High-strength steel pipe confined ultra-high performance concrete column structure and construction method thereof

Abstract

The invention relates to a high-strength steel pipe confined ultra-high performance concrete column structure. The high-strength steel pipe confined ultra-high performance concrete column structure comprises a high-strength steel pipe, wherein the high-strength steel pipe is internally poured with a filling layer of ultra-high performance concrete, and at least a section of annular steel ring is removed from the peripheral portion of the high-strength steel pipe. At least one annular slit is formed in the peripheral portion of the high-strength steel pipe, and the annular slit divides the high-strength steel pipe into at least two sections. The high-strength steel pipe confined ultra-high performance concrete column structure has a simple structure.

Description

technical field [0001] The invention relates to a high-strength steel pipe-constrained ultra-high-performance concrete column structure and a construction method thereof, belonging to the field of building structures. Background technique [0002] High-strength steel (steel with yield strength ≥ 450MPa) can save material consumption in application engineering, which is environmentally friendly and energy-saving. Compared with ordinary steel, high-strength steel has high strength, dense material, and good toughness. [0003] The length of the steel tube of the traditional steel tube concrete column is the same as the length of the internal concrete, which not only constrains the core concrete in the tube horizontally, but also bears the load transmitted vertically, which will affect the restraint effect of the steel tube confined concrete column. [0004] Especially for steel tube-constrained ultra-high performance concrete column structures with large cross-sectional sizes, ...

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Problems solved by technology

[0003] The length of the steel tube of the traditional concrete-filled steel tube column is the same as the length of the internal concrete, which not only constrains the core concrete in the tube laterally, but also bears the load transmitted vertically, which will affect the restraint effect of the steel tube-confined concrete column

[0004] Especially for steel tube-constrained ultra-high performance concrete column structures with large cross-sectional sizes, ordinary steel tubes simply rely on changing the diameter-thickness ratio to ensure that ordinary steel tube-bound ultra-high performance concrete column structures have good compressive ductility, which will lead to the thickness of ordinary steel tubes The requirements are far beyond the scope of application of existing specifications, the scope of market supply and production technology, and there are feasibility problems in its engineering application

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