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Effect of Symmetrical Floor Plan Shapes with Re-Entrant Corners on Seismic Behavior of RC Buildings

P. Sanketh*, B.D.V. Chandra Mohan Rao**

* M.Tech Student, Department of Civil Engineering, VNR Vignana Jyothi Institute of Engineering and Technology, Hyderabad, Telangana, India.

** Professor, Department of Civil Engineering, VNR Vignana Jyothi Institute of Engineering and Technology, Hyderabad, Telangana, India.

Periodicity:June - August'2015
DOI : https://doi.org/10.26634/jste.4.2.3556

Abstract

The Seismic behavior of buildings critically depends on its overall shape, size, and configuration. Buildings with re-entrant corners in plan are considered to be irregular by many seismic design codes. The seismic behavior of RC buildings with symmetrical floor plan shapes having re-entrant corners (H shape, + shape) is investigated in this paper. Various types of building plan configurations with increasing amount of irregularity (A/L ratio) as per IS 1893 code are modelled and analyzed using ETABS 2015 software. A regular plan building is also modelled as a bench mark problem to compare all irregular models. Response spectrum analysis has been carried out for all these models located in seismic zone V of India. Various dynamic parameters such as Story displacement, Story drift and Base shear are compared and some useful conclusions are drawn.

Keywords

How to Cite this Article?

Sanketh, P., and Rao, B.D.V.C.M. (2015). Effect of Symmetrical Floor Plan Shapes with Re-Entrant Corners on Seismic Behavior of RC Buildings. i-manager’s Journal on Structural Engineering, 4(2), 15-21. https://doi.org/10.26634/jste.4.2.3556

References

[1]. IS 1893 (part-1) (2002). Criteria for Earthquake Resistant Design of Structure, B.I.S., New Delhi.

[2]. CSI Analysis Reference Manual for ETABS (2015), Computers & Structure Inc., Berkeley, California, USA.

[3]. Christopher Arnold (2006). Seismic Issues in Architectural Design, Chapter 5, Design for Earthquakes – A manual for Architects, FEMA 454.

[4]. L.T.Guevara, J.L.Alonso and E.Fortoul (1992). Floor-plan shape influence on the response to earthquakes, Earthquake Engineering, Tenth World Conference, Balkema, Rotterdam, ISBN 90 5410 0605.

[5]. Govind M, Kiran K. Shetty and K. Anil Hegde (2014). Seismic Evaluation of High Rise Regular and Irregular Structure Using Pushover Analysis. IOSR Journal of Mechanical and Civil Engineering, pp. 14-19.

[6]. Divyashree M and Gopi Siddappa (2014). Seismic Behavior of RC Buildings with Re-entrant Corners and Strengthening. IOSR Journal of Mechanical and Civil Engineering, pp. 63-69.

[7]. Divyashree M, Bhavyashree B N and Gopi Siddappa (2014). “Comparision of Bracings and Shear Walls as Seismic Strengthening Methods to Buildings with Plan Irregularities”. IJRET: International Journal of Research in Engineering and Technology, Vol. 3, No. 18, pp. 205-210.

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