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A Comparative Study on Time History Analysis ofPlan Irregular RC Buildings

G. Nagasai*, B.D.V. Chandra Mohan Rao**

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

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

Periodicity:March - May'2017
DOI : https://doi.org/10.26634/jste.6.1.13473

Abstract

The behavior of the building mainly depends on its overall shape, size, and geometry in the event of an earthquake. As irregular floor plans are more vulnerable to earthquakes, they are not recommended in seismic prone regions, but still widely used everywhere. In this present study, the seismic behavior of RC buildings is analyzed using linear dynamic Time History Analysis considering the Olympia (1949) earthquake ground motion data as input. Various RC buildings with different floor plan shapes having re-entrant corners (L, C) with increasing amount of irregularity in terms of A/L ratio are considered for investigation. The various response parameters, such as base shear, story drift, and top storey displacements are observed and some useful conclusions are drawn. For the present research, ETABS 2015 [1] software has been used as modeling and analysis tool.

Keywords

A/L Ratio, Floor Plan Shape, Re-entrant Corners, Irregular Building, Time History Analysis, Olympia Ground Motion

How to Cite this Article?

Nagasai, G., and Rao, B.D.V.C.M. (2017). A Comparative Study on Time History Analysis of Plan Irregular RC Buildings . i-manager’s Journal on Structural Engineering. 6(1), 1-6. https://doi.org/10.26634/jste.6.1.13473

References

[1]. CSI Analysis Reference Manual for ETABS (2015). Computers & Structures Inc., Berkeley, USA.

[2]. Divyashree M., and Gopi Siddappa, (2014). “Seismic behavior of RC building with re-entrant corners and strengthening”. IOSR Journal of Mechanical and Civil Engineering, pp. 63-69.

[3]. Govind M, Kiran K, Shetty, and K. Anil Hegde, (2014). “Seismic evaluation of high rise regular and irregular structures using Pushover Analysis”. IOSR Journal of Mechanical and Civil Engineering, pp. 14-19.

[4]. Indian Standards (2002). Criteria for Earthquake Resistant Design of Structure (IS1893Part-1). BIS Publications: New Delhi, India.

[5]. L.T. Guevara, J.I. Alonso, and E. Fortoul, (1992). “Floor plan shape influence on the response to earthquakes”. Tenth World Conference on Earthquake Engineering, Madrid, Spain, pp. 3945-3950.

[6]. P Sanketh, and B.D.V. Chandra Mohan Rao, (2016). “Seismic strengthening of plan irregular RC buildings with reentrant corners by using shear walls”. IJRET, Vol. 5, No. 2, pp. 21-26.

[7]. P. Sanketh, and B.D.V. Chandra Mohan Rao, (2015). “Effect of symmetrical floor plan shapes with re-entrant corners on seismic behavior of RC buildings”. i-manager’s Journal on Structural Engineering, Vol. 4, No. 2, June- August 2015, Print ISSN 2278-7887, E-ISSN 2320-2343.

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