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3D printing method of concrete special-shaped beams without web reinforcement

A 3D printing and concrete technology, which is applied in the field of making concrete beams, can solve problems such as difficulties in making special-shaped beams, and achieve the effects of industrialization of buildings, avoiding shear damage, and reasonable stress

Active Publication Date: 2021-02-09
SOUTHEAST UNIV
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  • Claims
  • Application Information

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Problems solved by technology

However, in the traditional concrete structure production method, due to the limitation of formwork setting, the production of special-shaped beams is full of difficulties, and 3D printing concrete technology does not require the characteristics of formwork, which just solves this problem

Method used

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  • 3D printing method of concrete special-shaped beams without web reinforcement
  • 3D printing method of concrete special-shaped beams without web reinforcement
  • 3D printing method of concrete special-shaped beams without web reinforcement

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Embodiment Construction

[0029]The present invention will be further described in detail below in conjunction with the drawings and specific embodiments.

[0030]The method of the present invention adopts 3D concrete direct printing technology to print the beam member upside down from top to bottom.

[0031]The first step is to print the rectangular flange layer 1. See the printing pathfigure 1 Because the beam flange is mainly compressed, the rectangular flange layer adopts a printing path from the edge to the center and prints layer by layer until the design thickness of the rectangular flange layer is satisfied.

[0032]The second step is to print the curved web layer 2 on the basis of the printed rectangular flange layer. See the printing pathfigure 2 , In order to facilitate printing, print reciprocatingly along the width of the beam in a straight zigzag path, stacking layer by layer; the outer contour of the printed concrete plane of each layer is hyperbolic, and the length of each concrete strip decreases sym...

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Abstract

The invention discloses a 3D printing method of concrete special-shaped beams without web reinforcement. A concrete special-shaped beam member without the web reinforcement comprises a rectangular flange layer, a curved web layer, a bent reinforcing mesh layer and an external concrete cover in sequence from top to bottom. The 3D printing method is characterized by comprising the following steps ofprinting the rectangular flange layer and the curved web layer in sequence by adopting a 3D concrete printing technique, then manually arranging the reinforcing mesh layer, and finally, printing theconcrete cover by adopting the 3D concrete printing technique. According to the method, through modeling optimization, concrete is arranged according to the stress condition of the beam, so that the using amount of concrete materials is reduced, and reinforcing steel bars are laid in the printing direction in a printing process, so that the inconvenience in construction due to post installation ofhorizontal bars is avoided, additionally, the problem of bonding of the reinforcing steel bars and the concrete during post installation is solved, and the construction is simplified.

Description

Technical field[0001]The invention relates to a method for manufacturing a concrete beam, in particular to a method for 3D printing a concrete special-shaped beam without web reinforcement.Background technique[0002]With the continuous development of 3D printing technology, 3D printing has been widely used in industrial modeling, packaging, manufacturing, architecture, art, medicine, aerospace and other fields. The application of 3D printing technology in the field of construction is still in the exploratory stage. Due to its printing method, it cannot be reinforced in the direction perpendicular to the printing path, so the application of 3D printing concrete is greatly restricted. 3D printing concrete has significant advantages in saving materials, reducing environmental pollution, and saving manpower and material resources. Therefore, it is necessary to seek practical applications for it to promote its further development in the construction industry.[0003]Many experts and scholar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G21/00E04G21/12B28B1/00B28B23/02B33Y10/00B33Y80/00
CPCE04G21/00E04G21/12B28B1/001B28B23/02B33Y10/00B33Y80/00
Inventor 蔡建国杜彩霞张骞冯健
Owner SOUTHEAST UNIV
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