scholarly journals Seismic Performance Assessment of a Moment-Frame Reinforced Concrete Building Typology

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Marsed Leti
Keyword(s):  
Reinforced Concrete ◽  
Dynamic Analysis ◽  
Pushover Analysis ◽  
Shear Walls ◽  
Seismic Performance Assessment ◽  
Moment Frame ◽  
Limit States ◽  
Reinforced Concrete Building ◽  
Concrete Building ◽  
Building Typology

This study covers the application of Static and Dynamic nonlinear analysis to an old moment-frame reinforced concrete building. The case study selected is a template one designed in 1982 without shear walls and built throughout Albanian region in the communism era using old standards (KTP 2-78). For the capacity calculation, Pushover analysis is performed using an inverse triangular load pattern. The demand calculation is conducted using Incremental Dynamic Analysis (IDA) as a method which provides the response behavior of the structure from the elastic range until collapse. For the dynamic analysis is used a set of 18 earthquakes with no marks of directivity. Limit states are defined for both Pushover and IDA based on the FEMA 356 guidelines. The mathematical model is prepared in the environment of Zeus-NL, a software developed especially for earthquake applications. The parameters defined for the IDA analysis are 5% damped first mode spectral acceleration (Sa(T1,5%)) for the intensity measure (IM) and maximum global drift ratio (ϴmax) for the damage measure (DM). In addition, limit states are selected for the pushover curve as Immediate Occupancy (IO), Life Safety (LS) and Collapse Prevention (CP). Similarly, for the IDA curve the limit states are selected as IO, CP and Global Instability (GI) based on FEMA guidelines. Furthermore, IDA curves are summarized into 16%, 50% and 84% fractiles as suggested in the literature. Additionally, a comparison between Pushover and IDA median (50% fractile) is shown from the same graph to illustrate the correlations between performance levels. Finally, structural performance is interpreted based on the outcomes.

scholarly journals Dynamic response of reinforced concrete building from the effects of rail transport

2014 ◽  
Vol 9 (1) ◽  
pp. 69-78
Author(s):  
Ivo Demjan ◽  
Michal Tomko
Keyword(s):  
Reinforced Concrete ◽  
Dynamic Response ◽  
Dynamic Analysis ◽  
3D Model ◽  
Spectral Response ◽  
Random Excitation ◽  
Rail Transport ◽  
Reinforced Concrete Building ◽  
Load Spectra ◽  
Concrete Building

Abstract A 3D model of a reinforced concrete building and was created in software ANSYS. The dynamic analysis was focused on the spectral response of the object represented by a random excitation experiment found in records in the form of load spectra

Nonlinear dynamic analysis of reinforced concrete building structures

1980 ◽  
Vol 7 (2) ◽  
pp. 333-344 ◽  
Author(s):  
Shunsuke Otani
Keyword(s):  
Reinforced Concrete ◽  
Dynamic Analysis ◽  
Nonlinear Dynamic ◽  
Nonlinear Dynamic Analysis ◽  
Analytical Models ◽  
Building Structures ◽  
Reinforced Concrete Building ◽  
Building Model ◽  
Concrete Members ◽  
Concrete Building

This state-of-the-art paper discusses nonlinear dynamic analysis of reinforced concrete building structures. Nonlinear analysis of a reinforced concrete building is difficult (a) because inelastic deformation is not confined at critical sections, but spreads throughout the structure; and (b) because stiffness of the reinforced concrete is dependent on a strain history.The paper reviews the behaviour of reinforced concrete members and their subassemblies observed during laboratory tests. Then different hysteresis and analytical models of reinforced concrete members are reviewed, and their application to the simulation of building model behaviour is discussed.

Wave Dynamic Analysis of the Seismic Response of a Reinforced Concrete Building

2008 ◽  
Author(s):  
Rodrigo Astroza ◽  
G. Rodolfo Saragoni ◽  
Adolfo Santini ◽  
Nicola Moraci
Keyword(s):  
Reinforced Concrete ◽  
Dynamic Analysis ◽  
Seismic Response ◽  
Reinforced Concrete Building ◽  
Wave Dynamic ◽  
Concrete Building

scholarly journals Application of Mode-Adaptive Bidirectional Pushover Analysis to an Irregular Reinforced Concrete Building Retrofitted via Base Isolation

2021 ◽  
Vol 11 (21) ◽  
pp. 9829
Author(s):  
Kenji Fujii ◽  
Takumi Masuda
Keyword(s):  
Reinforced Concrete ◽  
Base Isolation ◽  
Pushover Analysis ◽  
Half Cycle ◽  
2016 Kumamoto Earthquake ◽  
Isolation Technique ◽  
Reinforced Concrete Building ◽  
Kumamoto Earthquake ◽  
The 2016 Kumamoto Earthquake ◽  
Concrete Building

In this article, the applicability of mode-adaptive bidirectional pushover analysis (MABPA) to base-isolated irregular buildings was evaluated. The point of the updated MABPA is that the peaks of the first and second modal responses are predicted considering the energy balance during a half cycle of the structural response. In the numerical examples, the main building of the former Uto City Hall, which was severely damaged in the 2016 Kumamoto earthquake, was investigated as a case study for the retrofitting of an irregular reinforced concrete building using the base-isolation technique. The comparisons between the predicted peak response by MABPA and nonlinear time-history analysis results showed that the peak relative displacement can be properly predicted by MABPA. The results also showed that the performance of the retrofitted building models was satisfactory for the ground motion considered in this study, including the recorded motions in the 2016 Kumamoto earthquake.

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