Simulation of the Carola Bridge collapse in Dresden, Germany, in September 2024, performed with the Bullet Constraints Builder (BCB) structural simulation software for Blender. The model was built from plans & photos true to scale. Reinforcement and material details were partially estimated based on photos of the collapsed bridge.
https://en.wikipedia.org/wiki/Carola_Bridge

For the first time, a new feature of the BCB was used in this simulation that effectively compensates for the solver-induced sagging of long structures, such as this bridge. This reduces the overall computational effort for the simulation of bridges, since usually many more computational iterations are necessary to keep the spans straight.

The GitHub repo will be updated in the next few days.

01:25 Demolition

Simulated with BCB: https://github.com/KaiKostack/bullet-constraints-builder
BCB blog: https://inachuslaurea.wordpress.com
This software is developed at the Laurea University of Applied Sciences, Finland. Written within the scope of the EU Inachus FP7 Project (607522):
Technological and Methodological Solutions for Integrated Wide Area Situation Awareness and Survivor Localisation to Support Search and Rescue (USaR) Teams.

Music: John Bartmann – dark-dyne-master (CC0)ll