Evaluation of deformation capacity including yield deformation in displacement-based design of special RC shear wall

• Published in: The structural design of tall and special buildings Vol. 23; no. 3; pp. 181 - 209
• Main Authors: Kang, Su-Min, Kim, Jae-Yo
• Format: Journal Article
• Language: English
• Published: Oxford Blackwell Publishing Ltd 25.02.2014; Wiley Subscription Services, Inc
• Subjects: Deformation; deformation capacity; Displacement; displacement-based design; Glass transition temperature; Mathematical analysis; Reinforced concrete; Seismic design; Shear walls; special shear wall; Tall buildings; yield deformation
• ISSN: 1541-7794; 1541-7808
• DOI: 10.1002/tal.1030

SUMMARY A displacement‐based design scheme can be applied to the seismic designs of special reinforce concrete (RC) shear walls. However, the displacement‐based design in the current seismic design codes does not consider the contribution of yield deformation of RC shear walls. In this study, the evaluation method of the deformation capacity for seismic designs of RC shear walls was analyzed and applied to a parametric study for the lateral deformations of RC shear walls. From the results of analyses with various design conditions, the contribution of yield deformation to the deformation capacity of an RC shear wall was analyzed. It was demonstrated that, for RC shear walls in tall buildings, the yield deformation increased as the ratio of wall height to length increased and reached more than 50% of total deformation. Therefore, for the reasonable design of special RC shear walls in tall buildings, the design equation including the yield deformation in the displacement‐based design process is proposed. Copyright © 2012 John Wiley & Sons, Ltd.