Investigation of Operation of Link Beam Length in Nonlinear Dynamic Analysis of Steel Plate Shear Walls with Coupling with Rigid Joint

In recent years, Steel Plate Shear Wall system is used in tall buildings because of its advantages such as high initial stiffness and resistance, energy-dissipation capability and economic feasibility. Due to architectural requirements, using of big bays is usual and so if the usage of steel plate shear wall is needs in these bays; its couple type is used. The Steel Plate Shear Wall with Coupling (SPSW-WC) consist of a pair of planar spsws linked together with coupling beams at the floor levels. In this research, various frames (SPSW-WC) in 3, 10, 15 stories with rigid joint with three different length link beam 1.25, 2.5 and 3.75 meter which were proportioned to have a plastic section modulus 100% of the HBE (CB/HBE ratio) at each floor level and were put by using three acceleration mapping with nonlinear dynamic analysis and ABAQUS software and the performance of the walls and link beam in base shear, drift and DC (degree of coupling) were investigated. The results show that with reduction of link beam length in Steel Plate Shear Walls with Coupling system, base shear increase and drift and period of structure decrease, also the link beam length changing has different effects on coupling degree.