This page is the online repository for the following journal article: Kitayama, S., Moncayo, EAM., Athanasiou, A. (2023). "Inspection and repair considerations for downtime assessment of seismically isolated buildings." Soil Dynamics and Earthquake Engineering. https://doi.org/10.1016/j.soildyn.2022.107618
This repository contains downtime assessment files programmed in MATLAB (version 9.10.0.1649659 (R2021a) Update 1; The MathWorks, Inc).
Prepared by:
Shoma Kitayama, Ph.D. (s.kitayama@leeds.ac.uk) - University of Leeds
Checked by:
Enrique Abel Morales Moncayo, Ph.D. (eamorales5@espe.edu.ec) - Universidad de las Fuerzas Armadas (ESPE)
Anastasia Athanasiou, Ph.D. (anaj.athanasiou@gmail.com) - Concordia University
27.Mar.2022, Version: 2 (Last modified)
04.Oct.2021, Version: 1
The main file "calc_SeismicDowntimeEstimation.m" performs the downtime assessment of seismically isolated building with SCBF designed by RI=2 and TFP-1 (notations are explained in the manuscript). It produces the following output:
- Downtime vulnerability curves
- Mean mobilization times
- Expected annual downtime (EADT)
- Expected annual downtime losses (EADTL)
- Probabilities for different colors of tags
To implement this example code, you need to download the data of results of nonlinear seismic response analysis from the following link:
https://drive.google.com/file/d/1pNAoIicndCVjONx4P9fMqTAlJawJbsfy/view?usp=sharing
The downloaded data (i.e., a folder, after extraction of zip file, "Response_analysis_data_CS_SCBF_RI2.0_Iso1_ASCE16") of results of seismic respone analysis should be located to the folder in the same place as the matlab files are located.
The zip file should be extracted to get a folder that contains data. The data is the results of analysis of seimically isolated building with SCBF (superstructure is designed per RI=2.0) and with the smallest required isolators (TFP-1) based on ASCE7-16 (2017) seismic design standard.
Please note that the MATLAB file "fn_mle_pc.m" in this folder is from the online data repository associated with: Baker JW. (2015). “Efficient analytical fragility function fitting using dynamic structural analysis.” Earthquake Spectra, 31(1), 579-599.