(a) Write the structural motion equation under earthquake excitation, and then determine the corresponding mass, stiffness and damping matrix. (b) Use the modal decomposition-based method to carry out the structural design. Please calculate the designed base shear and the inter-story drift ratio of the 1" story. The circular frequencies and mode shape vectors of the structure are given as following. (The corresponding tables from the Seismic Design Code is given in the Appendix) (c) Explain why the structural seismic responses are dominated the 1" modal response.

(a) Write the structural motion equation under earthquake excitation, and then determine the corresponding mass, stiffness and damping matrix. (b) Use the modal decomposition-based method to carry out the structural design. Please calculate the designed base shear and the inter-story drift ratio of the 1" story. The circular frequencies and mode shape vectors of the structure are given as following. (The corresponding tables from the Seismic Design Code is given in the Appendix) (c) Explain why the structural seismic responses are dominated the 1" modal response.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 17P

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