FLIQ-Foundation and Ground Performance in Liquefaction Experiments

The effects of seismically induced liquefaction on building foundations have been intensely studied through case histories, numerical simulations, and many experiments (e.g., Whitman and Lambe 1988, Liu and Dobry 1997, Bouckovalas et al. 1991, Hausler 2002). In recent years a number of sophisticated centrifuge experiments with model buildings with various foundations overlying a layer of loose liquefiable sand have been performed to investigate key aspects of liquefaction that affect building performance. For each test series, soil profiles, structure properties and ground motions are varied to study specific liquefaction and soil-structure interaction phenomena. It is often difficult to compare results from different research programs because each researcher develops their own notation and sign conventions, and each research program focuses attention on different aspects of their experiments. A considerable effort was made to go through data reports from several experimental programs and tabulate consistently defined variables that enable future researchers to compare initial conditions, ground motion sequences and performance parameters from experiments performed by different researchers. This dataset includes 9 large-scale centrifuge tests, with 49 stations (e.g., a building of or a free-field site), and over 60 shaking events, totaling 405 event-model case histories. The dataset allows users to access information from many centrifuge tests. Analyzing these and future tests as a whole instead of looking inward at individual experiments gives a broader understanding of liquefaction principles and will aid in building on geotechnical earthquake engineering understanding of liquefaction. This dataset was previously published by DEEDS at datacenterhub.org, but when the authors were notified that the dataset hosting service would go out of service, the data was reformatted in 2023 for archiving at NHERI in the Data Depot of DesignSafe-CI. Prior to being published by DEEDS, the dataset was archived in the Project Warehouse by NEES (Network for Earthquake Engineering Simulation). In the process of moving from NEES to DEEDS and finally to NHERI DesignSafe, the archived data has not been changed; however, it was necessary to reorganize and reformat the files and directory structures. The user of the data is encouraged to start exploring this dataset by studying the README file in the Folder "1 MAIN SPREADSHEET AND DOCUMENTATION".