Equilateral three-limb combination column structure of ultra-high performance concrete sleeves and construction method of equilateral three-limb combination column structure

Abstract

The invention relates to an equilateral three-limb combination column structure of ultra-high performance concrete sleeves and a construction method of the equilateral three-limb combination column structure. The equilateral three-limb combination column structure comprises three column limbs and reinforcing bar ultra-high performance concrete slabs, wherein the three column limbs are distributedin an equilateral triangle, and the reinforcing bar ultra-high performance concrete slabs are connected between any two of the three column limbs correspondingly; each column limb includes a concretefilled steel tubular column and the corresponding ultra-high performance concrete sleeve arranged at the peripheral side of the concrete filled steel tubular column in a sleeving manner; each concretefilled steel tubular column includes H-shaped steel and column limb concrete, and the column limb concrete is poured at the outer side of the corresponding H-shaped steel by taking the correspondingultra-high performance concrete sleeve as the formwork; each reinforcing bar ultra-high performance concrete slab includes a reinforcing bar and a filled ultra-high performance concrete layer; and thetwo ends of each reinforcing bar are correspondingly welded and fixed to the adjacent pieces of H-shaped steel. According to the equilateral three-limb combination column structure, by employing theultra-high performance concrete sleeves and the reinforcing bar ultra-high performance concrete slabs, not only is the strength of the cross section increased, but also the stiffness of the cross section is obviously enhanced without changing the cross section; the bearing capacity, the corrosion resistance, the stiffness and the like of the structure can be increased, and meanwhile, the effects of lightweight and high strength are also achieved, and the service life of the structure is prolonged.

Description

Technical field: [0001] The invention relates to an equilateral three-leg combined column structure with an ultra-high performance concrete sleeve and a construction method thereof. Background technique: [0002] At present, most of the concrete filled in reinforced concrete equilateral three-leg columns is ordinary concrete with self-heavy weight, low tensile strength, low early strength, weak stiffness, fragility, and general corrosion resistance. These shortcomings affect and limit reinforced concrete, etc. Application of side tripod columns in large bridges. Therefore, it is necessary to improve a new type of structure, which can improve the bearing capacity, stiffness and durability of the structure without increasing the cross-sectional area of ​​the structure and reducing the self-weight of the structure. Invention content: [0003] The present invention makes improvements to the problems existing in the above-mentioned prior art, that is, the technical problem to ...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the concrete filled in reinforced concrete equilateral three-leg columns is ordinary concrete with self-heavy weight, low tensile strength, low early strength, weak stiffness, fragility, and general corrosion resistance. These shortcomings affect and limit reinforced concrete, etc. Application of Side Tripod Columns in Large Bridges

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