NEESR-CR: Hybrid Masonry Seismic Structural Systems

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。小布朗地震工程模拟网络（NEES）研究（NEESR）”的竞争，包括伊利诺伊大学厄巴纳-香槟分校（牵头机构）和夏威夷大学马诺阿分校（副奖）和瑞安比格斯协会特洛伊，纽约（副奖）。该项目将利用伊利诺伊大学厄巴纳-香槟分校的NEES设备场地。该研究将为建筑物的抗震设计提供一种新技术，称为混合砌体。这一创新概念旨在改善所有地震多发地区（包括加州）中低层建筑的抗震性能，它依赖于连接到传统钢框架上的特殊钢筋混凝土砌体板的结构作用。与周围钢框架的相互作用，以及可以设计为在消散地震能量中充当保险丝的新型钢连接件，使其成为一种有前途的工程系统，用于以降低的成本和对环境的影响来增强抗震性能。研究将结合联合收割机大规模测试与最先进的计算模拟，以确定和发现这种新系统的抗震性能。大型，两层混合砌体框架将建造和测试在NEES设备在伊利诺伊州的网站。 将在夏威夷大学进行一套补充的钢连杆连接器试验。 通过与Ryan-Biggs Associates的合作，实践者的互动被嵌入到研究计划中，Ryan-Biggs Associates目前正在使用这种新技术设计建筑物，并领导研讨会，向其他工程师传授这种创新系统。 一个明确的技术转移计划与行业合作伙伴关系将转化为地震工程实践的研究成果，使建筑业主可以从这项研究中受益。这项研究的智力价值将包括发现和理解混合砌体建筑如何应对不同强度的地震运动以及强风或爆炸等其他横向载荷。这项研究将推进结构测试的艺术，因为拟议的测试的规模和复杂性将为结构砌体研究设定一个新的规范。 此外，模拟研究将在模拟地震荷载下砌体及其与框架接触的力学方面树立新的标志，就更广泛的影响而言，这项研究将为建筑开发商和承包商提供适用于所有地震区的经济的建筑施工选择。它将提高国民经济，因为建筑物的建造成本将降低，未来发生地震后，损失、生命损失或业务中断将减少。 这项研究也将产生国际影响，因为这项新颖的新技术正在跨境转移。此外，这项研究将促进未来几代结构工程师的教学，使他们更擅长这种结构系统的工程，并通过让他们参与这一研究领域来扩大代表性不足的群体在工程中的参与。该项目的数据将通过NEES数据库存档并向公众提供。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).This award is an outcome of the NSF 09-524 program solicitation "George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) Research (NEESR)" competition and includes the University of Illinois at Urbana-Champaign (lead institution) and the University of Hawaii at Manoa (subaward) and Ryan-Biggs Associates of Troy, New York (subaward). This project will utilize the NEES equipment site at the University of Illinois at Urbana-Champaign.The research will enable a new technology for earthquake resistant design of buildings, known as hybrid masonry. This innovative concept for improved seismic performance of low to mid-rise buildings located in all earthquake prone areas, including California, relies on the structural action of special reinforced concrete masonry panels that are attached to a conventional steel frame. Interactions with the surrounding steel frame, and novel steel link connectors that can be designed to act as fuses in dissipating seismic energy, make this a promising engineered system for enhancing seismic performance at a reduced cost and impact on the environment. Research will combine large-scale testing with state of the art computational simulation to identify and discover the seismic performance of this new system. Large-scale, two-story hybrid masonry frames will be constructed and tested at the NEES equipment site at Illinois. A complementary set of steel link connector tests will be done at the University of Hawaii. Practitioner interaction is embedded into the research plan through a partnership with Ryan-Biggs Associates, who are currently designing buildings with this new technology and leading seminars to teach other engineers about this innovative system. A well defined technology transfer program with industry partnership will transform research results to earthquake engineering practice so that building owners may benefit from this research. The intellectual merit of the research will include advancements in discovery and understanding of how buildings constructed with hybrid masonry respond to earthquake motions of varying intensities as well as other lateral loadings such as strong winds or blast. The research will advance the art in structural testing since the scale and complexity of the proposed tests will set a new norm for structural masonry research. In addition, the simulation study will set a new mark in modeling mechanics of masonry and its contact with a frame under seismic loadings.With respect to broader impacts, this research will provide building developers and contractors with an economical alternative for building construction applicable to all seismic zones. It will enhance the national economy since building construction will be less expensive, and following earthquakes of the future, less damage, loss of life or business interruptions will occur. The research will also have an impact internationally as this novel new technology is transferred across borders. Moreover, this research will promote teaching of future generations of structural engineers to become more adept at engineering of such structural systems, and broaden participation of underrepresented groups in engineering by engaging them in this research field. Data from this project will be archived and made available to the public through the NEES data repository.