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http://dx.doi.org/10.7734/COSEIK.2013.26.6.455

Seismic Performance Evaluation of RC Structure Strengthened by Steel Grid Shear Wall using Nonlinear Static Analysis  

Park, Jung Woo (R&D Center, UNISON eTech Co. Ltd.)
Lee, Jae Uk (R&D Center, UNISON eTech Co. Ltd.)
Park, Jin Young (R&D Center, UNISON eTech Co. Ltd.)
Lee, Young Hak (Department of Architectural Engineering, Kyung Hee University)
Kim, Heecheul (Department of Architectural Engineering, Kyung Hee University)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.26, no.6, 2013 , pp. 455-462 More about this Journal
Abstract
The effects of earthquakes can be devastating especially to existing structures that are not based on earthquake resistant design. This study proposes a steel grid shear wall that can provide a sufficient lateral resistance and can be used as a seismic retrofit method. The pushover analysis was performed on RC structure with and without the proposed steel grid shear wall. Obtain the performance point that the target structure for seismic loads applied to evaluate the response and performance levels. The capacity spectrum at performance point is nearly elastic range, so satisfied the performance objectives(LS level). And response modification factor(R factor) were calculated from the pushover analysis. The R factor approach is currently implemented to reflect inelastic ductile behavior of the structures and to reduce elastic spectral demands from earthquakes to the design level. The R factor increases from 2.17 to 3.25 was higher than the design criteria. As a result, according to reinforcement by steel grid shear wall, strength, stiffness, and ductility of the low-rise RC structure has been appropriately improved.
Keywords
seismic performance evaluation; steel grid shear wall; nonlinear static analysis; pushover analysis; performance point; response modification factor;
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Times Cited By KSCI : 2  (Citation Analysis)
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