Research on the Effect of Combined Seismic Isolation System

Abstract:

The isolation system between the upper structure and the foundation could reduce the seismic response of the former. A system combined of sliding and lead rubber bearings (LRB) is more effective in seismic isolation than using the later alone. In this research, the seismic responses of a building which was set with LRB and a combined system (the proportions between the sliding and LRB were 1/6, 1/4 and 1/3) respectively were analyzed and compared to that of the building without base isolation system to investigate the effect of seismic isolation. The relationship between isolation coefficient and the proportion of bearings was studied. The results show that the combined system could reduce the seismic response of structure, and it is more effective in seismic isolation if the leading bearing is relatively more.

• Periodical: Advanced Materials Research (Volumes 446-449)
• Pages: 3299-3303
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.446-449.3299
• Online since: January 2012
• Authors: Xi Sen Fan, Ting Lei Tian
• Keywords: Coefficient of Seismic Isolation, Combined Seismic Isolation System, Effect of Seismic Isolation, Proportions between the Bearings

References

[1] Zhou Xi-yuan, Han Miao, Li Da-wang, etc. seismic response Characters of parallel and series-wound isolation system [J] Earthquake resisitant engineering, 1995,17(4):1-5.

[2] Lu Xilin, Zhu Yuhua, Shi Weixing, etc. Shaking Table Test on Building Models with combined isolation sysytem [J]Journal of civil engineering, 2001,34(2):43-49.

[3] Zhu Yuhua, Lu Xilin, Analysis on the seismic respons of base isolation system [J]Journal of civil engineering, 2006.37(4):77-81

[4] Yang Shubiao, Simplified calculation of seismic response analysis of structure with compound seismic isolation devices [J]World Information On Earthquake Engineering, 2001，17（2）65-69.

[5] Li Aiqun, Mao Lijun, Seismic Response Characteristics and Optimal Parameters in R-FBI System [J] Earthquake resisitant engineering, 2005,27(2):27-31.

[6] Fan Xi-sen, Su Xiao-zu, Zhang Xin, etc. Experimental research on mechanical behavior of combined sysytem [J]J ournal of building structures, 2010,31(suppl2)50-55.

[7] Zhou Fulin, Viberation Control of Enginerring Structure[M] Seismic Publishing Company,(1997)

[8] Liu Xiaoyu, Shi Weixing, Xu Lei, Dynamic analysis on strucutre with combined isolation supports, [J] Engineering mechanics (suppl) 2001,154-158