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Sensitivity and Reliability Analysis of Masonry Infilled Frames

Authors: Avadhoot Bhosale, Robin Davis P., Pradip Sarkar


The seismic performance of buildings with irregular distribution of mass, stiffness and strength along the height may be significantly different from that of regular buildings with masonry infill. Masonry infilled reinforced concrete (RC) frames are very common structural forms used for multi-storey building construction. These structures are found to perform better in past earthquakes owing to additional strength, stiffness and energy dissipation in the infill walls. The seismic performance of a building depends on the variation of material, structural and geometrical properties. The sensitivity of these properties affects the seismic response of the building. The main objective of the sensitivity analysis is to found out the most sensitive parameter that affects the response of the building. This paper presents a sensitivity analysis by considering 5% and 95% probability value of random variable in the infills characteristics, trying to obtain a reasonable range of results representing a wide number of possible situations that can be met in practice by using pushover analysis. The results show that the strength-related variation values of concrete and masonry, with the exception of tensile strength of the concrete, have shown a significant effect on the structural performance and that this effect increases with the progress of damage condition for the concrete. The seismic risk assessments of the selected frames are expressed in terms of reliability index.

Keywords: Fragility curve, sensitivity analysis, reliability index, RC frames.

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[1] A. Singhal and A. S. Kiremidjian.“Method for probabilistic evaluation of seismic structural damage”, Journal of Structural Engineering, 122(12), pp.1459–1467, 1996.
[2] C. A. Cornell, F. Jalayer, R. O. Hamburger and D. A. Foutch. “The probabilistic basis for the 2000 SAC/FEMA steel moment frame guidelines”, Journal of Structural Engineering, 128(4), pp.526-533, 2002.
[3] Indian Standard. Indian standard criteria for earthquake resistant design of structures. IS 1893-02, Bureau of Indian Standards, New Delhi, India, 2002.
[4] S. H. Kim, and M. Shinozuka, “Development of fragility curves of bridges retrofitted by column jacketing”, Probabilistic Engineering Mechanics, 19(1-2), pp.105–112, 2004.
[5] G. Lupoi, “Fragility analysis of the seismic response of freestanding equipment”, Ph.D dissertation, European School of Advanced studies in Reduction of Seismic Risk- Rose school, 2005.
[6] M. S. Kircil, and Z. Polat.“Fragility analysis of mid-rise R/C frame buildings”, Engineering Structures, 28(9), pp.1335-1345, 2006.
[7] O.S. Kwon and A. Elnashai. “The effect of material and ground motion uncertainty on the seismic vulnerability curves of RC structure”, Engineering Structures, 28, pp.289–303, 2006.
[8] N. D. Lagaros, “Probabilistic fragility analysis: A tool for assessing design rules of RC buildings”, Earthquake engineering and engineering vibration, 7(1), pp.45–56, 2008.
[9] J. H. Kim, I. Choi, and J. Park. “Uncertainty analysis of system fragility for seismic safety evaluation of NPP”, Nuclear Engineering and Design, 241(7), pp. 2570–2579, 2010.
[10] O.C. Celik, and B.R. Ellingwood. “Seismic fragilities for non-ductile reinforced concrete frames – Role of aleatoric and epistemic uncertainties”, Structural Safety 32, pp.1–12, 2010.
[11] C.C. Mitropoulou, N.D. Lagaros, and M. Papadrakakis. “Life-cycle cost assessment of optimally designed reinforced concrete buildings under seismic actions”, Reliability Engineering and System Safety, 96, 1311–1331, 2011.
[12] D. Celarec, P. Ricci, and M. Dolšek. "The sensitivity of seismic response parameters to the uncertain modelling variables of masonry-infilled reinforced concrete frames." Engineering Structures, 35, pp.165-177, 2012.
[13] D. Celarec, and M. Dolsek, “The impact of modelling uncertainties on the seismic performance assessment of reinforced concrete frame buildings”, Engineering Structures, 52, 340–354, 2013.
[14] J. Kim and S. Han. "Sensitivity analysis for seismic response of reinforced concrete staggered wall structures." Magazine of Concrete Research 65, no. 22, pp. 1348-1359, 2013.
[15] OpenSees. Open system for earthquake engineering simulation”, A Program for Static and Dynamic Nonlinear Analysis of Structures. (Online). < >, July 20-21, 2016.
[16] R. Davis P, H. Pragalath D.C., P. Sarkar. “Open Ground Storey Buildings designed as per various International Codes – A Seismic Performance Comparison Study” Recent Innovation in Civil Engineering & Technology, Sep 24-25, 2014.
[17] N. Panandikar and K.S. Babunarayan. “Sensitivity of Pushover Curve to Material and Geometric Modelling—An Analytical Investigation”, ISTRUC-19; 21, pp.91- 97, 2015.