3D-Printed Formwork Elements for Material-Saving Building Components
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Solution Overview
Problem
Current construction methods for multi-story buildings face challenges in reducing material consumption, especially for reinforced concrete ceilings, which account for 65% of material volume, and require significant labor and resources, while also failing to optimize acoustic and thermal properties effectively.
Innovation Solution
A multifunctional system using large-format, three-dimensional additive manufacturing to integrate sound absorbers and reinforcement modules into formwork elements, optimizing acoustic, thermal, and mechanical properties through a computer-aided design process, allowing for material savings and improved building performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional solid construction methods are used for reinforced concrete ceilings, then structural integrity is ensured, but material consumption increases significantly (accounting for 65% of total material volume)
Solution Approach 1:
The patent applies local quality by varying the thickness and density of concrete in different regions of the ceiling structure. The additive manufacturing process enables localized material deposition where structurally necessary, creating non-uniform thickness profiles that optimize strength-to-material-ratio. This resolves the contradiction by providing structural integrity only where needed rather than uniform thick concrete throughout.
Solution Approach 2:
The patent utilizes curved and organic forms in ceiling design enabled by additive manufacturing. These curved geometries distribute stresses more efficiently compared to flat conventional slabs, reducing the overall material required while maintaining structural integrity. The curvature allows for optimized load paths that reduce concrete consumption by up to 65%.
2Ease of manufacture
If uniform slab thickness is applied to entire surface for simplicity, then manufacturing ease is improved, but stress optimization is lost
Solution Approach 1:
The patent changes the thickness parameter of the concrete slab continuously across the surface rather than maintaining a uniform value. The additive manufacturing process allows for parametric design where thickness varies based on structural requirements, achieving stress optimization while remaining manufacturable through automated layer-by-layer construction.
Solution Approach 2:
The patent transitions from two-dimensional uniform slabs to three-dimensional varied thickness structures. By utilizing the vertical dimension for thickness variation, the design achieves stress optimization without significantly complicating the manufacturing process, as the variation is achieved through controlled material deposition height rather than complex formwork.
3Adaptability or versatility
If acoustic panels and building services are integrated into ceiling elements, then acoustic comfort and functionality are improved, but manufacturing complexity increases
Solution Approach 1:
The patent merges acoustic panels, building services conduits, and structural ceiling elements into a single integrated component. The additive manufacturing process enables all these features to be constructed in one continuous operation without requiring separate assembly steps, thus reducing manufacturing complexity despite increased functional integration.
Solution Approach 2:
The ceiling element is designed to perform multiple functions simultaneously: structural support, acoustic absorption, and building services routing. This multi-functionality is achieved through a single manufacturable design that consolidates what would traditionally require multiple separate components and assembly operations, thereby not increasing overall manufacturing complexity.
4Productivity
If traditional formwork construction is used, then structural components can be formed, but labor requirements and time consumption increase significantly
Solution Approach 1:
The additive manufacturing process is self-service in that it directly constructs the ceiling structure and formwork elements without requiring separate manual formwork installation and subsequent demolition. The system builds components in-place layer by layer, eliminating the time-consuming cycles of traditional formwork assembly and disassembly, thereby significantly improving productivity and reducing time loss.
Solution Approach 2:
The patent replaces manual mechanical formwork construction with automated additive manufacturing technology. The robotic or automated extrusion system deposits and cures concrete directly to form structural elements, substituting labor-intensive mechanical formwork operations with automated material deposition, thus increasing construction speed and reducing time consumption.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system reduces concrete consumption by 40%, enhances acoustic and thermal comfort, and minimizes waste, while ensuring structural integrity and customizable building components with integrated sound absorption and reinforcement.
Implementation Method 1
the cavity extends from an inlet opening with an inlet diameter to a maximum inner diameter larger than the inlet diameter and forms a Helmholtz resonator for sound suppression
Data Source
Figure 1a~2c
Figure 3a~4
Figure 5a~5b
AI summary
The present invention relates to a multifunctional system and a method for forming structural components, as well as a method for optimizing them. A method according to the invention for forming structural components (110) comprises providing formwork elements (20) prefabricated by means of three-dimensional concrete printing with defined acoustic, thermal, and mechanical properties and optimized by an inventive method for optimizing a system according to the invention for forming structural components (110); providing prefabricated reinforcement modules (30) adapted to the optimization; providing a falsework or formwork frame (112); arranging the formwork elements (20) and the reinforcement modules (30) on the falsework or formwork frame (112) to form a common structural component structure, wherein the reinforcement modules (30) define a homogeneous filling zone for completion with cast-in-place concrete (114);the insertion of further flexural and shear reinforcement (120) and/or pipe elements (130, 840) for thermal component activation into the reinforcement modules (30); and the addition of cast-in-place concrete (114) to the filling zone, so that the individual formwork elements (30) form recess bodies in the cast-in-place concrete (114).