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作者:

Li, X. (Li, X..) | Xue, S. (Xue, S..)

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摘要:

A new type of 3-dimensional seismic isolation bearing tested on shaking-table is introduced in the paper. The new bearing is combined with Teflon sliding system and helical springs in the horizontal direction, and the disc springs are utilized for seismic isolation in the vertical direction. To get the data for theoretical model, the hysteretic loops of the bearing excited by the sinusoidal excitation and recorded earthquake waves were tested in the horizontal direction, meanwhile, the performance of the bearing related to the vertical loading and input excitation was examined in details as well. In the vertical direction, the equivalent stiffness and damping ratio of the bearing which closely related to the pre-loadings was tested, and the damping ratio is 0. 1 to 0. 15, which increased with the vertical pre-loadings. It is shown that the bearing shares good performance in the horizontal and vertical direction.

关键词:

Equivalent damping ratio; Hysteretic properties; Shaking-table test; Three-dimensional seismic isolation

作者机构:

  • [ 1 ] [Li, X.]Key Lab. of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing 100124, China
  • [ 2 ] [Xue, S.]Beijing Key Lab of Earthquake Engineering and Structural Retrofit, Beijing University of Technology, Beijing 100124, China

通讯作者信息:

  • [Li, X.]Key Lab. of Urban Security and Disaster Engineering, Ministry of Education, Beijing University of Technology, Beijing 100124, China

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来源 :

World Information on Earthquake Engineering

ISSN: 1007-6069

年份: 2011

期: 3

卷: 27

页码: 1-7

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