Analyzing Method Based on the Average Power of the Input Energy into Sliding Isolation System

Abstract:

An analyzing method is proposed to achieve a better study about the energy change which is inputted into a sliding base seismic-isolation system within any range of period during an earthquake. The proposed method is based on the average power index of the input energy into the sliding isolation system, and the corresponding formula are derived. The average power index is numerically estimated and analyzed for the different sliding isolation systems under a varity of conditions with the different duration period and friction coefficient. It is shown that the average input power depends strongly on the friction coefficient, and it can well reflect how much average energy are inputted in the sliding isolation system within any range of duration. So, the analyzing method based on the average power can be well used to study the natural property of the earthquake.

• Periodical: Applied Mechanics and Materials (Volume 470)
• Pages: 998-1002
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.470.998
• Online since: December 2013
• Authors: Min Sun*, Yu Zhou Sun, Lei Li
• Keywords: Average Input Power, Friction Coefficient (FC), Seismic-Isolation, Sliding Isolation System

References

[1] Emre Abali, Eren Uckan. Parametric analysis of liquid storage tanks base isolated by curved surface sliding bearings, Soil Dynamic and Earthquake Engineering 30(1) (2010) 21-31.

DOI: 10.1016/j.soildyn.2009.08.001

[2] Muhannad Y. Fakhouri, Akira lgarashi. Dynamic response control of multi-story structures by isolators with multiple plane sliding surfaces: A parametric study, Engineering Structures (34)(2012) 81-94.

DOI: 10.1016/j.engstruct.2011.08.042

[3] A. Di Egidio,A. Contento. Base isolation of slide-rocking non-symmetric rigid blocks under impulsive and seismic excitations, Engineering Structures 31(11)(2001) 2723-2734.

DOI: 10.1016/j.engstruct.2009.06.021

[4] XIE Yi-ke, YE Xian-guo. Analysis of the energy response of base-isolated structures, Journal of Hefei University of Technology(Natural Science) 29(11)(2006) 1425-1429.

[5] Wang Jian-qiang, Zhao Zhuo, Ding Yong-gang, etc. Energy response analysis for base-isolated structures with a friction pendulum system under multi-axial ground motions, Journal of Vibration and Shock 30 (5)(2011) 241-244.

[6] Fajfar P, Vidic T, Fischinger M. On energy demand and supply in SDOF system, Elsevier Applied Science () (1992) 12~18.

[7] Cenk Alhan, Henri Gavin. A parametric study of linear and non-linear passively damped seismic isolation systems for buildings, Engineering Structures (26) (2004) 485-497.

DOI: 10.1016/j.engstruct.2003.11.004

[8] Young-Suk Kim, Chung-Bang Yun. Seismic response characteristics of bridges using double concave friction pendulum bearings with tri-linear behaviour, Engineering Structures 29 (11) (2007) 3082-3093.

DOI: 10.1016/j.engstruct.2007.02.009

[9] F. Khoshnoudian,A. Hemmati. Seismic Response of Base-isolated Structures using DCFP Bearings with Tri-Linear and Bi-Linear Behaviours, Procedia Engineering (14) (2011) 3027-3035.

DOI: 10.1016/j.proeng.2011.07.381

[10] Gong Mao-sheng, Xie Li-li, Zhang Wen-bo. Attenuation of input energy of strong ground motion, Earthquake Engineering and Engineering Vibration 23(3)(2003)15-24.