Plans for a sensitivity analysis of bridge-scour computations
By: David D. Dunn and Peter N. Smith
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Abstract
Plans for an analysis of the sensitivity of Level 2 bridge-scour computations are described. Cross-section data from 15 bridge sites in Texas are modified to reflect four levels of field effort ranging from no field surveys to complete surveys. Data from United States Geological Survey (USGS) topographic maps will be used to supplement incomplete field surveys. The cross sections are used to compute the water-surface profile through each bridge for several T-year recurrence-interval design discharges. The effect of determining the downstream energy grade-line slope from topographic maps is investigated by systematically varying the starting slope of each profile. The water-surface profile analyses are then used to compute potential scour resulting from each of the design discharges. The planned results will be presented in the form of exceedance-probability versus scour-depth plots with the maximum and minimum scour depths at each T-year discharge presented as error bars.
Suggested Citation
Dunn, D., Smith, P.N., 1993, Plans for a sensitivity analysis of bridge-scour computations, in Proceedings - National Conference on Hydraulic Engineering, no. pt 1, San Francisco, CA, USA, 25 July 1993 through 30 July 1993, p. 773-778.
| Publication type | Conference Paper |
|---|---|
| Publication Subtype | Conference Paper |
| Title | Plans for a sensitivity analysis of bridge-scour computations |
| ISBN | 0872629201 |
| Issue | pt 1 |
| Year Published | 1993 |
| Language | English |
| Publisher | Publ by ASCE |
| Publisher location | New York, NY, United States |
| Larger Work Title | Proceedings - National Conference on Hydraulic Engineering |
| First page | 773 |
| Last page | 778 |
| Conference Title | Proceedings of the 1993 National Conference on Hydraulic Engineering. Part 1 (of 2) |
| Conference Location | San Francisco, CA, USA |
| Conference Date | 25 July 1993 through 30 July 1993 |