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http://dx.doi.org/10.5000/EESK.2006.10.1.001

Comparisons of Numerical Analyses considering the Effects of Shear Strength Degradation For Nonseismic Designed RC Frame  

Lee, Young-Wook (군산대학교 건축공학과)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.10, no.1, 2006 , pp. 1-8 More about this Journal
Abstract
Nonseismic designed RC frame have a possibility of shear failure because of deficiencies of reinforcing details. To model the shear failure in numerical analysis, shear strength degradation models which Include Moehle's and ATC 40 are compared and applied to push-over analysis. For numerical analysis, three storied building frame is selected and designed according to Korean Concrete Design Code(2003). As results, It is shown that Moehle's shear strength degradation model estimates the shear strength lower than NZSEE model and has less variation than ATC 40 model and all the shear strengths of models are greater than the nominal shear strength of ACI 318. Also, from the numerical analysis, it is pointed out that there may be great difference in lateral drift capacity if a different shear strength model is used. And the capacity can be severely underestimated if the restraining model of plastic rotation of ATC 40 is used, compared to the use of shear spring model for shear degradation.
Keywords
nonseismic design; reinforced concrete frame; shear failure; strength degradation model; push-over analysis;
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