Fiber reinforced plastics-steel composite pipe restricted structural steel high-strength concrete column

Abstract

The invention discloses a fiber reinforced plastics-steel composite pipe restricted structural steel high-strength concrete column, which comprises longitudinal bars, hoopings, high-strength concrete, a structural steel and a fiber reinforced plastics-steel composite pipe; the longitudinal bars are distributed in the height direction of the column, the circular hoopings are sleeved in the height direction of the longitudinal bars, the structural steel is distributed in the hoopings along the height direction of the column, and the fiber reinforced plastics-steel composite pipe is sleeved outside of the hoopings in the height direction of the column; the fiber reinforced plastics-steel composite pipe is composed of a steel pipe used as an inner wall and a fiber reinforced plastics pipe used as an external wall, high-strength solid concrete is poured in the fiber reinforced plastics-steel composite pipe, and the fiber reinforced plastics-steel composite pipe is broken at two ends of the column. With the column provided by the invention, the axial compression ratio and the seismic performance of the structural steel high-strength concrete column are improved, and the endurance quality of the steel pipe restricted structural steel high-strength concrete column is also improved; and problems, such as high dosage of steel, troubles in connection with reinforced concrete beams, and the like, of the steel pipe structural steel high-strength concrete column are solved.

Description

technical field [0001] The invention belongs to a civil engineering structural member, in particular to a steel-shaped high-strength concrete column, which is especially suitable for high-rise buildings, bridge projects, underground projects, port projects, etc. Background technique [0002] High-strength concrete has the advantages of high strength, small deformation and good durability. It can meet the needs of modern engineering structures with large spans, heavy loads and high towers. The high strength of concrete is an important trend in the development of modern concrete structures. The use of high-strength concrete frame columns in high-rise structures can effectively reduce the column section, increase the usable area of ​​the house, and improve the seismic performance of the frame columns. The superior performance makes the application range of high-strength concrete continuously expand. [0003] However, high-strength concrete also has its fatal weakness, that is,...

AI Technical Summary

Problems solved by technology

When the axial compression is relatively large, the ductility of the column under the horizontal earthquake load is very low, the energy dissipation capacity is small, and the seismic performance is very poor

[0006] 2. Under the action of earthquake load, it is easy to cause the protective layer to fall off, the longitudinal reinforcement and the steel flange to lose stability, and it is difficult to repair after the earthquake

[0010] However, when steel pipe-shaped steel high-strength concrete columns and steel pipe-bound steel high-strength concrete columns are used in harsh environments such as oceans, humidity, and saline-alkali land, the outsourcing steel pipes need to be coated with anti-corrosion coatings or special anti-corrosion measures, which greatly increases the project cost. and technical difficulty, and the post-maintenance cost is also relatively high

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