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。该奖项是NSF 09-524项目招标“小乔治·e·布朗地震工程模拟（NEES）研究网络（NEESR）”竞赛的结果，包括伊利诺伊大学厄巴纳-香槟分校（牵头机构）、夏威夷大学马诺阿分校（次级奖项）和纽约特洛伊的Ryan-Biggs协会（次级奖项）。该项目将利用伊利诺伊大学厄巴纳-香槟分校的NEES设备站点。这项研究将使一种新的建筑抗震设计技术成为可能，这种技术被称为混合砌筑。这个创新的概念是为了改善位于所有地震多发地区的中低层建筑的抗震性能，包括加利福尼亚，它依赖于附着在传统钢框架上的特殊钢筋混凝土砌块的结构作用。与周围钢框架的相互作用，以及新型的钢连接连接器，可以作为分散地震能量的保险丝，使其成为一个有前途的工程系统，以降低成本和对环境的影响来提高抗震性能。研究将结合大规模测试和最先进的计算模拟来识别和发现这种新系统的抗震性能。大型的两层混合砌体框架将在伊利诺斯州的NEES设备现场建造和测试。将在夏威夷大学进行一组补充的钢链连接器测试。通过与Ryan-Biggs Associates的合作，从业者互动被嵌入到研究计划中，Ryan-Biggs Associates目前正在设计采用这种新技术的建筑，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项目将与行业合作将研究成果转化为地震工程实践，以便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在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其他侧向载荷（如强风或爆炸）方面取得进展。该研究将推动结构测试技术的发展，因为所提出的测试规模和复杂性将为结构砌体研究设定新的规范。此外，模拟研究将在地震荷载作用下砌体及其与框架接触的力学建模方面树立新的标志。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一种适用于所有地震带的经济的建筑施工替代方案。这不仅可以减少建筑费用，而且在未来发生地震时，也可以减少损失、人员伤亡、企业中断等，因此对国民经济也会起到促进作用。”随着这项新技术的跨境转移，这项研究也将在国际上产生影响。此外，本研究将促进未来几代结构工程师的教学，使他们更熟练地掌握这种结构体系的工程，并通过让代表性不足的群体参与这一研究领域，扩大他们在工程中的参与。该项目的数据将存档，并通过NEES数据储存库向公众提供。

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.