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Authors Name: Dantanala Alekhya , SK. Inthiyaz
Unique Id: IJSDR2008051
Published In: Volume 5 Issue 8, August-2020
Abstract: The project's aim is to evaluate response spectrum (RS) and time history (THA) of vertically irregular RC building frames using IS13920 corresponding to Equivalent static analysis and time historical analysis. Their purpose is to carry on ductility based design. The findings were contrasted with the standard structure for study and design of irregular structures.The research also concerns the evaluation of responses from strong, weak, and medium-frequency earthquakes to structures subjected to time histories. There were three types of irregularities: mass irregularity, rigidity irregularity, and irregularities in vertical geometry. Our observation shows that the shop shear force is maximal in the first floor, and decreases in all cases to a minimum in the top floor. Mass irregular structures were found to be larger than equivalent regular structures. The irregular rigidity system has a smaller base shear and has larger interstory drifts. The absolute shifts obtained from historical study of the irregular geometry structure at the respective nodes were higher in the case of normal structures for the higher stories, but slowly as we shifted to lower stories, changes in both structures appeared to converge. Higher rigidity contributes to higher upper-story displacement. In the case of an unusual mass structure, an examination of time history provides slightly higher range for top stories than in normal structures, whereas in the case of lower stories, there are higher increase than in normal stories. When the historical study of normal and rigid irregular structure was made, it was found that the displacements in the upper stories were not very different but that the absolute displacements were greater in case of softening than in the standard structure when we moved to the lower stories. High natural frequency structures have been found to have highest response during an earthquake of low frequency. It is because the low natural frequency of high-frequency earthquake systems results in vibration that contributes to greater displacements. If a high-rise (low natural frequency) structure is subject to high-frequency earth shifting, it contributes to minor changes. Likewise, when the high-frequency earth motion underlies a low elevation structure (high natural frequency), it results in bigger movements and when a high-elevation structure is subject to low-frequency earth motion, slight displacements happen.
Keywords: Staad.Pro, Seismic Loads, Framed Structure.
Cite Article: "DIMENSIONAL SEISMIC ANALYSIS OF IRREGULAR REINFORCED CEMENT CONCRETE FRAMED STRUCTURE BY USING STAAD.Pro", International Journal of Science & Engineering Development Research (www.ijsdr.org), ISSN:2455-2631, Vol.5, Issue 8, page no.369 - 376, August-2020, Available :http://www.ijsdr.org/papers/IJSDR2008051.pdf
Downloads: 00060115
Publication Details: Published Paper ID: IJSDR2008051
Registration ID:192266
Published In: Volume 5 Issue 8, August-2020
DOI (Digital Object Identifier):
Page No: 369 - 376
Publisher: IJSDR | www.ijsdr.org
ISSN Number: 2455-2631

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