poor node reliability. Therefore, the key to precast concrete structures is the nodes. The quality and performance of t...

AI Technical Summary

Problems solved by technology

However, the traditional unbonded post-tensioned prestressed concrete frame joints have problems such as insufficient energy dissipation capacity and serious damage to the concrete at the beam-column interface.

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