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

在过去十年中，现有建筑物的地震修复一直是一个重要的研究领域。但是，对现有建筑物进行评价的指导很少，除了案例研究或质量描述外，对改造设计没有具体建议。为此，该项目的研究将侧重于现有建筑的抗震评估和改造，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现有评估方法，并制定评估和改造设计的替代程序。这一目标将通过对低、中、高地震风险地区现有建筑中具有代表性的选定钢筋混凝土框架建筑进行分析研究来实现。在可能的情况下，分析结果将与实测反应进行比较，并将与当前建筑物评价程序相关联。根据这些结果，将提出对现有程序的修改，并将拟订替代方法。这项调查将直接影响联邦紧急事务管理局（FEMA）为准备《建筑物抗震重建指南》（ATC-33）所做的努力。所进行的研究将与教育组成部分相结合，其重点是制定一项基础设施恢复方案，涵盖比地震恢复本身更广泛的问题。此外，正在开发土木工程应用的新材料计划。这些项目将通过研究、新课程的开发、本科生和研究生参与的外展和课外活动来实施。这是96年度的职业奖。

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.