STTR Phase II: Fabrication and Structural Testing of a 3D Concrete Printed Anchor for Floating Offshore Wind

STTR 第二阶段：用于浮动海上风电的 3D 混凝土打印锚的制造和结构测试

• 批准号: 2333306
• 负责人: Jason Cotrell
• 金额: $ 99.95万
• 依托单位: RCAM TECHNOLOGIES
• 依托单位国家: 美国
• 项目类别: Cooperative Agreement
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-03-15 至 2026-02-28
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2333306&HistoricalAwards=false
• 关键词: STTR; Phase; II; Fabrication; Structural

The broader/commercial impact of this Small Business Technology Transfer (STTR) Phase II project is to lower the cost and accelerate deployment of clean renewable energy by advancing a 3D printed concrete anchor for floating offshore wind turbines. The anchor has potential to become the lowest cost, most scalable, and highest domestic content anchor solution, helping to maximize US jobs and economic benefits. The project advances the commercial potential of the technology by validating the structural design and mooring line connection, de-risking the anchor sufficiently to secure future investments. The project will enhance scientific and technology understanding by advancing U.S. capabilities in state-of-the-art 3D concrete printing technologies, enhancing industry and academia partnerships with the STTR university partner, and by performing research, development, and stakeholder outreach (including tours for over 2000 students, teachers, policymakers, investors, and government officials) at a port-side facility in Los Angeles, California. This Small Business Technology Transfer (STTR) Phase II project will advance the technology readiness level of an innovative, reliable, and low-cost 3D printed concrete suction anchor for mooring floating offshore wind turbines. Floating offshore wind power is poised for rapid growth in the United States, where approximately 2/3 of the offshore wind energy potential exists over waters deep enough to require the use of floating platforms. However, cost remains an obstacle to extensive deployment of floating wind. Development of low-cost anchoring presents an important opportunity for cost reduction. The key project objective is to develop a low-cost suction anchor capable of resisting extreme tension loads that arise where the mooring line connects to the anchor. The proposed research includes: 1. developing optimized detailed designs of anchors and mooring line connections manufactured using a 3D concrete printing process, 2. fabricating high-fidelity anchor prototypes, 3. validating the prototype anchor design via laboratory structural testing and finite element analysis, and 4. updating models for anchor manufacturing throughput, cost, and lifecycle emissions impacts. The anticipated technical results include an experimentally validated structural design and manufacturing approach for the anchor and corresponding models for production throughput, cost, and lifecycle impacts.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.

该小型企业技术转让 (STTR) 第二阶段项目的更广泛/商业影响是通过改进用于浮动海上风力涡轮机的 3D 打印混凝土锚来降低成本并加速清洁可再生能源的部署。该主播有潜力成为成本最低、可扩展性最强、国内内容最高的主播解决方案，有助于最大化美国就业和经济效益。该项目通过验证结构设计和系泊线连接来提高该技术的商业潜力，充分降低锚的风险以确保未来的投资。该项目将通过提高美国在最先进的 3D 混凝土打印技术方面的能力、加强与 STTR 大学合作伙伴的行业和学术界合作伙伴关系以及开展研究、开发和利益相关者外展活动（包括参观超过 2000 名学生、教师、政策制定者、投资者和政府官员）在加利福尼亚州洛杉矶的港口设施中。该小型企业技术转让 (STTR) 第二阶段项目将提高用于系泊浮动海上风力涡轮机的创新、可靠且低成本的 3D 打印混凝土吸力锚的技术准备水平。浮动式海上风电在美国有望快速增长，其中大约 2/3 的海上风能潜力存在于足够深的水域，需要使用浮动平台。然而，成本仍然是浮动风电广泛部署的障碍。低成本锚固的发展为降低成本提供了重要机遇。项目的主要目标是开发一种低成本的吸力锚，能够抵抗系泊线与锚连接处产生的极端拉力载荷。拟议的研究包括：1.开发使用3D混凝土打印工艺制造的锚和系泊线连接的优化详细设计，2.制造高保真锚原型，3.通过实验室结构测试和有限元分析验证原型锚设计， 4. 更新主力制造产量、成本和生命周期排放影响的模型。预期的技术成果包括经过实验验证的锚结构设计和制造方法以及相应的生产量、成本和生命周期影响模型。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生命周期进行评估，被认为值得支持。更广泛的影响审查标准。