Civil Engineering Association

Current Directions in Seismic Design

herein a good seminar for Seismic Design
CONTENTS
Tools for Seismic Structural Analysis

 Basic Modelling Concepts
 Linear Static Analysis
 Linear Dynamic Modal Response Spectrum Analysis
 Linear Dynamic Modal Response History Analysis
 Linear Dynamic Explicit Response History Analysis
 Nonlinear Static Pushover Analysis
 Nonlinear Dynamic Response History Analysis
 Incremental Nonlinear Dynamic Analysis (IDA)
 IDA is a relatively new approach in which a structure is repeatedly
analyzed for each motion scaled for gradually increasing/decreasing
intensities.
 Probabilistic Approaches (e.g. FEMA 350) quantifying

Dynamic Time History Analysis
In general, a three-dimensional model is necessary for TH
Analysis. However, due to limitations in available software,
3-D inelastic time history analysis may not be practical
(except for very special and important structures).
Main Concerns in Nonlinear Dynamic Analysis:
 Modelling of hysteretic behaviour
 Modelling inherent damping
 Selection and scaling of ground motions
 Interpretation of results
 Results may be quite sensitive to seemingly minor
pert rbations
perturbations
Due to the fact that some of these concerns may be
insurmountable in the framework of a deterministic analysis,
a probabilistic framework is being developed.

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dear moderators
move my post to this

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sorry for duplication

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mowafi3m

kowheng