The design of structures to withstand seismic loading is primarily governed by horizontal ground motion, and the effects of vertical ground motion have long been deemed unimportant or secondary. However, an emerging body of evidence suggests that vertical ground motions have great destructive potential, especially for certain site conditions.
Using nonlinear dynamic analyses, the seismic performance of frames is evaluated by simultaneously applying the horizontal and vertical components of earthquake motion. Three special moment frames are subjected to 15 recorded near-field earthquake motions and the results of the analyses are used for performance evaluations, based on FEMA 350 guideline. It is found that, within the elastic range of response, considering the vertical component of ground motion, does not alter the dynamic structural response significantly, however, some tangible differences emerge in nonlinear range of response once the horizontal component of ground motion is accompanied by the vertical component.
The number of explosive attacks on civilian buildings has recently increased and the pattern of damage inflicted on structures when an explosion takes place remains quite difficult to predict. This paper performs a 3-dimensional dynamic response and damage analysis on steel frame structure, subjected to blast loads created by explosive devices. In this study, advantages of using polymer cables as a means of damage mitigation are investigated. Results from this study shows that synthetic fiber ropes as bracing for steel structures reduce the horizontal displacements of structure caused by air blast pressure. The contribution of fiber ropes in structural stability is also presented.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.