Sea sand recycled concrete member for hollow double-skin steel pipe

Abstract

The invention belongs to the field of engineering structures, and particularly relates to a sea sand recycled concrete member for a hollow double-skin steel pipe. The member is characterized in that the inner surface of an outer steel pipe and the outer surface of an inner steel pipe are coated with epoxy resin; the space formed by encircling of the inner steel pipe and the outer steel pipe is filled with the sea sand recycled concrete. Because a form of the cross section of the hollow double-skin is adopted, the axial load strength of the hollow double-skin steel pipe sea sand recycled concrete is not smaller than that of solid steel pipe concrete, and the anti-bending bearing capability and the fireproof high-temperature resistant performance are greatly improved; the surface layers of the inner steel pipe and the outer steel pipe are coated with epoxy resin, the corrosion of the steel pipes is avoided; moreover, the inner part of the steel pipes is filled with the sea sand recycled concrete, so that the bearing capability and the deformation capability of the concrete can be improved, and the safety hidden danger of the sea sand can be reduced, and a combination function can be fully achieved. By using the member, the application of the sea sand recycled concrete member is improved, energy source conservation and renewable resource utilization are fully achieved, and the sea sand recycled concrete member has a good social and economic benefit.

Description

technical field [0001] The patent of the invention belongs to the field of engineering structures, and specifically designs a novel hollow interlayer steel pipe sea sand recycled concrete component. Background technique [0002] With the continuous increase of engineering construction, the over-exploitation and use of construction sand and stones has led to an increasing shortage of river sand, gravel, and pebble resources, which not only deteriorates the ecological environment, but also causes serious shortages. The use of sea sand recycled coarse aggregate concrete is a good way to solve the problem. Sea sand recycled coarse aggregate concrete replaces part / all of the natural coarse aggregate in concrete with recycled coarse aggregate, while part / all of the fine aggregate is replaced with sea sand, referred to as sea sand recycled concrete. As a new green and environmentally friendly building material, sea sand recycled concrete has broad development prospects and applica...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems in the existing practice, the patent of the present invention provides a hollow interlayer steel pipe sea sand recycled concrete member with good mechanical durability that can be used in actual engineering

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