Stuttgart / Hausleiten Publicly funded research — ZÜBLIN / STRABAG 2022–2024

3DLight_OnSite (3DLOS)

Overview

3DLight_OnSite (3DLOS) is a publicly funded research project led by ZÜBLIN, the German subsidiary of the STRABAG group, in cooperation with universities, research institutes, and industrial partners. Launched in February 2022 from the Stuttgart Innovation Center, the project develops mobile construction-site robots that 3D-print non-load-bearing wall elements directly on site. Inspired by the honeycomb structure of bees, the lightweight layer-by-layer concrete walls use less than 50% of the concrete a conventional wall requires — cutting cost, emissions, and waste in parallel. The pipeline runs end-to-end from a BIM model to printable machine instructions for individually mobile robots that operate alongside conventional construction crews.

Scope

OnceMore developed the software for the automated generation of 3D-printing paths from arbitrary wall geometries, together with the automated G-code generation that drives the on-site robot.

3DLOS media 1 3DLOS media 2

Outcome

Robot assembly and print testing through 2023, with target deployment in 2024 on a STRABAG/ZÜBLIN construction site. As the system matures, the goal is to parallelise on-site 3D printing alongside conventional building processes, scaling the more-than-50% reduction in concrete use to production projects.

Capabilities Applied

  • BIM-to-machine-instruction pipelines
  • Mobile multi-robot coordination on the construction site
  • Bionic, honeycomb-inspired lightweight wall geometry
  • Layer-by-layer 3D concrete printing integrated with conventional construction