NEHRP Clearinghouse
 Title
 Seismic Water Pressures on Dams for Arbitrarily Shaped Reservoirs.
 File

PB86110996.pdf
 Author(s)
 Huang, L. C.; Chwang, A. T.
 Source

National Science Foundation, Washington, DC.,
September 1985,
102 p.
 Identifying Number(s)
 IIHR291
 Abstract
 An Accurate hydrodynamic pressure distribution on the vertical upstream face of a flexible dam due to ground excitations is obtained for a threedimensional, arbitrarily shaped reservoir with a rigid vertical side boundary. The solution for the velocity potential is expressed analytically in terms of a set of line integrals along the reservoir boundary. The matrix equation is solved numerically and the hydrodynamic pressure distribution on the damreservoir interface is determined in terms of the velocity potential through the Bernoulli equation. An integration of the hydrodynamic pressure distribution yields the total earthquake loading on a dam. The effect of the surface waves and the compressibility effect of water on seismic water pressures have been studied in detail. It is found that the compressibility of water and the flexibility of a dam change significantly the hydrodynamic pressure force acting on the dam.
 Keywords
 Response; Dams; Boundary integral method; Flexible foundations; Boundaries; Earthquakes; Hydrodynamics; Reservoirs; Mathematical models; Deformation; Pressure; Seismic waves