Hysteretic characteristics of medium- to low-rise RC structures controlled by both shear and flexure evaluated by FEA and pseudo-dynamic testing
- Authors
- Ju, Ju-Seong; Lee, Bok-Gi; Lee, Kang-Seok
- Issue Date
- Feb-2024
- Publisher
- 사단법인 한국계산역학회
- Keywords
- dual lateral force-resisting system; finite element analysis; flexure; pseudo-dynamic test; reinforced concrete; residual flexural strength; seismic performance; shear
- Citation
- Computers and Concrete, An International Journal, v.33, no.2, pp 217 - 240
- Pages
- 24
- Indexed
- SCIE
SCOPUS
- Journal Title
- Computers and Concrete, An International Journal
- Volume
- 33
- Number
- 2
- Start Page
- 217
- End Page
- 240
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/119002
- DOI
- 10.12989/cac.2024.33.2.217
- ISSN
- 1598-8198
1598-818x
- Abstract
- The purpose of this study is to propose new hysteretic characteristics of medium- to low-rise RC structures controlled by both shear and flexure. Through previous study, the dual lateral force -resisting system composed of shear and flexural failure members has a new failure mechanism that cooperates to enhance the flexural capacity of the flexural failure member even after the failure of the shear member, and the existing theoretical equation significantly underestimates the ultimate strength. In this study, the residual lateral strength mechanism of the dual lateral force -resisting system was analyzed, and, as a result, an equation for estimating the residual flexural strength of each shear -failure member was proposed. The residual flexural strength of each shear -failure member was verified in comparison with the structural testing results obtained in previous study, and the proposed residual flexural strength equation for shear -failure members was tested for reliability using FEA, and its applicable range was also determined. In addition, restoring -force characteristics for evaluating the seismic performance of the dual lateral force -resisting system (nonlinear dynamic analysis), reflecting the proposed residual flexural strength equation, were proposed. Finally, the validity of the restoring -force characteristics of RC buildings equipped with the dual lateral force -resisting system proposed in the present study was verified by performing pseudo -dynamic testing and nonlinear dynamic analysis based on the proposed restoring -force characteristics. Based on this comparative analysis, the applicability of the proposed restoring -force characteristics was verified.
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