3D printingTechnology Application
Not long ago, a unique arched brick bridge appeared at this year’s Venice International
architecture
The venue of the Biennale (Giardini della Marinaressa) aroused the curiosity and attention of passers-by.
It is called “Striatus” and is a 16×12 meter pedestrian bridge. It is assembled from 3D printed precast concrete slabs.
The smooth shape can stand on its own tension without relying on any steel or adhesive reinforcement. It is an architectural work that combines traditional building technology with advanced computer design, engineering and robotic manufacturing technology.
Striatus is a project jointly developed by Zaha Hadid Architects’ Algorithm Design Research Group (ZHACODE), ETHZ (Swiss Federal Institute of Technology Zurich), and incremental3D (in3D), and implemented by Holmic.
The Striatus design shows the perfect combination of traditional masonry structure and advanced technology, and also provides a construction idea that can cut the budget in half: Compared with the traditional reinforced concrete floor manufacturing process, the use of Striatus design and manufacturing methods can save money 70% of the concrete consumption can even save 90% of the steel!
Not only that, but the advantages of ease of assembly and reusability may truly subvert the construction industry in the future-how to change the fundamentals of our design and construction of buildings? Let us take a closer look today.
Design Flow
Through the design of Striatus, the design team tried to establish a new concrete language, using geometric mechanics as the principle to explore the strength and strength of the building form. Integrating design, engineering, manufacturing and construction, the Striatus project has indeed redefined the traditional interdisciplinary relationship.
By using the open source calculation framework COMPAS to perform complex calculations, very accurate component parameters are obtained, with a total of 53 concrete components, thus forming a “striped” compression structural component that does not require mortar or steel.
When the robotic arm simulates printing, each component has a unique number, and the pulp flow rate, pressure, and time will also have a fixed ratio.
In actual operation, it can be done exactly, each block has an average of 500 printing layers
ZHA’s deconstruction of the works is more about seeking the organicity of architecture and advocating the idea of landscape architecture. ZHA hopes to separate people from the traditional space, and integrate the internal and external spaces in a unified and harmonious combination.
The shape of the bridge is also designed with this concept, and the mechanical characteristics must be considered comprehensively.
3D printingConstruction technology
The name of Striatus “stripes” reflects the conceptual logic and manufacturing process of the smallest sub-structure that composes the prefab-concrete strips. Each “stripe” is formed at one time, with no breaks or seams in the middle.
These noodle-like concrete strips are precisely stacked to ensure the highly compressed state of the structure, and the strength is naturally doubled.
Keep staring3D printingIn the process, it seems that there is still some decompression
, 3D printing not only avoids a large number of one-time use
Mould
It can cause waste and labor costs, and it can also be manufactured at a long distance without affecting the environment.
The printed components can be transported directly to the exhibition hall on a small boat.
Field assembly
The assembly process of the entire arch bridge can be briefly summarized as: erection, assembly and dismantling.
Through the construction simulation, it can be seen intuitively that each piece of prefabricated part is not directly assembled, but requires the help of pre-built formwork brackets.
The wooden form forms a grid-like bridge body to provide stress support for the concrete members. The steel tie rods solve the horizontal thrust of the arch during assembly, so that the first step of assembly is completed.
Then, unpack the concrete components that were transported by the boat, and put them together one by one along the five foundations of the bridge.
At the same time, in order to reduce friction, rubber pads are added between the components of the bridge arch.
Bottom-up hand-assembled concrete components.
The construction process is safe and clean, unlike the dirty and messy construction site in our impression.
All assembly is completed, leaving no trace of mud.
Measure and accept the bridge deck structure
Finally, remove the wooden molds and steel brackets.
(Editor in charge: admin)
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