Welcome to the OpenQuake Vulnerability Modellers Toolkit’s documentation!
The OpenQuake Vulnerability Modellers Toolkit (oq-vmtk) is an open source
library that provides an OpenSeesPy-based environment for modelling idealised
building class models such as single (SDOF) and multi-degree-of-freedom
(MDOF) systems and to carry out analysis via linear, nonlinear static, and nonlinear
dynamic approaches for regional vulnerability and risk assessment applications.
The vulnerability toolkit is developed by the Risk Team at the Global Earthquake
Model (GEM) Foundation. Contributions from external users are very welcome!
The oq-vmtk code is hosted on GitHub at the following link:
https://github.com/GEMScienceTools/oq-vmtk.
Currently, the oq-vmtk includes eight sub-modules:
Intensity Measure Calculator (im_calculator): Contains code used for processing spectra and intensity measure types from ground-motion records.
Model Calibration (calibration): Contains code used for calibrating MDOF models based on SDOF low-level parameters.
Model Building (modeller): Contains code used to compile SDOF and MDOF models in OpenSeesPy and run distinct analyses such as linear (i.e., modal analysis), nonlinear static (e.g., static and cyclic pushovers), and nonlinear time-history analyses.
Fragility and Vulnerability Analysis (postprocessor): Contains code for postprocessing cloud and multiple stripe analyses to derive fragility and vulnerability models.
Storey Loss Function Generator (slf_generator): Contains code for generating storey loss functions for a more refined loss assessment of building components.
Model Plotting (plotter): Contains code for visualizing and graphically interpreting
oq-vmtkoutputs.Units and Utilities: Contains miscellaneous code used for assigning units of measurements to OpenSeesPy models and to carry out other file management and variable handling tasks, respectively.
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