Homework6 - earthquake record. Plot the final response of...

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CEE511 – Structural Dynamics Fall Semester 2010-2011 Homework #6 (Due November 8, 2010) Numerical Integration and Response Spectra 1. Consider the response of the Ann Arbor water tower to ground motion: Ann Arbor w = 386.4 kips k = 100 kips/in u g Not knowing precisely the damping properties of the tower, you guess the damping ratio of the system is approximately 3%. Analyze the response of the structure using the Newmark – Linear Acceleration method when the structure is exposed to the El-Centro (1940, NS) Earthquake ground motion record (posted on the course website as a “.mat” file). A MATLAB script and function are provided on the class website to help get you started with this project. Consider the response of the water tower for the total duration of the
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Unformatted text preview: earthquake record. Plot the final response of the structural system (relative displacement of the tower with respect to the ground, relative velocity and relative acceleration). 2. You are asked by the local ASCE professional chapter to derive a seismic response spectra for inclusion in the local structural design codes. Assuming the ground motion provided in the previous problem is a common ground motion for the Ann Arbor area, please find a SDOF Response Spectra (maximum relative displacement versus natural frequency) for the damping ratio,  = 0.03. When plotting the response spectra, please ensure your axes are log-log and find the curve for f = 0.1 to 10 Hz in increments of 0.05 Hz....
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This note was uploaded on 02/03/2011 for the course CE 573 taught by Professor Various during the Spring '11 term at American University of Science & Tech.

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