Seismic force modification factors for partitions in flow-rise reinforced concrete buildings

Document Type : Article

Authors

1 Department of Civil Engineering, Sharif University of Technology, Kish Island, Iran.

2 Department of Civil Engineering, Sharif University of Technology, Tehran, Iran.

Abstract

Present codes of practice do not consider the effect of arrangement of partitions in the plan of structure on the seismic demands of these non-structural components. In this paper, a modification factor has been proposed to modify provisions for those seismic demands. Seventy two regular low-rise reinforced concrete moment frames, supporting some partitions, exposed to seven appropriate ground motions. The nonlinear seismic response history analysis considering out-of-plane behavior of partitions has been conducted using the OpenSees platform. The average values of peak responses from those earthquakes were obtained. The forces generated using the analytical method, which some of them verified with existing study results, were compared with the values from the code and a factor denoted as seismic force modification factor, W, was proposed. A parametric study has been carried out to study the effect of dominent parameters such as the arrangement of partitions, partition to structure height ratio, and length to height ratio of partitions on the W values. For the majority of the models, the W values are larger for partitions located further with respect to the center of floor. Moreover the modification factor could be as large as 1.85 for the partitions located in the middle floors.

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Main Subjects

References

References:
1. Marsantyo, R., Shimazu, T., and Araki, H. "Dynamic response of nonstructural systems mounted on  floors of buildings", 12th World Conference on Earthquake Engineering, Auckland, New Zealand (2000).
2. Lepage, A., Shoemaker, J.M., and Memari, A.M. "Accelerations of nonstructural components during nonlinear seismic response of multistory structures", Journal of Architectural Engineering, ASCE, 18, pp. 285-297 (2012).
3. Sankaranarayanan, R. and Medina, R.A. "Acceleration response modification factors for nonstructural components attached to inelastic moment-resisting frame structures", Earthquake Engineering and Structural Dynamics, 36, pp. 2189-2210 (2007).
4. Sankaranarayanan, R. "Seismic response of acceleration-sensitive nonstructural components mounted on moment-resisting frame structures", Ph.D. Dissertation, Maryland University, College Park (2007).
5. Aldeka, A., Chan, A.H.C., and Dirar, S. "Effects of torsion on the behavior of non-structural components mounted on irregular reinforced concrete multi-story buildings", 4th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Kos Island, Greece (2013).
6. Aldeka, A.B., Chan, A.H.C., and Dirar, S. "Response of non-structural components mounted on irregular RC buildings: comparison between FE and EC8 predictions", International Journal of Earthquakes and Structures, 6(4), pp. 351-373 (2014).
7. Aldeka, A., Dirar, S., Chan, A.H.C., and Martinez- Vazquez, P. "Seismic response of non-structural components attached to reinforced concrete structures with different eccentricity ratios", International Journal of Earthquakes and Structures, 8(5), pp. 1069-1089 (2015).
8. Govalkar, V., Salunke, P.J., and Gore, N.G. "Analysis of bare frame and infilled frame with different position of shear wall", International Journal of Recent Technology and Engineering, 3(3), pp. 67-72 (2014).
9. Mahmud, K., Islam, M.R., and Al-Amin, M. "Study the reinforced concrete frame with brick masonry infill due to lateral loads", International Journal of Civil and Environmental Engineering, 10(4), pp. 35- 40 (2010).
10. Shaharban, P.S. and Manju, P.M. "Behavior of reinforced concrete frame with in-fill walls under seismic loads using etabs", International Journal of Civil Engineering and Technology, 5(12), pp. 181-187 (2014).
11. Niruba, S., Boobalakrishnan, K.V., and Gopalakrishnan, K.M. "Analysis of masonry infill in a multistoried building", International Refereed Journal of Engineering and Science, 3(3), pp. 26-31 (2014).
12. Agrawal, N., Kulkarni, P.B., and Raut, P. "Analysis of masonry infilled RC frame with and without opening including soft story by using equivalent diagonal strut method", International Journal of Scientific and Research Publications, 3(9), pp. 1-8 (2013).
13. Tekeli, H. and Aydin, A. "An experimental study on the seismic behavior of infilled RC frames with opening", Scientia Iranica, 24(5), pp. 2271-2282 (2017).
14. Razzaghi, M.S. and Javidnia, M. "Evaluation of the effect of infill walls on seismic performance of RC dual frames", Int. J. Adv. Struct. Eng., 7, pp. 49-54 (2015).
15. Mohammadi, Gh.M. and Yasrebi, F. "Out of plane behavior of walls using rigid block concepts", International Journal of Structural Engineering and Mechanics, 34(3), pp. 335-350 (2010).
16. Preti, M., Migliorati, L., and Giuriani, E. "Experimental testing of engineered masonry infill walls for postearthquake structural damage control", Bull. Earthquake Eng., 13, pp. 2029-2049 (2015).
17. ASCE/SEI 7-10, Minimum Design Loads for Buildings and Other Structures, American Society of Civil Engineers, Reston, VA, USA (2010).
18. Building & Housing Research Center, Iranian Code of Practice for Seismic Resistant Design of Buildings, Standard No. 2800-14, 4th Edn., BHRC publication, Tehran, Iran (2014).
19. ACI 318M-99, Building Code Requirements for Structural Concrete, American Concrete Institute, USA (1999).
20. Kadysiewski, S. and Mosalam, K.M. "Modelling of unreinforced masonry infill walls considering in-plane and out of plane interaction", Pacific Earthquake Engineering Research Center, Report No. 2008/102, College of Engineering, University of California, Berkeley, California, U.S. (2009).
21. Nwofor, T.C. "Modified stiffness matrix method for macro-modelling of infilled reinforced concrete frames", International Journal of Civil and Environmental Engineering, 12(2), pp. 53-73 (2012).
22. FEMA-356, Prestandard and Commentary for the Seismic Rehabilitation of Buildings, Building Seismic Safety Council, Washington D.C., USA (2000).
23. Sabu, D.J. and Pajgade, P.S. "Seismic evaluation of existing reinforced concrete building", International Journal of Scientific and Engineering Research, 3(6), pp. 1-8 (2012).
24. Kakaletsis, D. "Analytical modelling of masonry infills with openings", International Journal of Structural Engineering and Mechanics, 31(4) (2009).
25. Mohebbi, M. and Joghataei, A. "Optimal TMDs for improving the seismic performance of historical buildings", International Journal of Science and Technology, Scientia Iranica, 23(1), pp. 79-90 (2016).
26. Eshghi, S. and Sarrafi, B. "Effect of openings on lateral stiffness and strength of confined masonry walls", International Journal of Science and Technology, Scientia Iranica, 21(3), pp. 457-468 (2014).
27. Furtado, A., Rodrigues, H., and Arede, A. "Modelling of masonry infill walls participation in the seismic behavior of RC buildings using OpenSees", Int. J. Adv. Struct. Eng., 7, pp. 117-127 (2015).
28. Mazzoni, S., McKenna, F., Scott, M.H., Fenves, G.L., et al., Open System for Earthquake Engineering Simulation, OpenSees Command Language Manual (2006).
29. Mander, J., Priestley, M., and Park, R. "Theoretical stress-strain model for confined concrete", Journal of Structural Engineering, ASCE, 114(8), pp. 1804-1826 (1988).
30. Menegotto, M. and Pinto, P.E. "Method of analysis for cyclically loaded RC plane frame including changes in geometry", IABSE, Preliminary Report No.13, pp. 15-22 (1973).
31. Villaverde, R. "Approximate procedure for the seismic nonlinear analysis of nonstructural components in buildings", J. JSEE., 7(1), pp. 9-24 (2005).
Scientia Iranica
Volume 26, Issue 6 - Serial Number 6
Transactions on Civil Engineering (A)
November and December 2019
Pages 3097-3108

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History

  • Receive Date: 18 December 2016
  • Revise Date: 28 October 2017
  • Accept Date: 19 February 2018

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