NEESR-SG: International Hybrid Simulation of Tomorrow's Braced Frame Systems

NEESR-SG：未来支撑框架系统的国际混合仿真

• 批准号: 0619161
• 负责人: Charles Roeder
• 金额: $ 153.26万
• 依托单位: University of Washington
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-10-01 至 2011-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0619161&HistoricalAwards=false
• 关键词: NEESR; SG; International; Hybrid; Simulation

Abstract 0619161RoederThis award is an outcome of the NSF 06-504 program solicitation "George E. Brown, Jr. Network for Earthquake Engineering Simulation Research (NEESR)" competition. Intellectual Merit: Braced frame systems offer an attractive solution to satisfy multiple design criteria within a performance-based earthquake engineering (PBEE) framework. If detailed properly, their displacement and energy dissipation capacities can meet severe demands resulting from extreme events. However, research results have indicated that current design methods prevent braced frames with traditional and buckling-restrained braces from achieving their potential. The dynamic behavior of three-dimensional steel braced frame building systems is complex and often highly nonlinear. Assessing seismic performance in the context of the true system response and developing practical engineering tools are central objectives of this proposal. The consensus of a recent meeting focused on engineering steel buildings for the next decade was that the development of reliable braced frame systems was a top priority in seismic steel research and required the following: a coordinated, international effort, a central PBEE framework to tying the activities together, and collaboration with industry, professional practice and related organizations. This award provides such coordination. The project team includes researchers from the US, Japan, and Taiwan, as well as affiliated researchers from Canada. The research will utilize the NEES facilities at the University of Minnesota (UM) and the University of California, Berkeley (UCB), the NIED/E-Defense Miki shake table in Japan, and the NCREE Laboratory in Taiwan. The primary objective is to use advanced hybrid simulation research methods and international, cooperative investigation to develop performance-based tools and techniques for advanced seismic engineering of steel braced frame systems. Seven primary research phases are proposed: (1) infrastructure and literature and data analysis, (2) integrated-component and subassemblage testing, (3) development and validation of high-resolution and practical simulation methods, (4) integrated-system evaluation through coordinated, international hybrid testing facilities, (5) development of probabilistic-based engineering tools for PBEE of braced frame systems, (6) confirmation of the performance through earthquake simulator testing, and (7) evaluation and validation of the design and analysis tools. A key element of the research is an international hybrid test of a prototype structure that will include simultaneous testing at the two NEES facilities (UM and UCB) and the NCREE Laboratory in Taiwan, and simulation at the University of Washington. . Broader Impacts: This research has a direct, tangible and immediate impact on the seismic safety and performance of a widely used form of construction that many believe to be unnecessarily vulnerable to earthquakes, and accelerate the adoption of innovative technologies and construction practices. Steel structures constitute the majority of engineered building systems in the United States. This research will make steel buildings more economical, design methods more reliable, and increase the competitiveness of U.S. firms in the global economy. This project brings together professional engineers, researchers in the United States, Taiwan, and Japan, as well as representatives from industry and regulatory bodies in an integrated and synergistic fashion. An Advisory Group will assist in the cooperation and coordination to assure practical and useful engineering results and to provide rapid assimilation of these results by the engineering profession. This research will increase diversity and international collaboration through professional development short-courses oriented towards the training of faculty and practicing engineers, provide internship and research opportunities for Native American undergraduate students through the Pacific Alliance LSAMP program, and develop materials for pre-K through grade 12 students for education and exploration of the seismic response of braced systems.

该奖项是NSF 06-504项目招标“小乔治·e·布朗地震工程模拟研究网络（NEESR）”竞赛的结果。智力优势：支撑框架系统提供了一个有吸引力的解决方案，以满足基于性能的地震工程（PBEE）框架内的多个设计标准。如果详细说明，它们的位移和能量耗散能力可以满足极端事件的严重要求。然而，研究结果表明，目前的设计方法阻止支撑框架与传统和屈曲约束支撑实现其潜力。三维钢支撑框架建筑系统的动力特性是复杂的，往往是高度非线性的。在真实系统响应的背景下评估地震性能和开发实用的工程工具是本提案的中心目标。最近一次会议的重点是未来十年的工程钢结构建筑，会议一致认为，可靠的支撑框架系统的发展是抗震钢结构研究的首要任务，需要以下方面：协调的国际努力，一个将活动联系在一起的中央PBEE框架，以及与行业、专业实践和相关组织的合作。该奖项提供了这种协调。项目团队包括来自美国、日本和台湾的研究人员，以及来自加拿大的附属研究人员。该研究将利用明尼苏达大学（UM）和加州大学伯克利分校（UCB）的NEES设备、日本的NIED/E-Defense Miki振动台和台湾的NCREE实验室。主要目标是使用先进的混合模拟研究方法和国际合作调查，为钢支撑框架系统的先进地震工程开发基于性能的工具和技术。提出了七个主要研究阶段：(1)基础设施、文献和数据分析；(2)集成组件和组件测试；(3)开发和验证高分辨率和实用的模拟方法；(4)通过协调的国际混合测试设施进行集成系统评估；(5)开发基于概率的支撑框架系统PBEE工程工具；(6)通过地震模拟器测试确认性能；(7)设计和分析工具的评价和验证。该研究的一个关键要素是对原型结构进行国际混合测试，该测试将包括在两个NEES设施（UM和UCB）和台湾的NCREE实验室同时进行测试，以及在华盛顿大学进行模拟。更广泛的影响：这项研究对一种广泛使用的建筑形式的抗震安全性和性能产生了直接、切实和直接的影响，许多人认为这种建筑形式在地震中是不必要的脆弱，并加速了创新技术和建筑实践的采用。在美国，钢结构构成了大多数工程建筑系统。这项研究将使钢结构建筑更经济，设计方法更可靠，并提高美国公司在全球经济中的竞争力。该项目汇集了美国、台湾和日本的专业工程师、研究人员，以及来自行业和监管机构的代表，以一种整合和协同的方式。一个咨询小组将协助进行合作和协调，以确保实际和有用的工程成果，并使工程专业人员迅速吸收这些成果。这项研究将通过面向教师和实践工程师培训的专业发展短期课程来增加多样性和国际合作，通过太平洋联盟LSAMP计划为美洲原住民本科生提供实习和研究机会，并为学前班到12年级的学生开发用于支撑系统地震反应教育和探索的材料。