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INTERNATIONAL JOURNAL OF SCIENTIFIC DEVELOPMENT AND RESEARCH International Peer Reviewed & Refereed Journals, Open Access Journal ISSN Approved Journal No: 2455-2631 | Impact factor: 8.15 | ESTD Year: 2016 open access , Peer-reviewed, and Refereed Journals, Impact factor 8.15 |
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| Paper Title: | Analysis Of Fundamental Natural Period Of Irregular Rcc Framed Structure |
| Authors Name: | Palash Vaidya , Dr. G.D Awchat |
| Unique Id: | IJSDR1607017 |
| Published In: | Volume 1 Issue 7, July-2016 |
| Abstract: | The determination of the fundamental natural period of vibration is essential to design a structure against earthquake loading. Current design codes in India such as IS 1893(Part 1):2002 or IS 875 (Part III):1987 provide formulas for the approximate period of earthquake-resistant building systems, which are dependent only on the height of the structure or number of stories. Such a formulation is overly conservative and unable to account for structures with geometric irregularities. This study investigates the fundamental periods of different types of reinforced concrete earthquake resistant building structures having structurally irregular frames (both vertical and horizontal). A total of 66 MRF structures for set-back, 168 MRF structures for mass irregularity, 90 MRF structures for soft-storey irregularity, 72 MRF structures for re-entrant corner irregularity and 160 MRF structures for torsional irregularity due to heavy mass are analyzed with STAAD.Pro-V8i. The fundamental periods based on vibration theory for each example were compared with current code equations. Through statistical comparison, it was found that a multi-variable power model which is able to account for irregularities resulted in a better fit to the Rayleigh data than equations which were dependent on height only. The proposed equations were validated through a comparison of available measured period data. These proposed equations will allow design engineers to quickly and accurately estimate the fundamental period of moment resisting frame structures by taking into account these types of irregularities. |
| Keywords: | analysis, Fundamental Natural period analysis, setbacks, Mass irregularity, Vertical irregularity, Time Period. |
| Cite Article: | "Analysis Of Fundamental Natural Period Of Irregular Rcc Framed Structure", International Journal of Science & Engineering Development Research (www.ijsdr.org), ISSN:2455-2631, Vol.1, Issue 7, page no.83 - 105, July-2016, Available :http://www.ijsdr.org/papers/IJSDR1607017.pdf |
| Downloads: | 000337070 |
| Publication Details: | Published Paper ID: IJSDR1607017 Registration ID:160600 Published In: Volume 1 Issue 7, July-2016 DOI (Digital Object Identifier): http://www.dx.doi.org/10.6084/m9.figshare.4981718 Page No: 83 - 105 Publisher: IJSDR | www.ijsdr.org ISSN Number: 2455-2631 |
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