cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17603/ds2gd74
title: Wall Panel Test 6
title: in NEESR: Seismic Performance of Conventional and Innovative Special Structural Walls

description: Reversed-cyclic pseudo static test of reinforced concrete wall panel representing plastic hinge region of a wall
description: The project explored design and performance limits for structural walls, considering both conventional wall construction practices and innovative construction practices. A principal finding of recent earthquakes (in 2010 and 2011) and laboratory tests from 200 to 2010 is that wall performance is limited by stability and ductility capacity of the flexural compression zone. Given this critical issue, a series of studies on conventional walls and boundary elements constructed with innovative materials (HPFRCC) to establish performance limits for flexural compression failures in reinforced concrete structural walls. Tests were designed to acquire knowledge, improve construction practices, and advance simulation tools. The primary research outcomes include: 

(1)	Completing  tests of eight ordinary boundary element (OBE) prisms at UCLA. The test specimens were detailed according to ACI 318-11 21.9.6.5 with the goal of assessing failure modes and strain capacities as influenced by concrete cover, configuration of transverse reinforcement, and spacing of transverse reinforcement. Based on the tests, a relationship used to assess buckling of longitudinal reinforcement was extended to wall boundaries with typical OBE detailing. 
(2)	Completing tests on 13 special boundary element (SBE) prisms at UC Berkeley. The tests investigated the role of boundary element detailing and wall thickness. The tests indicated that the strain capacity of relatively (< 12 inches) walls with ACI 318 code compliant SBE detailing was less than one percent and that improved detailing or high-performance, fiber-reinforced concrete did not improve the strain capacity significantly. 
(3)	Conducted tests on seven, approximately one-half scale wall panels represented the base of roughly 8 to 10 story walls in a moderately tall building.  The primary test variables were the configuration and quantity of boundary transverse reinforcement, the depth of the neutral axis, and the wall thickness. The test provided essential data to develop a new, displacement-based model for predicting the drift capacity of structural walls with SBE. 
(4)	Developing code change proposals that were approved for ACI 318-14 and additional code change proposals that have been approved for inclusion in ACI 318-19. 
(5)	Creating and documenting a detailed dataset that was uploaded to DesignSafe-ci Data Depot that can be used for future reserarch.
DOI: 10.17603/ds2-4ww3-5f22
title: Cyclic Load Friction Test of PTFE
title: in Seismic protection of artefacts with adhesives and base-isolation

description: This study investigates one of the commonly used methods in New Zealand which is by applying adhesives to anchor small to medium sized artefacts. Guidance is provided to determine the size and number of adhesives required for an artefact to survive design-level earthquake shaking. In addition, for large objects where adhesives alone are insufficient, a simple cost-effective base-isolation platform is proposed to reduce the seismic vulnerability of the artefacts. This platform is designed such that it can be assembled and positioned by museum conservators or private collectors. The adhesive material properties are determined through direct tension and shear experimental tests. The friction properties of the base-isolated substrate are determined through unidirectional quasi-static and cyclic load tests.
description: The coefficient of friction between PTFE and other surfaces was investigated. A shake table was used to simulate cyclic load with different frequencies. Test setup (including sensors), test specimens, and test data are uploaded.
DOI: 10.17603/ds2-wtck-5y96
title: Research Experiences for Undergraduates (REU), NHERI 2023: Characterization and Modeling of a Semi-active Rotary Friction Damper

description: This project characterizes and further models the dynamics of a novel semi-active rotary friction damper. The presented work may serve as a baseline for achieving semi-active control of the analyzed damper. This project is unique in that it is the first to describe semi-active operating characteristics of a previously introduced device. The audience of this work is the natural hazards engineering community and those studying semi-active friction dampers.
DOI: 10.17603/ds2-5x0c-2v08
title: Rio Grande Valley Resilience

description: This project examines text from regional flood plans in the Lower Rio Grande Valley of Texas. The data included county hazard mitigation plans and draft regional flood plan as well as text of transcripts generated from publicly-available Regional Flood Planning Group meetings.
DOI: 10.17603/ds2-ebpq-6s93
title: A longitudinal Survey of Homeowner Flood Mitigation Decisions: What are the Motivating Factors?

description: The goal of this project was to examine the factors that affect homeowner decision to choose flood risk mitigation activities including buyout, home elevation, and flood insurance. The curated data consist of both primary and secondary information. Primary data from 1, 366 predominantly coastal homeowners were collected in three waves: data obtained in wave 1 were collected from August 29 through September 15, 2018; wave 2 is from October 19 through November 23, 2018, and wave 3 is from March 18 through April 22, 2019. During these periods, US East Coast and Gulf Coast experienced Hurricanes Florence and Michael. The primary information in the dataset includes homeowner demographic information, property information such as house type, homeowner tenure in the property, year house was built, house damage experience, estimated extent of damage from past flood events, flood insurance information, mortgage information, and house elevation. Additionally, the primary data contains information on homeowner preference for buyouts, house first floor elevation, and flood insurance from a discrete choice experiment. For the secondary data, property address information is overlaid with spatial flood risk data layers to collect flood risk information including location in floodplain, distance from the coast, flood depth, and probability of flooding to the house under different storm event scenarios.
DOI: 10.17603/ds2-ywng-k954
title: Individual Interview Protocol
title: in Critical Links: Exploring the Connection between Community Assets and Latinx Social Capital for Disaster Resilience along the Oregon Coast

description: Through participant observation, focus group discussions, a novel conceptual mapping activity and semi-structured individual interviews, I explore the connections that exist between valued locations and social support networks for the Latinx community in Lincoln County, OR and how they are utilized as Latinx residents adapt to day-to-day challenges and/or impacts from natural hazards. The Pacific Northwest Region, which includes Washington, Oregon, and Northern California, is at risk of significant structural and economic damage and widespread loss of life from a massive subduction zone earthquake (7.0+) and resulting tsunami (Cascadia Event). In Oregon, the state is unprepared for the medical care and housing needs after a Cascadia event due to inadequate leveraging of community assets. Because vulnerable groups will experience the greatest and most long-lasting impacts, this research specifically utilized research methodologies aimed at connecting with Latinx community members, who are an ethnic minority in the state. Participant observation was utilized to build relationships and familiarity with the community. For additional documentation and materials regarding the participant observation methodology, please contact the researcher. The results of participant observation and input from community members and advisors were utilized to develop the finalized focus group protocol provided here. Four focus groups were conducted between October-November 2022. Semi-structured interviews were held between November-February 2023. Contained within this collection are the focus group protocol, conceptual mapping activity, demographics questions that were utilized, and semi-structured interview guide, all available in English and Spanish.
description: This document contains the semi-structured interview protocol utilized for interviews with employees at community-based organizations in Lincoln County, OR. Participants were identified through the previously held focus groups as community leaders that could provide valuable insight and context to data collected in the focus group groups. Questions were included that asked them about their role with the organization as their service of the community, as well as their individual experiences as community members and leaders in various capacities. Community adaptive capacity to coastal hazards was addressed or incorporated into multiple questions. Development of this protocol was supported by Dr. Savannah D'Evelyn who shared protocols and insights from work on community exposure to wildfire smoke. Interviews lasted approximately 1 hour and were conducted in both English and Spanish depending on the preferred language of the participant.
DOI: 10.17603/ds2-g2m2-yr96
title: Nonlinear dynamic simulations of buildings subjected to physics-based simulated earthquake ground motions
title: in Ground Motion Selection for Analysis of Near-Fault Civil Structures using Broadband Physics-Based Earthquake Simulations

description: The simulations assess the response of modern reinforced concrete building structures to broadband physics-based simulated earthquake ground motions.
description: Broadband physics-based earthquake simulations are used to study the characteristics of near-fault ground motions and their impacts on building structures. The study focuses on two aspects of near-fault ground motion: (1) strong double-sided velocity pulses which are induced by forward rupture directivity effects, and (2) single-sided velocity pulses accompanying the permanent ground offset near the fault, which are known as fling step. The study examines the characteristics and impacts of both of these phenomena on engineering demand parameters, and assesses the need for explicitly incorporating them in the selection of representative ground motion records for nonlinear analysis of near-fault structures. The performance of simulated earthquake ground motions is compared against real records in a scenario-based seismic analysis context. Based on the findings of the study, guidance on using physics-based earthquake simulations in performance-based seismic engineering applications is developed, and opportunities for future improvements of earthquake simulations and near-fault ground motion selection procedures are highlighted.
DOI: 10.17603/ds2-atmx-gp96
title: Processed data and the final point clouds for the historic masonry structures in Mayfield, Kentucky
title: in RAPID: Mayfield, KY Post-Tornado Building Reconnaissance

description: The process of generating a comprehensive point cloud from the raw data collected at Mayfield involved three distinct steps. Firstly, Pix4D was utilized to process and analyze the data. This was followed by the utilization of Register 360 to further refine and align the collected data. Finally, Cyclone was used to complete the point cloud generation process, ensuring that the resulting point cloud was as detailed and accurate as possible. The combination of these three steps allowed for the creation of a comprehensive point cloud that could be utilized for a variety of applications, ranging from surveying and mapping to construction and design.
description: Damage reconnaissance of historical buildings affected by tornado loading
DOI: 10.17603/ds2-ht5b-5747
title: ISROC Dataset for: Digital mapping of coastal boulders – high-resolution data acquisition to infer past and recent transport dynamics
title: in Inundation Signatures on Rocky Coastlines (ISROC) Global Coastal Boulder Deposits Datasets Version 1

description: This document contains standardized data as an Excel and NC file as well as explanatory notes for "Digital mapping of coastal boulders – high-resolution data acquisition to infer past and recent transport dynamics." The project includes 79 coastal boulder deposits in the Philippines from Typhoons Hagupit and Haiyan. The purpose is to determine the pros and cons of digital boulder mapping, like orthophotography, due to the size of the boulder and the field environment.
description: This project is a collection of datasets on studies about coastal boulder deposits worldwide. Each document is a unique dataset that contains data from a published study. The document's name reflects the name of the associated paper, and all authors of papers are given credit in the respective document. Each dataset's data is standardized into an ISROC-formatted Excel and NC File. Also, every dataset has explanatory notes, which contain a data dictionary explaining data parameters and appropriate units, Some datasets have the raw data given to ISROC by the paper's authors. By creating a database in the public domain, ISROC hopes to promote academic collaboration in the field. ISROC, an NSF-funded research network, funds this project.
DOI: 10.17603/ds2-saf8-4d32
title: StEER - Hurricane Dorian: Preliminary Virtual Reconnaissance Report (PVRR)

description: On September 1, 2019, Hurricane Dorian made landfall on Elbow Cay in the Bahamas at 16:40 UTC with sustained winds of 185 mph (295 km/h), wind gusts up to 225 mph (360 km/h), and a central pressure of 910 mb, tying Dorian with the 1935 Labor Day hurricane for the strongest sustained winds observed in a landfall in the Atlantic Basin. Shortly thereafter, Dorian made a second landfall in the Bahamas at Marsh Harbour on Great Abaco Island before continuing westward across Grand Bahama Island. After nearly two days pummeling Grand Bahama Island, setting records for the longest duration over land at a Category 5 intensity, Dorian approached the US in a weakened state with its most notable impacts confined to flooding and tornadoes in the Carolinas. The devastation to the Bahamas is staggering and driven in large part by storm surge, in excess of an estimated 20 feet above mean sea level in some locations. Preliminary losses (insured and uninsured) are estimated at $7B, not yet accounting for infrastructure losses. Rapid assessments suggest that more than 13,000 houses, or about 45% of the homes in Grand Bahama and Abaco, were likely severely damaged or destroyed. Significant impacts to healthcare facilities, airports, roadways and power infrastructure in Grand Bahama and Abaco islands have also been extensively documented. While in no way diminishing Dorian’s impact on the Carolinas, the careful examination of properties with little to no damage in this record-breaking event is an important validation of design and construction practices. This Preliminary Virtual Reconnaissance Report (PVRR) represents StEER’s first step in the process of learning from this disaster by (1) providing an overview of Hurricane Dorian’s impact on the built environment, including the effects of its hurricane-force winds, coastal storm surge and cyclone-induced tornadoes, (2) overviewing the regulatory environment and construction practices in the Bahamas, (3) summarizing the preliminary reports of damage to a range of building and infrastructure classes, (4) establishing current conditions in the Bahamas with respect to access and services, and (5) providing recommendations to inform the continued study of this event.
DOI: 10.17603/ds2-vn2w-nx44
title: Simulating the Effects of Site Geometry on Lateral Spread Displacements
title: in Numerical modeling of lateral spread displacements at free-face sites using OpenSees

description: This data set contains files from numerical simulations of free-face lateral spread sites that were analyzed using OpenSees.  The main goals of this study were to investigate the effects of site geometry, soil relative density, and earthquake shaking characteristics on lateral spreading displacements.  As such, the data set is split into two simulations:  (1) A suite of 132 models were analyzed with one ground motion to investigate the effects of site geometry and soil relative density on lateral spread displacement patterns, (2) A subset of 6 of the site geometries from the first set of simulations was analyzed with 2 soil relative densities and 38 ground motions for a total of 456 models to study the effects of earthquake shaking characteristics on lateral spread displacements.
description: This data set contains files from a study that used OpenSees to simulate lateral spread displacements of 132 models with varying site geometries and soil relative densities.  All of the models were analyzed with a single, large intensity earthquake in an effort to isolate the effects of site geometry on lateral spread displacements.
DOI: 10.17603/ds2-8evm-1y60
title: Hydrodynamic Tests on  Physical Models of Scaled Wood Frame Shear-Wall Residential Buildings
title: in Progressive Damage and Failure of Wood-Frame Coastal Residential Structures Due to Hurricane Surge and Wave Forces

description: A physical model study was performed to examine the response of two 1:6 scale wood-frame coastal residential structures subjected to storm surge and waves. An on-grade and an elevated specimen were tested. Several in-air static and dynamic structural tests (combined lateral load-displacement and free vibration tests, ambient vibration and forced vibration tests) and destructive hydrodynamic tests under regular waves with varying water depth and wave heights were performed. During structural tests, lateral load-displacement and acceleration data were gathered for structural characterization (strength, stiffness, frequency, mode shape, and damping). During hydrodynamic tests, water depth, wave height, and velocity were measured in the wave basin and uplift pressure, force, and acceleration were measured on the specimens. The data gathered may help engineers and numerical modelers better understand the wave-structure interaction, damage progression, and help in improving design criteria of coastal residential structures subjected to hurricane overland surge and wave loading.
description: An on-grade and an elevated specimen were tested and exposed to regular waves, in the Directional Wave Basin (DWB) at Oregon State University, with varying water depths and wave heights to simulate typical wave/surge conditions resulting from landfall hurricanes on low-lying barrier islands such as Hurricane Sandy that impacted the US East Coast in 2012 and Hurricane Ike that impacted the US Gulf Coast in 2008. Several instruments were used in the experiment, including nine wire resistance wave gauges located offshore, eight ultrasonic wave gauges located onshore near the specimens, four acoustic-doppler velocimeters, twelve pressure sensors, four load cells, and four triaxial accelerometers located on the specimens. The data (water depth, wave height, velocity, pressure, force, acceleration) gathered can help engineers and numerical modelers better understand the wave-structure interaction and help in improving design criteria of coastal light wood frame residential structures subjected to hurricane overland surge and wave loading.
DOI: 10.17603/ds2-zamb-m974
title: 2022 Michoacan Earthquake GEER Reconnaissance
title: in GEER Michoacan 2022 Earthquake

description: A seismic event of moment magnitude M7.7 (SSN, 2022) in Michoacan, Mexico, struck the central region of Mexico on September 19, 2022, at 13:05:09 hours (18:05:09 GMT), almost an hour after a national earthquake drill was carried out to prepare for catastrophic events and commemorate the 1985 and 2017 earthquakes. A research team consisting of graduate students and faculty from the National Autonomous University of México (UNAM), and professional of Lettis Consultants International, Inc,  performed a preliminary field investigation of seismic geotechnical issues under the sponsorship of the Institute of Engineering of UNAM (IIUNAM), National Science Foundation (NSF) and the Geotechnical Extreme Events Reconnaissance Association (GEER).
description: Structural and non-structural damage to buildings, liquefaction, landsliding.
DOI: 10.17603/ds2198x
title: Wall Boundary Element Test #14
title: in NEESR: Seismic Performance of Conventional and Innovative Special Structural Walls

description: Uniaxial test of a reinforced concrete wall boundary element #14
description: The project explored design and performance limits for structural walls, considering both conventional wall construction practices and innovative construction practices. A principal finding of recent earthquakes (in 2010 and 2011) and laboratory tests from 200 to 2010 is that wall performance is limited by stability and ductility capacity of the flexural compression zone. Given this critical issue, a series of studies on conventional walls and boundary elements constructed with innovative materials (HPFRCC) to establish performance limits for flexural compression failures in reinforced concrete structural walls. Tests were designed to acquire knowledge, improve construction practices, and advance simulation tools. The primary research outcomes include: 

(1)	Completing  tests of eight ordinary boundary element (OBE) prisms at UCLA. The test specimens were detailed according to ACI 318-11 21.9.6.5 with the goal of assessing failure modes and strain capacities as influenced by concrete cover, configuration of transverse reinforcement, and spacing of transverse reinforcement. Based on the tests, a relationship used to assess buckling of longitudinal reinforcement was extended to wall boundaries with typical OBE detailing. 
(2)	Completing tests on 13 special boundary element (SBE) prisms at UC Berkeley. The tests investigated the role of boundary element detailing and wall thickness. The tests indicated that the strain capacity of relatively (< 12 inches) walls with ACI 318 code compliant SBE detailing was less than one percent and that improved detailing or high-performance, fiber-reinforced concrete did not improve the strain capacity significantly. 
(3)	Conducted tests on seven, approximately one-half scale wall panels represented the base of roughly 8 to 10 story walls in a moderately tall building.  The primary test variables were the configuration and quantity of boundary transverse reinforcement, the depth of the neutral axis, and the wall thickness. The test provided essential data to develop a new, displacement-based model for predicting the drift capacity of structural walls with SBE. 
(4)	Developing code change proposals that were approved for ACI 318-14 and additional code change proposals that have been approved for inclusion in ACI 318-19. 
(5)	Creating and documenting a detailed dataset that was uploaded to DesignSafe-ci Data Depot that can be used for future reserarch.
DOI: 10.17603/ds2-k042-wm72
title: Natural Hazards Research Summit 2024: Fostering Collaboration to Drive Innovation in Disaster Recovery and Community Resilience

description: The SimCenter provides an open platform that provides public access to a wide range of models for natural hazard risk simulation so that everyone can explore, utilize, and improve these models. A shared simulation platform by leading experts in academia and industry facilitates the adoption and benchmarking of new models and accelerates innovation. An illustrative example demonstrates the impact of this platform on the new generation of models and the future of recovery simulation in earthquake engineering.