NEHRP Clearinghouse
 Title
 Nonlinear Earthquake Response of Concrete Gravity Dam Systems.
 File

PB89193924.pdf
 Author(s)
 ElAidi, B.
 Source

National Science Foundation, Washington, DC.,
August 21, 1988,
202 p.
 Identifying Number(s)
 EERL8802
 Abstract
 The earthquake response of concrete gravity dam systems is investigated with emphasis on the nonlinear behavior associated with tensile concrete cracking and water cavitation. A single dammonolith is considered and is assumed to respond independently as a twodimensional system under plane stress conditions. The twodimensional assumption is also extended to model the compressible water body impounded upstream of the dam. Standard displacementbased finite element techniques are used to spatially discretize the field equations and produce a single symmetric matrix equation for the damwater system. Energy dissipation in the reservoir, through radiation in the infinite upstream direction and absorption at the bottom, is approximately accounted for, and a set of numerical examples is presented to demonstrate the accuracy of the present formulation in modeling the linear earthquake response of infinite reservoirs. An approximate procedure to account for damfoundation interaction is incorporated based on the response of a rigid plate attached to a threedimensional viscoelastic halfspace.
 Keywords
 ; Gravity dams; Response; Cracking (Fracturing); Viscoelasticity; Earthquakes; Cavitation; Rigid foundations; Tensile stress; Displacement; Concrete structures; Mathematical models