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Evaluation of structural damage identification methods based on dynamic characteristics
(2005)
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, ...
Ground response spectra at surface for Mayagüez considering in-situ soil dynamic properties
(2005)
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 ...
Análisis dinámico y evaluación sísmica de la represa de contrafuertes Guayabal
(2008-11)
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 ...
Dynamic lateral response of single piles considering soil inertia contribution
(2007-05)
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 ...
Amortiguamiento en estructuras de acero utilizando materiales viscoelásticos
(2007)
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 ...
Periodos fundamentales de sitio utilizando microtemblores: comparación con otros métodos y aplicación a Mayagüez, Puerto Rico
(2009-11)
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 ...
Dynamic properties and seismic response of the cable structures and towers of the Arecibo Observatory
(2006-05)
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 ...
Recommendations of bridge distribution factors for military vehicles on steel beam bridges
(2007)
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 ...
A variable damping semiactive device for control of the seismic response of buildings
(2005)
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 ...