文档介绍：STRUCTURAL ANALYSIS FOR
PERFORMANCE-BASED
EARTHQUAKE ENGINEERING
Instructional plementing FEMA 451, Design Examples Methods of Analysis 15-5a - 1
Structural Analysis for
Performance-Based
Earthquake Engineering
• Basic modeling concepts
• Nonlinear static pushover analysis
• Nonlinear dynamic response history analysis
• Incremental nonlinear dynamic analysis
• Probabilistic approaches
Methods of Analysis 15-5a- 1- 2
Disclaimer
• The “design” ground motion cannot be predicted.
• Even if the motion can be predicted it is unlikely
than we can precisely predict the response. This is
due to the rather long list of things we do not know
and can not do, as well as uncertainties in the things
we do know and can do.
• The best we can hope for is to predict the
characteristics of the ground motion and the
characteristics of the response.
Instructional plementing FEMA 451, Design Examples Methods of Analysis 15-5a - 3
How pute Performance-Based
Deformation Demands?
Increasing Value
of
Information
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 Explicit Response History Analysis
= Not Reliable in Predicting Damage
Instructional plementing FEMA 451, Design Examples Methods of Analysis 15-5a - 4
FEMA 368 Analysis Analysis Method
Requirements
(SDC D, E, F)
Linear Resp. Hist. Nonlinear Resp. Hist.
Linear Static Response Spectrum
Regular
Structures YES YES YES YES
T ≤ T Plan Irreg. 2,3,4,5 YES YES YES YES
s Vert. Irreg. 4, 5
Plan Irreg. 1a ,1b
Vert. Irreg. 1a, 1b NO YES YES YES
2, or 3
All Other Structures NO YES YES YES
Nonlinear Static Analysis Limitations not Stated
Instructional plementing FEMA 451, Design Examples Methods of Analysis 15-5a - 5
FEMA 350 Analysis Analysis Method
Requirements
(Collapse Prevention)