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A construction method of space aggregate reinforced 3D printed concrete structure

A concrete structure, 3D printing technology, applied in the fields of building materials, building structures and modeling design, can solve the problems of poor overall structural performance enhancement efficiency, maintaining space angle, limited bonding effect, etc., to achieve technical superiority, convenience and enhancement The overall bearing capacity and the effect of improving shear resistance

Active Publication Date: 2020-08-25
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the aspect ratio of the space ring is too large to maintain the space angle during the printing process, and the smooth boundary results in limited bonding, and the enhancement efficiency of the overall structural performance is not good.

Method used

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  • A construction method of space aggregate reinforced 3D printed concrete structure
  • A construction method of space aggregate reinforced 3D printed concrete structure
  • A construction method of space aggregate reinforced 3D printed concrete structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1 Space truss girder is used as the construction method of the structural member of bridge

[0052] 1. Determine the structural form and spatial structure according to the structural and functional requirements. The main stress components of bridges are generally beam or arch structures. 3D printing cement-based materials have high compressive strength and low tensile strength. Choosing beam structures as the main stress structure of bridges can make full use of new space aggregate reinforcement. Characteristics of the tensile strength of cement-based materials. The spatial modeling of the beam structure is selected through computer topology optimization after modeling, and the optimized structural shape is used as the structural component of the 3D printed bridge.

[0053] 2. Carry out mechanical calculation and analysis on the structural components, and determine the printing weaving process and the type of space aggregates added to the structural componen...

Embodiment 2

[0058] Embodiment 2 relates to a construction method in which a circular column is a structural member of a bridge

[0059] 1. Carry out mechanical calculation and analysis on the column, and determine the printing weaving process and the type and amount of rigid aggregate added to the structural member according to the limit state of the structural bearing capacity and the selection of the limit state of normal use.

[0060] 3. Prepare 3D printing materials; according to the positioning and dosage of the selected spatial rigid aggregate, edit the electromagnetic signal and positioning push program of the spatial aggregate.

[0061] 3. According to the printing and weaving process, the 3D printing substrate is printed layer by layer. There is a mechanical arm next to the printing head to carry the new space aggregate bin, and the electromagnetic signal is edited along with the printing path. The mechanical bayonet design and electromagnetic positioning at the end are used to re...

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Abstract

The invention discloses a construction method of a space aggregate reinforced 3D printing concrete structure: selecting structural components, performing mechanical analysis, determining the basic dosage of implanted reinforcing bars or braided ropes / wires and a printing and weaving process; determining the type of space aggregates , positioning and dosage; formulate 3D printing materials; edit the electromagnetic signal and positioning push program of spatial aggregates according to the selected positioning and dosage of spatial rigid aggregates; extrude 3D printing materials and implants along the printing weaving process path Reinforcing bars or braided ropes / wires, and uniformly sprinkle the space rigid aggregates, respectively, to realize the connection between the space aggregates and the connection between the space aggregates and the bars, ropes or wires. One-time formation; or segmented printing to form space-aggregate-enhanced 3D printed concrete structures. The construction method can form continuous reinforcing space aggregate, effectively improve the mechanical performance of the concrete structure space, and improve the tensile strength and crack resistance of the concrete structure space.

Description

technical field [0001] The invention belongs to the technical fields of building materials, building structures, modeling design, etc., and in particular relates to a construction method of a space aggregate reinforced 3D printed concrete structure. Background technique [0002] As a rapid prototyping and additive manufacturing technology, 3D printing has been rapidly and widely promoted in various industries since its invention. 3D printing buildings and structures can effectively reduce construction waste, improve construction efficiency, shorten construction period, reduce labor, improve mechanization level, achieve energy saving and emission reduction as a whole, and contribute to environmental improvement. Since 3D printing can be controlled by a computer to achieve any shape design in space, it can combine structural forces with architectural aesthetics, reflecting the artistry of architecture. Due to the uniqueness of the technology, reinforcement cannot be carried o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B33Y10/00
CPCB28B1/001B33Y10/00B33Y50/00B33Y70/10B28B23/022B33Y50/02B33Y70/00B28B1/522
Inventor 孙晓燕王海龙叶柏兴陈龙张治成黄海燕
Owner ZHEJIANG UNIV
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