Photo credit: NAARO
Innovative 3D printing techniques can now be used to build houses, but what about other structures? ETH architects and engineers from the Block Research Group in collaboration with Zaha Hadid Architects wanted to see just how far they could go by 3D-printing a footbridge in Venice using unreinforced concrete. Called “Striatus,” this footbridge was built with concrete blocks that form an arch, similar to the traditional masonry bridges. Read more for a video, additional pictures and information.
Its compression-only structure enables forces to travel to the footings, which are tied together on the ground, and the dry-assembled construction is stable solely because of its geometry. This new type of 3D-printed concrete is not applied horizontally like normal, but instead at specific angles such that they are orthogonal to the flow of compressive forces. This method ties together the printed layers, without requiring reinforcement or post-tensioning.
- Self-developed Silent Motherboard: The Ender-3 V2 built-in self-developed silent motherboard, which has stronger anti-interference, faster and more stable motion performance, silent printing and low decibel operation.
- UL Certified MeanWell Power Supply: Equipped with MeanWell power supply, produced by the listed company with mature technology, meeting all the needs of fast heating and long-time printing. Moreover, the power supply is concealed in the machine, making it much safer.
- Effortless Filament Feed-in: Ender-3 V2 adds a rotary knob on the extruder, making loading and feeding filament process much easier; Brand new operation UI system and 4.3" smart color screen greatly improve user experience.
- Resume Printing Function: Can resume printing from the last recorded extruder position after suffering unexpected power outages, saving your time and reducing waste.
- Carborundum Glass Platform: Enable the hotbed heat up quicker and prints adhere better without the warping. Ultra smoothness even on the first layer.
This precise method of 3D concrete printing allows us to combine the principles of traditional vaulted construction with digital concrete fabrication to use material only where it is structurally necessary without producing waste,” said Philippe Block, ETH professor.