Title: Rehabilitation of Reinforced Concrete Structures--The Integration of Experimental Results and Analytical Models
Author(s): J. A. Pincheira, R. M. Jordan, M. E. Kreger, and J. O. Jirsa
Publication: Symposium Paper
Appears on pages(s): 177-214
Keywords: dynamic characteristics; earthquake-resistant structures; frames; infilled frames; models; reinforced concrete; Design
Research on rehabilitation of nonductile reinforced concrete structures located in zones of high seismic risk has been underway at the University of Texas at Austin since 1981. A sampling of details and results from selected experimental programs investigating repair and strengthening of reinforced concrete nonductile frame buildings is presented. Researchers at the University of Texas have integrated knowledge about the behavior of nonductile elements and systems, retrofitted members, subassemblages, and superassemblages into nonlinear time-history analysis models. These models have been used to investigate the response of buildings, retrofitted with techniques studied in the laboratory, to a variety of strong-motion earthquake records. An overview of some of the analytical modeling is presented; results from two studies investigating the use of different concentric bracing schemes or infill wall systems to retrofit a three-story nonductile frame building are discussed.