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Fiber-reinforced composite material rib concrete pile and its production and construction method

A composite material and concrete pile technology, applied in sheet pile wall, foundation structure engineering, construction and other directions, can solve the problems of not achieving satisfactory results, increase project cost, increase technical difficulty, etc., to reduce cost and technical difficulty, and improve service. Years, the effect of improving durability

Inactive Publication Date: 2009-01-14
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods not only greatly increase the project cost and technical difficulty, but still cannot achieve satisfactory results.

Method used

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  • Fiber-reinforced composite material rib concrete pile and its production and construction method
  • Fiber-reinforced composite material rib concrete pile and its production and construction method
  • Fiber-reinforced composite material rib concrete pile and its production and construction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0086] A kind of FRP concrete pile of the present invention, its structural composition is as follows:

[0087] FRP concrete pile is composed of base material C and reinforcement (or profile) F, such as figure 1 As shown; the arrangement of FRP reinforcement adopts the arrangement of prefabricated reinforced concrete square piles; the connection method of C and F adopts the connection method of cementation, friction and occlusion, which is the same as the connection method between steel bar (or section steel) and concrete.

[0088] The base material F is C40 concrete.

[0089] Boron fiber is selected as the reinforced FRP material, and its parameter index is: density--2400~2650kg / m 3 ; Tensile strength - 3200 ~ 5200MPa; Modulus - 350 ~ 400GPa.

[0090] For FRP concrete piles, the boron fiber ribbed bars used are rods (bars), such as figure 2 As shown in FRP-J; its surface is with various uneven patterns (ribs), such as Figure 4 shown in S-DL.

[0091] FRP concrete pile,...

Embodiment 2

[0095] A kind of FRP concrete pile of the present invention, its structural composition is as follows:

[0096] FRP concrete pile is composed of base material C and reinforcement (or profile) F, such as figure 1 As shown; the arrangement of FRP reinforcement adopts the arrangement of prefabricated steel plate with concrete pipe pile; the connection method of C and F adopts the connection method of cementation, friction and occlusal, which is the same as the connection method between steel bar (or section steel) and concrete .

[0097] The base material is C60 concrete.

[0098] The reinforced FRP material is a material of high modulus carbon fiber, and its parameter index is: density--1750kg / m 3 ; Tensile strength - 2400MPa; Modulus - 350GPa.

[0099] For FRP concrete piles, the high modulus carbon fiber cloth used is a sheet (cloth), such as figure 2 As shown in FRP-P; its surface is with various uneven patterns (indentations), such as Figure 5 Shown in S-YH.

[0100]...

Embodiment 3

[0104] A kind of FRP concrete pile of the present invention, its structural composition is as follows:

[0105] FRP concrete pile is composed of base material C and reinforcement (or profile) F, such as figure 1 As shown; the arrangement of FRP reinforcement adopts the arrangement of cast-in-place concrete piles; the connection method of C and F adopts the connection method of cementation, friction, and occlusal, which is the same as the connection method between steel bars (or steel bars) and concrete.

[0106] The base material is C20 concrete.

[0107] The reinforced FRP material is made of ordinary carbon fiber, and its parameter index is: density--1750kg / m 3 ; Tensile strength - 3000MPa; Modulus - 230GPa.

[0108] For FRP concrete piles, the common carbon fiber (CFRP) ribbed bars used are bars (bars), such as figure 2 Shown in FRP-J; square cross-section, such as image 3 As shown in FRP-SEC-F; its surface is with various uneven patterns (ribs), such as Figure 4 sh...

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Abstract

Disclosed is a fiber reinforcement compound material reinforced concrete pile. The structure thereof comprises the following compositions: the fiber reinforcement compound material (FRP) reinforced concrete pile which is composed of a base body material and reinforcements; the base body material, which adopts the current various concrete; a reinforcement compound material (FRP), which adopts one of a plurality of the materials of carbon fibers, aramid fibers, glass fibers, PBO organic fibers, boron fibers, ceramic fibers, high-tenacity polyethylene fibers, basalt fibers and hybrid fibers; the FRP material used in the FRP concrete pile adopts bar stock, sheet material, section material, sandwich plate, honeycomb plate and grid material; the sectional shape adopts a round, rectangular or an irregular shape; the surface is smooth, with various uneven patterns; the FRP concrete pile is manufactured through a cast-in-situ method, and the prefabrication method can be also adopted; the reinforcement material connection adopts bundling with durable fiber material, bonding with durable colloidal material, or durable bolts; pre-stress can be exerted to the FRP reinforcement material in the reinforcement compound material (FRP) concrete pile.

Description

(1) Technical field: [0001] The invention provides a fiber-reinforced composite material-reinforced concrete pile and its manufacturing and construction methods, which relate to a new material and new technology for improving the durability of ordinary pile foundation structures, and belong to the technical field of civil engineering materials and construction in civil engineering. (2) Background technology [0002] For infrastructure construction in offshore, coastal and reclamation sites and western saline soil sites, reinforced concrete pile foundations are often required. Because the soil in these sites contains a large amount of salt that is corrosive to steel bars, it poses a great threat to the durability of pile foundations. The service life of reinforced concrete structures in many such environments is only ten years or even a few years. Since it is almost impossible to repair the pile foundation after the construction of the superstructure, the durability of the pi...

Claims

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Application Information

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IPC IPC(8): E02D5/22
Inventor 黄新张金柱李战国范一锴
Owner BEIHANG UNIV
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