NSF East Asia and Pacific Summer Institute (EAPSI) for FY 2013 in China

这一行动资助了加州大学伯克利分校的Tea Visnjic于2013年夏天在上海同济大学开展了一个工程学研究项目，中国。该项目的题目是“高层建筑安装了减震装置的地震反应”。主办方是吕锡林教授和周应洲教授，该项目旨在评估高层钢筋混凝土框架结构安装阻尼器后的动力响应。阻尼器装置有助于减轻地震引起的建筑物移动，这可能会导致较小的破坏。高大的钢筋混凝土框架特别容易受到地震后高昂的修复费用和因维修而造成的长期居住中断的影响。在这些建筑中使用阻尼器可能能够显著提高抗震性能，但这种应用一直受到限制，部分原因是对高层混凝土框架在抗震应用中补充阻尼器的影响了解有限。由于高层钢筋混凝土框架建筑在中国和美国地震活跃地区都是常见的建筑，加深对这类体系的附加减震效应的了解对两国的设计实践都是有益的。这项计划中的研究量化了应用阻尼器对这些建筑的结构反应的影响，并确定了最有效地改善地震性能的阻尼器系统。EAPSI奖学金的广泛影响包括为研究员提供美国以外的第一手研究经验；对各自地点的科学、科学政策和科学基础设施的介绍；以及对社会、文化和语言的指导。这些活动符合NSF的目标，即在其科学家、工程师和教育工作者的职业生涯早期为国际合作进行教育，从而确保拥有一支具有全球意识的美国科学队伍。此外，两所大学的研究人员之间拟议的合作具有减少地震灾害的智力贡献记录，其动机是交流不同的想法、补充研究和过去地震的宝贵经验。这项研究为这两个机构之间未来的伙伴关系打开了大门，并有助于在保护人类生命和经济福祉免受自然灾害影响的努力中取得全球进展。

This action funds Tea Visnjic of University of California at Berkeley to conduct a research project in Engineering during the summer of 2013 at Tongji University in Shanghai, China. The project title is "Earthquake Response of Tall Buildings Equipped with Seismic Damper Devices." The host scientists are Prof. Xilin Lu and Prof. Ying Zhou.The project aims to assess the dynamic response of tall reinforced concrete frame-type buildings equipped with seismic dampers. Damper devices help mitigate earthquake-induced movement of buildings, which can potentially lead to smaller damage. Tall reinforced concrete frames are particularly vulnerable to high post-earthquake reparation costs and prolonged disruption of occupancy due to repairs. The use of damper devices in these buildings may be able to significantly improve seismic performance, but such applications have been limited partly due to limited understanding of the effects of supplemental damping in seismic applications to tall concrete frames. Because tall reinforced concrete frame buildings are commonly constructed in both China and the seismically active parts of the United States, an improved understanding of supplemental damping effects on seismic behavior of such systems is beneficial to design practices in both countries. The planned study quantifies the effects of damper application on structural response of these buildings and identifies damper systems that most effectively achieve improvements in earthquake performance.Broader impacts of an EAPSI fellowship include providing the Fellow a first-hand research experience outside the U.S.; an introduction to the science, science policy, and scientific infrastructure of the respective location; and an orientation to the society, culture and language. These activities meet the NSF goal to educate for international collaborations early in the career of its scientists, engineers, and educators, thus ensuring a globally aware U.S. scientific workforce. Furthermore, the proposed collaboration between researchers from the two universities with established records of intellectual contribution to seismic hazard reduction is motivated by the value in exchanging diverse ideas, complementing research and invaluable experience from past earthquakes. The study opens the door for future partnerships between the two institutions and contributes to global advancement in efforts to protect human life and economic well-being from natural disasters.