Search
Now showing items 1-10 of 1668
Two Dimensional Analysis of Vibration Isolation of Rigid Bar Supported by Buckled or Pre-bent Struts
(Virginia Tech, 2004-12-03)
The purpose of this research is to study a new type of vibration isolator, utilizing the post-buckled stiffness of elastic struts (or columns). The advantage of the post-buckled state is that ideally it can support more ...
Java Applet for Teaching Finite Element Analysis
(Virginia Tech, 2006-02-03)
A Java applet is developed to interactively and dynamically illustrate the fundamental concepts of finite element analysis. An applet is a computer program written in the object-oriented Java programming language and is ...
Corrosion Assessment for Failed Bridge Deck Closure Pour
(Virginia Tech, 2011-12-02)
Corrosion of reinforcing steel in concrete is a significant problem around the world. In the United States, there are approximately 600,000 bridges. From those bridges 24% are considered structurally deficient or ...
An Analysis and Critique of DEM Creaion and 3-D Modeling Using Airborne LIDAR and Photogrammetric Techniques
(Virginia Tech, 2001-06-22)
Three-dimensional (3D) visualization is rapidly becoming an important tool for many engineering projects. Accurate digital representations of terrain and ground features are extremely useful for efficient design, communication ...
Parameters Influencing Seismic Structural Collapse with Emphasis on Vertical Accelerations and the Possible Related Risks for New and Existing Structures in the Central and Eastern United States
(Virginia Tech, 2004-05-18)
This thesis presents the results of basically two separate studies. The first study involved identifying structural and earthquake parameters that influenced seismic structural collapse. The parameter study involved ...
AHS Maglev System Architecture
(Virginia Tech, 1999-08-23)
In the period between 1993-1998 a vision was presented of an Automated Highway System developed under a contract naming Virginia Tech one of the three ITS Research Centers of Excellence in the United States by the Federal ...
Automated 2D Detection and Localization of Construction Resources in Support of Automated Performance Assessment of Construction Operations
(Virginia Tech, 2012-12-10)
This study presents two computer vision based algorithms for automated 2D detection of construction workers and equipment from site video streams. The state-of-the-art research proposes semi-automated detection methods for ...
Comparison of Microscopic and Mesoscopic Traffic Modeling Tools for Evacuation Analysis
(Virginia Tech, 2017-03-06)
Evacuation processes can be evaluated using different simulation models. However, recently, microscopic simulation models have become a more popular tool for this purpose. The objectives of this study are to model multiple ...
A Generalized Log-Law Formulation For a Wide Range of Boundary Roughness Conditions Encountered in Streams
(Virginia Tech, 2011-08-30)
It is demonstrated that the method for locating a velocity profile origin, or plane of zero velocity, by fitting log profiles to streamwise velocity measurements is applicable to a larger range of roughness scales than ...
Determination of AASHTO Bridge Design Parameters through Field Evaluation of the Rt. 601 Bridge: A Bridge Utilizing Strongwell 36 in. Fiber-Reinforced Polymer Double Web Beams as the Main Load Carrying Members
(Virginia Tech, 2002-12-03)
The Route 601 Bridge in Sugar Grove, Virginia spans 39 ft over Dickey Creek. The Bridge is the first to use the Strongwell 36 in. fiber reinforced polymer (FRP) double web beam (DWB) in its superstructure. Replacement ...