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damage-state-prediction
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Seismic Damage Prediction for Non-Structural Building Systems: a Framework Based on Building Information Modeling and Machine Learning
, M.Sc. Thesis Sharif University of Technology ; Alvanchi, Amin (Supervisor)
Abstract
Despite the vulnerability of non-structural systems in buildings to disasters, their resilient design has received minimal attention from the practitioners of the construction industry. However, interruption in the performance of these systems jeopardizes the functionality of the buildings and threatens the resilience of the whole community. To address this issue, the present study proposes a novel framework for predicting possible damage states of non-structural building systems under disasters. The proposed framework benefits from an automated combination of Building Information Modeling (BIM) as a visualized 3D database of the building's components and the Machine Learning (ML)...
Vibration-based Structural Damage State Identification by Image-based Two-dimentional Convolutional Neural Network
, M.Sc. Thesis Sharif University of Technology ; Mohtasham Dolatshahi, Keyarash (Supervisor)
Abstract
This paper proposes a novel image-based two-dimensional convolutional neural network for identifying damage level of the structures after an earthquake. The acceleration of the structure is the input data that is converted into an image, and the corresponding damage level is the output of the network. The superiority of the proposed method in comparison to the signal-based one-dimensional convolutional neural network method is the incorporation of the high and low frequency of the input data into the kernel of the convolution. Rows of the input image show short period high frequency of the signal and the column represent long duration and low frequency of the response time history...
Evaluating the Effects of Aftershocks on Increasing the Structural Damages in Special Steel Moment Frame Building
, M.Sc. Thesis Sharif University of Technology ; Rahimzadeh Rofooei, Fayyaz (Supervisor) ; Ghods, Babak (Co-Supervisor)
Abstract
The purpose of this study is to investigate the effect of consecutive earthquakes by considering different levels of structural damage intensity index. The cumulative damage of structures caused by the sequence of main earthquake and aftershock is a combination of the initial damage caused by the main earthquake and the increased damage caused by the aftershock. The evaluation process of the main earthquake and aftershock is divided into two parts: evaluation of the fragility of the main earthquake and evaluation of the fragility due to the aftershock. This investigation was carried out using a 4-story steel building with special moment resisting frame. The results for the case of only the...