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A kind of integrated construction device and method of 3D printing frp reinforced concrete structure

A technology of concrete structure and 3D printing, applied in the direction of building structure, construction, etc., to achieve the effect of improving the degree of freedom, high tensile strength, and simple construction process

Active Publication Date: 2019-06-11
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there is no known construction method for simultaneous printing of FRP bars and concrete.

Method used

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  • A kind of integrated construction device and method of 3D printing frp reinforced concrete structure
  • A kind of integrated construction device and method of 3D printing frp reinforced concrete structure
  • A kind of integrated construction device and method of 3D printing frp reinforced concrete structure

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0057] The preparation process of the FRP tendon is as follows: continuous fiber filament / rope bundle → fiber dipping → pultrusion forming through a heating mold → winding into a threaded surface → cooling forming → cutting → FRP tendon winding into a roll;

[0058] The continuous fiber filament / rope is any one or a combination of glass fibers, polypropylene fibers, basalt fibers, carbon fibers, and aramid fibers;

[0059] Said fiber impregnation, wherein the glue is any one of thermoplastic resins.

[0060] In this application, FRP bars are used instead of steel wire ropes. FRP bars are more flexible after heating, so the diameter of FRP bars can be much larger than that of steel wire ropes, which is beneficial to improve the effectiveness of FRP bars for concrete reinforcement. In the present invention, the diameter of the pultrusion die is not greater than 5mm, and the diameter of the FRP tendons used is not greater than 5mm, which is smaller than that of ordinary FRP tendo...

Embodiment 1

[0062] This embodiment takes the 3D printing of FRP reinforcement tailings sand fiber concrete structure printing as an example.

[0063] A kind of construction method of 3D printing FRP reinforcement tailings sand fiber concrete structure, the steps of this method are:

[0064] S1. Separate digital modeling and STL file generation for FRP bars and concrete structures;

[0065] Using Solidworks to digitally model the FRP bars and tailings sand fiber structures and export STL files.

[0066] S2. Slicing the three-dimensional model modeled in step S1 layer by layer, and separately printing path planning for FRP bars and concrete structures;

[0067] Use the 3D model slicing software Slic3r to slice the digital model of FRP bars and tailings sand fiber concrete. The diameter of the concrete printing head 18 is set to 12mm, the thickness of the first layer is 4mm, the thickness of the remaining layers is 5.5mm, and the printing speed is 45mm / s; using software Comes with concentr...

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Abstract

The invention relates to an integrated building device and method of a 3D-printing FRP reinforced concrete structure. The device comprises a spiral blade and extrusion type concrete printing head, a material barrel, FRP rebar extrusion equipment and a control system and is characterized in that the upper portion of the concrete printing head is connected with the material barrel, a bearing sleevesthe material barrel, a bearing outer ring is fixed with a bull gear, a pinion meshing with the bull gear is arranged on one side of the bull gear, the pinion is connected with the output shaft of a first stepping motor, and the first stepping motor is fixed on the pinion; the lower surface of the bull gear is connected with the FRP rebar extrusion equipment through a connecting rod; the FRP rebarextrusion equipment comprises a FRP rebar bobbin, an FRP rebar feeding unit, a fixing plate, a front guide groove, a shearing unit, a FRP rebar refeeding unit, a rear guide groove, a radiating unit and a heating unit. By the integrated building device which is good in engineering feasibility and application value, integrated building of concrete and FRP rebar can be achieved.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and in particular relates to an integrated construction device and method for 3D printing FRP reinforced concrete structures. Background technique [0002] In recent years, 3D printing technology has become a hot topic in society, and printing materials include plastics, metals, ceramics, soft materials, concrete, etc. 3D printing concrete technology has many advantages such as free design and construction, high degree of automation, fast construction speed, low labor cost, and low environmental pollution. In recent years, it has received extensive attention and significant development in the field of civil engineering. The recent reports of 3D printed concrete structures everywhere, such as 3D printed bridges, 3D printed houses, etc., have largely confirmed the feasibility of applying 3D printing technology to the field of civil engineering. However, 3D printing adopts a layer-by-laye...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/16
CPCE04B1/16
Inventor 马国伟李之建王里
Owner HEBEI UNIV OF TECH
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