Natural Hazards Engineering Research Infrastructure: Experimental Facility with Large, Mobile Dynamic Shakers for Field Testing 2021-2025

自然灾害工程研究基础设施：配备大型移动动态振动台进行现场测试的实验设施 2021-2025

• 批准号: 2037900
• 负责人: Kenneth Stokoe
• 金额: $ 424.22万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Cooperative Agreement
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-01-01 至 2025-09-30
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2037900&HistoricalAwards=false
• 关键词: Natural; Hazards; Engineering; Research; Infrastructure

The Natural Hazards Engineering Research Infrastructure (NHERI) is supported by the National Science Foundation (NSF) as a distributed, multi-user national facility to provide the natural hazards engineering research community with access to research infrastructure that includes earthquake and wind engineering experimental facilities, cyberinfrastructure (CI), computational modeling and simulation tools, high performance computing resources, and research data, as well as education and community outreach activities. Originally funded under program solicitations NSF 14-605 and NSF 15-598, NHERI has operated since 2015 through separate, but coordinated, five-year research infrastructure awards for a Network Coordination Office, CI, Computational Modeling and Simulation Center, and Experimental Facilities, including a post-disaster, rapid response research facility. Information about NHERI resources are available at the NHERI web portal (https://www.DesignSafe-ci.org). Awards made for NHERI contribute to NSF's role in the National Earthquake Hazards Reduction Program (NEHRP) and the National Windstorm Impact Reduction Program (NWIRP). NHERI Experimental Facilities will provide access to their experimental resources, user services, and data management infrastructure for NSF-supported research and education awards. This award will renew support for the NHERI Experimental Facility located at the University of Texas at Austin from January 1, 2021, to September 30, 2025. Through this award, researchers will have access to large, mobile dynamic shakers and associated instrumentation for field experimental studies in natural hazards engineering. These large mobile shakers can be used to study and develop novel, in-situ testing methods for subsurface imaging and determining in-situ soil properties, evaluate the vulnerability of existing civil infrastructure to natural hazards, and optimize the design of future infrastructure. These advances will result in communities that are more resilient to earthquakes and other natural hazards. While small- to large-scale laboratory testing can provide valuable research data, there remains the need to field test a wide variety of infrastructure, as constructed, in its current state. The facility's equipment will support in-situ testing and allow for research tools to be developed in critical areas such as three-dimensional (3D) subsurface imaging (with applications such as rapid levee evaluation and void/cavity detection) and non-destructive testing (with applications such as advanced soil liquefaction evaluation and soil-foundation-structure interaction studies for buildings and bridges). Progress in these areas will lead the nation to the next frontier of resilient and sustainable infrastructure, which will benefit society and support continued economic, intellectual, and scientific growth. Experimental data generated from research conducted at this facility will be archived in the Data Depot on the NHERI web portal. The facility will conduct annual user workshops and will host Research Experiences for Undergraduate students. The facility will enable researchers to address three main challenges to making in-situ testing advancements that, if accomplished, could transform the ability to rehabilitate and build more resilient and sustainable communities. These three main challenges are: (1) significantly improving the accuracy and resolution of shallow-to-deep (greater than 1,000 meters) two-dimensional (2D) and 3D subsurface imaging; (2) characterizing the nonlinear dynamic response and liquefaction resistance of complex geomaterials in-situ; and (3) developing rapid, in-situ methods for non-destructive structural evaluations and for soil-foundation-structure interaction studies. While more heavily weighted toward addressing earthquake hazards, the ability to solve these challenges will also affect multi-hazard resiliency. For example, the challenge of performing rapid 2D and 3D subsurface imaging will apply directly to prioritizing rehabilitation of the nation's existing levee systems, many of which are currently not resilient to traditional flooding, hurricane storm surges, or earthquakes. The next frontier of natural hazards research requires that engineers develop practical solutions for complex problems, which will necessitate testing civil infrastructure systems over a wide range of actual field conditions. This in-situ testing can be accomplished using the mobile dynamic shakers and associated instrumentation of this facility. Additionally, to develop more resilient and sustainable communities, the facility will conduct outreach to engage and cultivate a diverse and talented group of future engineers who can address the challenges that face a rapidly growing population supported by aging infrastructure at risk to natural hazards.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

自然危害工程研究基础设施（NHERI）得到国家科学基金会（NSF）作为分布式的，多用户的国家设施，可为自然危害工程研究社区提供获得地震和风力工程实验设施的研究基础设施的访问，包括Cyber​​infrasture（CIBERTACTION（CI），计算上的模型和仿真工具，以及进行计算和高度计算机，以及高级计算和高级计算，包括网络和风能工程实验设施。 NHERI最初由计划招标资助NSF 14-605和NSF 15-598，自2015年以来从2015年以来通过单独但协调的五年研究基础设施奖励网络协调办公室，CI，计算建模和仿真中心以及实验性设施，包括后置措施，快速响应研究设施。有关NHERI资源的信息，请访问NHERI Web门户网站（https://www.designsafe-ci.org）。 NHERI颁发的奖项促进了NSF在国家地震危害计划（NEHRP）和国家风暴影响减少计划（NWIRP）中的作用。 NHERI实验设施将为NSF支持的研究和教育奖提供访问其实验资源，用户服务和数据管理基础架构。该奖项将于2021年1月1日至2025年9月30日在德克萨斯大学奥斯汀分校的NHERI实验设施恢复支持。通过该奖项，研究人员将可以使用自然危害工程的大型移动动态动摇器和相关的实地实验研究。这些大型移动振动器可用于研究和开发用于地下成像和确定原位土壤特性的新颖的原位测试方法，评估现有的民用基础设施对自然危害的脆弱性，并优化未来基础设施的设计。这些进步将导致社区对地震和其他自然危害更具弹性。尽管小型至大规模的实验室测试可以提供有价值的研究数据，但仍需要在当前状态下进行现场测试各种基础设施。该设施的设备将支持现场测试，并允许在诸如三维（3D）地下成像（诸如快速堤防评估和无效/空腔检测）等关键领域开发研究工具（以及用于构建的高级土壤液化评估和构建构建构建和Brids and Action Actionction等应用程序）。这些领域的进步将带领国家进入下一个韧性和可持续基础设施的边界，这将使社会受益并支持持续的经济，智力和科学发展。 该设施进行的研究产生的实验数据将在NHERI Web门户网站的数据库中存档。该设施将举办年度用户研讨会，并将为本科生举办研究经验。该设施将使研究人员能够应对实现现场测试进步的三个主要挑战，如果取得成就，可以改变康复和建立更具韧性和可持续性社区的能力。这三个主要挑战是：（1）显着提高了浅至深度（大于1,000米）二维（2D）和3D地下成像的准确性和分辨率； （2）表征复杂地材料在原地的非线性动态反应和液化抗性； （3）开发快速的原位方法，用于非破坏性结构评估以及土壤结构的相互作用研究。 虽然更为重的解决地震危害，但解决这些挑战的能力也会影响多危险的弹性。例如，执行快速2D和3D地下成像的挑战将直接用于优先考虑该国现有堤防系统的康复，其中许多目前对传统的洪水，飓风风暴或地震没有弹性。下一个自然危害研究的领域要求工程师为复杂问题开发实用解决方案，这将需要在广泛的实际现场条件下测试民用基础设施系统。可以使用该设施的移动动态振动器和相关仪器来完成此原位测试。此外，为了建立更具韧性和可持续性的社区，该设施将进行宣传，以参与和培养一群未来的工程师群体，他们可以应对面临迅速增长的人口的挑战，该挑战是由衰老的基础架构承受的危险中的自然危害的衰老人群所支持的。该奖项反映了NSF的法定任务，并通过评估范围来反映出支持者的知识群体，并众所周知，该奖项的范围众所周知。

项目成果

Experimental study of passive seismic vibration isolation by trench-type periodic barrier

• DOI: 10.1016/j.engstruct.2022.115308
• 发表时间: 2023-02
• 期刊: Engineering Structures
• 影响因子: 5.5
• 作者: Nagesh Ramaswamy;Bhagirath Joshi;Jiaji Wang;Xiaoliang Li;F. Menq;Xiaonan Shan;Kalyana Babu Nakshatrala;K. Stokoe;Y. Mo

Investigation of DSSI Effects on the Dynamic Response of an Overpass Bridge through the Use of Mobile Shakers and Numerical Simulations

通过使用移动振动台和数值模拟研究 DSSI 对立交桥动态响应的影响

• DOI: 10.1061/(asce)be.1943-5592.0001856
• 发表时间: 2022
• 期刊: Journal of Bridge Engineering
• 影响因子: 3.6
• 作者: Farrag, Sharef;Gucunski, Nenad;Cox, Brady;Menq, Farnyuh;Moon, Franklin;DeVitis, John
• 通讯作者: DeVitis, John

Two-Dimensional Finite-Element Simulation of Periodic Barriers

周期性势垒的二维有限元模拟

• DOI: 10.1061/(asce)em.1943-7889.0001891
• 发表时间: 2021
• 期刊: Journal of Engineering Mechanics
• 影响因子: 3.3
• 作者: Huang, Hsuan Wen;Wang, Jiaji;Zhao, Chunfeng;Mo, Y. L.
• 通讯作者: Mo, Y. L.

Multidirectional Vibroseis Shaking and Controlled Blasting to Determine the Dynamic In Situ Response of a Low-Plasticity Silt Deposit

• DOI: 10.1061/(asce)gt.1943-5606.0002924
• 发表时间: 2023-03
• 期刊: Journal of Geotechnical and Geoenvironmental Engineering
• 影响因子: 3.9
• 作者: A. Jana;A. Dadashiserej;Benchen Zhang;A. Stuedlein;T. Matthew Evans;K. Stokoe;B. Cox

Experimental study on wave isolation performance of periodic barriers

• DOI: 10.1016/j.soildyn.2021.106602
• 发表时间: 2021-02-24
• 期刊: SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
• 影响因子: 4
• 作者: Huang, Hsuan Wen;Zhang, Benchen;Stokoe, K. H.
• 通讯作者: Stokoe, K. H.