Friction energy dissipation nodes of prefabricated self-resetting prestressed concrete frame

Abstract

The invention discloses a fabricated self-resetting prestressed concrete frame friction energy dissipation node which comprises a prefabricated reinforced concrete column, a prefabricated reinforced concrete beam, a column end pre-embedded steel plate, friction plates, beam end pre-embedded steel plates, non-boning prestressed steel stranded wires and prestressed steel stranded wire hole channels;the column end pre-embedded steel plate is welded with end plate anchoring steel bars and friction rail steel plates; the beam end pre-embedded steel plates are welded with shear bolt nails; bolt hole channels are reserved in the prefabricated reinforced concrete beam; high-strength bolts pass through the bolt hole channels in the upper end of the prefabricated reinforced concrete beam, connect the friction plates and the friction rail steel plates located at the top and the bottom of the prefabricated reinforced concrete beam with the column end pre-embedded steel plates together, and tighten the high-strength bolts to apply pressure. According to the invention, through the friction energy dissipation and the replaceable friction plates, a prefabricated fabricated concrete frame structure is endowed with excellent anti-seismic performance and self-reset capability under high-intensity earthquakes.

Description

technical field [0001] The invention relates to the field of anti-seismic and shock-absorbing technology of structural engineering, in particular to an assembled self-resetting prestressed concrete frame friction energy-dissipating node. Background technique [0002] my country's prefabricated structure mainly adopts the prefabricated integral type, that is, the theoretical model of "equivalent to cast-in-place". The seismic performance of the assembled monolithic structure is close to that of the cast-in-place structure, but the joints still need to be cast-in-situ, and the degree of assembly is not high. The post-tensioned prestressed prefabricated structure formed by splicing prefabricated components through prestressed steel strands not only facilitates construction, but also can withstand the bending moment at the beam end during the use stage. The residual deformation is greatly reduced, and the repair cost and indirect loss of the post-earthquake structure are greatl...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the disadvantage of poor energy dissipation capacity of the traditional prefabricated self-resetting prestressed structure, the present invention provides a frictional energy-dissipating node of the prefabricated self-resetting prestressed concrete frame with convenient construction and remarkable energy dissipation effect, so that the prefabricated structure can be used at high It has excellent anti-seismic performance and self-resetting ability under strong earthquakes

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