Concrete column base joint containing high-ductility replaceable energy-dissipation connecting assembly

Abstract

The invention discloses a concrete column base joint containing a high-ductility replaceable energy-dissipation connecting assembly. The concrete column base joint is arranged on the bottom of a rectangular-section column of a concrete structure, and comprises a concrete column, the high-ductility replaceable energy-dissipation connecting assembly and a concrete base, wherein the high-ductility replaceable energy-dissipation connecting assembly is separately welded with the concrete column and a steel connecting block pre-embedded in the concrete base to form a continuous reliable force transmission system. The bottom of the concrete column is equipped with a column bottom reinforcing core column, so that column bottom pressure can be borne under action of an earthquake, and damages are avoided; and the high-ductility replaceable energy-dissipation connecting assembly is mounted on four side surfaces of the column base joint, so that stressed longitudinal bars on the original positionsare replaced, and therefore, hysteretic behavior can be utilized to dissipate earthquake energy during a medium earthquake or a big earthquake, and damages can be controlled inside.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to a concrete column base node with a replaceable energy-dissipating connection component with high ductility. Background technique [0002] (1) Column foot damage under earthquake action [0003] Under earthquake action, reinforced concrete columns or bridge pier columns are also subject to reciprocating horizontal loads while bearing vertical loads. When the bending resistance, shear strength or ductility are insufficient, the columns will be cracked or damaged. The base of the column is under the joint action of greater pressure and bending moment. Under the action of bending moment, one side is under compression and one side is under tension, and a plastic hinge will be formed earlier. Especially for the column foot of the concrete frame structure, the structure of the column foot joint is the key to the seismic performance of the concrete structure, and plastic hinges will ine...

AI Technical Summary

Problems solved by technology

The damaged engineering structure has weakened ability to bear loads and effects, deteriorated mechanical performance, and reduced structural safety.

Under the action of earthquakes that may occur in the future, it is more likely that the structure will lose its integrity due to the accelerated failure of the damaged parts, and in serious cases, it may collapse, causing huge losses of people's lives and property.

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