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Graphical 3D Visualization of Highway Bridge Ratings |
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| Authors: | Gregory Esch Michael H Scott Eugene Zhang |
| Affiliation: | 1Graduate Research Assistant, School of Electrical Engineering and Computer Science, Oregon State Univ., Corvallis, OR 97331. E-mail: eschgr@eecs.oregonstate.edu 2Assistant Professor, School of Civil and Construction Engineering, Oregon State Univ., Corvallis, OR 97331 (corresponding author). E-mail: michael.scott@oregonstate.edu 3Assistant Professor, School of Electrical Engineering and Computer Science, Oregon State Univ., Corvallis, OR 97331. E-mail: zhange@eecs.oregonstate.edu |
| Abstract: | Aging highway infrastructure requires effective rating methodologies to prioritize bridges for rehabilitation and repair. To aid engineers in decision making regarding bridge maintenance, a three-dimensional (3D) visualization system is developed for rating reinforced concrete deck-girder bridge. Color codings show the most probable mode of failure for girder cross sections under combined moment-shear forces and allow an engineer to determine a rehabilitation strategy. The visualization system relies on 3D finite-element analyses using the open source framework OpenSees, making the system readily extensible to a wide range of bridge types and loading scenarios, as well as emergent reliability-based rating methodologies. Important features of the visualization system are emphasized, including the use of lighting and feature edge detection to improve the visual quality of a bridge model. Recent developments in scientific visualization are discussed for potential application to civil engineering problems. |
| Keywords: | Bridge management Maintenance Computer aided simulation Graphic methods Computer programming Loading rates Structural analysis Bridge highway |
