Now showing items 1-10 of 1657
Closing the Road Infrastructure Gap: Analysis of Expenditure Dynamics and Public-Private Partnership Shaping Challenges
(Virginia Tech, 2017-06-26)
The global infrastructure gap has continually widened over the last few decades. Industry reports and academic publications suggest that, in terms of road infrastructure, both advanced and developing economies have not ...
Modeling of Airline and Passenger Dynamics in the National Airspace System (NAS)
(Virginia Tech, 2010-08-27)
This dissertation is a collection of several models to understand airline and passenger dynamics in the National Airspace System (NAS). Agent-based modeling is one of the most widely used modeling simulation-analysis ...
Development of an extended hyperbolic model for concrete-to-soil interfaces
(Virginia Tech, 2000-07-19)
Placement and compaction of the backfill behind an earth retaining wall may induce a vertical shear force at the soil-to-wall interface. This vertical shear force, or downdrag, is beneficial for the stability of the ...
Analysis of Hot Mix Asphalt (HMA) Linear Viscoelastic and Bimodular Properties Using Uniaxial Compression and Indirect Tension (IDT) Tests
(Virginia Tech, 2007-09-07)
The major Hot-Mix Asphalt (HMA) input for mechanistic-empirical (M-E) flexible pavement design is the dynamic complex modulus obtained from either the uniaxial or triaxial compressive dynamic modulus test. Furthermore, ...
An Analysis of Fare Collection Costs on Heavy Rail and Bus Systems in the U.S.
(Virginia Tech, 2001-09-05)
In this research, an effort is made to analyze the costs of fare collection on heavy rail and motorbus systems in the U.S. Since existing ticketing and fare collection (TFC) systems are major elements of transit infrastructure ...
A comparison of subsurface biodegradation rates of methanol and tertiary butanol in contaminated and uncontaminated sites
(Virginia Polytechnic Institute and State University, 1986)
Structural System Reliability with Application to Light Steel-Framed Buildings
(Virginia Tech, 2017-01-31)
A general framework to design structural systems for a system-reliability goal is proposed. Component-based structural design proceeds on a member to member basis, insuring acceptable failure probabilities for every single ...
Moving Towards an Improved Liquefaction Hazard Framework: Lessons Resulting From the 2010-2011 Canterbury, New Zealand, Earthquake Sequence
(Virginia Tech, 2016-10-24)
The 2010-2011 Canterbury, New Zealand, Earthquake Sequence (CES) resulted in a liquefaction dataset of unprecedented size and quality, presenting a truly unique opportunity to assess and improve the efficacy of ...