Abstracts – Browse Results
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Cardin, M-A (2011) Quantitative performance-based evaluation of a procedure for flexible design concept generation, Unpublished PhD Thesis, , Massachusetts Institute of Technology.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Agency and incentive contract in private investment of transport project: An exploration of fundamental relationships, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Garvin, M J (2001) Strategic indicators for characterization of water system infrastructure and management, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Kristinsdottir, A (2012) Risks and decision making in development of new power plant projects, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Kua, H W (2006) The design of effective policies for the promotion of sustainable construction materials, Unpublished PhD Thesis, , Massachusetts Institute of Technology.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and managing iterative error and change cycles in large-scale concurrent design and construction projects, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Miller, J B (1995) Aligning infrastructure development strategy to meet current public needs, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Minelli, P (2020) Improved methods for managing megaprojects, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
Moret, Y (2011) Modeling cost and time uncertainty in rail line construction, Unpublished PhD Thesis, , Massachusetts Institute of Technology.
- Type: Thesis
- Keywords: uncertainty; construction cost; Portugal; cost overrun; construction project; embankment; tunnel; infrastructure project
- ISBN/ISSN:
- URL: https://www.proquest.com/docview/917931430
- Abstract:
Transportation construction projects are often plagued by cost overruns and delays. Technical, economic-political, psychological, and legal causes explain the frequent underestimations. To counteract such underestimations, the author developed an innovative approach to capture cost and time uncertainty in rail line projects, and applied this to the construction of a new high speed rail line in Portugal. The construction of the four main types of structures in rail lines (tunnels, viaducts, cuts and embankments) is modeled bottom-up from the single activity to the entire rail line. Sub-networks of activities are combined in structure networks to model the rail line structures; in turn, the structure networks are organized in the construction network to represent the rail line. For the first time, three sources of uncertainty (variability in the construction process, correlations between the costs of repeated activities, and disruptive events) are modeled jointly at the level of the single activity. These uncertainties are propagated to the total construction cost and time through the combination of the individual activity costs and times. The Construction and Uncertainty Models are integrated in the Decision Aids for Tunneling (DAT), which have been extended beyond tunneling to consider different structures and different uncertainty types. Based on historical input data and expert estimations, the cost and time uncertainty in the construction of four alignments of the new Portuguese high speed rail line is simulated. The three sources of uncertainty cause different cost and time impacts depending on the type of structure suggesting structure specific mitigation measures. Most importantly, their cumulative impact causes significant increases in construction cost and time compared to the deterministic estimates: 58% in the construction cost of tunnels, and 94% in the construction time of cuts and embankments. The Construction and Uncertainty Models and their integrated implementation in the DAT provide transportation agencies with a modeling tool to tackle cost and time uncertainty in the construction of rail lines and other linear/networked infrastructure projects.
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.
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.