Abstract Buckling restrained braces (BRBs) represent an effective strategy for the seismic retrofit of existing steel moment resisting frames (MRFs), as they contribute to increasing strength and ductility capacity structure. However, current design strategies do not provide recommendations on how performance increase is achieved. Prioritising either or has impact damage evolution affects overa...

Conventional fiber-reinforced polymers (FRPs) have a relatively linear stress–strain behavior up to the failure point. Therefore, they show brittle until Shape memory alloys, in addition having high ductility and good energy dissipation capability, are highly resistant corrosion performance against fatigue. using SMA fibers production of FRPs can be suitable solution solve problem conventional ...

Propagation of seismic waves through soil deposits may considerably alter theircharacteristics at surface. This ultimately influences the performance structures.The are included in codes (e.g. Eurocode 8, EC8) by meansof proposed design response spectra for different classes used or retrofittingof structures. Nevertheless, a smooth spectrum cannot always representspectral an actual input motion...

Masonry infill walls are among the most vulnerable components of reinforced concrete (RC) frame structures. Recently, some techniques for enhancing performance infills have been proposed, aiming at improving both global and local behaviour infilled structure. Among promising ones, there those that aim to decouple or reduce infill-frame interaction by means flexible sliding joints, relying respe...

Abstract Nowadays, retrofitting-damaged buildings is an important challenge for engineers. Finding the optimal placement of Viscous Dampers (VDs) between adjacent structures prone to earthquake-induced pounding can help designers implement VDs with optimizing cost construction and achieving higher performance levels both structures. In this research, linear nonlinear 3-story, 5-story, 9-story S...

In the context of nonlinear finite element (FE) method, this paper presents a computational framework for ‘exact’ response sensitivity analysis of soil-structural interaction (SSI) systems based on the direct differentiation method (DDM). The DDM requires analytically differentiating the FE algorithm for the response computation with respect to material, geometry or loading parameters, involvin...

A proper composition of stiffness and ductility parameters is required to obtain a resistant and economic structure. Accordingly, Chevron Knee Braced Frame (CKBF) seems appropriate due to its proper seismic performance. The advantage of this system comes to having the capability of rapid and cheap replacement of chevron knee elements after an earthquake occurs. In this research, response modifi...

Fiber reinforced Polymers (FRP) have widely used for the purposes of enhances strength and ductility of concrete columns. Proper design of such hybrid columns, however, requires a better recognition of the behavior of concrete columns confined with FRP. In this paper, the influence of FRP thickness, concrete compressive strength, and column size on the performance of eccentrically loaded reacti...

Many recent research studies have focused on developing innovative seismic-resilient structural systems to reduce repair costs and downtime in the aftermath of an earthquake. In this regard, dealing with steel Moment Resisting Frames (MRFs), works demonstrated benefit deriving from adoption both low-damage self-centring column base connections, terms damage residual drifts reduction. Although s...