Vertical Seismic Response Analysis of Large Span Isolated Structures under Multi-Dimensional and Multi-Support Excitations

The multi-point random ground motion is artificially synthesized based on the triangular series method. Then the variation law and damping effect of vertical seismic response of large span isolated structures with different spans are studied respectively, under the action of both frequent earthquake...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2019-09, Vol.304 (4), p.42034
Main Authors: Gu, Zhen-yuan, Sun, Zhen, Xu, Yi-kang, Wang, Yi
Format: Article
Language:English
Subjects:
Damping
Design engineering
Earthquake dampers
Earthquakes
Ground motion
Seismic activity
Seismic response
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Summary:The multi-point random ground motion is artificially synthesized based on the triangular series method. Then the variation law and damping effect of vertical seismic response of large span isolated structures with different spans are studied respectively, under the action of both frequent earthquake and rare earthquake. The results show that in some areas of large span isolated structures, the vertical seismic responses are larger than those of non-isolated structures, under the multi-dimensional multi-point seismic input. The damping effects of large span isolated structures under rare earthquake are better than those under frequent earthquake. The area that is near the supports is prone to a large increase in response after isolation, so there should be strengthened during the engineering design.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/304/4/042034