In this study, constant-ductility optimization algorithm under a family of earthquake ground motions is utilized to achieve uniform damage distribution over the height of steel moment resisting frames (SMRFs). SMRF structures with stiffness-degrading hysteric behavior are modeled as single-bay generic frame in which the plastic hinge is confined only at the beam ends and the bottom of the first...

Lightweight steel framing is a method in housing and construction that have been widely used in lightweight steel construction. In this method, the structure is built by cold formed steel elements. They are cost-effective, light, and easy to assemble. However, the performance of lateral load resisting systems in cold-formed steel structures specially the behavior of cold-formed steel shear wall...

The objective of the current study is to develop a simple formula to estimate the fundamental vibration period of tall buildings for using in equivalent lateral force analysis specified in building codes. The method based on Sturm-Liouville differential equation is presented here for estimating the fundamental period of natural vibration. The resulting equation, based on the continuum represent...

The dynamic response of semi-rigid timber frames subjected to wind loads is investigated numerically in this paper. more than one million unique with different parameters was assessed the frequency-domain gust factor approach, which currently adopted by Eurocode 1, and time-domain generalized load method. In method, were simulated for three velocities five simulations per combination parameters...

One of the main components for developing regional seismic risk models is fragility functions common building types. Due to differences between national design codes, construction practices, and materials, it necessary develop specific types which are constructed in each region. For this reason, present study devoted filling essential gap Iran. Therefore, first step, existing country classified...

Reinforced concrete (RC) structural walls are widely used in high-rise structures earthquake-prone areas. Damaged by the earthquakes past decades, these buildings need retrofitting order to increase resilience of with shear walls. This study aimed investigate RC wall using energy dissipation devices. To this end, a total four 15, 20, 25, and 30 stories equipped as their lateral load-resisting s...

In control engineering and structural dynamics, mathematical models such as the state-space representation, equation of motion, phase plane are matrix equations describing system equilibrium. This paper develops novel for linear/nonlinear dynamic analysis reinforced concrete (RC) buildings with cantilever elements lateral load resisting systems (e.g., RC shear wall, core). The offer a new appro...

Progressive collapse starts when any load-carrying elements of the building during extreme loading, such as earthquakes, blasts, or fire. The Precast Steel Reinforced Concrete (PSRC) buildings comprise precast RCC columns and steel girders. These structural are connected to form a moment-resisting frame susceptible progressive collapse. However, this system has advantage inherent stiffness damp...

The objective of this paper is to investigate the seismic time history response single-story buildings with a wide range wall and roof diaphragm periods ductility. Current design specifications, e.g., ASCE 7-16, are transitioning from accounting for inelasticity in only vertical lateral force resisting systems, i.e., walls, including horizontal system, diaphragm. It not clear if can be consider...