Author : Suyog Dhanwade 1
Date of Publication :15th March 2017
Abstract: Due to rapidly growing population, it is inevitable to construct multistory buildings and this calls for more and more space for parking. Generally, this requirement is met by introducing parking at ground floor and hence it is not possible to construct the brick walls to enclose ground floor completely. Similar situation is also observed while providing the refuge areas at intermediate floors for fire escape. This feature is called as soft storey and past records demonstrates that building with soft storey performed poorly during earthquake. Main reason behind the failure of building with soft storey, during earthquake is sudden change in stiffness, which causes excessive shear on the columns in soft storey. Hence, it is very much important to study the effects of soft storey on response of building. Further, appropriate care shall be taken during design to eliminate the effects of soft storey. Although, various researchers has studied this phenomenon and recommended the remedial measures, but the modeling techniques adopted for modeling brick infill is always questionable. Hence, it becomes important to study this phenomenon with more detailed considerations to empirical time period formulas proposed in IS1893 Part 1: 2002. Considering above facts, study has been carried out using G+7 building model, to validate the empirical time period formula proposed in IS1893 Part 1: 2002. Further, effect of soft storey on seismic response of building is also evaluated by considering G+7 building with soft storey at GF, 2nd Floor, 4th Floor & 6th Floor respectively.
Reference :
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- Arlekar, J. N., Jain, S. K. and Murty, C. V. R. (1997), "Seismic response of RC frame buildings with soft first storeys", Proc. CBRI Golden Jubilee Conf. on National Hazards in Urban Habitat, New Delhi, 13-24
- S. Zubair Ahmed, K.V.Ramana, Ramancharla Pradeep Kumar (2014), “Seismic Response of RC Frame Structure With Soft Storey”, Vol.3, Issue.9, eISSN:2319-1163, pISSN:2321-7308, pg 180-186, International Journal of Research in Engineering and Technology (IJRET)
- Dr. Saraswati Setia and Vineet Sharm (2012), “Seismic Response of R.C.C Building with Soft Storey”, International Journal of Applied Engineering Research, ISSN 0973- 4562 Vol.7 No.11.
- Mohd Aliuddin, Mohammed Shoaib Ayjaz, Venkata Dilip Kumar Pasupuelti (2014), "Comparing Seismic Response Of Soft-Storey Structure With And Without Bracings", Vol 4, Issue 13, eISSN: 2319-1163, pISSN: 2321-7308, pg 228-240, International Journal of Research in Engineering and Technology (IJRET)
- Abhishek Arora (2015), "Alternative Approach to Soft Storey in Seismic Analysis of R.C.C Building Structures", Vol 10, Issue 1, pg 40-45, SSRG International Journal of Civil Engineering (SSRG-IJCE)
- Pisal, Alka & Jangid, R.S., "Dynamic Response of Structure with Semi- Active Tuned Mass Friction Damper," International Journal of Structural and Civil Engineering Research, Vol. 2, issue- 1, pp 17-31, February 2013.
- Pisal, Alka & Jangid, R.S., "Seismic response of multi-story structure with multiple tuned mass friction dampers", International Journal of Advanced Structural Engineering (IJASE), Vol. 06, Issue- 1, pp 46-1 to 46-13, 2014