Abstract
Main objective of the present study is to examine the practical method for evaluating the lateral stiffness of R/C framed shear walls which are irregularly provided into the low-rise R/C building frames. Summarizing the results of analysis; (1) Shear and flexural rigidities of the framed shear walls which are provided irregularly into the building frames are not widely affected by the pattern of arrangement of the shear walls and are approximately constant through the height of the whole building. And these rigidities are nearly determined by the current practial method. (2) Pattern of arrangement of shear walls has a large effect on the rotational deformation of those framed shear walls. (3) Rotational rigidity of the framed shear walls which is determined by considering the axial deformation of columns located under those shear walls has approximately a good agreement with those determined by the precise analysis. (4) Horizontal displacements, fundamental periods and modal participation functions of the low-rise building frames in which those framed shear walls are irregularly provided can be approximately evaluated by using the practical method for determining the lateral stiffness of the shear walls.
