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Construction method of composite pile of fiber reinforced composite deep-water bridge and composite pile thereof

A fiber reinforced composite and construction method technology, applied in sheet pile wall, foundation structure engineering, construction, etc., can solve the problem that FRP pipe mixed pile foundation has not been applied.

Inactive Publication Date: 2011-02-02
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] There have been examples of FRP sheet piles being used in practical projects at home and abroad, but the FRP pipe hybrid pile foundation has not been applied

Method used

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  • Construction method of composite pile of fiber reinforced composite deep-water bridge and composite pile thereof
  • Construction method of composite pile of fiber reinforced composite deep-water bridge and composite pile thereof
  • Construction method of composite pile of fiber reinforced composite deep-water bridge and composite pile thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for constructing fiber-reinforced composite deep-water bridge hybrid piles, comprising the following steps:

[0036] ① Roll the steel plate into a tube and weld it to form a steel tube 2,

[0037] ②Paste the carbon fiber reinforced plastic (FRP) on the outside of the steel pipe to form the FRP pipe 1, and integrate it with the steel pipe 2 to form an FRP composite pipe, then place and fix the FRP composite pipe,

[0038] ③ Vibration or hammering is used to install the FRP composite pipe to the predetermined position of the bridge pile foundation,

[0039] ④Drill a hole in the pipe to reach the design depth, place the bound steel cage 3 in the hole, and the FRP composite pipe also serves as a drilling casing,

[0040] ⑤ Pouring concrete to form the internal reinforced concrete 4, and the internal reinforced concrete 4 together with the FRP composite pipe constitutes a hybrid pile.

Embodiment 2

[0042] A hybrid pile implementing the fiber-reinforced composite deep-water bridge hybrid pile construction method described in Example 1, comprising a concrete pile body 4 with a built-in reinforcement cage 3, a steel pipe 2 is sleeved outside the concrete pile body 4, and a steel pipe 2 is sleeved outside the steel pipe 2. Let FRP pipe 1 be set.

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Abstract

The invention discloses a construction method of the composite pile of a fiber reinforced composite deep-water bridge and a composite pile thereof. The construction method of the composite pile of the fiber reinforced composite deep-water bridge comprises the following steps: 1. rolling a steel plate to form a cylinder, and welding to form a steel tube; 2. pasting carbon fiber reinforced plastic, i.e. the FRP on the outside of the steel tube to form an FRP tube, integrating the FRP tube with the steel tube to from an FRP composite tube, and then positioning and fixing the FRP composite tube; 3. installing the FRP composite tube on the preset position of a bridge pile foundation in a vibrating or hammering mode; 4. drilling a hole in the tube to the designed depth, arranging a bound steel reinforcement cage in the hole, wherein the FRP composite tube also serves as the casing of the hole; and 5. pouring the concrete to form the internal reinforced concrete, and using the internal reinforced concrete and the FRP composite tube together to form the composite pile. The composite pile comprises the concrete pile body with the steel reinforcement cage therein, the exterior of the concrete pile body is sheathed with the steel tube, and the exterior of the steel tube is sheathed with the FRP tube.

Description

technical field [0001] The invention relates to a bridge foundation technology, in particular to a construction method of a fiber-reinforced composite deep-water bridge mixed pile and the mixed pile. Background technique [0002] At present, bridges and infrastructure industries have serious problems in corrosive environments. Traditional reinforced concrete piles or wooden piles can meet the design requirements in normal environmental conditions, but they will be damaged in humid or coastal environments with storm tides. Accelerates the corrosion of steel bars and the degradation of concrete. With the development of the country's economic construction, large bridges need to be built in many deep waters, resulting in the problem of seawater corrosion. The foundation types of these bridges mostly adopt super long-diameter bored piles. In the conventional design, the casing only plays the role of protecting the pile body, and generally does not consider participating in the ...

Claims

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Application Information

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IPC IPC(8): E02D5/38
Inventor 戴国亮龚维明周香琴
Owner SOUTHEAST UNIV