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Iterative Subsystem Analysis for Seismic Monte Carlo Studies

by Loren D. Lutes, Texas A&M Univ, United States,
Ajay Singhal, Texas A&M Univ, United States,
Pol D. Spanos, Texas A&M Univ, United States,



Document Type: Proceeding Paper

Part of: Structural Safety and Reliability

Abstract:

Three iterative subsystem analysis techniques for Monte Carlo simulation of response time histories are examined. The three subsystems are designated primary, secondary, and interface, but there is no limitation that the secondary system be less massive than the primary. One of the solution techniques is an existing procedure which has not previously been applied to seismic problems, while the other two techniques are new variations. For linear seismic analysis the three schemes are quite versatile and it is difficult to conclude that any one is clearly better than the others. Each can give accurate results with reasonable computation time. For nonlinear systems, though, one of the new variations is consistently more efficient than the other approaches, with the difference being quite significant in some situations.

Subject Headings: Dynamic structural analysis | Seismic tests | Monte Carlo method | Structural reliability | Seismic effects | Load and resistance factor design | Earthquake resistant structures

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