NEESR: Inertial Force-Limiting Floor Anchorage Systems for Seismic Resistant Building Structures

本研究项目的目标是推动创新的地板锚固系统的发展，以减少地震期间的惯性力，并在地震后保持地板的中心。这些新知识将通过分析和实验研究的结合产生，包括非线性瞬态动力分析，并使用两个George E. Brown地震工程模拟网络（NEES）设施提供的设备和工具：里海伊大学的大型结构和混合测试实验室和加州大学圣地亚哥分校的振动台测试。该项目将首先探索具有惯性力限制的楼板锚固系统的建筑结构动力行为的新知识。有了这些知识，该项目将为该系统确定适当的设计参数，以产生各种建筑几何形状和属性的最佳抗震性能。研究的最终目标将是为一个或多个候选结构产生可行的原型设计，这些结构可以用于将概念传播到实践中。该项目的数据将通过NEES项目仓库/数据储存库（网址：http://www.nees.org）存档并提供给公众。该项目是由亚利桑那大学、里海大学、加州大学圣地亚哥分校、罗马大学和两家地震设计公司的研究人员合作完成的。这一概念有可能产生更经济、更安全的抗震设计，并应用于各种建筑类型和建筑系统。这种系统的好处包括：(1)减少地震力；(2)结构侧移减小；(3)减少结构损伤；(4)减少非结构物和内容物损伤；(5)具有较高的抗倒塌安全系数。如果成功，这项研究可以改变结构设计的方式，通过修改对强烈地面运动的反应来抵抗地震，从而显著影响美国建筑业的成本效益。两家地震设计公司的实习工程师团队成员将促进研究成果有效地转化为实践。国际合作将促进与更广泛的地震工程界的交流。与亚利桑那州图森市的K-12社区合作的外展项目将使下一代学生了解减轻地震危害的重要性。该奖项是国家减少地震灾害计划（NEHRP）的一部分。

The objective of this research project is to advance knowledge toward the development of innovative floor anchorage systems that reduce inertial forces during earthquakes and maintain a centered floor afterward. This new knowledge will be generated through a combination of analytical and experimental research, including nonlinear transient dynamic analysis, and using the equipment and tools available at two George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) facilities: the large scale structural and hybrid testing laboratory at Lehigh University and shake table testing at the University of California, San Diego (UCSD). The project will first explore new knowledge of the dynamic behavior of building structures with inertial force-limiting floor anchorage systems. With this knowledge, the project will determine the appropriate design parameters for this system to produce optimal seismic performance for a variety of building geometries and properties. The ultimate goal of the research will be to produce a feasible prototype design for one or more candidate structures that can be used in dissemination of the concept to the practice. Data from the project will be archived and made available to the public through the NEES Project Warehouse/data repository, available at http://www.nees.org. This project is a collaborative effort among researchers from the University of Arizona, Lehigh University, UCSD, and Universita di Roma, La Sapienza, and practitioners from two seismic design firms.The concept has the potential for producing more economical and safer seismic designs with application to a wide array of construction types and building systems. The benefits of such a system include: (1) reduced seismic forces; (2) reduced structural lateral drift; (3) reduced structural damage; (4) reduced nonstructural and contents damage; and (5) a higher factor of safety against collapse. If successful, this research can transform the manner in which structures are designed to resist earthquakes by modifying the response to strong ground motion and thereby significantly impacting the cost-effectiveness of the U.S. construction industry. Effective transfer of research results into practice will be facilitated through team members who are practicing engineers at two seismic design firms. International collaboration will facilitate exchange with the broader earthquake engineering community. An outreach program with the K-12 community in Tucson, Arizona, will expose students in the next generation to the importance of earthquake hazard mitigation. This award is part of the National Earthquake Hazards Reduction Program (NEHRP).