I have recently graduated and joined a structural design firm, so kindly guide me, considering me a beginner. Secondly, it would be great if someone can recommend me a book or some good source to understand how to characterize building using performance levels. Any input concerning assignment of hinges to beams, columns and shear walls is highly appreciated. I would like to know what would be a better estimate for relative distances for plastic hinges in case of beams, columns. While assigning plastic hinges, I have an option of using ASCE 41-17 (Seismic Evaluation and Retrofit of Existing buildings". I will be using ETABS 2017 for performing Pushover Analysis. Until now, I have decided to go with "Displacement Co-efficient method". I'll be performing "Non-Linear Static Pushover Analysis" for my model. This also means that you can design the asymmetric channel sections with a horizontally shifted shear center under the general load.I am interested in performing "Performance Based Design" for a 20 story building. Therefore, members with any cross‑section can be analyzed by performing the cross‑section design. This calculation applies the standard requirement of EN 1993‑1‑1 5.2.2 (7) a. Image 01 - Stability Analysis of Channel Sections By comparing the elastic stress with the resulting stress of the new internal forces (N, V u, V v, M t,primary, M t,secondary, M u, M v, M ω) to the limit stress of the material, the calculation is finalized and provides the information about the load-bearing capacity. On the basis of these equivalent loads and the imperfection regarding the first mode shape of the equivalent structure, the program then determines the new forces on the deformed structure (geometrically nonlinear). For the selected sets of members, the cross‑section and stability analyses according to a standard are replaced by the torsional-flexural and lateral-torsional buckling analysis according to the second‑order theory, considering the application of imperfections with regard to mode shapes.Īs the calculation starts, the program automatically generates a new equivalent load based on the applied internal forces (for example, LC1 to LC10) for the extended calculation with seven degrees of freedom (u x, u y, u z, φ x, φ y, φ z, ω).
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