The Eindhoven University of Technology (TU Eindhoven) is 3D printing a concrete bicycle bridge in collaboration with construction group BAM Infrastructure (Royal BAM Group).
该桥长8米，宽3.5米，有1厘米的混凝土层。该桥位于埃因霍温（Eindhoven）外的小镇Gemert小镇，预计将于2017年9月完成并组装。
Gif shows the concrete extruding in 1 cm layers. Images via BAM Group.
可持续桥梁大楼
Designed by engineering firm Witteveen + Bos and 3D printed at TU Eindhoven, BAM’s chosen method has several advantages for the environment.荷兰BAM BAM的主任Marinus Schimmel解释说，
With 3D printing we have no auxiliary materials such as formwork required. This produces significantly less waste and we need to use less scarce resources. Also, this approach has a positive effect on the amount of CO2 emitted during the production of the bridge.
使用特殊配方的混凝土、斜纹布l can maintain its form once printed. This means traditional formwork is not required to keep it in place while it setting. Interestingly, it seems from the images released the nozzle used by TU Eindhoven’s concrete printer appears also to be 3D printed.
现场3D打印
虽然这座3D打印的桥已预先制作，但开发人员设想了未来的场景，其中桥梁将在现场打印3D。缩短过程，减少环境影响并消除组装零件的需求是该目标的一些原因。
现场3D打印是该行业越来越多的公司的最终目标。Cybe Construction其他荷兰集团已经开发了一个混凝土3D打印机在橡胶轨道轮上操作以在建筑工地上使用。CYBE RC 3D打印机最近在迪拜部署到construct a drone R&D laboratory。
3D printed bridges
Although impressive, the Dutch project is not the first 3D printed bridge as the Institute for Advanced Architecture of Catalonia (IAAC) 3D printed a pedestrian bridge in Madrid last year. 3D Printing Industry interviewed the IAAC team behind the project to了解有关打印过程的更多信息。
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Featured image shows an artist’s impression of the finished bridge. Image via Bam Construction.
