Beam hinge fabricated self-resetting friction connecting node structure and connecting method

Abstract

The invention discloses a beam hinge fabricated self-resetting friction connecting node structure and a connecting method. First connecting pieces are pre-embedded in a precast column, second connecting pieces are pre-embedded in a precast beam, the two sides of the precast column are fixedly connected with the second connecting pieces on the precast beam through the first connecting piece correspondingly so as to form a friction energy dissipation device; the second connecting pieces on the two sides of the precast column are then fixedly connected through memory alloy rods; when a sudden load is applied to precast beam nodes, the friction energy dissipation device composed of the first connecting pieces and the second connecting pieces on the two sides of the precast column consumes a large amount of energy due to relative sliding friction, and after unloading, the memory alloy rods drives the friction energy dissipation device composed of the first connecting pieces and the second connecting pieces on the two sides of the precast column to return to the original state without residual deformation. Connecting fittings of the nodes are simple to manufacture and convenient to factory type quantitative production, the construction is convenient, the connection of the beam and the column in the prefabricated assembly building can be quickly completed, the construction period is shortened, the time cost is reduced, and the engineering cost is saved.

Description

technical field [0001] The invention relates to the field of connection structure engineering in civil engineering design, and specifically relates to a beam-hinge assembled self-resetting friction connection node structure and method. Background technique [0002] The prefabricated building industry as a whole has been continuously improved and has been widely used. However, compared with the cast-in-place concrete structure, the actual prefabricated concrete structure has a series of problems such as poor integrity and poor seismic performance. [0003] The most important thing in the prefabricated concrete structure is the treatment of the beam-column joints. Under the action of earthquakes, the damage of the joints may lead to the continuous collapse of the entire structure. At present, the existing connection forms of prefabricated beam-column joints can be divided into two categories: one is the post-casting connection between precast concrete columns and precast concr...

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a beam-hinge assembly type self-resetting friction connection node structure and method to overcome the shortcomings of the existing connection node structure complex, pouring difficulties and local damage of the column to reduce the bearing capacity, and can effectively improve the energy consumption of the joint. Energy effect and seismic performance of structures

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