Prestressed steel-concrete joint optimization method and steel-concrete joint

Abstract

The invention belongs to the technical field of building structure engineering, and provides a prestressed steel-concrete joint optimization method and a steel-concrete joint, a flange-like ring is arranged in a lantern ring, an arc-shaped hole is formed in the flange-like ring, and concrete tightly wraps the whole lantern ring and is embedded into the upper surface and the lower surface of the flange-like ring and the interior of the arc-shaped hole after being poured; a three-dimensional mechanical meshing and pressure-bearing relation is formed between concrete and a lantern ring, the concrete is dispersed into the concrete in a node core area through a flange-ring-like structure, concentrated node force is converted into uniform concrete pressure stress, smooth load transition is achieved, and therefore the integrity and the force transmission efficiency of the structure are improved; comparing a finite element analysis result with a threshold value, and determining the damage degree of the reinforced concrete joint; the steel-concrete joint is repaired according to different damage degrees, structural optimization and numerical simulation optimization are combined, and on the basis of ensuring the performance of the steel-concrete joint, the complexity of structural design is reduced, and the construction difficulty and cost are reduced.

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