NEESR-SG: Performance-Based Design and Real-time Large-scale Testing to Enable Implementation of Advanced Damping Systems

这个奖项是一个结果的NSF 08-519计划征求乔治E。布朗一行地震工程模拟网络（NEES）研究（NEESR）竞赛，包括普渡大学（牵头机构）、利哈伊大学（副奖）、伊利诺伊大学香槟分校（副奖）、纽约市城市大学学院（副奖）和康涅狄格大学（副奖）。该项目将利用利哈伊大学的NEES设备场地。 先进的阻尼系统已经证明了减轻地震灾害的巨大希望。使用这些多功能装置的结构对严重载荷条件的适应性预计将促进实现基于性能的结构设计能力的重大进步。然而，由于缺乏适当的设计程序和足够的测试方法来验证这些系统，这种创新系统在实践中的应用缓慢。这项技术的有效实施将需要建立和验证基于性能的设计方法，最好地利用其独特的阻尼能力。大型结构的拟动力试验是进行结构模型验证和性能评估的最佳方法。然而，当这些阻尼器被集成到一个结构系统中，他们表现出几种类型的复杂的行为，不能充分再现低于实时。最近开发的实时混合测试方法允许关于可以被测试的结构和系统的类型的更大的能力。这些方法需要验证复杂的结构系统。 这些是进行集中于装备有这种阻尼装置的结构的大规模测试的综合研究的令人信服的理由，以：i）证明采用先进阻尼装置的结构系统的典型的基于性能的设计方法; ii）验证用于新阻尼系统的验证和验收的适当的大规模测试技术; iii）验证本课程中用于大型结构系统的新型实时PSD测试方法; iv）对从业者和学生进行这些技术的教育，从而在美国实现先进的阻尼系统。 磁流变液装置，一个特别有前途的阻尼系统，将用于实验，以利用先前的资金。通过正确的使用，这些设备还可以模拟各种被动阻尼系统，为未来的研究人员建立试验平台。 该项目将导致开发适当的基于性能的设计程序和先进阻尼系统的仿真能力，以及验证此类阻尼技术在土木工程应用中的应用，实现NEES背后的基本愿景。成功验证用于大型复杂结构的有效实时PSD测试方法将打破目前阻止大规模验证此类创新系统的障碍，并将使整个NEES的实时PSD测试成为可能，从而有可能对比以往任何时候都更复杂的结构进行复杂的测试。 与欧洲，日本和中国的研究人员建立了国际合作伙伴关系，以利用相关专业知识，并加强这一综合研究和教育计划的影响。工业合作者将提供实践工程社区的观点和需求。教育和技术转让计划的重点是针对各级不同的受众，包括：通过研究，课程模块和测试程序和设备培训的研究生和本科生;通过现有的合作伙伴关系的区域K-12学生;以及通过NEES网络研讨会的实践工程师。为了进一步增加代表性不足的学生在这些研究和教育机会的参与，纽约城市学院（一个少数民族机构，西班牙裔服务机构和LSAMP成员）是这一努力的所有方面的合作伙伴。该项目网站将为感兴趣的研究人员、执业工程师和学生提供教育成果和信息。NEES工具和能力将在进行实验、项目执行以及数据存档和共享方面发挥不可或缺的作用。该项目的数据将通过NEES数据储存库（http：//www.example.com）提供。www.nees.org

This award is an outcome of the NSF 08-519 program solicitation George E. Brown Jr. Network for Earthquake Engineering Simulation (NEES) Research (NEESR) competition and includes Purdue University (lead institution), Lehigh University (subaward), the University of Illinois Champaign-Urbana (subaward), City University of New York City College (subaward), and the University of Connecticut (subaward). This project will utilize the NEES equipment site at Lehigh University. Advanced damping systems have demonstrated great promise for seismic hazard mitigation. The adaptability of structures using these versatile devices to severe loading conditions is expected to facilitate major advances in the ability to achieve performance-based design of structures. However, such innovative systems have been slow to be used in practice due to a lack of appropriate design procedures and adequate testing methods to validate these systems. Effective implementation of this technology will require establishing and validating performance-based design methodologies that best exploit their unique damping capabilities. Large-scale testing for model validation and performance assessment can best be achieved through pseudo dynamic (PSD) test methods on large scale structures. However, when these dampers are integrated into a structural system, they exhibit several types of complex behaviors that cannot adequately be reproduced at less than real-time. Recently developed real-time hybrid testing methods allow greater abilities regarding the types of structures and systems that can be tested. These methods need to be validated for complex structural systems. These are compelling reasons for conducting an integrated study focusing on large-scale testing of structures equipped with such damping devices to: i) demonstrate a typical performance-based design methodology for a structural system employing advanced damping devices; ii) validate an appropriate large-scale testing technique for validation and acceptance of new damping systems; iii) validate novel real-time PSD testing methodologies for large-scale structural systems in this class; and iv) educate practitioners and students on these technologies, enabling implementation of advanced damping systems in the United States. Magnetorheological fluid devices, a particularly promising damping system, will be used in the experiments to leverage prior funding. With proper use, these devices can also mimic a wide variety of passive damping systems, allowing for establishment of a testbed for future researchers. This project will result in the development of appropriate performance-based design procedures and simulation capabilities regarding advanced damping systems, as well as validation of such damping technologies for civil engineering applications, realizing the fundamental vision behind NEES. The successful validation of an effective real-time PSD testing method for large-scale, complex structures will break down the barriers currently preventing the validation of such innovative systems at large-scale, and will enable real-time PSD testing throughout NEES, leading to the possibility of sophisticated testing of more complex structures than have ever been tested before. International partnerships with researchers in Europe, Japan and China are established to draw upon relevant expertise and to enhance the impact of this integrated research and education program. Industrial collaborators will provide the perspective of and needs for the practicing engineering community. Education and technology transfer plans are focused on targeting a diverse audience at all levels including: graduate and undergraduate students through research, course modules, and training on testing procedures and equipment; regional K-12 students through existing partnerships; and practicing engineers through a NEES webinar. To further increase the participation of underrepresented students in these research and educational opportunities, City College of New York (a minority institution, a Hispanic serving institution and LSAMP member) is a partner in all aspects of this effort. The project website will house educational outcomes and information for interested researchers, practicing engineers and students. NEES tools and capabilities will play an integral role in conducting the experiments, project execution, and archiving and sharing the data. Data from this project will be made available through the NEES data repository (http://www.nees.org).