Plastic energy based Seismic Assessment of Steel Frame Steel Shear Wall with Slits

Abstract:

In view of energy dissipation, the plastic energy based seismic assessment method of system is established. A calculation method of plastic energy dissipation of steel shear wall with slits (SSWS) is established by theoretical and finite element analysis, in which the flexural links are regarded as the basic energy dissipative components of SSWS. Based on the synergetic energy dissipative mechanism, an assessment method with the damage index considering property of ground motions is proposed. The theory is confirmed by the finite element parametric analysis, experimental results and the structural nonlinear dynamic analysis. Results indicate that the proposed calculation approach in consideration of the plastic energy of SSWS and the assessment method exhibits satisfying accuracy and it can be used to estimate the seismic behavior under given ground motion, demonstrating its rationality.

Key words:steel frame; steel shear wall with slits (SSWS); plastic energy dissipation; seismic performance; damage index