Recycled concrete T-shaped steel tube special-shaped column

Abstract

The invention discloses a recycled concrete T-shaped steel tube special-shaped column. The recycled concrete T-shaped steel tube special-shaped column is formed by welding a circular steel tube and three U-shaped steel grooves, wherein ordinary aggregate concrete is poured inside the U-shaped steel grooves; recycled aggregate concrete is poured inside the circular steel tube; shearing bolts are welded in the U-shaped steel grooves. The recycled concrete T-shaped steel tube special-shaped column has the beneficial effects that large-diameter steel tube confined recycled concrete is adopted at the corner of the T-shaped special-shaped column, thus improving the mechanical properties and twisting resistance of the T-shaped special-shaped column, improving the bearing capacity and shock resistance of steel tube confined recycled concrete, reducing the doubts of people about poor properties of recycled concrete and being beneficial to popularization and application of recycled concrete in high-rise buildings and construction waste recycling; the recycled concrete T-shaped steel tube special-shaped column can be applied to high-rise buildings and regions with higher seismic intensity, thus expanding the application range of recycled concrete; besides, steel-encased plates and steel tubes can be used as formworks, thus saving the formworks, increasing the construction speed and increasing the economic benefits.

Description

technical field [0001] The invention belongs to the technical field of steel and concrete combined structure and mixed structure, and relates to a special-shaped column, in particular to a recycled concrete T-shaped steel pipe special-shaped column. Background technique [0002] The aggregate formed after crushing, cleaning and grading waste concrete blocks is called recycled aggregate; the concrete prepared with recycled aggregate partially or completely replacing natural aggregates such as sand and stone is called recycled aggregate concrete, or recycled concrete for short. The promotion and application of recycled concrete is conducive to the recycling of construction waste and meets the requirements of environmental protection and sustainable development. An important feature of sustainable development is environmental protection and protection of natural resources. Making full use of recycled concrete can not only effectively reduce the amount of construction waste, re...

AI Technical Summary

Problems solved by technology

[0003] However, due to the influence of the old mortar attached to the recycled aggregate, compared with ordinary concrete, recycled concrete is more prone to microcracks under uniaxial pressure, and the uniaxial compressive strength of recycled concrete is generally lower than that of ordinary concrete, which affects its promotional application

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