Abstract
This study aims to estimate the lateral force resisting capacities of multi-story steel stud panel modular buildings. The lateral displacement of modular buildings composed of the rotation and slip deformation of joint and the shear deformation of stud-walls. The shear deformation of steel-stud walls with sheathing panels can be defined by combining several failure mechanisms according to the material properties of sheathing panels and connection detail. This study proposed the theoretical estimation of lateral force resisting capacities according to these procedures. In addition, a two-story modular structure made of steel stud-walls was tested under cyclic loading. The test result shows that the behavior of first story wall is governed by shear diaphragm action explained by equivalent bracing model. Finally this study suggests that lateral resistant behavior of multi story modular system can be explained by rigid body motion as well as shear diaphragm action, which is a characteristic behavior of modular building system caused by bolt connection between lower and upper unit modules.
