NEESR Planning/Collaborative Research: Liquefaction Experiments and Analysis Projects (LEAP) for Validation

NEESR 规划/合作研究：用于验证的液化实验和分析项目 (LEAP)

• 批准号: 1344630
• 负责人: Bruce Kutter
• 金额: $ 13.3万
• 依托单位: University of California-Davis
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-10-01 至 2016-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1344630&HistoricalAwards=false
• 关键词: NEESR; Planning; Collaborative; Research; Liquefaction

The main objective of this planning project is to lay the groundwork and to conduct preliminary research and preparation activities for a subsequent NEESR2 proposal to produce a high quality experimental data, as well as validate and develop confidence in the computational tools used for liquefaction analysis. The ultimate goal of the project is to advance the current understanding and computational predictive capabilities of the liquefaction phenomenon and its consequences on civil infrastructure systems through integrated centrifuge experiments and numerical simulations. The essential elements of this planning project consist of: a) a planning workshop to identify a group of boundary value problems and the material(s) of choice (e.g., type of sand) in the subsequent centrifuge tests of the NEESR2 project, b) an extensive and careful review and compilation of the experimental data available in the NEEShub and other relevant databases, c) preliminary class-C numerical simulations to begin the process of assessing the modeling capabilities currently available in the research community and geotechnical practice, d) design of a series of centrifuge tests that simulate a set of boundary value problems of interest to geotechnical practice with an increasing order of complexity, e) a prediction exercise symposium that leverages the results of the centrifuge tests that will be conducted by our international collaborators in the UK, Japan, and China, and f) development of validation metrics, tools, and protocols to assess the reliability of computational models.This planning project and the follow-on NEESR2 project will provide high quality validation data that will reduce the need for certain routine experiments and hence allow more resources to be used on experiments that explore new features of soil behavior. In turn, validated numerical modeling techniques and high confidence in their predictive capabilities will reduce the dependence of the profession on large scale costly experiments. The project will provide a rare opportunity for collaboration with the international community on a research topic that is of critical value to the international geotechnical engineering community. Three graduate students will participate in the project and will be trained in physical and numerical modeling of liquefiable soils. The three institutions will continue and build on their current outreach efforts to attract members of under-represented groups to participate in the project as graduate students. The project will establish an experimental dataset and a formal protocol for validation of our simulation tools to fully elucidate their capabilities and limitations. These capabilities and limitations are essential for intelligent management and maintenance of our infrastructure. Data from this project will be archived and made available to the public through the NEES data repository. This award is part of the National Earthquake Hazards Reduction Program (NEHRP).

该计划项目的主要目的是为随后的NEESR2提案提供基础工作并进行初步研究和准备活动，以产生高质量的实验数据，并验证和建立对用于液化分析的计算工具的信心。 该项目的最终目标是通过集成离心机实验和数值模拟来推进液化现象的当前理解和计算预测能力及其对民用基础设施系统的影响。 该计划项目的基本要素包括：a）在对NEESR2项目的离心测试中，确定一组边界价值问题的计划研讨会以及选择的材料（例如，沙子类型）（例如，沙子类型），b）对NEESHUB和CLELIMIMILITAL中的其他模型进行了广泛且仔细的审查和仔细审查，并评估了其他相关数据，C）neShub和c）clalimimilimitiars c）。研究社区和岩土技术实践中目前可用的功能，d）设计一系列的离心测试，以越来越复杂的阶层模拟岩土技术实践中感兴趣的边界价值问题，e）一项预测练习研讨会，利用我们的国际协作者在英国和国际协作的工具中，以及日本，日本，以及FROMATION，以及日本的国际协作，以及FROMESS，日本，以及FROMPATION，日本和Formental oferation of Contres and equarn interiation Mentrifuge测试。评估计算模型的可靠性。此计划项目和后续NEESR2项目将提供高质量的验证数据，以减少对某些常规实验的需求，从而允许在探索土壤行为新特征的实验中使用更多资源。 反过来，经过验证的数值建模技术和对其预测能力的高信心将减少该行业对大规模昂贵实验的依赖性。 该项目将为与国际社会的研究主题合作提供难得的机会，该研究主题对国际岩土工程社区至关重要。三名研究生将参加该项目，并将接受对液化土壤的物理和数值建模进行培训。 这三个机构将继续并以他们目前的外展工作为基础，以吸引代表性不足的团体成员作为研究生参加该项目。 该项目将建立一个实验数据集和正式协议，以验证我们的仿真工具，以完全阐明其功能和局限性。这些功能和局限性对于我们的基础设施的智能管理和维护至关重要。 该项目的数据将通过NEES数据存储库进行存档并提供给公众。 该奖项是国家地震危害计划（NEHRP）的一部分。