摘要: |
The first objective of this project is to develop a geographic information systems (GIS)-based database that will provide
various data and meta-data for all of California’s 20,000+ highway bridges. This
database alone will allow experts from multiple domains—e.g., bridge engineers, city
and traffic planners, and first responders—to carry out tasks such as emergency traffic
planning, load rating of older bridges, life-cycle cost-benefit assessment of a given
bridge.
The second objective is to devise a computational toolbox that will interact with the
database to produce a regional seismic risk/loss assessment of California’s
transportation network. The said toolbox (or “app”) will produce quantitative results in
the form of site- and structure-specific seismic bridge fragilities, which will enable
pre-event regional economic loss studies, as well as rapid post-event assessment
reports.
The third objective is to produce a third tool that will enable financial loss studies on
freight traffic due to large scenario-based earthquakes.
The fourth and final objective of this project is to demonstrate the utility of the
aforementioned databases and analysis tools by applying it to the freight traffic to and
from the Port of Los Angeles in the aftermath of a large Southern California scenario-
based earthquake. The seismic fragilities and freight data will be used to explore how
much a given pre-event mitigation effort will minimize financial losses—in the form of,
for example, recommended priority retrofits and maintenance runs, construction of
redundant routes, and temporary routing plans until full recovery.
It is important to note that the aforementioned database and analysis tools will be
expandable to a plethora of other applications related to the utility, functionality, and
natural and anthropogenic hazard exposure of California’s transportation network. |