AUTOMATED GENERATION OF BIM MODELS OF EARTHQUAKE DAMAGED BUILDINGS USING LASER SCANNING

Dr. Ling Ma

@ DR. LING MA

Post-earthquake operations

• Pre-event information
  • As-built BIM model
• Seismic responses
  • Seismic simulation
• Exterior appearance
  • Remote sensing
• An as-damaged BIM model?

Point cloud data

As-built BIM model

Seismic simulation

As-damaged BIM

Automated generation of BIM models of earthquake damaged buildings using laser scanning

@ DR. LING MA

Mapping and morphing

Generate many candidate simulations

Case matching

Lack of full-scale specimen

@ DR. LING MA

E-Defense 6 Story Shake Table

National Building Research Institute at Technion

Ma, L.*, Sacks, R., Zeibak-Shini, R., and Filin, S. (2015). “A Computational Procedure for Generating Specimens of BIM and Point Cloud Data for Building Change Detection.” Computing in Civil Engineering 2015, 684–691.

Synthetic specimen

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• Manually built as-damaged BIM models
• Laser scanner emulator

Ma, L.*, Sacks, R., Zeibak-Shini, R., Aryal, A., and Filin, S. (2016). “Preparation of Synthetic As-Damaged Models for Post-Earthquake BIM Reconstruction Research.” Journal of Computing in Civil Engineering, 30(3), 04015032. (Impact Factor: 1.798)

Synthetic specimen

@ DR. LING MA

Ma, L.*, Sacks, R., Zeibak-Shini, R., Aryal, A., and Filin, S. (2016). “Preparation of Synthetic As-Damaged Models for Post-Earthquake BIM Reconstruction Research.” Journal of Computing in Civil Engineering, 30(3), 04015032. (Impact Factor: 1.798)

@ DR. LING MA

• Coplanar faces are merged in the segments of the scan
• One face may be broken into smaller pieces in the scan

Many-to-many relationship

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Damage invariant feature

Unreinforced masonry wall structure

As-built to as-damaged

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Zeibak-Shini, R.*, Sacks, R., Ma, L., and Filin, S. (2016). “Towards generation of as-damaged BIM models using laser-scanning and as-built BIM: First estimate of as-damaged locations of reinforced concrete frame members in masonry infill structures.” Advanced Engineering Informatics, 30(3), 312–326. (Impact Factor: 3.712)

Result

Ground truth

Comparison

As-built to as-damaged

@ DR. LING MA

Zeibak-shini, R., Ma, L., and Sacks, R. (2015). “Mapping the Structural Frame of a Damaged Reinforced Concrete Building using As-Damaged Scans and As-Built BIM.” Proc. of the 32nd CIB W78 Conference 2015, 27th-29th October 2015, Eindhoven, The Netherlands, 790–799.

Information modeling of damaged RC components

@ DR. LING MA

Ma, L.*, Sacks, R., and Zeibak-Shini, R. (2015). “Information modeling of earthquake-damaged reinforced concrete structures.” Advanced Engineering Informatics, 29(3), 396–407. (Impact Factor: 3.712)

AWARDS

@ DR. LING MA