Later in 2018, the Oudezijds Achterburgwal canal in Amsterdam is set to be graced with a 12 meter long3D printed steel bridge, made by Robotic Additive Manufacturing (RAM) technology developerMX3D.
Constructed using ABB robotic arms andWAAM technology, after installation the company has confirmed that a second, digital, bridge construction project will begin.
MX3D is collaborating with theCambridge Centre for Smart Infrastructure and Construction(CSIC),Imperial College London, andThe Alan Turing Institutein the UK to install sensors on the 3D printed bridge.
Data gathered by these sensors will be used to help build a Digital Twin of the structure, making it a living, and atmospherically observant part of the city.
Video courtesy The Times, Neil Bowdler and MX3D
An engineering first
An ambitious project, MX3D’s founders envisioned a bridge to be 3D printed in-situ. The robotic arms were initially intended to move with the structure, and 3D print across a support-free space.
Realizingthe challenges of this conceptthrough trial and error, MX3D has since opted to 3D print the bridge in segments and assemble them afterwards across the canal. Nevertheless, MX3D’s effort remains a world first in engineering.
Professor Mark Girolami is leading sensor and Digital Twin development for MX3D at Imperial College London. He calls the ambitious 3D printed bridge project “a powerful embodiment of what data-centric engineering can deliver as a discipline.”
Girolami and the team at Imperial’s Steel Structures group, are in charge of developing the initial Digital Twin model. So far, the team has been testing sample structures to understand how the bridge might respond to different pressures.
A “living” bridge
The CSIC is a facility of theUniversity of Cambridgefunded by the Engineering and Physical Sciences Research Council (EPSRC) and Innovate UK. Working with Imperial’s Steel Structures Group and the Turing Institute, the CSIC is developing the bridge’s sensory nervous system.
When completed, the bridge will be capable of supporting pedestrians and cyclists travelling through central Amsterdam. Sensors will be able to provide valuable data about this people traffic and more. CSIC co-investigator Dr. Mohammed Elshafie describes the key features of the system as follows: “The sensors collect data on structural measurements including strain, displacement and vibration and measure environmental factors such as air quality and temperature,”
“这使得工程师监控的“健康”the bridge in real time and observe and record how it changes throughout its lifespan.”
Overall, he says,
“The sensor network provides a ‘nervous system’ for the bridge and creates a living laboratory for the researchers and engineers.”
The next generation of bridges
Autodesk is providing the cloud-based software to collect data generated at the bridge, andThe Amsterdam Institute for Advanced Metropolitan Solutionswill be exploring ways to connect this data to other streams in the city.
Girolami at Imperial concludes, “[this] multidisciplinary approach to capturing the bridge’s data will also mark a step-change in the way bridges are designed, constructed, and managed, generating valuable insights for the next generation of bridges and other major public structures.”
西班牙基础设施集团ACCIONA本月itute for Advanced Architecture of Catalonia (IAAC) in Barcelona have also previously demonstrated efforts at aworld first 3D printed bridge.
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Featured image shows concept visualization of data capture from the 3D printed bridge. Image via MX3D
