Prefabricated prestressed concrete frame joint with amplified corner multi-stage energy consumption

Abstract

The invention belongs to the technical field of civil engineering fabricated structures, and discloses a prefabricated prestressed concrete frame joint with amplified corner multi-stage energy consumption. The prefabricated prestressed concrete frame joint with the amplified corner multi-stage energy consumption comprises a prefabricated reinforced concrete column, a prefabricated reinforced concrete beam, an amplified corner type joint shear damper, a fixing plate, high-strength bolts, a beam end sliding device, an energy consumption baffle, fixing screws, a prestressed steel strand reservedpore channel and an unbounded prestressed steel strand, wherein the amplified corner type joint shear damper is fixed to the column by the fixing plate and the high-strength bolts, the energy consumption baffle and the fixing screws are arranged on the beam end sliding device, and the unbounded prestressed steel strand is arranged in the prestressed steel strand reserved pore channel. According tothe prefabricated prestressed concrete frame joint with the amplified corner multi-stage energy consumption, effective energy consumption can be carried out under the action of strong / typhoon and earthquake with different strengths, the stability and energy consumption capacity of the joint under high-intensity earthquake are guaranteed, so that body member damage is reduced, post-earthquake residual deformation is eliminated, and the good self-reset function is guaranteed.

Description

Technical field [0001] The invention relates to a prefabricated prestressed concrete frame node with enlarged corners and multi-level energy consumption, which belongs to the field of civil engineering assembled structures. Background technique [0002] The prefabricated frame structure is a structure made of factory-produced prefabricated beams and columns as the main force-bearing components and assembled by reliable connections at the construction site. It has the advantages of fast construction, high quality and high efficiency, energy saving and environmental protection, and is conducive to the realization of green construction and the development of building industrialization. It is one of the important directions for the development of building structures in my country. However, at present, the fabricated type in my country mainly adopts the equivalent cast-in-place structure, and the precast beams and columns are cast on-site at the nodes to ensure that the seismic perfor...

AI Technical Summary

Problems solved by technology

However, general energy-dissipating components can only achieve the energy-dissipating effect when the structure undergoes a large relative deformation, and it is difficult to function when the structural deformation is small, and the energy-dissipating efficiency is low.

In addition, the stiffness of this type of structure decreases significantly after the joints are opened, and there will be a large seismic response under the action of strong earthquakes, resulting in the degradation of damper performance, insufficient energy dissipation capacity, serious damage to beam-column contact surfaces and non-structural components, etc.

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