Concrete-filled steel tube column provided with soft steel bushing and embedded with high-tenacity material and manufacturing method thereof

Abstract

The invention discloses a concrete-filled steel tube column provided with a soft steel bushing and embedded with a high-tenacity material. The concrete-filled steel tube column comprises an inner pipe (1), core concrete (2), a soft steel bushing (3), bolts (4) and a high-tenacity composite material (6). In the invention, the bottom of an ordinary concrete-filled steel tube is provided with the soft steel bushing (3); and the high-tenacity composite material (6) is embedded into the space between the soft steel bushing (3) and the inner pipe (1). Under the action of conventional earthquake, the bottom soft steel bushing and an concrete-filled steel tube column have high overall working performance, high rigidity and high strength; and under the action of rare earthquake, shearing damage to the bolts is severe, the connection between an inner pipe and an outer pipe is weakened, the co-working performance degenerates, the ductility and energy consumption functions of the inner pipe and the outer pipe are brought into full play respectively, the overall regality is reduced, the structural period is prolonged, and the earthquake action is reduced; and after the soft steel bushing is arranged, an earthquake fortification line is increased, the structural safety is enhanced, and early impairment and damage to a high-strength steel plate are prevented and delayed.

Description

technical field [0001] The invention relates to a steel pipe concrete column with a soft steel casing embedded in a high-toughness material at the bottom of the root and a method thereof, belonging to the field of energy consumption and shock absorption control in building structures. Background technique [0002] The society is developing and progressing, and people's living standards are also constantly improving. Various forms of buildings emerge in an endless stream, and buildings that meet different functions also emerge as the times require. No matter the height or shape, there has been great development, which requires new theories and new technologies to support the construction of this type of building. Under the demand of social development, the steel tube concrete structure will emerge accordingly. [0003] Concrete filled steel pipe is composed of steel pipe and concrete. Due to the effect of concrete in the pipe, the stability of the steel pipe wall plate is gr...

AI Technical Summary

Problems solved by technology

Under the action of strong earthquakes, the damaged part of the steel pipe concrete structure generally occurs at the bottom, and the steel pipe wall plate is prone to local buckling. Afterwards, due to the decline in the bearing capacity of the steel pipe wall plate, the restraining effect on the internal concrete is weakened, resulting in tearing of the weld seam at the corner of the steel pipe. The core concrete at the corresponding part of the steel pipe bulging out is severely shattered, and at this time the superstructure may not have yielded, and the performance of the material has not been fully utilized, resulting in a serious waste of materials. A large number of earthquake damages also prove got this

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