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- Title
含初始转角的隔震支座在双层柱面网壳 结构中的隔震性能.
- Authors
徐忠根; 赵亚涛; 张杰; 李文杰
- Abstract
In order to study the problem of bearing rotation in large span spatial structures, the horizontal seismic response analysis of double-layer cylindrical reticulated shell structure with rubber isolation bearing with initial rotation angle was carried out in the horizontal direction. The horizontal performance of the rubber isolation bearing was modified by combining the empirical formula obtained from the experiment, and the dynamic time-history analysis method was applied by SAP2000 to analyze the parameters of the rubber isolation bearing with the initial rotation angle considering the situation of the lower supporting structure. The results show that the peak shear force and peak acceleration at the bottom of the base isolation bearing with small corners will decrease under the action of horizontal earthquake. As the angle of rotation increases, the peak acceleration at the top of the column and the peak shear force at the bottom of the isolation bearing rapidly increase. However, the reticulated shell structure with large span height ratio will amplify the influence of the initial rotation angle on the structure, increase the peak acceleration of the whole structure and the peak displacement of the structural column, but limit the peak displacement of the upper reticulated shell structure. Therefore, when the initial rotation angle is considered, the amplification effect of the span-height ratio of the lattice structure should be taken into consideration when the acceleration or displacement of the lattice structure needs to be limited.
- Publication
Science Technology & Engineering, 2023, Vol 23, Issue 33, p14287
- ISSN
1671-1815
- Publication type
Article