Meta databases of steel frame buildings for surrogate modelling and machine learning-based feature importance analysis
Delbaz Samadian , Imrose B. Muhit , Annalisa Occhipinti , Nashwan Dawood
Resilient Cities and Structures ›› 2024, Vol. 3 ›› Issue (1) : 20 -43.
Traditionally, nonlinear time history analysis (NLTHA) is used to assess the performance of structures under fu-ture hazards which is necessary to develop effective disaster risk management strategies. However, this method is computationally intensive and not suitable for analyzing a large number of structures on a city-wide scale. Surrogate models offer an efficient and reliable alternative and facilitate evaluating the performance of multiple structures under different hazard scenarios. However, creating a comprehensive database for surrogate mod-elling at the city level presents challenges. To overcome this, the present study proposes meta databases and a general framework for surrogate modelling of steel structures. The dataset includes 30,000 steel moment-resisting frame buildings, representing low-rise, mid-rise and high-rise buildings, with criteria for connections, beams, and columns. Pushover analysis is performed and structural parameters are extracted, and finally, incorporating two different machine learning algorithms, random forest and Shapley additive explanations, sensitivity and explain-ability analyses of the structural parameters are performed to identify the most significant factors in designing steel moment resisting frames. The framework and databases can be used as a validated source of surrogate modelling of steel frame structures in order for disaster risk management.
Surrogate models / Meta database / Pushover analysis / Steel moment resisting frames Sensitivity and explainability analyses Machine learning
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