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Geotechnical Engineering

2010

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Articles 1 - 30 of 435

Full-Text Articles in Civil and Environmental Engineering

Effects Of Warm-Mix Asphalt Additives On Asphalt Mixture Characteristics And Pavement Performance, Jun Zhang Dec 2010

Effects Of Warm-Mix Asphalt Additives On Asphalt Mixture Characteristics And Pavement Performance, Jun Zhang

Department of Civil and Environmental Engineering: Dissertations, Theses, and Student Research

The primary objective of this research is to evaluate the feasibility of several WMA mixtures as potential asphalt paving mixtures for Nebraska pavements. To that end, three well-known WMA additives (i.e., Sasobit, Evotherm, and Advera synthetic zeolite) were evaluated. For a more realistic evaluation of the WMA approaches, trial pavement sections of the WMA mixtures and their HMA counterparts were implemented in Antelope County, Nebraska. More than one ton of field-mixed loose mixtures were collected at the time of paving and were transported to the NDOR and UNL laboratories to conduct comprehensive laboratory evaluations and pavement performance predictions of the …


Seismic Analysis Of Integral Abutment Bridges Considering Soil Structure Interaction, Reza Vasheghani Farahani Dec 2010

Seismic Analysis Of Integral Abutment Bridges Considering Soil Structure Interaction, Reza Vasheghani Farahani

Masters Theses

Integral abutment bridges are jointless bridges in which the deck is continuous and connected monolithically with the abutment walls supported typically by a single row of piles. This thesis focuses on the effects of two major parameters on the seismic behavior of an integral abutment bridge in Tennessee by considering soil-structure interaction around the piles and in back of the abutments: (1) clay stiffness (medium vs. hard) around the piles, and (2) level of sand compaction (loose vs. dense) of the abutment wall backfilling. Modal and nonlinear time history analyses are performed on a three dimensional detailed bridge model using …


An Exploratory Survey Of Drivers’ Knowledge Of Right Of Way At Freeway On-Ramp Merging Areas, Deogratias Eustace, Stephen Owusu-Ansah, Vamsi Krishna Indupuru Nov 2010

An Exploratory Survey Of Drivers’ Knowledge Of Right Of Way At Freeway On-Ramp Merging Areas, Deogratias Eustace, Stephen Owusu-Ansah, Vamsi Krishna Indupuru

Civil and Environmental Engineering and Engineering Mechanics Faculty Publications

Motor vehicle crashes are one of the leading causes of death in the United States. The most recent data available show that in 2006 there were almost 6 million police-reported motor vehicle crashes in the United States where a total of 42,642 people were killed and an additional 2.6 million were injured. The majority of these motor vehicle crashes occurred at intersections or within the intersection influence areas. Traffic conflicts occur at intersections due to traffic streams moving in different directions interfering with each other, and as a result they become areas with high potential for traffic crashes compared with …


Peat Improvement Under Vacuum Preloading:A Novel Approach For Bog Roads In Ireland, Juan Pablo Osorio, Eric R. Farrell, Brendan C. O'Kelly Sep 2010

Peat Improvement Under Vacuum Preloading:A Novel Approach For Bog Roads In Ireland, Juan Pablo Osorio, Eric R. Farrell, Brendan C. O'Kelly

Conference papers

This paper presents the preliminary findings of a TCD/NRA vacuum preloading field trial that is part of a research project into the construction options for improving rampart roads. Vacuum preloading is a construction method used to accelerate settlement and the increase shear strength by applying a vacuum pressure to the ground by means of prefabricated vertical drains, an impervious tight sheet and a vacuum pump. Consolidating the ground by applying a vacuum load has several advantages over other techniques, for example; no fill material is required; construction periods are generally shorter; and there is no need for chemical admixtures. This …


Development Of Streamflow Projections Under Changing Climate Conditions Over Colorado River Basin Headwaters, W. P. Miller, Thomas C. Piechota, S. Gangopadhyay, T. Pruitt Aug 2010

Development Of Streamflow Projections Under Changing Climate Conditions Over Colorado River Basin Headwaters, W. P. Miller, Thomas C. Piechota, S. Gangopadhyay, T. Pruitt

Civil and Environmental Engineering and Construction Faculty Research

The current drought over the Colorado River Basin has raised concerns that the US Department of the Interior, Bureau of Reclamation (Reclamation) may impose water shortages over the lower portion of the basin for the first time in history. The guidelines that determine levels of shortage are affected by forecasts determined by the Colorado Basin River Forecast Center (CBRFC). While these forecasts by the CBRFC are useful, water managers within the basin are interested in long-term projections of streamflow, particularly under changing climate conditions. In this study, a bias-corrected, statistically downscaled dataset of projected climate is used to force a …


A Life Cycle Cost Analysis Of Large-Scale Thermal Energy Storage Technologies For Buildings Using Combined Heat And Power, Kenneth Gaine, Aidan Duffy Jul 2010

A Life Cycle Cost Analysis Of Large-Scale Thermal Energy Storage Technologies For Buildings Using Combined Heat And Power, Kenneth Gaine, Aidan Duffy

Conference Papers

Buildings account for approximately 40% of energy consumption and greenhouse gas (GHG) emissions in developed economies, of which approximately 55% of building energy is used for heating and cooling. The reduction of building-related GHG emissions is a high international policy priority. For this reason and because there are many technical solutions for this, these polices should involve significant improvements in the uptake of small-scale energy efficient (EE) systems. However the widespread deployment of many technologies, must overcome a number of barriers, one of which is a temporal (diurnal or seasonal) mismatch between supply and demand. Costeffective thermal storage solutions have …


Scale Model Shake Table Testing Of Underground Structures In Soft Clay, Victor A. Crosariol Jun 2010

Scale Model Shake Table Testing Of Underground Structures In Soft Clay, Victor A. Crosariol

Master's Theses

Underground structures perform an important role in transportation systems in many seismically active regions around the world, but empirical data regarding the seismic behavior of these structures is limited. This research works towards filling that empirical gap through the use of scale model shake table testing. Underground seismic soil-structure interaction (USSSI) effects were investigated for a stiff rectangular tunnel cross-section embedded within soft clay. San Francisco Young Bay Mud was used as a prototype soil for developing a scale model soil mixture consisting of kaolinite, bentonite, class C fly ash, and water. A single cell Bay Area Rapid Transit (BART) …


Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984), Multiple Authors May 2010

Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984), Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.


Past Proceedings: Second International Conference On Case Histories In Geotechnical Engineering (1988), Multiple Authors May 2010

Past Proceedings: Second International Conference On Case Histories In Geotechnical Engineering (1988), Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.


Past Proceedings: Third International Conference On Case Histories In Geotechnical Engineering (1993), Multiple Authors May 2010

Past Proceedings: Third International Conference On Case Histories In Geotechnical Engineering (1993), Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.


Past Proceedings: Fourth International Conference On Case Histories In Geotechnical Engineering (1998), Multiple Authors May 2010

Past Proceedings: Fourth International Conference On Case Histories In Geotechnical Engineering (1998), Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.


Past Proceedings: Fifth International Conference On Case Histories In Geotechnical Engineering (2004), Multiple Authors May 2010

Past Proceedings: Fifth International Conference On Case Histories In Geotechnical Engineering (2004), Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.


Past Proceedings: Sixth International Conference On Case Histories In Geotechnical Engineering (2008), Multiple Authors May 2010

Past Proceedings: Sixth International Conference On Case Histories In Geotechnical Engineering (2008), Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.


Past Proceedings: Second International Conference On Recent Advances In Geotechnical Earthquake Engineering And Soil Dynamics (1991), Multiple Authors May 2010

Past Proceedings: Second International Conference On Recent Advances In Geotechnical Earthquake Engineering And Soil Dynamics (1991), Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.


Past Proceedings: Third International Conference On Recent Advances In Geotechnical Earthquake Engineering And Soil Dynamics (1995), Multiple Authors May 2010

Past Proceedings: Third International Conference On Recent Advances In Geotechnical Earthquake Engineering And Soil Dynamics (1995), Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.


Past Proceedings: Fourth International Conference On Recent Advances In Geotechnical Earthquake Engineering And Soil Dynamics (2001), Multiple Authors May 2010

Past Proceedings: Fourth International Conference On Recent Advances In Geotechnical Earthquake Engineering And Soil Dynamics (2001), Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.


Past Proceedings: Fifth International Conference On Recent Advances In Geotechnical Earthquake Engineering And Soil Dynamics (2010), Multiple Authors May 2010

Past Proceedings: Fifth International Conference On Recent Advances In Geotechnical Earthquake Engineering And Soil Dynamics (2010), Multiple Authors

International Conference on Case Histories in Geotechnical Engineering

No abstract provided.


Preface, Shamsher Prakash May 2010

Preface, Shamsher Prakash

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


Conference Schedule, Multiple Authors May 2010

Conference Schedule, Multiple Authors

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


General Report — Session 1, Pedro De Alba, Kenneth Gavin, Monica Prezzi, Theodoros Triantafyllidis May 2010

General Report — Session 1, Pedro De Alba, Kenneth Gavin, Monica Prezzi, Theodoros Triantafyllidis

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


General Report — Session 2, Ethan Dawson, C. B. Crouse May 2010

General Report — Session 2, Ethan Dawson, C. B. Crouse

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


General Report — Session 3, Dimitrios Zekkos, Adimoolam Boominathan, Adda Athanasopoulos-Zekkos May 2010

General Report — Session 3, Dimitrios Zekkos, Adimoolam Boominathan, Adda Athanasopoulos-Zekkos

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


General Report — Session 4, Ronaldo Luna, Panos Dakoulas, Wei Zheng, K. Önder Çetin, Mary Perlea, Gordon Tung-Chin Kung, Usama El Shamy, Simone Barani May 2010

General Report — Session 4, Ronaldo Luna, Panos Dakoulas, Wei Zheng, K. Önder Çetin, Mary Perlea, Gordon Tung-Chin Kung, Usama El Shamy, Simone Barani

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


General Report — Session 5, George E. Mylonakis, Achilleas Papadimitriou, Nikos Gerolymos May 2010

General Report — Session 5, George E. Mylonakis, Achilleas Papadimitriou, Nikos Gerolymos

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


General Report — Session 6, Alex Sy, Hing-Ho Tsang, Thava Thavaraj, Ellen M. Rathje, Yingwei Wu May 2010

General Report — Session 6, Alex Sy, Hing-Ho Tsang, Thava Thavaraj, Ellen M. Rathje, Yingwei Wu

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


General Report — Session 7, Jorge F. Meneses, Ioannis Anastasopoulos May 2010

General Report — Session 7, Jorge F. Meneses, Ioannis Anastasopoulos

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


General Report — Session 8, Tara C. Hutchinson, Scott M. Olson May 2010

General Report — Session 8, Tara C. Hutchinson, Scott M. Olson

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


General Report — Session 9, T. G. Sitharam, K. S. Vipin May 2010

General Report — Session 9, T. G. Sitharam, K. S. Vipin

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.


Keynote Lecture: Some Recent Developments In The Selection Of Ground Motions For Design, W. D. Liam Finn, A. Wightman May 2010

Keynote Lecture: Some Recent Developments In The Selection Of Ground Motions For Design, W. D. Liam Finn, A. Wightman

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

This paper describes some recent developments in the selection of ground motions for design; the conditional mean spectrum approach and risk targeted ground motions. The conditional mean spectrum approach is just finding its way into practice and its application to a major dam is presented. Risk targeted ground motions are the basis for the next generation of building codes in the USA. The process of determining these motions is explained. Finally in the context of the retrofit of 800 schools in British Columbia, Canada, a performance based design procedure based on incremental dynamic analysis (IDA), with direct application to geotechnical …


Table Of Contents, Multiple Authors May 2010

Table Of Contents, Multiple Authors

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.