Study on the Effect of Modified Differential Restoring Force Model on Seismic Response of Isolation Structure

Abstract:

Based on the compression-shear tests of different specifications LRBs (diameter 700mm,1000mm,1100mm) and shear strain correlation formula, the modified differential restoring force model (modified Bouc-Wen model) is suggested to simulate LRB. An isolated model, nine-story superstructure, is used as the numerical example. Using the unmodified and the modified differential restoring force model of the LRB, the differences of the seismic response of isolated structure are studied by numerical analysis and comparison. Result shows that, unmodified differential restoring force model commonly used in isolation design, except for acceleration response, other earthquake response has not significant error.

• Periodical: Applied Mechanics and Materials (Volumes 501-504)
• Pages: 1619-1622
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.501-504.1619
• Online since: January 2014
• Authors: Jian Min Jin*, Ping Tan, Xiang Yun Huang, Yan Hui Liu
• Keywords: Compression-Shear Test, Lead Rubber Bearing (LRB), Modified Differential Restoring Force Model, Seismic Response, Shear Strain Dependency

References

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[3] Guide of ETABS-Chinese version(China architecture&building Press, Beijing 2004).

[4] Jianmin Jin, Fulin Zhou and Ping Tan: Engineering Mechanics, Vol. 27(2010) No. 10, p.7 (in Chinese).