CAREER: Seismic Behavior and Design of Non-Emulative Precast Concrete Buildings with Supplemental Passive Energy Dissipation

本研究计划的主要目的是研究在预制混凝土墙和框架建筑结构中使用辅助被动消能。 地震区预制混凝土结构的最大缺点是由于非弹性能量耗散小而导致侧向位移增加。 现在可以通过使用辅助被动能量耗散来减少这些位移。 本研究将对钢结构和整体现浇混凝土结构中使用辅助被动耗能进行基本的、综合的分析和试验研究，并对这些系统进行评估。本项目最终将为具有辅助被动耗能的预制混凝土结构制定抗震设计和分析指南，并提出建议。 教育计划的广泛目标是通过开发动态的，交互式的“虚拟实验室”模块，使用万维网（WWW），为混凝土结构和地震工程的本科生和研究生水平的教育提供一个更有效的环境。 这些模块将使用WWW的最新进展（如Java小程序）开发，以展示有关混凝土截面、构件和结构的抗震性能和设计的基本信息。 这些模块将允许学生配置系统参数（如几何形状、钢筋、混凝土约束、材料属性、荷载等）。并观察这些变化对行为的影响。 这些功能将允许学生交互配置和进行自己的例子，“如果”的研究，并在网络上的实验。 拟议的万维网模块将包括在线帮助以及关于这一主题的理论背景。这些模块将用于PI教授的三门课程，并将通过互联网供世界各地的其他教育机构和执业工程师使用。并将与专业团体和行业协会，如波特兰水泥协会（PCA）和预制/预应力混凝土研究所（PCI）。

The broad objective of the research program is to investigate the use of supplemental passive energy dissipation in precast concrete wall and frame building structures. The greatest disadvantage of precast concrete structures in seismic regions is an increase in lateral displacements as a result of small inelastic energy dissipation. It is now possible to reduce these displacements by using supplemental passive energy dissipation. This research will conduct a fundamental, integrated analytical and experimental investigation on the use of supplemental passive energy dissipation in steel and monolithic cast-in-place concrete structures and assessment of these systems.This project will ultimately develop seismic design and analysis guidelines and recommendations for precast concrete structures with supplemental passive energy dissipation. The broad objective of the education program is to provide a more effective environment for undergraduate and graduate level education in concrete structures and earthquake engineering by developing dynamic, interactive "virtual laboratory" modules using the World Wide Web (WWW). These modules will be developed using recent advancements in the WWW, such as Java applets, to demonstrate fundamental information on the seismic behavior and design of concrete sections, members, and structures. The modules will allow the students to configure the system parameters (such as geometry, reinforcement, concrete confinement, material properties, loading, etc.) and observe the effects of these changes on behavior. These capabilities will allow the students to interactively configure and conduct their own examples, " what if" studies, and experiments on the web. The proposed WWW modules will include on-line help as well as theoretical background on the subject matter.The modules will be used by three courses taught by the PI and will be available for use by other education institutions and practicing engineers throughout the world, through the internet, and will be conducted in collaboration with professional bodies and trade association such as the Portland Cement Association (PCA) and the Precast/Prestressed Concrete Institute (PCI).