FRP pipe-core steel reinforced sea sand concrete column

Abstract

The invention discloses an FRP pipe-core steel reinforced sea sand concrete column which comprises an outer layer FRP pipe, an inner layer FRP pipe arranged in the outer layer FRP pipe, and a steel frame. The inner layerFRP pipe is sleeved with the outer layer FRP pipe. Sea sand concrete is filled between the inner layer FRP pipe and the outer layer FRP pipe, so that the inner layer FRP pipe and the outer layer FRP pipe are fixed together. The steel frame is arranged in the inner layer FRP pipe. Concrete is filled between the inner layer FRP pipe and the steel frame, so that the inner layer FRP pipe and the steel frame are fixed together. The steel frame extends and is distributed in the axial direction of the inner layer FRP pipe. According to the FRP pipe-core steel reinforced sea sand concrete column, original sea sand can be used and does not need to be desalted, the sea sand can be used directly for preparing the sea sand concrete for column body pouring, the durability of the column body is greatly improved, the fresh water resources are saved, the desalting procedure is omitted, the sea sand use ratio is greatly increased, and the beneficial effect of good strength and bearing performance is achieved.

Description

technical field [0001] The invention belongs to the field of building engineering structures, in particular to an FRP pipe-core steel frame sea sand concrete column. Background technique [0002] With the continuous development of science and technology in our country and the breakthroughs in the field of construction engineering, more and more new building materials have entered people's lives. Although my country has a large population base, the per capita share of natural resources is very small. As a component of the structure, concrete plays an indispensable role in the construction of projects, and river sand is one of the aggregate components for preparing concrete. It mainly comes from the excavation of riverbeds and mountains on land. In recent years, a large amount of mining of river sand has caused serious damage to the ecological environment of the riverbed and its surroundings. The resources of river sand are becoming increasingly scarce, and we urgently need t...

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 brittleness of FRP material is relatively high, so that the FRP pipe concrete will suddenly fail when it reaches the ultimate bearing capacity, which will lead to 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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