Stochastic Seismic Response of Structures

by Patricio Ruiz, Asst. Prof. of Civ. Engrg.; Universidad Católica de Chile, Santiago, Chile,
Joseph Penzien, (M.ASCE), Prof. of Struct. Engrg.; Univ. of California, Berkeley, CA,

Serial Information: Journal of the Engineering Mechanics Division, 1971, Vol. 97, Issue 2, Pg. 441-456

Document Type: Journal Paper


Records of strong-motion earthquakes are simulated using a filtered shot noise. Twenty sample records are then used to simulate the response of a structure subjected to earthquake excitation. The stochastic model used to generate the artificial ground acceleration records is designed to produce sample records similar to those of real strong-motion earthquakes of magnitude 8.3 recorded on firm soil at about 45 miles from the epicenter. It is concluded that a filtered shot noise is very suitable for this simulation. An 8-story shear type building with inelastic force-deflection characteristics represented by a bilinear hysteretic model and having various values of stiffness and viscous damping is subjected to twenty samples of the artificial ground acceleration records. Major response parameters are evaluated and Monte-Carlo estimates of the statistics of these parameters are obtained to allow predictions of their values during future earthquakes.

Subject Headings: Earthquakes | Parameters (statistics) | Stochastic processes | Seismic tests | Seismic effects | Structural response | Filters | Excitation (physics)

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