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Title

DETERIORATION EFFECT OF HYSTERESIS LOOPS IN NONLINEAR STATIC ANALYSIS OF INTERMEDIATE AND SPECIAL STEEL MOMENT FRAMES

Pages

 Start Page 499 | End Page 510

Abstract

 FEMA440 proposed COEFFICIENT METHOD considers the effect of stiffness DEGRADATION and strength deterioration by C2 modification factor. This factor is obtained by SDOF oscillator responses with few degrading hysteresis behaviors. This paper studies the ability of COEFFICIENT METHOD to estimate displacement demands of MDOF buildings with mild and severe DEGRADATIONs. Performance of Intermediate and Special steel moment frames is compared separately by utilization of nonlinear static and dynamic analyses. Error values show a good correlation between nonlinear static and dynamic responses.

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