A posteriori optimal intensity measures for probabilistic seismic demand modeling

2018 ◽  
Vol 17 (2) ◽  
pp. 681-706 ◽  
Author(s):  
Ao Du ◽  
Jamie E. Padgett ◽  
Abdollah Shafieezadeh
Keyword(s):  
Seismic Demand ◽  
A Posteriori ◽  
Intensity Measures ◽  
Demand Modeling ◽  
Probabilistic Seismic Demand ◽  
Optimal Intensity

Fractional order intensity measures for probabilistic seismic demand modeling applied to highway bridges

2012 ◽  
Vol 41 (3) ◽  
pp. 391-409 ◽  
Author(s):  
Abdollah Shafieezadeh ◽  
Karthik Ramanathan ◽  
Jamie E. Padgett ◽  
Reginald DesRoches
Keyword(s):  
Fractional Order ◽  
Highway Bridges ◽  
Seismic Demand ◽  
Intensity Measures ◽  
Demand Modeling ◽  
Probabilistic Seismic Demand

Improved intensity measures for probabilistic seismic demand analysis. Part 2: application of the improved intensity measures

2011 ◽  
Vol 38 (1) ◽  
pp. 89-99 ◽  
Author(s):  
Lan Lin ◽  
Nove Naumoski ◽  
Murat Saatcioglu ◽  
Simon Foo
Keyword(s):  
Demand Analysis ◽  
Seismic Demand ◽  
Intensity Measure ◽  
Reinforced Concrete Frame ◽  
Intensity Measures ◽  
Seismic Demands ◽  
Concrete Frame ◽  
Probabilistic Seismic Demand Analysis ◽  
Frame Buildings ◽  
Probabilistic Seismic Demand

This is the second of two companion papers on improved intensity measures of strong seismic ground motions for use in probabilistic seismic demand analysis of reinforced concrete frame buildings. The first paper discusses the development of improved intensity measures. This paper describes the application of the developed intensity measures in probabilistic seismic demand analysis. The application is illustrated on the three reinforced concrete frame buildings (4, 10, and 16-storey high) that were used in the first paper. This involved computations of the seismic responses of the structures and the seismic hazard using the improved intensity measures. The response and the hazard results were then combined by means of probabilistic seismic demand analysis to determine the mean annual frequencies of exceeding specified response levels due to future earthquakes (i.e., the probabilistic seismic demands). For the purpose of comparison, probabilistic seismic demand analyses were also conducted by employing the spectral acceleration at the fundamental structural periods (Sa(T1)) as an intensity measure, which is currently the most used in practice. It was found that the use of the improved intensity measures results in significantly lower seismic demands relative to those corresponding to the intensity measure represented by Sa(T1), especially for long period structures.

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