Assessing seismic performance of code-compliant steel special moment frames using ASCE 41-17

ASCE 41 standard, increasingly used by practitioners, is a desirable tool to evaluate the seismic performance of different types of structures according to the Performance-Based Earthquake Engineering framework. The latest edition of this standard (ASCE 41-17) has undergone significant changes with respect to its previous versions, which could substantially affect the results of structural performance evaluation. Within this context, the present study performs a comprehensive quantitative investigation of the seismic performance of steel structures based on the component-level Tier 3 systematic evaluation procedure of ASCE 41-17, using both nonlinear static (conventional and enhanced pushover analyses) and dynamic analyses. The evaluation is conducted on six ASCE 7 code-compliant steel special moment frames considering different heights (i.e., 6, 12, and 18 stories) and two versions of the seismic design code (i.e., ASCE 7-10 and-16). The results of the nonlinear dynamic procedure demonstrate that both the ASCE 7-10 and-16 designed buildings satisfy the acceptance criteria of ASCE 41-17. It is also shown that the linear dynamic procedure recommended by ASCE 41-17 to supplement the results of the nonlinear static procedure for buildings with significant higher modes effect cannot provide an accurate esti-mation of the structural performance compared to enhanced pushover procedures. Additionally, the comparison of the structural performance evaluation between the ASCE 41-13 and-17 indicated that the previous edition of this code (ASCE 41-13) is overly conservative for columns compared to ASCE 41-17. Finally, the applicability of using the modeling parameters recommended by ASCE 41 for simulating the elements' behavior in case of the lack of sufficient available experimental data is demonstrated.