Performance evaluation of RC buildings designed as per Indian seismic codes: A study on frames with vertical geometric irregularity
By: Manjula, N. K
.
Contributor(s): Nagarajan, Praveen | Pillai, T. M. Madhavan.
Publisher: Kolkata Springer 2018Edition: Vol. 99(4), December.Description: 677-687p.Subject(s): Civil EngineeringOnline resources: Click here
In:
Journal of the institution of engineers (India) Series ASummary: Analyses on RC frames designed as per the Indian standards (IS 1893:2002 and IS 13920:1993 (2008)) and draft proposal (IITK-GSDMA EQ 11 v 4.0, 2008) are done in this paper. Based on the results, certain provisions in the latest codes (IS 1893:2016 and IS 13920:2016) are reviewed. The study is focused on frames with vertical geometric irregularity. However, analyses of regular frames are also done to make certain comparisons. The necessity of strengthening/retrofitting for the buildings located in places whose seismic zones are revised as per IS 1893:2002 is also examined. Regular structures are found to sustain the earthquake events with sufficient safety. The design of regular frames can be made more economic by reducing their design base shear. The column/beam moment-capacity ratio (M.R.) in IS 13920:2016 is found uneconomical for regular frames. Improvements to the design of irregular frames can be made by reducing their response reduction (R) factors and following the M.R. value of 1.4 adopted in the recent code (13920:2016).
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School of Engineering & Technology Archieval Section | Not for loan | 2018211 |
Analyses on RC frames designed as per the Indian standards (IS 1893:2002 and IS 13920:1993 (2008)) and draft proposal (IITK-GSDMA EQ 11 v 4.0, 2008) are done in this paper. Based on the results, certain provisions in the latest codes (IS 1893:2016 and IS 13920:2016) are reviewed. The study is focused on frames with vertical geometric irregularity. However, analyses of regular frames are also done to make certain comparisons. The necessity of strengthening/retrofitting for the buildings located in places whose seismic zones are revised as per IS 1893:2002 is also examined. Regular structures are found to sustain the earthquake events with sufficient safety. The design of regular frames can be made more economic by reducing their design base shear. The column/beam moment-capacity ratio (M.R.) in IS 13920:2016 is found uneconomical for regular frames. Improvements to the design of irregular frames can be made by reducing their response reduction (R) factors and following the M.R. value of 1.4 adopted in the recent code (13920:2016).
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