Performance-based earthquake engineering is focused in the definition of limits states to represent different levels of damage, which can be described by material strains, drifts, displacements or even changes in dissipating ...

Recent earthquakes have demonstrated the risk that reinforced concrete structures constructed before 1970 represent for society since these structures were designed with design codes in which the seismic provisions were ...

One dimensional ground response analyses was performed at fifteen sites in Mayagüez Puerto Rico to study their seismic response for the development of response spectra at the surface. Field experiments using the Spectral ...

This dissertation proposes a new semiactive device, composed of two fixedorifice viscous fluid dampers installed in the form of V whose top ends are attached to the upper floor and their lower ends to a point that can move ...

This investigation was requested by the staff of the Arecibo Observatory to determine whether the towers and cables that support the suspended platform are capable of resisting a maximum-credible earthquake in the elastic ...