AI Summary & Key Takeaways
AI InsightThis study shows that 3D effects have great significance to predict the actual capacity, failure mechanisms, and to evaluate the seismic performance. 3D nonlinear analysis provides higher and more accurate capacity evaluations.
📌 3 Key Takeaways
Abstract
The occurrences of the 1999 (Mw 7.4) Kocaeli and (Mw 7.1) Düzce earthquakes in Turkey once again demon-strate the behavioral importance of reinforced concrete (RC) shear-wall dominant structures that commonly built by using tunnel form technique. Reported non-damaged condition of these buildings in the aftermath of these two destructive urban earthquakes drew our attention to focus on performance of shear-wall dominant systems under earthquake forces. For that purpose, seismic behavior of these structures is investigated in details by performing inelastic three and two dimensional pushover analyses on a representative 5-story RC building model. The importance of 3D action in the structure'behavior because of slab-wall interaction, efficiency of transverse walls, effect of 2D and 3D modeling on the evaluation of capacity and demand relations, as well as damping effects are discussed. The 5-story building was modeled in a finite element domain considering material nonlinearity of steel and concrete including rotating and opening/closing crack capabilities. Performance of the model is determined by Capacity Spectrum Method (CSM). This study shows that 3D effects have great significance to predict the actual capacity, failure mechanisms, and to evaluate the seismic performance. 3D nonlinear analysis provides higher and more accurate capacity evaluations.