Novel concrete-filled steel tube composite column filled with steel slag and waste glass concrete and preparation method thereof

Abstract

The invention relates to a novel concrete-filled steel tube composite column filled with steel slag and waste glass concrete and a preparation method thereof. The novel concrete-filled steel tube composite column filled with the steel slag and waste glass concrete is characterized in that the novel concrete-filled steel tube composite column filled with steel slag and waste glass concrete comprises a stainless steel outer steel tube and a carbon steel inner steel tube concentrically arranged in the stainless steel outer steel tube; the tube diameter of the carbon steel inner steel pipe is smaller than that of the stainless steel outer steel tube; steel slag and waste glass aggregate concrete is poured into an inner cavity formed in the carbon steel inner steel tube; steel slag lightweightaggregate concrete is poured into an annular partition cavity formed between the carbon steel inner steel tube and the stainless steel outer steel tube; the lower part of the stainless steel outer steel tube and the lower part of the carbon steel inner steel tube extend into an inner cavity from the outside of the stainless steel outer steel tube to form a concrete pouring tube; and at least one discharging port is formed in the concrete pouring tube. The novel concrete-filled steel tube composite column filled with the steel slag and waste glass concrete stainless steel pipe concrete composite column has the advantages that the ductility is good, the energy dissipation capacity is high and the novel concrete-filled steel tube composite column is suitable for being used in areas with highearthquake fortification requirements.

Description

Technical field: [0001] The invention relates to a novel steel-steel concrete composite column filled with waste glass concrete filled with steel slag and a preparation method thereof. Background technique: [0002] my country is vigorously researching and developing "green concrete" to promote the transformation and upgrading of the construction industry. The so-called "green concrete" is mainly a new type of energy-saving concrete that combines concrete with environmental protection, ecological protection and sustainable development; and the development of green In a series of approaches to concrete, vigorously develop artificial aggregates, especially the use of industrial solid waste, light aggregate production and manufacturing, urban solid waste, and waste concrete, bricks, tiles and other waste from old buildings and structures to replace concrete preparation. Natural aggregates and even cement are required to reduce the consumption of natural sand, gravel and cement so...

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Problems solved by technology

[0006] Stainless steel has excellent corrosion resistance, excellent mechanical properties and a beautiful surface with great visual impact and is gradually used in engineering structures. At present, the stainless steels used in engineering structures are mainly austenitic, ferritic and austenitic. Austenitic-ferritic duplex stainless steel. Austenitic stainless steel has excellent corrosion resistance, oxidation resistance and welding performance. Although it is the most widely used stainless steel at present, its strength is low. Ferritic stainless steel has high strength, but Ductility, cold formability, weldability, corrosion resistance, etc. are not as good as austenitic stainless steel, and austenitic-ferritic duplex stainless steel has better corrosion resistance and strength than austenitic stainless steel and has With good ductility and weldability, it is currently the most widely used stainless steel in engineering structures, but its relatively high price also limits its wide application; in 2018, a new type of QN series high-nitrogen nickel-saving austenitic stainless steel was launched on the market. Its corrosion resistance is equivalent to ordinary austenitic stainless steel, but it has higher strength and lower cost, and can be widely used in engineering structures

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