Seismic Analysis of Soft Storey Buildings Considering Structural and Geometrical Parameters

  • Gaurav Joshi Department of Civil Engineering, UIT (RGPV), Bhopal, MP
  • K.K. Pathak Department of Civil and Environmental Engineering, NITTTR, Bhopal, MP
  • Saleem Akhtar Department of Civil Engineering, UIT (RGPV), Bhopal, MP
Keywords: Seismic, Maximum moment, Storey displacement, Shear force, Axial force, Drift

Abstract

Soft storeys in a high rise building play an important role on its seismic performance. At the soft storey level, there is a discontinuity in the rigidity of the structure due to lack of infill walls or due to variation in floor height. It is this continuity which is the cause of structural failure of multi stored buildings under earthquake loads. In this study, seismic analysis of soft storey building frames have been carried out considering 3 building plans, 15 soft storeys cases and 20 load combinations. Soft storeys have been created by varying the floor heights and effect of infill is ignored. In this way, total 45 frames are analysed. STAAD.pro software has been used for analysis purpose. Results are collected in terms of max. moment, max. storey displacements, max. shear force, max. axial force and max. drift, which are critically analysed to quantify the effects of various parameters.

Downloads

Download data is not yet available.

References

[1] Chen Y.Q., Constantinou M.C., (1990), Use of Teflon sliders in a modification of the concept of soft first storey; Engineering Structures, Volume 12, Issue 4, Pages 243-253.
[2] Chopra, A. K., (1995), Dynamics of Structures: Theory and Applications to Earthquake Engineering, Prentice-Hall. Inc., Englewood Cliffs, New Jersey.
[3] Kirac Nevzat, Dogan Mizam, Ozbasaran Hakan, (2011), Failure of weak storey during earthquakes; Engineering Failure Analysis, Volume 18, Issue 2, Pages 572-581.
[4] Mo Y.L., Chang Y.F., (1995), Application of base isolation concept to soft first storey buildings; Computers & Structures, Volume 55, Issue 5, Pages 883-896.
[5] Plumier A., Doneux C., Stoychev L., Demarcot T., (2005), Mitigation of soft storey failures of R.C. structures under earthquake by encased steel profiles; Fourth International Conference on Advances in Steel Structures, Volume 2, Pages 1193-1198.
[6] Vipul Prakash (2004), Whither Performance-Based Engineering in India, ISET Journal of Earthquake Technology, 41(1), pp. 201-222.
[7] Sivakumaran K.S., Balendra T., (1994), Seismic analysis of asymmetric multistorey buildings including foundation interaction and P-Δ effects, Engineering Structures, Volume 16, Issue 8, Pages 609-624.
[8] Sivakumaran K.S.,(1990), Seismic analysis of mono-symmetric multi-storey buildings including foundation interaction; Computers & Structures, Volume 36, Issue 1, Pages 99-107.
[9] Sen Zekai, (2010), Rapid visual earthquake_hazard evaluation of existing buildings by fuzzy logic modelling; Expert Systems with Applications, Volume 37, Issue 8, Page 5653.
[10] User’s manual STADD. PRO. software, 2013.
[11] Yoshimura Manabu, (1997), Nonlinear analysis of a reinforced concrete building with a soft first storey collapsed by the 1995 Hyogoken-Nanbu earthquake; Cement and Concrete Composites, Volume 19, Issue 3, Pages 213-221
Published
2013-12-25
How to Cite
Gaurav Joshi, K.K. Pathak, & Saleem Akhtar. (2013). Seismic Analysis of Soft Storey Buildings Considering Structural and Geometrical Parameters. Journal on Today’s Ideas - Tomorrow’s Technologies, 1(2), 73-84. https://doi.org/10.15415/jotitt.2013.12005
Section
Articles