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Full-Text Articles in Engineering
Shaking Table Testing To Evaluate Effectiveness Of Prefabricated Vertical Drains For Liquefaction Mitigation, Caleb Robert Oakes
Shaking Table Testing To Evaluate Effectiveness Of Prefabricated Vertical Drains For Liquefaction Mitigation, Caleb Robert Oakes
Theses and Dissertations
This study was designed to evaluate the ability of vertical drains to prevent liquefaction and limit associated settlement. Drain performance was investigated using full-scale tests with vertical drains in liquefiable sand using a laminar shear box with acceleration time histories applied at the base. Performance of the sand box with drains in these tests was compared with performance of the sane box without drains in previous tests. The test data was also used to create case histories which can be used for further research and calibration of computer models. Although some investigations regarding vertical drains have been performed with centrifuge …
Development Of A Simplified Performance-Based Procedure For Assessment Of Liquefaction Triggering Using Liquefaction Loading Maps, Kristin Jane Ulmer
Development Of A Simplified Performance-Based Procedure For Assessment Of Liquefaction Triggering Using Liquefaction Loading Maps, Kristin Jane Ulmer
Theses and Dissertations
Seismically-induced liquefaction has been the cause of significant damage to infrastructure and is a serious concern in current civil engineering practice. Several methods are available for assessing the risk of liquefaction at a given site, each with its own strengths and limitations. One probabilistic method has been shown to provide more consistent estimates of liquefaction risk and can be tailored to the specific needs of a given project through hazard-targeted (i.e. based on return periods or likelihoods) results. This type of liquefaction assessment is typically called “performance-based,” after the Pacific Earthquake Engineering Research (PEER) Center's performance-based earthquake engineering framework. Unfortunately, …
Evaluation Of Empirical Prediction Methods For Liquefaction-Induced Lateral Spread From The 2010 Maule, Chile, MW 8.8 Earthquake In Port Coronel, Nicole D. Williams
Evaluation Of Empirical Prediction Methods For Liquefaction-Induced Lateral Spread From The 2010 Maule, Chile, MW 8.8 Earthquake In Port Coronel, Nicole D. Williams
Theses and Dissertations
Over the past several decades, empirical formulas have been developed and improved to predict liquefaction and lateral spread based on a database of case histories from observed earthquakes, such as Youd et al. (2002) and Rauch and Martin (2000). The 2010 Maule Chile earthquake is unique first of all because it is recent and was not used to develop recent liquefaction and lateral spread evaluation methods, and therefore can be reasonably used to evaluate the effectiveness of such equations. Additionally, the 8.8 magnitude megathrust event fills a significant gap in the databases used to develop these empirical formulas, which tends …
A Simplified Performance-Based Procedure For The Prediction Of Lateral Spread Displacements, Levi Thomas Ekstrom
A Simplified Performance-Based Procedure For The Prediction Of Lateral Spread Displacements, Levi Thomas Ekstrom
Theses and Dissertations
Characterization of the seismic hazard and ground-failure hazard of a site using traditional empirical lateral spread displacement models requires consideration of uncertainties in seismic loading, site conditions, and model prediction. Researchers have developed performance-based design methods to simultaneously account for these sources of uncertainty through the incorporation of a probabilistic analytical framework. While these methods can effectively handle the various sources of uncertainty associated with empirical lateral spread displacement prediction, they can be difficult for engineers to perform in a practical manner without the use of specialized numerical tools. To make the benefits of a performance-based approach accessible to a …