Concrete column with sea sand concrete and core rubber concrete

Abstract

The invention discloses a concrete column with sea sand concrete and core rubber concrete. The concrete column with the sea sand concrete and the core rubber concrete comprises an outer-layer FRP pipe, an FRP-steel composite pipe, the sea sand concrete and the rubber concrete, the FRP-steel composite pipe is arranged in the outer-layer FRP pipe, and the position between the FRP-steel composite pipe and the outer-layer FRP pipe is filled with the sea sand concrete; the FRP-steel composite pipe is filled with the rubber concrete; and the FRP-steel composite pipe comprises a steel pipe body and FRP fiber cloth covering the external surface of the steel pipe body. According to the concrete column with the sea sand concrete and the core rubber concrete, original sea sand which is not subjected to desalting treatment can be directly used, the fresh water resource is saved, the desalting working procedure is omitted, and the utilization rate of the sea sand is greatly increased. In addition, the defects that a rubber concrete column is low in compressive strength, and peculiar smell is released are overcome, the engineering application fields of the rubber concrete are expanded, the utilization rate of rubber is greatly increased, and the concrete column with the sea sand concrete and the core rubber concrete has the beneficial effects of being high in bearing capacity, good in shock resistance and damping capacity, excellent in seismic performance and environmentally friendly.

Description

technical field [0001] The invention belongs to the field of building engineering structures, in particular to a sea sand concrete core rubber concrete column. Background technique [0002] Concrete, as an integral part of the building structure, plays an indispensable role in the construction of the project, and river sand, as one of the aggregate components for preparing concrete, mainly comes from the excavation of riverbeds and mountains on land. In recent years, massive mining of river sand has caused serious damage to the riverbed and its surrounding ecological environment. The resources of river sand are becoming increasingly scarce, and we urgently need to find a green alternative material to improve the natural environment we depend on for survival. Sea sand has the advantages of large reserves, low mud content, uniform fineness modulus, and wide distribution, but it also contains harmful impurities such as chloride ions that can corrode the passivation film of ste...

AI Technical Summary

Problems solved by technology

However, the traditional FRP tube-confined concrete still has the following shortcomings, which seriously affect its promotion in engineering

First of all, the failure of FRP material is brittle, so that the FRP pipe concrete will suddenly fail when it reaches the ultimate bearing capacity, resulting in the direct collapse of the building structure

In addition, in the initial stage of concrete pouring of FRP pipes, its stiffness and bearing capacity are low, and excessive deformation or instability may occur under the concrete's own weight, which leads to the failure of the ideal strength and bearing capacity of the building structure

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