Zhilin Bai’s research while affiliated with Harbin Institute of Technology and other places

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Publications (4)


Multi-scale image-based damage recognition and assessment for reinforced concrete structures in post-earthquake emergency response
  • Article

September 2024

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38 Reads

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4 Citations

Engineering Structures

Zhilin Bai

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Multicategory damage detection and safety assessment of post‐earthquake reinforced concrete structures using deep learning

January 2022

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281 Reads

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69 Citations

Earthquake damage investigation is critical to post-earthquake structural recovery and reconstruction. In this study, a method of assessing the component failure mode and damage level was established based on object detection and recognition. A quantitative structural damage level assessment method was developed based on the type and extent of damage to the components. A You Only Look Once v4 (YOLOv4) network was used to detect multicategory damage (fine crack, wide crack, concrete spalling, exposed rebar and buckled rebar). Depthwise separable convolution was introduced into YOLOv4 to decrease the computation cost without reducing accuracy. Finally, the damage detection method and assessment method were integrated within a graphical user interface (GUI) to facilitate the post-earthquake reinforced concrete (RC) structural damage assessment. The test results by GUI indicate that the improved object network can get accurate detection results, and the preliminary safety assessment method can judge the damage level and failure mode. The present study shows high potential for estimating the seismic damage states of RC structures.

Citations (4)


... The use of CNNs is, very likely, the most widely adopted strategy for assessing building damage in post-earthquake scenarios, with numerous recent studies published on the topic [29][30][31][32][33][34][35][36][37][38][39][40][41][42][43]. Various network architectures based on AlexNet [31], previously recognized as a significant milestone in computer vision, were developed, alongside many other CNN architectures [30]. ...

Reference:

Effectiveness of Generative AI for Post-Earthquake Damage Assessment
Multi-scale image-based damage recognition and assessment for reinforced concrete structures in post-earthquake emergency response
  • Citing Article
  • September 2024

Engineering Structures

... Under suitable temperature, humidity and CO2 concentration conditions, the hydration products inside aerated concrete undergo a chemical reaction with the CO2 that penetrates into the material, generating stable calcium carbonate (CaCO₃). This carbonization process not only leads to changes in the microstructure and phase composition of the material, but also has a profound impact on physical properties such as compressive strength, dry density, shrinkage and thermal conductivity [8][9][10][11] In addition, the hydration products formed inside aerated concrete have a high carbonization activity, accelerating the curing of CO2 and further highlighting its potential in carbon sequestration [12]. ...

Effects of carbonation on the compressive strength of autoclaved aerated concrete with different Ca/Si ratios
  • Citing Article
  • September 2023

Journal of Sustainable Cement-Based Materials

... They pre-process the data and train a deep-learning model using CNNs to classify damaged and undamaged crops (Vimal et al. 2023). To assess the model's effectiveness and accuracy in identifying crop damage, field surveys will yield ground truth data (Bai et al. 2023) in agricultural and disaster management fields. The field of agriculture and disaster management. ...

Image-based reinforced concrete component mechanical damage recognition and structural safety rapid assessment using deep learning with frequency information
  • Citing Article
  • June 2023

Automation in Construction

... The model can provide certain auxiliary decision support for the assessment of target destruction effect and battlefield damage assessment for both offense and defense in exercise drills, and has certain inspiration and reference significance for the development of artificial intelligence for target destruction effect assessment. Zou et al. [45] established a damage degree assessment method based on target detection and identification of component failure modes. A quantitative structural damage level assessment method was developed based on the damage type and degree of the component. ...

Multicategory damage detection and safety assessment of post‐earthquake reinforced concrete structures using deep learning
  • Citing Article
  • January 2022