A 3D printed prefabricated reinforced concrete component and its manufacturing method

Abstract

A 3D printed prefabricated reinforced concrete component and a manufacturing method thereof. Components include: 3D printed concrete shell, 3D printed concrete component internal structure, longitudinal reserved holes, longitudinal steel bars and stirrups; 3D printed concrete shell is printed around the component axis according to the component shape; 3D printed concrete component internal structure is printed on Inside the shell; the longitudinal reserved holes are located in the internal structure of the concrete member; the longitudinal steel bars are penetrated into the reserved holes, and the grouting material is poured into the holes to fix the longitudinal bars; The orientation concentric is placed directly on the shell part of the printed concrete. The 3D printed concrete components do not need to use templates, and can produce component forms that are difficult to achieve in traditional construction, which can improve the design freedom of components; the reinforcement mode of the 3D printed concrete components is similar to that of traditional reinforced concrete components, and traditional theories can be used Design, and easy to make.

Description

technical field [0001] The invention relates to the technical field of concrete 3D printing in construction engineering, in particular to a 3D printed assembled reinforced concrete component and a manufacturing method thereof. Background technique [0002] Compared with the traditional concrete cast-in-place construction technology, concrete 3D printing technology has the following advantages: (1) No need to use concrete formwork and its supports during the construction process, and no need to vibrate the concrete after printing, which reduces the consumption of materials and labor; (2) The construction speed is fast and the construction time is short; (3) through highly accurate design and printing, the possibility of construction errors is reduced; (4) the degree of construction automation is high, which can improve the construction environment and reduce labor consumption; Component shapes are limited, and components with different shapes can be printed, thus improving th...

AI Technical Summary

Problems solved by technology

[0004] Due to the special construction process of 3D printing concrete layer by layer, it is difficult to use traditional methods for steel reinforcement construction. Recently, researchers have used composite fibers or fine steel wires to reinforce concrete members, but this method is different from traditional reinforcement methods. It is difficult to carry out calculation analysis and engineering application according to the current method and engineering experience; another construction method is to print the hollow concrete shell first, and then put the steel cage which has been bound or welded in advance, and then pour the concrete and Vibration, this method essentially just eliminates the work of setting up the formwork, the degree of automation in the laying of steel bars is low, and the advantages of 3D printing are not fully utilized

Images