The occurrence of catastrophic earthquakes necessitates further researches in the structure engineering for retrofitting construction structures. In this paper, the application of the active control in the structures’ seismic response has been addressed. A single degree of freedom nonlinear structure has been studied. The nonlinear dynamic of the structure is considered in which, the nonlin...

Seismic upgrading and retrofitting of existing constructions is a pressing need for designers researchers. The necessity efficient seismic upgrading/retrofitting techniques is, therefore, required in seismic-prone countries, such as Italy. In this framework, steelwork has clearly shown many advantageous applications the last century. Nonetheless, if compared to other different technologies, sti...

The seismic vulnerability of existing RC framed buildings in seismic-prone areas requires affordable and practice-oriented solutions for their retrofitting. In this paper, the authors present a retrofitting solution based on combined use cross-laminated timber (CLT) panels asymmetric friction connections (AFCs). AFC connection is activated when force level reaches design threshold. energy dissi...

Seismic risk scenarios are obtained for an informal settlement in Mérida (Venezuela), which is representative of an important number of urban areas in earthquake-prone regions of the developing world. The vulnerability indices of the buildings range between 0.64 and 0.80 on a scale of 0 to 1. In an intensity IX earthquake scenario, more than 32% of the buildings would suffer damage of grade 4 (...

This paper describes an experimental program that deals with retrofitting of infill un-reinforced masonry walls (URM) with Fiber Reinforced Polymer (FRP). The primary objective of this research is to develop a retrofit strategy that while economical will minimize the influence of the retrofit on the overall performance of structural frames in predominant seismic regions. Allowing some damage to...

Traditional approaches for the seismic retrofit of existing buildings consider the following assumptions: (a) the building is not damaged after a minor earthquake, (b) the building is reparable after a moderate earthquake, and (c) the building will not have collapsed after a severe earthquake. In recent times, following several destructive earthquakes which have occurred in the past decades, th...

This article presents a distributed nondominated sorting genetic algorithm II (NSGA-II) for optimal seismic retrofit design using buckling restrained braces (BRBs) on a cluster of multi-core PCs. In the formulation, two conflicting objective functions of the initial BRB installation cost required for seismic retrofitting and damage cost that can be incurred by earthquakes expected during the li...