Tiếng Việt
The world’s first bridge made with a 3D printer drew mixed reactions, but it is still an important step for 3D technology in general, and 3D printers in particular, to be used more widely in everyday life, saving time and money. The pedestrian bridge is about 12m long and opened on December 14, 2016 in Castilla-La Mancha park in Alcobendas, Spain.According to the Institute for Advanced Architecture of Catalonia, which built the bridge, construction required 8 automated “3D printer” arms working together, pre-programmed from the design. These arms shaped the bridge by laying down stacked layers of molten concrete, then reinforced them with a layer of thermoplastic polymer. This raw material is eco-friendly and is considered one of the greenest building materials.
The bridge made with a 3D printer
The bridge project involved a team of architects, electrical and mechanical engineers, structural engineers and city officials. Even Enrico Dini, who developed D-Shape, a technology that 3D prints large objects by binding layers of sand and inorganic seawater with a magnesium-based binder, took part in the project. The bridge’s shape was designed by the team at IAAC to look like a bridge while also capturing “the complex forms of nature,” which the designers believe makes building the bridge simpler and more efficient. An IAAC representative described the 3D printed bridge design in a speech: “Our design for the bridge minimizes structural weight by keeping only what is truly necessary. With a free-flowing but not overly bold form, we believe it will be a masterpiece that challenges earlier structures built with traditional construction technology and techniques.” However, this first 3D printed bridge also drew mixed reactions. Many readers praised it as a flawless design that is truly environmentally safe. Others were rather disappointed.
Meanwhile, the international press split into two camps: neutral coverage, and coverage that literally trashed it. The Daily Dot, for example, called the bridge a big letdown in a sarcastic article titled “The world’s first 3D printed bridge is the ugliest thing you’ve ever seen.”
The news site Digg titled its story “The world’s first 3D printed bridge is a bizarre structure,” with a large note in quotes: “and gross, too.”
Simulation of the design process and the 3D printer at work
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Frequently asked questions
How does 3D printing work in construction?
Construction 3D printing extrudes or binds materials like concrete or special mortar layer by layer based on a digital design file. The system can be a robotic arm or a large gantry printer, which makes complex curved shapes possible without traditional formwork.
Are 3D printed structures as durable as traditionally built ones?
They can be just as durable if the materials, structural design and reinforcement are calculated correctly. But this is still a developing field, so each structure usually needs its own testing and certification.
What is the biggest benefit of 3D printing in construction?
The biggest benefit is freedom of shape and less wasted material, since material is placed only where the structure needs it. The technology can also shorten construction time for some work and reduce reliance on formwork.
Can ordinary 3D printers print architectural or bridge models?
Yes. FDM, SLA and powder 3D printers are often used to print architectural models, site models and scale bridge models for presentations and research. This is a common use and far more accessible than printing real structures.
Where can I get architectural or site models printed?
You can send your design file or drawings to CT3D via Hotline/Zalo 0975 008 728 or email contact@ct3dgroup.com. The technical team will advise on scale, materials and the right printing technology.
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