Fabricated flexible concrete frame joint structure with hidden dampers

Abstract

The invention discloses an assembled flexible concrete frame node structure with a hidden damper, which includes a concrete prefabricated beam (1), a concrete prefabricated column (2), unbonded prestressed steel strands (3), a damper ( 4); The two sides of the precast concrete column are respectively symmetrically installed with precast concrete beams through four dampers, and high-strength rubber gaskets are placed at the joints of the precast concrete beams and precast concrete columns, and high-toughness fiber slurry is used to fill seam. The design of the invention is reasonable, and the metal damper fully consumes energy through the relative rotation between the viscoelastic damping sheets during an earthquake, which changes the force transmission path at the intersection of beams and columns, and can effectively reduce the damage of the node main body; the energy dissipation damper unit Hiding avoids the coincidence of the plastic hinge area and the main body of the node, and only needs to replace the damper unit of the earthquake-damaged structure to restore the structural function. The structure belongs to the recoverable functional structure, which can restore the function of normal use as quickly as possible after the earthquake.

Description

technical field [0001] The invention relates to the field of structural engineering, in particular to a node structure between prefabricated components of an assembled flexible frame in a building structure. Background technique [0002] Construction industrialization is characterized by the development of the construction industry in various countries: standardization of component design, factory production, mechanization of construction and scientific management. Prefabricated concrete structure is a structural type that conforms to industrial production methods. At present, the most mature technology and has entered the stage of practical application is the "wet connection" node, which has basically reached the level of cast-in-place concrete structure in terms of mechanical performance, especially energy dissipation capacity, but due to the "wet connection" node in During the construction process, there was secondary cast-in-place, and the narrow working space of the po...

AI Technical Summary

Problems solved by technology

Existing studies have shown that the prefabricated flexible frame joints have the following problems: the structure equipped with energy-dissipating damping elements is inconvenient for construction, and the occupied space affects the normal use of the building, etc.

If the support or damper is poured inside the building structure, it will easily cause structural cracking, and the concrete structure will still be damaged in an earthquake; if it is arranged indoors, it will take up a lot of space, and it will be arranged outdoors. The performance of viscoelastic dampers will be affected by temperature changes

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