Abstracts – Browse Results
Click on the titles below to expand the information about each abstract.
Viewing 18 results ...
Cardin, M-A (2011) Quantitative performance-based evaluation of a procedure for flexible design concept generation, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Chiang, R (2002) Agency and incentive contract in private investment of transport project: An exploration of fundamental relationships, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Garvin, M J (2001) Strategic indicators for characterization of water system infrastructure and management, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Kristinsdottir, A (2012) Risks and decision making in development of new power plant projects, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Kua, H W (2006) The design of effective policies for the promotion of sustainable construction materials, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Lee, S (2006) Dynamic planning and control methodology: Understanding and managing iterative error and change cycles in large-scale concurrent design and construction projects, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Miller, J B (1995) Aligning infrastructure development strategy to meet current public needs, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Minelli, P (2020) Improved methods for managing megaprojects, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Moret, Y (2011) Modeling cost and time uncertainty in rail line construction, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Park, M (2001) Dynamic planning and control methodology for large-scale concurrent construction projects, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Slaughter, E S (1991) Rapid innovation and integration of components: Comparison of user and manufacturer innovations through a study of residential construction, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Sousa, R L (2010) Risk analysis for tunneling projects, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
- Type: Thesis
- Keywords: decision support; geology; injury; tunnel; risk assessment; Portugal; risk analysis; cost overrun; construction project; construction method
- ISBN/ISSN:
- URL: https://www.proquest.com/docview/745596409
- Abstract:
Tunnel construction is increasing world wide. Although the majority of tunnel construction projects have been completed safely, there have been several incidents that have resulted in delays, cost overruns, and sometimes more significant consequences such as injury and loss of life. To help eliminate these accidents, it is necessary to systematically assess and manage the risks associated with tunnel construction. In order to better understand the conditions under which accidents occur, a database of 204 tunnel construction accidents was assembled. This is the most comprehensive database known to date. The database was analyzed to better understand the causes of accidents. Influence diagrams were constructed containing the main factors, and the interactions between them. These served as the basis of the risk assessment methodology presented in this work. The risk assessment methodology consists of combining a geologic prediction model that allows one to predict geology ahead of the tunnel construction, with a decision support model that allows one to choose amongst different construction strategies the one that leads to minimum risk. The geologic prediction model is based on Bayesian networks because of their ability to combine domain knowledge with data, encode dependencies among variables, and their ability to learn causal relationships. The combined geologic prediction-decision support model was then applied to the Porto Metro, in Portugal. The results of the geologic prediction model were in good agreement with the observed geology, and the results of the decision support model were in good agreement with the construction methods used. More significant, however, is the ability of the model to predict changes in geology and consequently changes in construction strategy. This was shown in two zones of the tunnel were accidents occurred, where the model predicted an abrupt change in geology, and the construction method should have been changed but was not. Using the model could have possibly avoiding the accidents. This risk assessment methodology provides a powerful tool with which planners and engineers can systematically assess and mitigate the inherent risks associated with tunnel construction.
Taylor, D D J (2018) Tools for managing intermittent water supplies, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Tsai, I T (2007) Default and renegotiation: Financial structure and incentive in public-private partnership contracts, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Viteri, V R (2003) Experiential learning environments for structural behavior, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Wang, M-T (1989) Knowledge processing for a construction management database, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Wooldridge, S C (2002) Balancing capital and condition: An emerging approach to facility investment strategy, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Yan, S (1992) Intermodal pricing and operations using network flow techniques, Unpublished PhD Thesis, , Massachusetts Institute of Technology.