Dynamics of Intake Towers and Other MDOF Structures Under Earthquake Loads: A Computer-Aided Approach
Final technical rept.
ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS INFORMATION TECHNOLOGY LAB
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This technical report presents an introduction to the basic dynamics of structures subject to earthquake excitation along with a brief summary of the preparation of response spectra for earthquake motions. The report is a primer on structural dynamics, specifically directed toward those engineers who have little or no formal training in dynamics beyond elementary dynamics. The report utilizes the readily understandable classical approach to structural dynamics, with standard computer software being used to evaluate the cumbersome and tedious mathematics inherent in the classical approach. The report develops first the dynamics of structural systems having a single degree of freedom, then extends the study into systems having multiple degrees of freedom. The report is oriented toward the analysis of distributed-mass intake structures but includes the analysis of lumped-mass systems as well. This report presents a new application of a traditional procedure for analyzing distributed-mass intake towers by using the Rayleigh method of analysis. This neoclassical approach represents an alternative to the traditional lumped-mass modeling procedure currently used for the dynamic analysis of intake towers.
- Structural Engineering and Building Technology