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A Study on the Methods of Enhancing the Seismic Performance for Reinforced Concrete School Buildings - Ordinary Moment Frame  

Kim, Hyeon-Jin (Department of Architectural Engineering, Dankook University)
Lee, Sang-Hyun (Department of Architectural Engineering, Dankook University)
Publication Information
Journal of the Korean Society of Safety / v.24, no.4, 2009 , pp. 74-81 More about this Journal
Abstract
In this study, the seismic performance of RC school buildings which were not designed according to earthquake-resistance design code were evaluated by using response spectrum and push-over analyses. The torsional amplification effect due to plan irregularity is considered and then the efficiency of seismic retrofitting methods such as RC shear wall, steel frame, RC frame and PC wing wall was investigated. The analysis result indicate that the inter-story drift concentrated in the first floor and most plastic hinge forms at the column of the first story. Among the retrofitting methods, the PC wing wall has the highest seismic performance in strength and story drift aspect. Especially, it can make building ductile behavior due to the concentrated inter-story drift at the first column hinge is distributed overall stories. The axial force, shear force and moment magnitude of existing elements significantly decreased after retrofitting. However, the axial and shear force of the elements connected to the additional retrofitting elements increased, and especially the boundary columns at the end of the retrofitting shear wall should be reinforced for assuring the enhancement of seismic performance.
Keywords
seismic performance; RC school buildings; seismic retrofit; plan irregularity; torsional amplification;
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