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Double-pipe reinforced composite combined built pile

A technology of composite materials and combined piles, which is applied in the direction of sheet pile walls, buildings, and foundation structure engineering, can solve the problems of insufficient rigidity and poor corrosion resistance of pure composite piles, and achieve wide application range, high bearing capacity, and displacement The effect of improving the ductility coefficient

Inactive Publication Date: 2010-11-24
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to design a pile with good corrosion resistance that combines the characteristics of steel, composite materials and concrete for the problems of poor corrosion resistance of pure reinforced concrete piles and soil used in existing civil engineering structures and insufficient rigidity of pure composite piles. , high strength and rigidity double tube reinforced composite material composite piles

Method used

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  • Double-pipe reinforced composite combined built pile
  • Double-pipe reinforced composite combined built pile
  • Double-pipe reinforced composite combined built pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as figure 1 shown.

[0050] A double-tube reinforced composite pile, which is mainly composed of a cylindrical composite material outer tube 1, a cylindrical metal inner tube 3 and poured on the composite material outer tube 1 and metal inner tube 3 (generally steel pipe or stainless steel tube, the lower Concrete 2 between the same), the outer surface of the metal inner tube 3 is welded with a T-shaped metal stiffener 4, the schematic diagram of the cross section of the pile in this embodiment is as follows figure 1 shown.

[0051] The fiber layer of the composite outer tube can be unidirectionally or bidirectionally mixed with carbon fiber, glass fiber, aramid fiber and basalt fiber, and the horizontal angle of the fiber can be 0°, 45°, 55° or 90°. There can be four, or more than four, T-shaped stiffeners in the section of each member, preferably four. The sand layer can be resin-based quartz sand laid on the fiber layer to increase the strength of the pipe wa...

Embodiment 2

[0054] Such as figure 2 shown.

[0055] The difference between the present embodiment and the first embodiment is that the surface of the cylindrical metal inner tube 3 is welded with an L-shaped stiffener 4, and the rest are the same as the first embodiment, and the performance indicators are also equivalent.

Embodiment 3

[0057] Such as image 3 shown.

[0058] The difference between this embodiment and the first embodiment is that the surface of the cylindrical metal inner tube 3 is welded with an I-shaped stiffener 4, and the rest are the same as the first embodiment, and the performance indicators are also equivalent.

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Abstract

The invention disclose a double-pipe reinforced composite combined built pile, mainly consisting of a composite outer pipe (1), a metal inner pipe (3) and concrete (2) poured between the composite outer pipe (1) and the metal inner pipe (3). The invention is characterized in that the outer surface of the metal inner pipe (3) is welded with T-shaped, L-shaped or I-shaped metal ribs (4). The invention has the advantages of light weight, good rigidity and high strength and shock resistance.

Description

technical field [0001] The invention relates to a pile structure used in civil engineering structures, in particular to a pile mainly composed of composite materials, in particular to a double-pipe-reinforced pile composed of composite materials. Background technique [0002] As we all know, in cross-sea (river) bridge engineering and port wharf engineering, reinforced concrete, prestressed reinforced concrete, and steel pipe concrete members are the three most widely used types of bridge piers and pile foundations. Strong bending ability. However, the marine environment is much harsher than the land environment, and the corrosion of steel structures is particularly serious. Salt spray in the ocean atmosphere, dissolved oxygen in seawater, marine organisms, bacteria in seabed soil, etc., can cause corrosion of steel pipe piles to varying degrees when the steel pipe piles are not effectively protected, and the average corrosion rate can reach 0.3 mm / year to 0.4mm / year, and ...

Claims

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Application Information

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IPC IPC(8): E02D5/24
Inventor 刘伟庆王俊祝露方海陆伟东
Owner NANJING UNIV OF TECH
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