Prediction of Earthquake Vulnerability for Low-Rise RC Buildings Using Probabilistic Random Forest
Subject Areas : Artificial Intelligence in Structural Engineering
Mohammad Khodaparasti
1
,
Ali Alijamaat
2
,
majid pouraminian
3
1 - Department of Computer Engineering,Rasht Branch,Islamic Azad University,Rasht, Iran
2 - Department of Computer Engineering, Rasht Branch, Islamic Azad University, Rasht, Iran
3 - Department of Civil Engineering, Islamic Azad University, Ramsar branch
Keywords: seismic vulnerability, rapid visual screening, machine learning (ML), random forest (RF), simple Bayesian, reinforced concrete buildings.,
Abstract :
Assessing the seismic vulnerability of existing buildings is one of the major concerns of governments in the world. Reducing the destructive and catastrophic consequences of earthquakes is necessary and inevitable. So far, various techniques have been presented to evaluate the seismic vulnerability of buildings. One of the fast and effective assessment techniques is the Rapid Visual Screening (RVS) technique with fastly identify high-risk buildings for a more accurate assessment. Among the RVS methods, the Hassan-Sozen PI method is the simplest method to evaluate the seismic vulnerability of low-rise RC buildings. The value of the priority index (PI) is determined from the simple geometric features of the building such as the number of stories, floors area, column area, area of concrete walls and infilled in the main directions of the building. In this article, the data collection have been gathered from Elyasi et al.'s reference such as geometrical information (with geometrical features provided by Hassan-Sozen) and earthquake features (peak ground acceleration and earthquake magnitude) for 658 low-rise RC buildings. The number of considered input features includes seven geometric features and two earthquake features (9 features in total) and the predicted output of Hassan-Sozen priority index. The machine learning technique utilized in this article for prediction seismic vulnerability is a probabilities random forest in which a simple Bayesian method is used to create forest trees. This method has had a slight improvement in accuracy criteria and considerable improvement in accuracy and recall criteria compared to other traditional random forest and ML methods.
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