Author(s)

X. Zhiying

Abstract

Analysis of vertical vibration of earth dam in triangular canyons* X. Zhiying Department of Irrigation and Drainage Engineeering, Hohai University, Nanjing, China ABSTRACT In this paper, firstly, a partial differential equation of vertical motion for an earth dam with symmetrical cross-section in a triangular canyon is presented. Then by using the method of separation of variables and Bubnov-Galerkin ap- proach, an approximate eigenvalue solution for the fundamental natural fre- quency of vertical vibration of the dam is obtained. An approximate calculation formulas for vertical earthquake response of dam are given. These formulas are very simple and dynamic analysis may readily be made by hand calculation. At the end, a sample calculation has been presented. Some interesting and reason- abe results have been obtained. INTRODUCTION Designing an earth and rockfill dam to resist earthquake damage is probably one of the most difficult tasks to be faced by the geote

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