Type of Document Dissertation Author Kim, Wonkyu URN etd-06062008-160648 Title A systems approach to transportation infrastructure management :development of a Highway Management System for the Virginia DOT Degree PhD Department Civil Engineering Advisory Committee
Advisor Name Title Drew, Donald R. Committee Chair Blanchard, Benjamin S. Jr. Committee Member de la Garza, Jesus M. Committee Member Trani, Antonio A. Committee Member Walker, Richard D. Committee Member Keywords
- system dynamics
- transportation infrastructure management
Date of Defense 1996-09-15 Availability restricted Abstract
Although there have been warnings about the decline in the U.S. transportation infrastructure for the last two decades, the infrastructure's service condition remains barely above current requirements, and is insufficient to meet future demands of growth and economic development. This deterioration and obsolescence primarily derives from a lack of investment, inappropriate management, and growing travel demands.
The objective of this research is to develop a model, using a system dynamics methodology, that serves as an instrumentality for generating scenarios for facilitating highway infrastructure management -- policy-making, planning, budgeting, and programming for the Virginia highway system.
The Highway Management System (H~1S) model, developed in this research, is a system dynamics model equipped with capabilities for analyzing and solving the metaproblems related to highway infrastructure planning and management. The HMS consists of five subsystems: 1) Physical Subsystem (Pavement Management System, and Bridge Management System), 2) Evaluation Subsystem, 3) Functional Subsystem, 4) Financial Subsystem, and 5) Administration Subsystem.
Through steady state analysis, an understanding of the relationship between state variables and decision variables can be obtained. The nomographs corresponding to the steady state solutions of the HMS are the analytically-based, manual means of gaining understanding by tracing paths from decision variables to state variables.
Simulations were performed using the HMS, based on various budget-size and allocation scenarios for the I-81 corridor. The results indicate that the service condition of the highway will be diminished and will return to its pre-expansion condition in several years, if the maintenance budget is not increased according to the expansion.
The HMS is a useful tool for decision-makers and engineers attempting to analyze and solve meta-problems related to transportation infrastructure management. The HMS presents a whole picture of the highway system according to various policy options. This systems approach to highway management also can be applied to the management of other infrastructure, and eventually it should be possible to achieve an integrated infrastructure management system.
Filename Size Approximate Download Time (Hours:Minutes:Seconds)
28.8 Modem 56K Modem ISDN (64 Kb) ISDN (128 Kb) Higher-speed Access LD5655.V856_1996.K56.pdf 73.60 Mb 05:40:45 02:55:14 02:33:20 01:16:40 00:06:32next to an author's name indicates that all files or directories associated with their ETD are accessible from the Virginia Tech campus network only.
If you have questions or technical problems, please Contact DLA.