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CAREER: Beyond the Code - Towards Next Generation Design for Deep Foundations

职业生涯：超越规范 - 迈向下一代深层基础设计

基本信息

批准号：
1752303
负责人：
Anne Lemnitzer
金额：
$ 50万
依托单位：
University of California-Irvine
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-09-01 至 2024-08-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1752303&HistoricalAwards=false
关键词：
CAREER Beyond Code Towards Next

项目摘要

This Faculty Early Career Development Program (CAREER) award will create a synthesized, geo-structural, and risk-informed framework for deep foundation engineering analysis and design. Recent events, both domestically and internationally, have highlighted the critical nature of foundation resilience in ensuring continued infrastructure function following natural disasters. The framework to be developed will be capable of providing next-generation resistance formulations for infrastructure foundations capable of reliably and holistically assessing the behavior and response of deep foundations under multiaxial loading. The framework will offer more accurate and parsimonious design solutions which will reduce overdesign, and require less material. It will spur the introduction and implementation of novel instrumentation technologies and sustainable materials. In addition, research findings will accelerate the transition to use of high-performance materials with permanently integrated integrity assessment capabilities by providing a validated design platform to accurately characterize foundation response behavior. This will potentially result in substantial reductions in the cost of building foundations. The CAREER educational objectives focus on stimulating interdisciplinary curiosity and growth through diverse curricular efforts and industry involvement in geo-structural undergraduate and graduate classroom training. It will cater to the increasing demand for technical rigor and a global mindset in engineering graduates. Professional career development activities will supplement the technical educational activities to increase the retention of diversity in geo-structural engineering in academia and industry, and stimulate a lifelong interest in research and development. The latter part of the educational plan will specifically target female engineers, and is aligned with NSF INCLUDES.The core of the CAREER research consists of executing well-coordinated, large-scale experimental- and risk-informed numerical simulations to generate baseline knowledge that aids the development of integrated, performance-based assessment metrics. Specifically, this research will enable the (i) derivation of robust, next-generation loading-response formulations; (ii) development of creative experimental tools to holistically evaluate damage evolution; (iii) validation of models for design and post-hazard integrity analyses, and (iv) risk-driven sensitivity studies to connect all components into a unified decision-making framework. In addition, the experimental studies will fill vital data gaps through prototype-scale testing of soil-pile systems for which limited research has been performed, i.e., specifically targeting piles with complex structural fixity conditions at the pile head and pile tip. Another aspect of the research will develop innovative experimental tools to improve our fundamental understanding of complex three-dimensional (3D) soil-structure interaction (SSI) by extracting volumetric measurements in deep foundation systems via 3D printed, cast in place instrumentation technologies. The research program will benefit the profession by implementing new understanding in software tools usable for individual component and system analysis for a broad spectrum of infrastructure beyond deep foundations.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.

该学院早期职业发展计划(Career)奖将为深基础工程分析和设计创建一个综合的、土工结构的和了解风险的框架。最近发生的国内和国际事件突出表明，在确保自然灾害后基础设施继续发挥作用方面，基础复原力具有至关重要的性质。即将开发的框架将能够为基础设施基础提供下一代抗力配方，能够可靠和全面地评估深基础在多轴荷载下的行为和反应。该框架将提供更准确和节省的设计解决方案，减少过度设计，并需要更少的材料。它将鼓励引进和实施新的仪器技术和可持续材料。此外，研究成果将通过提供一个经过验证的设计平台来准确描述地基响应行为，从而加快向使用具有永久集成完整性评估能力的高性能材料的过渡。这可能会大大降低建造地基的成本。职业教育的目标集中于通过不同的课程努力和行业参与到地质结构本科生和研究生课堂培训中，激发跨学科的好奇心和成长。它将迎合工程专业毕业生对技术严谨和全球思维的日益增长的需求。专业职业发展活动将补充技术教育活动，以增加学术界和工业界对岩土结构工程多样性的保留，并激发对研究和开发的终身兴趣。教育计划的后半部分将专门针对女性工程师，并与NSF INCLUDES保持一致。职业研究的核心包括执行协调良好的、大规模的实验和风险知情的数值模拟，以生成基线知识，以帮助开发综合的、基于绩效的评估指标。具体地说，这项研究将使以下工作成为可能：(1)得出稳健的下一代载荷-反应公式；(2)开发创造性的实验工具，对损害演变进行全面评估；(3)验证设计和危害后完整性分析模型；(4)进行风险驱动的敏感性研究，将所有组成部分纳入统一的决策框架。此外，实验研究将通过对已进行有限研究的土-桩系统进行原型规模测试来填补重要的数据空白，即专门针对在桩头和桩端具有复杂结构固定条件的桩。研究的另一个方面将开发创新的实验工具，通过3D打印、浇注就地测量技术提取深基础系统中的体积测量，以提高我们对复杂三维(3D)土-结构相互作用(SSI)的基本理解。该研究计划将通过在软件工具中实现新的理解，从而使该行业受益，这些工具可用于对深基础以外的广泛基础设施进行个别组件和系统分析。该奖项反映了NSF的法定使命，并通过使用基金会的智力优势和更广泛的影响审查标准进行评估，被认为值得支持。