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## The Effect of Spandrel Beam's Specification on Response Modification Factor of Concrete Coupled Shear Walls | ||

Civil Engineering Infrastructures Journal | ||

مقاله 3، دوره 49، شماره 1، تابستان 2016، صفحه 33-43
اصل مقاله (722.31 K)
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نوع مقاله: Research Papers | ||

شناسه دیجیتال (DOI): 10.7508/ceij.2016.01.003 | ||

نویسندگان | ||

Mussa Mahmoudi ^{} ؛ seyed Mohammad Reza Mortazavi؛ Saeid Ajdari
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^{}Shahid Rajaee Teacher Training University | ||

چکیده | ||

Response modification factor (R factor) is one of the seismic design parameters to be considered in evaluating the performance of buildings during strong motions. This paper has tried to evaluate the response modification factor of concrete coupled shear wall structures with various length/depth ratios of spandrel beams. The effect of diagonal reinforcement of spandrel beam was also evaluated on the R factor. The R factor directly depends on overstrength factor and ductility reduction factor. For this purpose, three conventional structures with 5, 10 and 15 story buildings (having various spandrel beam's length/depth ratio with and without diagonal reinforcement) were selected and the nonlinear static analyses were conducted to evaluate their overstrength and ductility reduction factors. Also for a 5-story structure, nonlinear dynamic analysis (time history) was carried out in order to compare the results with nonlinear static analysis. It was concluded that the R factors using nonlinear time history analysis and nonlinear static analysis are almost the same. The results also indicate that by increasing the height of the structure, the overstrength reduction factor decreases; while the ductility reduction factor increases. Also, the response modification factor decreases with increasing length/depth ratio of spandrel beams. The coupled shear walls with diagonal reinforcement in spandrel beams have a greater R factor. | ||

کلیدواژهها | ||

Concrete Coupled Shear Wall؛ Ductility Reduction Factor؛ Response Modification Factor؛ Overstrength Factor؛ Spandrel Beam | ||

مراجع | ||

Abdollahzadeh, G. and Malekzadeh, H. (2013). “Response modification factor of coupled steel shear walls”, Civil Engineering Infrastructures, 1(1), 15-26.
Baradaran M.Sh., Dupuis M.J., Macauley J., Elwood K.J., Anderson D.L., and Simpson R. (2014). “Seismic performance of shear wall building with gravity induced lateral demands”, 10 ^{th}U.S. National Conference on Earthquake Engineering Frontiers of Earthquake Engineering, July 21-25, 10 NCEE Anchorage, Alaska.
Bazargani, P. and Adebar, P. (2015). “Interstory drifts from shear strains at base of high-rise concrete shear walls”, Journal of Structural Engineering, 141(12), 04015067.
Bhunia, D., Prakash, V., and Pandey, A.D. (2013). A conceptual design approach of coupled shear walls, Hindawi Publishing Corporation, ISRN Civil Engineering, Article ID 161502, 28 pages.
Borzi, B. and Elnashai, A.S. (2000), “Refined force reduction factors for seismic design”, Engineering Structures, 22(10), 1244-1260.
Building and Housing Research Center. (2005). Iranian code of practice for seismic resistance design of buildings, Standard No. 2800, 3^{rd} Edition, Publisher: BHRC.
Computers and Structures Inc. (2006). PERFORM-3D, nonlinear analysis and performance assessment for 3D structures, Version 4, Publisher: CSI.
Doran, B. (2003). “Elastic-plastic analysis of R/C coupled shear walls: The equivalent stiffness ratio of the tie elements”, Journal of Indian Institute of Science, 83, 87-94.
Eljadei, A.A. (2012), “Performance based design of coupled wall structures”, Ph.D. Dissertation, Swanson School of Engineering, University of Pittsburgh, Russia.
FEMA (2000). “Prestandard and commentary for the seismic rehabilitation of building”, FEMA-356, Federal Emergency Management Agency, Washington, D.C.
Hadidi, A., Farahmand Azar, B. and Khosravi, H. (2003). “An investigation on the behavior of stiffened coupled shear walls considering axial force effect”, Journal of Structural Engineering, 22(18), 1390-1403.
Tasnimi, A.A. and Kiarash K. (2009). “Review of behavior of reinforced concrete shear walls at various performance levels”, 8 ^{th} International Congress on Civil Engineering, Shiraz University, Shiraz, Iran.
UBC-1997 (1997). Uniform building code, International Council of Building Officials (ICBO), Whittier, CA.
Hosseini, M., Sadeghi, H. and Seidali, H. (2011). “Comparing the nonlinear behaviors of steel and concrete link beams in coupled shear wall system by Finite Element analysis”, 12 ^{th}East Asia-Pacific Conference on Structural Engineering and Construction, City University of Hong Kong.
Khatami, S.M., Mortezaei, A. and Rui, C. Barros (2012). “Comparing effects of openings in concrete shear walls under near-fault ground motions”, 15, Lisbon.
^{th} World Conference on Earthquake EngineeringShahbakhti, N. and Heshmati, S. (2007). “A review the effects of reinforcement upon the degree of ductility and response modification factor of reinforced concrete shear walls with openings”, Iranian Second National Conference on Improvement and Strengthening, Kerman, Iran.
Mahmoudi, M. (2003). “The relationship between overstrength and members ductility of RC moment resisting frames”, 8Singapore.
^{th} Pacific Conference on Earthquake Engineering, Mahmoudi, M. and Zaree, M. (2010), “Evaluating response modification factors of concentrically braced steel frames”, Journal of Constructional Steel Research, 66(10), 1196-1204.
Mahmoudi, M. and Zaree, M. (2011). “Evaluating the overstrength of concentrically braced steel frame systems considering members post-buckling strength”, International Journal of Civil Engineering, 9(1), 57-62.
Meftah, S.A. and Mohri, F. (2013). “Seismic behavior of RC coupled shear walls with strengthened spandrel beams by bonded thin composite plates”, KSCE Journal of Civil Engineering, 17(2), 403-414.
McGinnis, M., Barbachyn, S., Holloman, M., and Kurama, Y. (2013). “Experimental evaluation of a multi-story post-tensioned coupled shear wall structure. Structures Congress, Pittsburgh, Pennsylvania, United States, pp. 1950-1961.
MHUD (2009). Iranian national building code (part 9): Concrete structure design, Ministry of Housing and Urban Development, Tehran, Iran.
MHUD (2009). Iranian national building code (part 6): loading, Ministry of Housing and Urban Development, Tehran, Iran.
Newmark, N.M. and Hall W.J. (1970). Seismic design criteria for nuclear reactor facilities, Report No. 46, Building Practices for Disaster Mitigation, National Bureau of Standards, U.S. Department of Commerce, pp. 209-236.
Ranjbar, M.M., Bozorgmehrnia, S. and Madandoust, R. (2013). “Seismic behavior evaluation of concrete elevated water tanks”, Civil Engineering Infrastructures Journal, 46(2), 175-188.
Whittaker, A., Hart, G. and Rojahn, C. (1999). “Seismic response modification factors”, Journal of Structural Engineering, 125(4), 438-444.
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