The use of Limit States (LRFD) Method in Unstiffened and Special Ductile Steel Shear Wall Analysis and Design with concentration on the Horizontal Boundary Element (HBE)

Steel plate shear wall (SPSW) is a lateral force resisting system that is not only applicable in newly designed structures, but also they are efficient systems in seismic retrofit of existing structures. This lateral force resistant system with individual specifications and performance is used in other to increase lateral resistance and stiffness to lateral forces especially earthquake. The main role of SPSW similar to the other lateral force resistant 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 mentioned force. Canada steel structures design codes (CAN/CSA S61-1602116and FEMA051offered criteria in design of structures in 2110. The provisions related to the design of these shear walls were added particularly to steel structures seismic design codes as AISC106-2115 in 2115. In this paper we will want 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 it is used limit states specifications (LRFD method) and the design of horizontal boundary elements specially is considered. The emphasis of this paper is to design and control one of the main elements of this system, including on a beam in one of the stories as a sample by using from limit states method (LSD) named LRFD provisions. From discussed topics it could be pointed out to these items: the calculation 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 plate shear walls ، special ductility ، limit state provisions ، web plate thickness ، diagonal tension field action ، vertical and horizontal boundary elements ، Inelastic deformations