CHARACTERISTICS OF ELEMENTARY DYNAMIC BEHAVIOR FOR THREE DIMENSIONAL SEISMIC RESPONSE OF A FILL DAM

概要

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rights: 社団法人地盤工学会rights: 本文データは学協会の許諾に基づきCiNiiから複製したものであるrelation: IsVersionOf: http://ci.nii.ac.jp/naid/110003960100/The topographical features of dam sites are in general, so complex that two dimensional finite element models might not be applicable in the aseismic designs of these fill dams because of limited knowledge of how the seismic responses of dams are affected by them. Three dimensional vibration modes are not even well known. In this paper, elementary dynamic response behaviors for fill dams obtained from vibration tests on a three dimensional elastic model are discussed. These tests are simulated with a computer code for three dimensional seismic response analysis developed by the authors in order to both confirm the validity of the code and distinguish the fundamental modes. Finally, regarding the topographical features influencing the seismic responses of fill dams, the valley wall slopes in abutments and the width of a riverbed are taken into consideration in order to examine how every eigenfrequency up to the 4th order should fluctuate according to the change of each factor with a number of numerical analyses using the code. The results are presented in general diagrams representing the relationships between dimensionless eigenfrequencies and dimensionless topographical features.
社団法人地盤工学会の論文
1995-03-15