Increasing future bridge safety in Oregon with Tcl

The second talk Friday was Michael Scott talking about how Oregon rates the safety of highway bridges.

Rating is done to compare the bridge capacity with demand imposed by vehicles. Large number of diagonally-cracked bridges exist (fatigue, corrosion; reduction in capacity). Purpose of assessment: vehicle weight restriction and prioritization for repair.

Tcl extension built to make use of OpenSees, an open-source software framework for computational models and solution algorithms for finite element analysis of structural systems developed at Berekely.

Tcl fully programmable, thus suited to repetitive nature of moving load analysis. Showed some example scripts (foreach truck $truckLibrary { ... }). Calculates a statistical rating for each bridge. Can graph rating index at all critical locations for each bridge. Makes it possible to do targeted repairs.

Future enhancements:

Thanks to Oregon Department of Transportation for sponsoring this research.

—Michael A. Cleverly

Permanent URL for this post: