Abstract
Non-linear Static Analysis serves as a suitable measure to evaluate the performance of a structural system. The careful selection of modelling approach and the load pattern is critical to arrive at an adequate performance evaluation. The present study seeks to evaluate and compare the response of an existing eight story reinforced concrete structure, through the application of different modeling approaches and load patterns prescribed by FEMA 356. The results indicates that, with extreme clarity, that in all cases, the shape of the lateral load distribution is what the response of the buildings is finely accustomed to. This is especially true when different patterns of load are considered. It can also be observed that there is a very small difference between various load patterns.
Highlights
Extreme shaking due to earthquakes is a relatively rare phenomena and the current earthquake design philosophy allows for some structural damage caused by shaking during strong earthquakes, in normal buildings, ensuring that they do not collapse
The present study seeks to evaluate and compare the response of an existing eight story reinforced concrete structure, through the application of different modeling approaches and load patterns prescribed by FEMA 356
The base shear are found in Uniform Distribution (UD) is higher when compared to the Equivalent Lateral Force Distribution (ELF) and IS1893 load distribution
Summary
Extreme shaking due to earthquakes is a relatively rare phenomena and the current earthquake design philosophy allows for some structural damage caused by shaking during strong earthquakes, in normal buildings, ensuring that they do not collapse. The height of the building, in the method of non-linear static analysis, is assumed with a set of static incremental lateral loads over it. It has a comparatively simplistic implementation process and reveals details about several aspects of the structure like its strength, deformation and ductility and even delineates the distribution of demands. This provides the information necessary to identify the liabilities of the structure, such as those key components that could plausibly reach their limit states in the course of an earthquake and require due consideration at the stage of designing and detailing of the structure. The present study attempts to evaluate the structure by adopting the non-linear static analysis by considering the available different modeling approaches pertaining to the stress–strain relationship of confined concrete
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