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A kind of production method of high-strength concrete prefabricated piles mixed with fiber-reinforced plastic bars

A technology of fiber-reinforced plastics and high-strength concrete, applied in reinforcement molding, manufacturing tools, ceramic molding machines, etc., can solve the problems of bending and pulling resistance, meet the requirements of engineering design and actual use, general bending bearing capacity, pull-out resistance General performance and other problems, to achieve the effect of low density, excellent fatigue resistance and strong corrosion resistance

Active Publication Date: 2011-11-30
JIANHUA CONSTR MATERIALS (JIANGSU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recently, pipe piles have been applied to some civil engineering fields such as housing construction excavation, municipal engineering excavation, underground building excavation, etc., but the horizontal flexural bearing capacity of prestressed concrete pipe piles produced by existing production methods General, high brittleness, average pullout resistance, difficult to meet the requirements of some engineering design and actual use in terms of bending resistance and pullout resistance

Method used

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  • A kind of production method of high-strength concrete prefabricated piles mixed with fiber-reinforced plastic bars
  • A kind of production method of high-strength concrete prefabricated piles mixed with fiber-reinforced plastic bars
  • A kind of production method of high-strength concrete prefabricated piles mixed with fiber-reinforced plastic bars

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Effect test

Embodiment 1

[0036] A kind of production method of the high-strength concrete prefabricated pile mixed with fiber-reinforced plastic bars of the present invention comprises the following steps:

[0037] A, a plurality of prestressed steel bars 51 are arranged circularly, and then a plurality of prestressed steel bars 51 are welded with spiral ribs 52 to form a prestressed steel skeleton cage 5; a plurality of non-fiber reinforced plastic bars 61 are arranged circularly, Then bond fiber-reinforced plastic spiral ribs 62 on the outside of the multiple fiber-reinforced plastic ribs to form a fiber-reinforced plastic rib cage 6, and install the fiber-reinforced plastic rib cage 6 in the prestressed steel rib cage 5 to form a double Laminated composite rib cage;

[0038] B. Hang the double-layer composite steel frame cage in step A in the lower mold body of the corresponding mold tool that has been cleaned up, and install the end plate 2 connected with the hoop plate 3 on the double-layer compo...

Embodiment 2

[0044] A kind of production method of the high-strength concrete prefabricated pile mixed with fiber-reinforced plastic bars of the present invention comprises the following steps:

[0045] A, a plurality of prestressed steel bars 51 are arranged circularly, and then the spiral ribs 52 are welded on the outside of the plurality of prestressed steel bars 51 to form a prestressed steel skeleton cage 5; a plurality of non-fiber reinforced plastic bars 61 are arranged in a ring A single-layer composite rib cage is formed on the spiral rib 52 of the prestressed steel skeleton cage 5;

[0046]B. Hang the single-layer composite rib skeleton cage in step A in the lower mold body of the corresponding mold tool that has been cleaned up, and install the end plate 2 connected with the hoop plate 3 on the single-layer composite rib skeleton cage respectively. both ends;

[0047] C. First close the upper mold body, tighten the locking screws of the upper and lower molds, and then send the ...

Embodiment 3

[0052] A high-strength concrete prefabricated pile mixed with fiber-reinforced plastic bars produced by the method of the present invention is specifically a hollow circular pile with circular end plates 2 at both ends, a plate thickness of 20 mm, an outer diameter of 500 mm, and an inner diameter of 250 mm. The body length is 10m. The diameter of the prestressed reinforcement skeleton cage 5 is 406 mm, the diameter of the fiber-reinforced plastic reinforcement cage 6 is 306 mm, and the prestressed reinforcement 51 can adopt ten prestressed concrete steel rods with a diameter of 10.7 mm and a length of 10 m, spiral reinforcement 7 6.0mm cold drawn wire is used. The fiber-reinforced plastic bars 6 can use 10 glass fiber bars with a diameter of 12 mm and a length of 8 m to 9.7 m, and the fiber-reinforced plastic spiral bars 62 can use 6.0 mm glass fiber bars. The strength grade of concrete 4 can be designed with traditional formula as C60 or C80. The end plates 2 at both ends ...

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Abstract

The invention discloses a production method of a high-strength concrete precast pile doped with a fiber enhanced plastic tendon. The method comprises the following steps: A. circularly arranging a plurality of prestressed reinforcements, welding spiral tendons on the outer sides of the plurality of prestressed reinforcements to cause the plurality of prestressed reinforcements to form a prestressed reinforcement skeleton cage, and arranging fiber enhanced plastic tendons in the prestressed reinforcement skeleton cage to form a compound skeleton cage; B. hoisting the compound skeleton cage into the lower die body of a cleaned die, and respectively installing end joint plates connected with an anchor ear plate onto two ends of the compound skeleton cage; C. conveying the pre-stirred concrete material to the die body by a concrete stirrer; D. horizontally putting the die in step C, and carrying out prestressed stretching on the compound skeleton cage; E. carrying out centrifugal shaping on the stretched die on a centrifugal machine, and completely pouring residual slurry on the inner wall after shaping; and F. hoisting the above die into a steam curing pool for steam curing, and removing the die after steam curing to obtain the pile.

Description

technical field [0001] The invention relates to a production method of high-strength concrete prefabricated piles mixed with fiber-reinforced plastic bars. Background technique [0002] With the improvement of the importance of modern buildings and the continuous increase of building height, higher requirements are put forward for the bearing capacity of the foundation. The natural foundation can no longer bear the load from the upper building. At present, reinforced concrete is used as the The foundation piles of the foundation are formed by pressing the piles into the ground with a pile driver to allow the upper part of the foundation piles to carry the building. Among them, the stress concrete pile is more prominent, and is widely used in the construction of buildings, roads, docks and other foundation projects due to its superior performance. The structure of prestressed concrete prefabricated piles produced and sold on the market is mainly composed of a prestressed ste...

Claims

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Application Information

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IPC IPC(8): B28B21/64B28B11/24
Inventor 苟德胜陈巧
Owner JIANHUA CONSTR MATERIALS (JIANGSU) CO LTD
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