An innovative structural health assessment tool for existing precast concrete buildings using deep learning methods and thermal infrared satellite imagery

Kargin M. Lukpanov R. Serenkov A. Shaymagambetov Y. Kargin J. Garcia R. Laory I.
March 2023 Springer Science and Business Media Deutschland GmbH

Journal of Civil Structural Health Monitoring
2023 #13 Issue 2-3 561 - 578 pp.

Currently, there is a limited number of tools that can be used to assess progressive damage of buildings in large-scale study areas. The effectiveness of such tools is also constrained by a lack of sufficient and reliable data from the buildings and the area itself. This research article presents an innovative framework for damage detection and classification of precast concrete (PC) buildings based on satellite infrared (IR) imagery. The framework uses heat leakage changes over time to assess the progressive damage of buildings. Multispectral satellite images are used for a spatial scanning and large-scale assessment of a study area. A deep learning object detection algorithm coupled with two pixel intensities classification approaches are utilized in the framework. The proposed framework is demonstrated on two case study areas (parts of Karaganda and Almaty cities) in Kazakhstan using a set of multitemporal satellite images. Overall, the proposed framework, in combination with a YOLOv3 algorithm, successfully detects 85% of the PC buildings in the study areas. The use of a peak heat leakage classification approach (in comparison to mean heat leakage classification) over the 4 years showed a good agreement with the proposed framework. On-site visual inspections confirmed that PC buildings that were classified as having “High damage probability” have indeed evident signs of deterioration, as well as a more heat leakage than the rest of the buildings in the study areas. Whilst the framework has some limitations such as its applicability to extreme continental climate and its low sensitivity to detect minor damage, the proposed innovative framework showed very promising results at detecting progressive damage in PC buildings. This article contributes towards developing more efficient long-term damage assessment tools for existing buildings in large urban areas.

Damage detection , Precast concrete , Structural assessment , Thermal infrared imagery

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Civil Engineering Stream, School of Engineering, University of Warwick, Coventry, CV4 7AL, United Kingdom
Technical Physics Department, Eurasian National University, Nur-Sultan, 010000, Kazakhstan
Anymatic Systems LLP, Nur-Sultan, 010000, Kazakhstan
Kazakhstan Gharysh Sapary JSC, Nur-Sultan, 010000, Kazakhstan

Civil Engineering Stream
Technical Physics Department
Anymatic Systems LLP
Kazakhstan Gharysh Sapary JSC

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