Accession Number : AD0766271

Title :   A Computer Program for Earthquake Analysis of Gravity Dams Including Hydrodynamic Interaction,

Corporate Author : CALIFORNIA UNIV BERKELEY EARTHQUAKE ENGINEERING RESEARCH CENTER

Personal Author(s) : Chakrabarti,P. ; Chopra,Anil K.

Report Date : MAY 1973

Pagination or Media Count : 65

Abstract : A computer program for earthquake analysis of gravity dams including effects of hydrodynamic interaction is presented. The dam-water system is idealized as two-dimensional in geometry, the material behavior is assumed to be linearly elastic, and the transverse horizontal as well as the vertical component of ground motion are considered. The dam is represented as a finite element system, whereas water in the reservoir is treated as a continum of infinite length in the upstream direction governed by the wave equation. Compressibility of water is considered resulting in governing equations for the dam depending on the excitation frequency. The analysis is performed in the frequency domain, first obtaining the frequency responses and then Fourier Synthesizing them by Fast Fourier Transform procedures to obtain responses to arbitrary ground motion. A listing of the computer program is included and the usage and capabilities are illustrated by examples. (Author)

Descriptors :   (*EARTHQUAKES, DAMS), (*DAMS, HYDRODYNAMICS), TERRAIN, MOTION, COMPUTER PROGRAMS, RESPONSE, INTEGRAL TRANSFORMS, TWO DIMENSIONAL FLOW, COMPRESSIVE PROPERTIES, STRESSES, ELASTIC PROPERTIES

Subject Categories : Seismology
      Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE