Overall assembly type reinforcement printing construction method for 3D printing concrete structure

Abstract

The invention discloses an overall assembly type reinforcement printing construction method for a 3D printing concrete structure. The method comprises the steps that a structural member is selected, and a reinforcement material is determined according to the stress distribution and magnitude in the bearing force limit state and the stress strength ratio in the normal use bearing force state; the positions, number and forms of connecting sleeves are determined according to the joint point positions and the number of intersections of the reinforcement material; the printing process of concrete, the reinforcement material and the connecting sleeves is determined according to the spatial appearance of the structural member, and the timing positioning connection and pushing program of the reinforcement material and the connecting sleeves is edited according to the printing process; and a concrete layer is formed along the printing process, the reinforcement material and the connecting sleeves are placed into the unhardened concrete layer according to the timing positioning connection and pushing program and assembled, and the 3D printing concrete structure with the spatial multi-directional connecting sleeves integrally reinforced is formed. The 3D printing concrete structure prepared through the construction method forms a spatial rigidity-enhanced framework, and the spatial rigidity-enhanced framework is close to a steel reinforcement framework formed through a traditional construction method.

Description

technical field [0001] The invention belongs to the technical field of intelligent construction and civil construction, and in particular relates to an integrally assembled reinforcement printing construction method for 3D printing concrete structures. Background technique [0002] 3D printing technology highlights its strong technical advantages because of the advantages of mold-free construction, automated construction, and digital construction, and can realize mechanized and automated construction projects. There are many existing 3D printing concrete materials, such as CN201910134165, CN20 1810913908, CN201910133642, etc. Concrete materials have disadvantages such as low tensile strength and easy brittle failure. Using rigid aggregates and rigid fiber reinforced concrete is difficult to achieve continuous and effective reinforcement across the printing layer strips. The use of flexible continuous reinforcement compatible with the printing process and process has been pr...

AI Technical Summary

Problems solved by technology

However, the reinforcement formed by these two technologies is a kind of contact lap joint, which cannot form a continuous rigid joint reinforced skeleton. When the reinforced concrete structure bears a large load or is subjected to earthquake, impact and other loads, it is difficult to ensure reinforcement. Rigidity and strength of skeleton and synergistic performance with concrete structure

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