cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17603/ds2-tgdv-1d39
title: Computing Spectrum Intensity for traditionally damped SDF system with Fractional Response (SIrα)
title: in Fractional Order Intensity Measure for High-Confidence Probabilistic Seismic Demand Modeling of Structures

description: Main File for computing Spectrum Intensity for traditionally damped SDF system with fractional response (SIrα)
description: In performance-based earthquake engineering, probabilistic seismic demand models of structures are essential components that provide probabilistic estimates of earthquake-induced demands as a function of a variable(s) called the ground motion intensity measure (IM). Uncertainties in these models are often dependent on the IM used. In other words, an appropriate IM for response prediction play a pivotal role toward reliable probabilistic seismic demand modeling of structures and subsequently, risk and resilience quantification. To this end, a series of novel fractional order (FO) IMs are proposed to release the constraints of traditional integer order IMs such as peak ground acceleration (PGA), velocity (PGV), and displacement (PGD), etc., to yield improved demand models. The developed FO IMs include peak ground response (PGRα), cumulative absolute response (CARα) and its modified version (CAR5α), spectral acceleration at a period of interest for a fractionally damped single degree of freedom (SDF) system (Sad-Tnα) and for a conventional SDF system with fractional response (Sar-Tnα), spectrum intensity for a fractionally damped SDF system (SIdα), as well as for a conventional SDF system with fractional response (SIrα). Superiorities of the developed FO IMs to the traditional IMs are successfully demonstrated using a coupled soil-bridge models considering liquefaction and laterally spreading effects. This demonstration motivates further investigation of these FO IMs for different types of structures or infrastructure systems where introduction of fractional order intensity measures may similarly help to improve performance predictions. Accordingly, seismic risk estimates founded upon the use of these novel IMs have the potential to enhance the confidence and accuracy in future studies.
DOI: 10.17603/ds2-y934-rw55
title: Continuum-element modeling of 1-D interlocking TeSA wall
title: in Simulation Models and Fragility Functions for Tessellated Structural-Architectural Reinforced Concrete Walls

description: This project introduced a new modular reinforced concrete shear wall system designed for replaceability and resilience after extreme loading as well as architectural appeal. The walls are called tessellated structural-architectural (TeSA) walls because they consist of interlocking tiles (modules) with repetitive shapes (tessellations) and are intended to satisfy both structural and architectural demands. Tiles of TeSA systems can be interlocking in one or two directions, and can incorporate self-centering post-tensioning. This data set includes: 
(1) Continuum element models of 1-D and 2-D interlocking reinforced concrete TeSA walls. The models were created using a commercial finite element software (Abaqus). Walls with 1-D interlocking tiles had self-centering strands. Load-displacement and strand force-displacement (when applicable) data are presented for static pushover analyses. Wall design details are provided for the walls analyzed. 
(2) Fiber element model of a 1-D interlocking TeSA wall with self-centering strands. The model was created using OpenSees. Load-displacement and strand force-displacement data are presented for static pushover analyses. Wall design details are also provided. 
(3) Fragility functions for two 1-D interlocking TeSA walls with varying tile patterns. The functions were created using the fiber element models described above, captured uncertainties in applied axial loading, tile-interface properties, concrete compressive strength, modeling approach, and used lateral drift as the demand parameter. Design details of the walls, for which fragility functions were generated, are also provided.
description: 1-D interlocking Tessellated Structural-Architectural (TeSA) shear wall was modeled. Each tile is modeled using continuum elements. Interaction between tiles is captured using surface-to-surface contact algorithms.The model was created in Abaqus. The tiles of TeSA wall were made of reinforced concrete and the wall was subjected to static and monotonically increasing lateral loading on top. The data set includes input files, example output files, and the details of the TeSA walls for which the models were created.
DOI: 10.17603/ds2-zr29-5253
title: JPM-OS Compound Flooding

description: Codes for Joint Probability Method with Optimal Sampling (JPM-OS) applied to compound flooding in Cape Fear River, NC
DOI: 10.17603/ds2vh72
title: NCU1, NCU2, NCU3 - National Central University Experiments, in PRJ-1843: LEAP-UCD-2017
title: in LEAP-UCD-2017 Experiments (Liquefaction Experiments and Analysis Projects)

description: Twenty-four centrifuge model tests of liquefaction and lateral spreading, performed as part of a round robin test program, are shared and compared in this archive. Please see the general report section of the published project for an overview comparison and background of all of the experiments. One document in the report (with “ReadMe” in the file name) describes the organization of the data archive. The comparisons presented in the general report section will serve as an index to help the users find individual experiments of interest.  This data from 24 model tests is published as nine separate experiments in this archive (one experiment per centrifuge facility). Each "experiment" includes two or three model tests and each model test includes between one and three destructive shaking events.
All of the tests modeled a 4 m thick deposit of Ottawa F-65 sand with a 5-degree surface slope in a rigid box. The tests covered a range of ground motion intensities and a range of relative densities to define the median response and the sensitivity of the response to relative density and shaking intensity. The nine centrifuge facilities involved in this test program included Cambridge University (UK), Ehime University (Japan), IFSTTAR (France), NCU (Taiwan), KAIST (Korea), Kyoto University (Japan), RPI (USA), UC Davis (USA), and Zhejiang University (China).
description: Lateral spreading of a submerged slope for LEAP-UCD-2017
DOI: 10.17603/ds2-96vv-dj94
title: Simulating targets of transient winds in straight-line wind simulators
title: in National Full-Scale Testing Infrastructure for Community Hardening in Extreme Wind, Surge, and Wave Events (NICHE): UF PDT Non-Synoptic Testing

description: Two sets of vertical and horizontal louvers were introduced in the University of Florida Boundary Layer Wind Tunnel. These louvers have the capability to rotate and reach different angular openings at different angular speeds and angular accelerations. Some experiments were designed using the horizontal louvers only and some were designed using vertical louvers only. The goal is to reach certain targets of transient wind systems such as radial and vertical velocity profile, acceleration, and so on using vertical and horizontal louvers.
description: This project is part of a larger effort to design a large-scale facility capable of simulating extreme wind and water events. These experiments, conducted at the University of Florida Boundary Layer Wind Tunnel, consist of two separate efforts: 1) Simulation of vertical vortices and 2) Matching of target parameters from non-synoptic events such as thunderstorms and tornadoes.
DOI: 10.17603/ds2-f21x-s189
title: An Updated Strong-Motion Database of Türkiye (SMD-TR)

description: We updated the earthquake strong-motion database of Türkiye (SMD-TR) that is initially compiled by Akkar et al. (2010). The updated dataset is composed of 9,244 earthquakes of magnitudes 3.0 ≤ M ≤ 7.8 that occurred between 1976 and 2023. It includes 95,890 three-component waveforms recorded at 1,022 stations. The database is disseminated under our research-oriented web site DesignSafe and is compiled to provide ground-motion flatfile, which will be updated periodically until 2025. The released version includes events until February 28th, 2023, and hence the main-shocks and a great portion of after-shocks from the February 6th, 2023, Kahramanmaraş earthquakes are covered.  

The database includes event metadata compiled from national and international seismological agencies as well as literature. We classified events according to their tectonic environments (i.e., crustal and subduction) and identified fore- and after-shocks. The station information provided by AFAD was used to compute the main site parameters, including time-based average of shear-wave velocity of uppermost 30 m and depth-to-rock where the shear wave-velocity attains 1 km/s. We also computed the finite-fault distance metrics and flagged hanging wall and pulse-like records. We developed an automatic processing algorithm to determine the waveform quality, apply appropriate filters to remove low- and high-frequency noise, and compute ground motion parameters. The automatic processing was applied to small magnitude (M<5.5) events whereas manual processing scheme is preferred for the waveforms recorded from larger events. The peak ground motion values, spectral ordinates, and ground-motion duration are provided along with the key data processing parameters in the flatfile.
DOI: 10.17603/ds2-fqy5-n314
title: CRASAR-U-DROIDs

description: This dataset contains 52 orthomosaics containing 21716 building polygons collected from 10 different disasters, totaling 67 gigapixels of imagery. Building polygons were sourced from Microsoft's US Building Footprint's Dataset, and in some cases building polygons were added manually by the authors. Each building polygon has been annotated using the Joint Damage Scale  and translationally aligned for model training. The dataset has been split into test and train at the disaster level with 6 disasters in the train set, and 4 disasters in the test set. A summary of the dataset, grouped by disaster and ordered by area, is included below for reference.
DOI: 10.17603/ds2-kp1n-hs96
title: Retrofit of Existing Foundation to Anchor External Post-tensioning using Ultra-High Performance Concrete
title: in Seismic Retrofit of Deficient RC Shear Walls using Selective Weakening and Self-Centering-(Foundation Retrofit)

description: The proposed retrofit scheme for anchorage of external post-tensioning was  investigated. The specimens were subjected to post-tensioning load by applying tension force to PT bars anchored in the UHPC block. The test observations and measured results  showed low damage and satisfactory transfer of anchorage force to the embedded reinforcements. The data can be reused to validate numerical model to aid in design of a full-scale retrofitted wall.
description: As part of project funded by National Science Foundation (NSF), we investigated a retrofit solution for non-ductile RC shear walls, which involves converting traditional cast-in-place shear walls into rocking walls through selective weakening and self-centering. Laboratory tests were performed to validate the retrofit concept on a benchmark wall specimen designed to pre 1970s standards. Observations from the test showed minimized damage and excellent re-centering in the retrofitted wall. Additional testing was carried out to verify a novel anchorage scheme for post-tensioning elements, required to implement the proposed retrofit. Ultra-High-Performance Concrete (UHPC) was judiciously used to minimize damage and optimize the retrofit process.
DOI: 10.17603/ds2-qg58-sv30
title: Replication Data: 3D Geometry Characterization of New England Mineral Particles

description: 3D scanned data
DOI: 10.17603/ds2-y9wd-8j58
title: Mid-height isolated tall, slender vessel
title: in Mid-height seismic isolation of tall, slender equipment

description: First-of-a-kind earthquake-simulator experiments were conducted at the University at Buffalo to examine mid-height seismic isolation as a design solution for protecting tall, slender equipment. The test specimen was a 240-inch-tall vessel with an outer diameter of 60 inches, which could represent a reactor vessel, a steam generator, or a heat exchanger in an advanced nuclear power plant. The vessel was supported at its mid-height on a steel support frame. It was tested in non-isolated and isolated configurations for a range of earthquake motions. Spherical sliding bearings were used to isolate the vessel. The generated data, which included accelerations at different locations on the vessel and its internals, axial strains in internals, pressure at different elevations on the vessel wall, and isolation-system displacements and forces, can be used by analysts to validate numerical models in commercial finite element programs. Although the focus herein was on safety-class equipment in advanced nuclear power plants, the results are applicable to tall, slender equipment regardless of industry sector.
description: A set of earthquake-simulator experiments were conducted to investigate the utility of mid-height seismic isolation of tall, slender equipment. The test specimen was a 240-inch-tall vessel with an outer diameter of 60 inches and a wall thickness of 1 inch. The vessel was supported on a stiff steel frame at its mid-height, near its center of gravity. Two sample internals were attached to the vessel head. The vessel was tested in three configurations: 1) non-isolated, 2) isolated using single Friction Pendulum (SFP) bearings, and 3) isolated using Triple Friction Pendulum (TFP) bearings. The vessel was subjected to three component ground motions, selected from the PEER NGA-West 2 database, using a 6 degrees-of-freedom earthquake simulator at the University at Buffalo. Test results demonstrated that mid-height seismic isolation generally enables a very significant reduction in horizontal spectral accelerations in the vessel and its internals with respect to those in the non-isolated configuration. The experiment data will help engineers to validate numerical models for analysis and design of isolated safety-class equipment in nuclear power plants.
DOI: 10.17603/ds2-2aqj-z033
title: GEER Anchorage Alaska Earthquake

description: GEER formed a reconnaissance team to investigate the effects of the the Anchorage, Alaska M7.0 30 November 2018 earthquake. Data in this project includes LiDAR and UAV photogrammetry point clouds (LAS and Potree files) along with photos from the team's field survey.
DOI: 10.17603/ds2-3nvj-4127
title: Relational database for post-earthquake damage and recovery assessment: 2014 South Napa earthquake

description: The Earthquake Recovery relational database uploaded to DesignSafe contains damage and recovery information for buildings affected by the 2014 South Napa earthquake. This project contains a Jupyter notebook (RecoveryDatabaseExampleQueries.ipynb) that runs several basic queries on the Earthquake Recovery relational database. The Jupyter notebook establishes a connection to the database and illustrates how to query information about the buildings affected by the 2014 South Napa earthquake including various properties (e.g. geometry, structural and occupancy), the type and level of damage, the recovery and census-level sociodemographic.

Edit: Please use file "RecoveryDatabaseExampleQueries-NewConnection.ipynb" instead to account for the new Jupyter image (updated March 2022) and be sure to restart the kernel to avoid errors on the first cell.


The MySQL file (EarthquakeRecovery.sql) containing the database is attached to this project. The relational database schema (Earthquakerecoveryschema.png) and a spreadsheet showing the number of entries for each attribute (EarthquakeRecoveryAttributeEntries.xslx) are also included.
DOI: 10.17603/ds2-3xdj-1r25
title: Positionality for Ethical Research Engagement with Socially Vulnerable Groups—CONVERGE Extreme Events Research Check Sheets Series

description: This check sheet provides a definition of positionality, tips for how to understand it, and examples of relevant case studies. Although this is primarily for researchers preparing to do fieldwork with socially vulnerable groups, practitioners who work with these groups can also find this check sheet useful. About the CONVERGE Extreme Events Research Check Sheets Series: The National Science Foundation-supported CONVERGE facility at the Natural Hazards Center at the University of Colorado Boulder has developed a series of brief check sheets that are meant to be used as researchers design their studies, prepare to enter the field, conduct field research, and exit the field. The series offers best practices for extreme events research and includes check sheets that are free to the research community. More information is available at: https://converge.colorado.edu/resources/check-sheets.
DOI: 10.17603/ds2-ab8v-z026
title: Interpolating Ground Motion Intensity at Sites in the Next Generation Liquefaction Database

description: This project creates an algorithm for estimating ground motion intensity at liquefaction sites caused by earthquakes. The data and methods used in this project can be applied to any liquefaction site around the world to predict ground motion intensity. This project takes into account both observed and estimated data, and makes a statistically quantified approximation of peak ground acceleration. This research will benefit model development efforts where ground shaking intensity is a key component.
DOI: 10.17603/ds2-b36k-tf53
title: Reconnaissance of Wind Damage to Buildings in Downtown Houston, Texas
title: in Reconnaissance of Wind Damage to Buildings in Downtown Houston, Texas

description: This project presents field data collected related to the damage of tall and mid-rise buildings in Downtown Houston, Texas, during the severe storms on Thursday, May 16, 2024. Specifically, images and descriptions of the damage sustained by the structures are shared for the purpose of documenting perishable data primarily related to damage patterns to windows and glass exteriors. The images are organized by building, with key information provided for each building, including name, description, and location. A total of 14 buildings were documented, with a majority showing moderate to severe wind-induced damage to their windows and glass exteriors. The field survey suggests the effects of channeling in downtown corridors, corner effects, under-capacity windows, and damage from cascading debris. These images could be valuable to the engineering community for various purposes, given the unique conditions of this event and the variability of damage across buildings in close proximity to each other. For example, the data could be used to map damage patterns of the surveyed buildings, verify or validate models related to performance-based wind engineering and the behavior of tall buildings and their glass exteriors.
description: This project presents field data collected related to the damage of tall and mid-rise buildings in Downtown Houston, Texas, during the severe storms on Thursday, May 16, 2024. Specifically, images and descriptions of the damage sustained by the structures are shared for the purpose of documenting perishable data primarily related to damage patterns to windows and glass exteriors. The images are organized by building, with key information provided for each building, including name, description, and location. A total of 14 buildings were documented, with a majority showing moderate to severe wind-induced damage to their windows and glass exteriors. The field survey suggests the effects of channeling in downtown corridors, corner effects, under-capacity windows, and damage from cascading debris. These images could be valuable to the engineering community for various purposes, given the unique conditions of this event and the variability of damage across buildings in close proximity to each other. For example, the data could be used to map damage patterns of the surveyed buildings, verify or validate models related to performance-based wind engineering and the behavior of tall buildings and their glass exteriors.

A Hazmapper Map is available at: https://hazmapper.tacc.utexas.edu/hazmapper/project-public/04205a98-b2f0-43bb-8e66-a36c508efebd
DOI: 10.17603/ds2-jdhc-v331
title: ADCIRC/SWAN Hindcasts of Hurricane Idalia on global and regional meshes.
title: in Hurricane Idalia 2023: CERA / ADCIRC Storm Surge Hindcasts

description: Hurricane Idalia was a Category 4 hurricane that caused significant damage,
especially in Northern Florida. Idalia was the tenth named storm and third hurricane of the
2023 Atlantic hurricane season. This project provides 2 ADCIRC hindcast simulations for hurricane
Idalia. The model output files are in the NetCDF file format and include water level heights,
wind, and significant wave height information. The project utilized the ADCIRC Surge
Guidance System framework and wind data from the National Hurricane Center to generate
model output from ADCIRC and SWAN. The model runs were performed on two different
model meshes: a) a mesh that covers the Gulf and Atlantic U.S. basins (HSOFS) and b) a
high-resolution regional mesh tailored for Western Florida (EGOMv20b). GIS, and track data
are available at the Coastal Emergency Risk Assessment website at
https://cera.coastalrisk.live.
description: HIndcasts of Hurricane Idalia were performed with the coupled ADCIRC-SWAN model and wind forcing from the Generalized Assymetric Holland Model on the large-scale HSOFS mesh and the regional EGOMV20b mesh.
DOI: 10.17603/ds2-n3pm-rc46
title: DesignSafe Annual Evaluation Report 2021-2022

description: This report summarizes the 2021-22 evaluation of the DesignSafe cyberinfrastructure, which was conducted by TACC’s Expanding Pathways in Computing (EPIC) STEM Evaluation Services. EPIC used a mixed methods approach to assess the implementation, outcomes, and impacts of DesignSafe on the natural hazards community. The evaluation aims to inform project improvements and report on outcomes over the project’s duration. Multiple data sources were used, including platform analytics, user profiles, annual and microsurvey responses, trainee surveys, and user and stakeholder interviews.

The evaluation report's key findings indicate that nearly all annual survey respondents were satisfied with DesignSafe and found it valuable for the natural hazards community. They considered it trustworthy for data storage and impactful for data sharing, collaboration, and accelerating their research. However, users faced challenges due to a lack of education on the platform's full potential and technical issues. Training survey respondents, most of whom had very little to no experience with DesignSafe prior to the trainings, expressed satisfaction with the trainings and planned to implement their new knowledge. User interviewees found DesignSafe valuable for its collaborative features, data storage and sharing capabilities, and analysis tools, but recommended improvements to its features, documentation, and the provision of more tutorials and webinars. Stakeholders acknowledged the project's accomplishments, such as updated resources, broader user base support, and open-access data sharing, and recommended further education and feature improvements. The evaluators recommend increasing and advertising training sessions, optimizing platform functionalities, encouraging and supporting data publication, continue building communities and capacity through Slack and earthquake researchers, and enhancing user guides, use cases, and documentation.