Steel Special Moment Frames (SMFs) are favored seismic force-resisting systems due to their architectural flexibility and high ductility. While shallow columns (section depth less than 356 mm) were commonly used in these before the Northridge earthquake, deeper greater have become more popular recent years meet code-enforced story drift requirements economically. However, limited research exist...

This study presents a novel method for accurately predicting the dynamic behavior of multistory frame buildings under earthquake ground motion. The proposed allows approximately estimating inter-story drift ratio, crucial parameter strongly associated with building damage, its distribution along height, and maximum value location. An equivalent continuous beam model rotation at base, consisting...

In design steel frames, combining semi-rigid and rigid connections can result in better structural performance, particularly seismic locations. this study, the effects of beam-to-column located on performance frame structures are investigated. The analysis uses six twelve-story moment resisting frames (MRSF) with rigid, semi-rigid, dual beam-column connections. These designed according to Egypt...

Hybrid control system composed of a base isolation system and a magneto-rheological damper so-called smart base isolation is one of effective semi-active control system in controlling the seismic response of structures. In this paper, a design method is proposed for designing the smart base isolation system in order to achieve an effective performance under multiple earthquakes. The base mass, ...

Since the appearance of first modern multistories buildings, besides demand ensuring bearing capacity, one urgent problems facing engineer is to do how design structure ensure requirements normal use such as displacement, motion acceleration within permissible limits. There exist many methods reduce these response under lateral load. Among these, using fluid viscous damper (FVD) most applied eq...

The Topy system automates real-time story tracking by utilizing crowdsourced tagging on social media platforms. Topy employs a state-of-the-art Twitter hashtag recommender to continuously annotate news articles with hashtags, a rich meta-data source that allows connecting articles under drastically different timelines than typical keyword based story tracking systems. Employing social tags for ...

To study the design method of sectional area and initial tension of wire rope brace of the prestressed braced steel moment frame structure system, theoretical analysis of this structure system is conducted in this paper. The lateral stiffness formula is derived. It reveals the lateral stiffness is related to the lateral stiffness of bare steel moment frame, story height, the distance between co...

In this paper, optimal design of hybrid low damping base isolation and magnetorheological (MR) damper has been studied. Optimal hybrid base isolation system has been designed to minimize the maximum base drift of low damping base isolation system where for solving the optimization problem, genetic algorithm (GA) has been used. In design procedure the maximum acceleration of the structure has ...