Browse > Article
http://dx.doi.org/10.12989/eas.2016.10.4.913

Seismic evaluation of RC stepped building frames using improved pushover analysis  

Sarkar, Pradip (Department of Civil Engineering, National Institute of Technology Rourkela)
Prasad, A. Meher (Department of Civil Engineering, Indian Institute of Technology Madras)
Menon, Devdas (Department of Civil Engineering, Indian Institute of Technology Madras)
Publication Information
Earthquakes and Structures / v.10, no.4, 2016 , pp. 913-938 More about this Journal
Abstract
'Stepped building' frames, with vertical geometric irregularity, are now increasingly encountered in modern urban constructions. This paper proposes a new approach to determine the lateral load pattern, considering the contributions from the higher modes, suitable for pushover analysis of stepped buildings. Also, a modification to the displacement coefficient method of ASCE/SEI 41-13 is proposed, based on nonlinear time history analysis of 78 stepped frames. When the newly proposed load pattern is combined with the modified displacement coefficient method, the target displacement for the stepped building frame is found to match consistently the displacement demand given by the time history analysis.
Keywords
stepped building; pushover analysis; lateral load pattern; displacement coefficient method; target displacement;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 ASCE 7 (2010), Minimum Design Loads for Buildings and Other Structures, American Society of Civil Engineers.
2 ASCE/SEI 41-13 (2014), Seismic Evaluation and Retrofit of Existing Buildings, American Society of Civil Engineers, Reston, Virginia, USA.
3 ATC 40 (1996), Seismic Evaluation and Retrofit of Concrete Buildings: Vol. 1, Applied Technology Council, USA.
4 Athanassiadou, C.J. (2008), "Seismic performance of R/C plane frames irregular in elevation", Eng. Struct., 30(5), 1250-1261.   DOI
5 Carvalho, G., Bento, R. and Bhatt, C. (2013), "Nonlinear static and dynamic analyses of reinforced concrete buildings-comparison of different modelling approaches", Earthq. Struct., 4(5), 451-470.   DOI
6 Cheung, V. and Tso, W. (1987), "Lateral load analysis for buildings with setback", J. Struct. Eng., ASCE, 113(2), 209-227.   DOI
7 Chopra, A.K. and Goel, R.K. (2002), "A modal pushover analysis procedure for estimating seismic demands for buildings", Earthq. Eng. Struct. Dyn., 31(3), 561-582   DOI
8 Chopra, A.K., Goel, R.K. and Chintanapakdee, C. (2004), "Evaluation of a modified MPA procedure assuming higher modes as elastic to estimate seismic demands", Earthq. Spectra, 20(3), 757-778   DOI
9 Das, S. and Nau, J.M. (2003), "Seismic design aspects of vertically irregular reinforced concrete buildings", Earthq. Spectra, 19(3), 455-477.   DOI
10 Dolsek, M. and Fajfar, P. (2005), "Simplified non-linear seismic analysis of infilled reinforced concrete frames", Earthq. Eng. Struct. Dyn., 34(1), 49-66.   DOI
11 Elnashai, A. and Sarno, L.D. (2008), Fundamentals of Earthquake Engineering, Wiley, New York.
12 Fahjan, Y. and Ozdemir, Z. (2008), "Scaling of earthquake accelerograms for non-linear dynamic analyses to match the earthquake design spectra", 14th World Conference on Earthquake Engineering, Beijing, China.
13 FEMA 356 (2000), Prestandard and Commentary for the Seismic Rehabilitation of Existing Buildings, Federal Emergency Management Agency and American Society of Civil Engineers.
14 Gasparini, D. and Vanmarcke, E. (1976), SIMQKE-A Program for artificial Motion Generation, Department of Civil Engineering, Massachusette Institute of Technology, USA.
15 Goel, R.K. and Chopra, A.K. (1997), "Period formulas for moment resisting frame buildings", J. Struct. Eng., ASCE, 123(11), 1454-1461.   DOI
16 IS 13920 (1993), Indian Standard Code of Practice for Ductile Detailing of Reinforced Concrete Structures Subjected to Seismic Forces, Bureau of Indian Standards, New Delhi.
17 IS 1893 Part 1 (2002), Indian Standard Criteria for Earthquake Resistant Design of Structures, Bureau of Indian Standards, New Delhi.
18 IS 456 (2000), Indian Standard for Plain and Reinforced Concrete-Code of Practice, Bureau of Indian Standards, New Delhi.
19 Jan, T.S., Liu, M.W. and Kao, Y.C. (2004), "An upper-bond pushover analysis procedure for estimating the seismic demands of high-rise buildings", Eng. Struct., 26(1), 117-128.   DOI
20 Jiang, Y., Li, G. and Yang, D. (2010), "A modified approach of energy balance concept based multimode pushover analysis to estimate seismic demands for buildings", Eng. Struct., 32(5), 1272-1283.   DOI
21 Karavasilis, T.L., Bazeos, N. and Beskos, D.E. (2008), "Seismic response of plane steel MRF with setbacks: Estimation of inelastic deformation demands", J. Constr. Steel Res., 64(6), 644-654.   DOI
22 Luca, F.D., Verderame, G.M. and Manfredi, G. (2014), "Eurocode-based seismic assessment of modern heritage RC structures: The case of the Tower of the Nations in Naples (Italy)", Eng. Struct., 74, 96-110.   DOI
23 Panagiotakos, T.B. and Fardis, M.N. (2001), "Deformation of reinforced concrete members at yielding and ultimate", ACI Struct. J., 98(2), 135-148.
24 Papanikolaou, V.K., Elnashai, A.S. and Pareja, J.F. (2005), Limits of Applicability of Conventional and Adaptive Pushover Analysis for Seismic Response Assessment, Report of Mid-America Earthquake Center, University of Illinois at Urbana-Champaign.
25 Paulay, T. and Priestley, M.J.N. (1992), Seismic Design of Reinforced Concrete and Masonry Buildings, John Wiley and Sons, New York.
26 Reyes, J.C., Riano, A.C., Kalkan, E. and Arango, C.M. (2015), "Extending modal pushover-based scaling procedure for nonlinear response history analysis of multi-story unsymmetric-plan buildings", Eng. Struct., 88, 125-137.   DOI
27 Roy, R. and Mahato, S. (2013), "Equivalent lateral force method for buildings with setback: adequacy in elastic range", Earthq. Struct., 4(6), 685-710.   DOI
28 SAP 2000 (2007), Integrated Software for Structural Analysis and Design (v.11), Computers & Structures, Inc., Berkeley, California.
29 Sarkar, P. (2008), "Seismic evaluation of reinforced concrete stepped building frames", Ph.D. Thesis, Indian Institute of Technology Madras, Chennai.
30 Sarkar, P., Prasad, A.M. and Menon, D. (2010), "Vertical geometric irregularity in stepped building frames", Eng. Struct., 32(8), 2175-2182.   DOI
31 Sharooz, B.B. and Moehle, J.P. (1990), "Seismic response and design of setback buildings", J. Struct. Div., ASCE, 116(5), 2002-2014.
32 Suarez, L.E. and Montejo, L.A. (2005), "Generation of artificial earthquakes via the wavelet transform", Int. J. Solid. Struct., 42(21-22), 5905-5919.   DOI
33 Vanmarcke, E.H. and Gasparini, D.A. (1976), "Simulated earthquake motions compatible with prescribed response spectra", Report No. R76-4, Department of Civil Engineering, Massachusetts Institute of Technology Cambridge.
34 Varadharajan, S., Sehgal, V.K. and Saini, B. (2013a), "Seismic behavior of multistory RC building frames with vertical setback irregularity", Struct. Des. Tall Spec. Build., 23(18), 1345-1380.   DOI
35 Varadharajan, S., Sehgal, V.K. and Saini, B. (2013b), "Determination of inelastic seismic demands of RC moment resisting setback frames", Archiv. Civ. Mech. Eng., 13(3), 370-393.   DOI
36 Wong, C.M. and Tso, W.K. (1994), "Seismic loading for buildings with setbacks", Can. J. Civ. Eng., 21(5), 863-871.   DOI
37 Wood, S.L. (1992), "Seismic response of RC frames with irregular profiles", J. Struct. Eng., ASCE, 118(2), 545-566.   DOI