The usage of Limit States Method in Unstiffened Steel Plate Shear Wall analysis and design with Special Ductility with concentration on horizontal and vertical boundary elements

Steel plate shear wall (SPSW) is a lateral force resisting system that is not only applicable in the construction of buildings which are designed from the outset, but also they are efficient systems in seismic retrofit of the existing structures. This lateral resisting system with individual specifications and performance is used in order to increase lateral resistance and stiffness against lateral forces especially earthquake. The main role of SPSW similar to the other lateral resisting systems is to supply the strength and stability against shear forces that are produced in stories because of the earthquake and they resist against overturning moment that is produced from the mentioned force. Canada steel structures design codes (CAN/CSA S16-01/2001and FEMA450) offered criteria in design of the structures in 2004. The provisions related to the design of these shear walls were added particularly to steel structures seismic design codes as AISC341-2005 in 2005. In this paper we target to analyze, calculate, design and evaluate a 9 stories steel structure that has special steel plate shear walls, i.e. SPSW with special ductility and we use limit states specifications (LRFD method) while the design of horizontal and vertical boundary elements is specially considered. The emphasis of this paper is to design and control one of the main elements of this system including on beam in one of the stories as a sample by using from limit states method (LSD) named LRFD provisions. This paper consists of: the calculation of bending moment due to uniform load and two centralized axial forces, strength, reduced bending strength, compact control, shear control and bending moment, and axial force interaction control for HBE.

کلیدواژه ها:

unstiffened special steel plate shear walls ، special ductility ، limit state provisions ، web plate thickness ، diagonal tension field action ، vertical and horizontal boundary elements ، inelastic deformations