Career: Modeling and Analysis of Existing and Retrofitted RC Frames Subjected to Earthquakes

在过去的十年中，既有建筑物的抗震修复一直是一个重要的研究领域。然而，对现有建筑物的评估指导很少，除了案例研究或定性描述外，没有对改造设计提出具体建议。 为此，该计划的研究将集中在抗震评估和改造现有建筑物，特别是钢筋混凝土框架。 本研究项目的主要目标是评估现有钢筋混凝土框架的评估方法，并制定替代程序的评估和改造设计。 为实现这一目标，将对代表低、中、高地震风险地区现有建筑的选定钢筋混凝土框架建筑进行分析研究。 分析结果将尽可能与实测反应进行比较，并与建筑物评价的现行程序相联系。 根据这些结果，将提出对现有程序的修改建议，并开发替代方法。 调查将对联邦应急管理局（FEMA）发起的编写建筑物抗震修复指南（ATC-33）的工作产生直接影响。 所进行的研究将与教育部分相结合，重点是制定基础设施修复计划，涵盖比地震修复更广泛的问题。 此外，正在制定一项关于土木工程应用新材料的计划。 这些计划将通过研究，新课程的开发，以及涉及本科生和研究生参与的推广和课外活动来实施。 这是96年的职业奖。

Seismic rehabilitation of existing buildings has been a significant area of research during the last decade. However, very little guidance exists for the evaluation of existing buildings and, other than case studies or qualitative descriptions, there are no specific recommendations for the design of retrofits. To this end, the research under this program will focus on the seismic evaluation and retrofit existing buildings, in particular reinforced concrete frames. The main objective of this research project is to evaluate current methodologies for the evaluation of existing reinforced concrete frames and to develop alternate procedures for the evaluation and design of retrofits. This objective will be accomplished by conducting analytical studies of selected reinforced concrete frame buildings representative of existing construction in regions of low-to-moderate and high seismic risk. The results of the analysis will be compared with measured response when possible and will be correlated with current procedures for the evaluation of buildings. Based on these results, modifications to existing procedures will be proposed and alternate methodologies will be developed. The investigation will have a direct impact on the effort sponsored by the Federal Emergency Management Agency (FEMA) to prepare Guidelines for the Seismic Rehabilitation of Buildings (ATC-33). The research undertaken will be combined with an education component which focus as on the development of a program in infrastructure rehabilitation cover issues broader than the seismic rehabilitation alone. Also, a program on new materials for civil engineering applications being developed. These programs will be implemented through research, development of new courses, and outreach and extracurricular activities involving the participation of both undergraduate and graduate students. This is a FY 96 Career award.