Most of the earthquake damage is caused by the amplification due to local geological conditions of the seismic waves propagating from the bedrock. A simple and efficient way to characterize the geological conditions is the ...

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 ...

The most widely used model to perform the analysis of piles under lateral loads consists in modeling the pile as a series of beam elements and representing the soil as a group of unconnected, concentrated springs perpendicular ...

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 ...

Analyses were carried out to develop live load distribution factors for the seven most common US Army military vehicles on ninety steel multi-beam bridges. The bridges were analyzed by the finite element method (FEM) to ...

In this thesis, structural damage identification methods based on changes in the dynamic characteristics of the structure are examined and new methodologies are also developed. These are based on the modal curvature matrix, ...

En esta tesis se evaluó la efectividad de materiales viscoelásticos para disipar energía en edificios de acero mediante simulaciones numéricas con elementos finitos. El material se aplicó con tratamientos a cortante y ...

Esta tesis presenta el análisis dinámico y la evaluación sísmica de la represa de contrafuertes Guayabal ubicada en Juana Díaz, Puerto Rico para establecer conclusiones preliminares en cuanto a su integridad estructural ...