A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a bamboo-shaped prestress circular plastic tube. The bamboo-shaped prestress circular plastic tube consists of a plurality of tube sections with the same structure, wherein the tube sections are sequentially connected to one another; each tube section comprises a large circular tube, a small circular tube, a middle circular tube and another small circular tube which are sequentially connected with one another; the cross section of each large circular tube, the cross section of each middle circular tube and the cross section of each small circular tube are in the shape of a circular tube; the thicknesses of walls of the circular tubes are the same; and the overall dimension of the cross section of each large circular tube, the overall dimension of the cross section of each middle circular tube and the overall dimension of each small circular tube are sequentially reduced. The bamboo-shaped prestress circular plastic tube is suitable for vacuum mud-jacking post-tensioning-method prestress concrete construction; grouting compactness and grouting plumpness of a prestress duct are guaranteed; damage resistance is high; the area of a portion, which is in contact with concrete, of the bamboo-shaped prestress circular plastic tube is increased; reliability of force transfer between a grouted prestress steel strand and a concrete component is improved; and the bamboo-shaped prestress circular plastic tube is embedded in a component with the small thickness.
The invention discloses a bamboo-shaped prestress circular plastic tube. The bamboo-shaped prestress circular plastic tube consists of a plurality of tube sections with the same structure, wherein the tube sections are sequentially connected to one another; each tube section comprises a large circular tube, a small circular tube, a middle circular tube and another small circular tube which are sequentially connected with one another; the cross section of each large circular tube, the cross section of each middle circular tube and the cross section of each small circular tube are in the shape of a circular tube; the thicknesses of walls of the circular tubes are the same; and the overall dimension of the cross section of each large circular tube, the overall dimension of the cross section of each middle circular tube and the overall dimension of each small circular tube are sequentially reduced. The bamboo-shaped prestress circular plastic tube is suitable for vacuum mud-jacking post-tensioning-method prestress concrete construction; grouting compactness and grouting plumpness of a prestress duct are guaranteed; damage resistance is high; the area of a portion, which is in contact with concrete, of the bamboo-shaped prestress circular plastic tube is increased; reliability of force transfer between a grouted prestress steel strand and a concrete component is improved; and the bamboo-shaped prestress circular plastic tube is embedded in a component with the small thickness.
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