CAREER: Soil Penetration through Bioinspired Stress State Manipulation

职业：通过仿生应力状态操纵进行土壤渗透

基本信息

批准号：
1942369
负责人：
Alejandro Martinez
金额：
$ 50万
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：
2020
资助国家：
美国
起止时间：
2020-03-01 至 2025-02-28
项目状态：
未结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1942369&HistoricalAwards=false
关键词：
CAREER Soil Penetration through Bioinspired

项目摘要

This Faculty Early Career Development (CAREER) grant will advance understanding and evaluate the application of several adaptive and energy-efficient soil penetration processes to inspire a new paradigm for design and construction of civil infrastructure. Current and future environmental and economic challenges, including the continued growing population and the depletion of natural resources, create a strong demand for sustainable and adaptive infrastructure. Many aspects of our infrastructure rely on soil penetration processes, from the characterization of soils at project sites to construction. This project will improve our understanding of the soil burrowing and penetration strategies used by several insects, mollusks, and fishes to develop innovative solutions for applications in foundation and anchorage systems, tunneling, soil characterization, and monitoring of sites and structures. The integrated educational, diversity, and outreach goals are to raise awareness and broaden the overall understanding of bioinspiration as a philosophy for development of sustainable engineering solutions and to help develop a workforce that is inclusive of Hispanic and Latinx students for the field of bioinspired geotechnics.The principal research goals of this project are to identify and quantify the mechanisms that enable efficient soil penetration in biological systems and to effectively upscale these mechanisms to physical scales relevant to civil infrastructure. Biological adaptations involved in wasp, honeybee, mosquito, and sand lance substrate penetration, earth and marine worm locomotion, caecilian and clam burrowing, and root growth will be explored. This project will integrate bioinspired design, laboratory experiments, discrete element modeling simulations, and centrifuge models. The fundamental mechanical processes that facilitate bioinspired soil penetration will be investigated, including soil arching, principal stress rotation, interactions between zones with altered stress states, load transfer and its dependency on shape, and softening caused by pore fluid pressurization. The education and outreach efforts will be targeted towards middle school and high school students through youth citizen science activities and towards undergraduate and graduate students through training in the classroom and the laboratory. This educational and outreach plan will aim to increase participation of Hispanic and Latinx students in the bioinspired geotechnics field.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.

这项教师早期职业发展（职业）赠款将提高理解和评估几种适应性和节能的土壤渗透过程的应用，以激发用于设计和建设民用基础设施的新范式。当前和未来的环境和经济挑战，包括持续不断增长的人口以及自然资源的耗尽，对可持续和适应性基础设施的需求很大。我们的基础设施的许多方面都取决于土壤渗透过程，从项目地点的土壤表征到建筑。该项目将提高我们对几种昆虫，软体动物和鱼类使用的土壤挖掘和穿透策略的理解，以开发用于在基础和锚固系统中应用，隧道，土壤表征以及对地点和结构监测的创新解决方案。综合的教育，多样性和宣传目标是提高认识，扩大对生物启发性的总体理解，作为发展可持续工程解决方案的发展的哲学，并帮助发展一支劳动力，该劳动力包括西班牙裔和拉丁裔学生在西班牙裔和拉丁裔学生中，以实现生物启发的地理位置研究，以识别和识别效率高效的土地，以识别和量化有效的土壤，以供效率高效，以供效率高效，以供有效地掌握过高的土地学，以供有效的效率这些机制与与民用基础设施相关的物理量表。将探索WASP，Honeybee，蚊子和沙兰底物的渗透，地球和海洋蠕虫运动，Caecilian和Clam挖掘物以及根生长的生物适应。该项目将整合生物启发的设计，实验室实验，离散元素建模模拟和离心机模型。将研究促进生物启发的土壤渗透的基本机械过程，包括土壤拱门，主要应力旋转，变化应力状态变化的区域之间的相互作用，负载转移及其对形状的依赖以及孔隙流体加压引起的软化。通过青年公民科学活动，通过在课堂和实验室的培训中，通过青年公民科学活动以及针对本科和研究生的教育和外展工作将针对中学和高中生。这项教育和宣传计划将旨在增加西班牙裔和拉丁裔学生在生物启发的岩土技术领域的参与。该奖项反映了NSF的法定任务，并被认为是通过基金会的智力优点和更广泛影响的评估标准来评估值得通过评估来支持的。