Comparison Study of Response Modification Factor for RC Structures with Shear Wall of Building in Thailand

Abstract

Reinforced concrete (RC) structures with shear wall are popular structural system on high-rise buildings in Thailand. Shear wall is a structural member used to resist lateral forces, especially seismic load. The Seismic resistant building design standard (DPT 1301/1302-61) has referenced any factor from foreign standards as a template for the preparation of this standard. In particular, the response modification factor (R) is an important factor in determining the base shear and internal forces of the design components. This research presents comparison study of response modification factor (R) for ordinary reinforced concrete shear
wall in standard. The R value in design standard (R = 5) is compared with the R value based on Uang’s method. From the study, the R values are 5.54 and 4.15 in X and Y-directions of building, respectively. The study of R value is lower than specified in the standard in Y-direction.