Browse > Article
http://dx.doi.org/10.12989/scs.2013.14.4.349

Parametric study on equivalent damping ratio of different composite structural building systems  

Farghaly, Ahmed Abdelraheem (Civil and Architecture Building Department, Faculty of Industrial Education, Sohag University)
Publication Information
Steel and Composite Structures / v.14, no.4, 2013 , pp. 349-365 More about this Journal
Abstract
Structures consisting of concrete and steel parts, which are irregular in damping ratios are investigated. This investigation is a code-based seismic design of such structures. Several practical difficulties encountered, due to inherent differences in the nature of dynamic response of each part, and the different damping ratios of the two parts. These structures are irregular in damping ratios and have complex modes of vibration so that their analysis cannot be handled with the readily available commercial software. Therefore, this work aims to provide simple yet sufficiently accurate constant values of equivalent damping ratios applied to the whole structure for handling the damping irregularity of such structures. The results show that the equivalent damping ratio changes with the height of the building and the kind of the structural system, but it is constant for all accelerations values. Thus, available software SAP2000 applied for seismic analysis, design and the provisions of existing seismic codes. Finally, evaluation of different kinds of structural system used in this research to find the most energy dissipating one found by finding the best value of quality coefficient.
Keywords
mixed structure; SAP2000; quality coefficient; damping coefficient; equivalent damping coefficient; better seismic energy dissipating;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Taranath, B.S. (2005), Wind and Earthquake Resistant Buildings: Structural Analysis and Design, Mercel Dekker, NY, USA.
2 Veletsos, A.S. and Ventura, C.E., (1986), "Modal analysis of non-classically damped linear systems," Earthquake Eng. Struct. Dyn., 14(2), 217-243.   DOI
3 Viest, I.M., Colaco, J.P., Furlong, R.W., Griffs, L.G., Leon, R.T., Wyllie, L.A. (1997), Composite Construction Design for Buildings, ASCE Press, New York, N.Y., USA.
4 Villaverde, R. (2008), "A complex modal superposition method for the seismic analysis of structures with supplemental dampers", Proceedings of the 14th World Conference on Earthquake Engineering, 14WCEE, Beijing, China, October.
5 Yiqun, W., Xiangquan, T. and Guoting, A.N. (2005), "Earthquake analysis for the system of RC building with a steel tower", Transactions of Tianjin University, 11(5), 376-380.
6 Williamm, McC. Siebert (2006), Circuits, Signals, and Systems, MIT Press.
7 Wilson, E.L. (2004), Static and Dynamic Analysis of Structures, (4th Ed.) Berkeley, CA, Computers and Structures, Inc.
8 Yukio, I., Hiroyuki, Y., Isao, N. and Yasunaga, F. (1988), "Seismic behavior of girder-to-column connections developed for an advanced mixed structure system", Proceedings of 9th World Conference on Earthquake Engineering, Tokyo-Kyoto, Japan.
9 Alessandro, Z., Michele, B. and Conte, J.P. (2008), "Nonlinear seismic response analysis of steel-concrete composite frames", J. Struct. Eng., 134(6), 986-997.   DOI   ScienceOn
10 Chopra, A.K. (2005), Dynamics of Structures: Theory and Applications to Earthquake Engineering, 2nd Ed. Prentice-Hall of India, New Delhi, India.
11 Clough, R.W. and Mojtahedi, S. (1976), "Earthquake response analysis considering non-proportional damping", Earthquake Eng. Struct. Dyn., 4(5), 489-496.   DOI   ScienceOn
12 CSI (2009), CSI Analysis Reference Manual for SAP2000, ETABS and SAFE, Computers and Structures, Inc., Berkeley, CA, USA.
13 Di Sarno, L. and Elnashai, A.S. (2008), Fundamentals of Earthquake Engineering $(R)$ 2008 John Wiley & Sons, Ltd. Available Online: http://media.wiley.com/product_data/excerpt/36/04700248/0470024836.pdf
14 El-Tawil, S. and Deierlein, G.G. (2001), "Nonlinear analysis of mixed steel-concrete frames, I: Element formulation", J. Struct. Eng., ASCE, 127(6), 647-655.   DOI   ScienceOn
15 ECCS (1995), Multi-storey buildings in steel: design guide for slim floors with built-in beams, ECCS, Brussels.
16 Udwadia, F.E. and Esfandiari, R.S. (1990) "Nonclassically damped dynamic systems: An iterative approach", J. Appl. Mech., 57, 423-433.   DOI
17 Huang, B.C., Leung, A.Y.T., Lam, K.L. and Cheung, V.K. (1996), "Analytical determination of equivalent modal damping ratios of a composite tower in wind-induced vibrations", J. Comput. Struct., 59(2), 311-316.   DOI   ScienceOn
18 Mullett, D.L. (1998), Composite floor system, Blackwell Science, Ltd., Oxford.
19 Rao, M. and Qiu, H.M. (1993), Process Control Engineering: A textbook for chemical, mechanical and electrical engineers, CRC Press, ISBN 978-2-88124-628-9.
20 Oehlers, D.J. and Bradford, M.A. (1995), Composite steel and concrete structural members: fundamental behavior, Elsevier Science Inc., New York, N.Y.
21 Parra-Montesinos, G. and Wight, J.K. (2001), "Modeling shear behavior of hybrid RCS beam-column connections", J. Struct. Eng., 127(1), 3-11.   DOI   ScienceOn
22 Papageorgiou, A.V. and Gantes C.J. (2011), "Equivalent uniform damping ratios for linear irregularly damped concrete/steel mixed structures", Soil Dyn. Earthquake Eng., 31(3), 418-430.   DOI   ScienceOn
23 Singh, M.P. and Ghafory-Ashtiany, M. (1986), "Modal time history of non-classically damped structures for seismic motions", Earthquake Eng. Struct. Dyn., 14(1), 133-146.   DOI
24 Spanos, P.D., Cao, T., Jacobson, C., Nelson, D. and Hamilton, D. (1988), "Decoupled dynamic analysis of combined systems by iterative determination of interface accelerations", Earthquake Eng. Struct. Dyn., 16, 491-500.   DOI