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|Title:||Fragility analysis of a concrete gravity dam and its system response curve computed by the analytical program GDLAD_Sloping_Base|
|Authors:||Science Applications International Corporation.|
Flood and Coastal Storm Damage Reduction Research Program (U.S.)
Ebeling, Robert M., 1954-
Fong, Moira T.
Multivariate probabilistic analysis
System response curve
|Publisher:||Information Technology Laboratory (U.S.)|
Engineer Research and Development Center (U.S.)
|Series/Report no.:||ERDC/ITL TR ; 08-3.|
Abstract: This research report describes the engineering formulation and corresponding software developed for expressing the computed stability results for an idealized two-dimensional cross section of a rock-founded concrete gravity dam in terms of fragility curves for the potential modes of failure (e.g., sliding, overturning). Within the Corps the term system response curve is now being used to describe what is commonly referred to in the technical literature as the fragility curve; the term system response curve is used for the hydrologic fragility assessment of rock-founded concrete gravity dams. This report uses this new Corps terminology. Uncertainty in strength, uplift parameters, silt-induced earth pressure and post-tensioned anchor forces are accounted for in a multivariate probabilistic stability analysis resulting in the computation of a system response curve. The PC software GDLAD_Sloping_Base (Gravity Dam Layout and Design) is used in this research and development effort to perform the computations and construct the system response curve. The resulting engineering methodology and corresponding software is applicable to a concrete gravity dam founded on rock with a level or sloping base. GDLAD_Sloping_Base is also capable of performing a deterministic (sliding and overturning) stability evaluation.
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