Rapid assessment of earthquake damaged building using laser scanning and Building Information Modeling

Dr. Ling Ma

Technion - Faculty of Civil and Environmental Engineering

© 2015, Dr. Ling Ma 

Earthquake

Search & Rescue

Damage assessment

© 2015, Dr. Ling Ma 

Planning of Post-earthquake operations

- Pre-event information

- Seismic response

- Outer appearance

As-built BIM model

Seismic Simulation

Remote Sensing

© 2015, Dr. Ling Ma 

© 2015, Dr. Ling Ma 

Four-story Reinforced Concrete and Post-Tensioned Concrete Buildings, December 2010 (from  E-defense)

© 2015, Dr. Ling Ma 

Synthetic specimen?

Ma, L., R. Sacks, and R. Zeibak-Shini, Information modeling of earthquake-damaged reinforced concrete structures. Advanced Engineering Informatics, 2015. 29(3): p. 396-407.

© 2015, Dr. Ling Ma 

By Jiashu Liang

By Ashrant Aryal

By Ashrant Aryal

© 2015, Dr. Ling Ma 

Ma, L., R. Sacks, R. Zeibak-Shini, et al., Preparation of Synthetic As-Damaged Models for Post-Earthquake BIM Reconstruction Research. Journal of Computing in Civil Engineering, 2016. 30(3): p. 04015032.

Scanner emulator?

Ma, L., R. Sacks, R. Zeibak-Shini, et al., A Computational Procedure for Generating Specimens of BIM and Point Cloud Data for Building Change Detection, in Computing in Civil Engineering 2015. 2015, American Society of Civil Engineers. p. 684-691.

© 2015, Dr. Ling Ma 

Experiment setup

Ma, L., R. Sacks, and R. Zeibak-Shini, Information modeling of earthquake-damaged reinforced concrete structures. Advanced Engineering Informatics, 2015. 29(3): p. 396-407.

© 2015, Dr. Ling Ma 

Challenges in Model Matching​​

  • Textureless/featureless building facades
  • M:N corresponding relationship
  • Lack of polygon-based shape descriptor

Damage invariant

structural feature

© 2015, Dr. Ling Ma 

Structure morphing

  • Mapping structural cells
  • Locating the building elements in the scan
  • Compilation of as-damaged BIM model

Zeibak-Shini, R., R. Sacks, L. Ma, et al., 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, 2016. 30(3): p. 312-326.

© 2015, Dr. Ling Ma 

Validation

User prepared: Actual Positive (TP+FN)

Case Precision (TP/PP) Recall (TP/AP)
Kocaeli 81.98% 80.77%
Bingol 76.57% 78.35%

System generated: Predictive Positive (TP+FP)

Intersection: TP

© 2015, Dr. Ling Ma 

© 2015, Dr. Ling Ma 

© 2015, Dr. Ling Ma 

© 2015, Dr. Ling Ma 

Copy of Earthquake Scan to BIM

By Ling Ma (Lorin)

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Copy of Earthquake Scan to BIM

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