Open AccessVertical Seismic Response Analysis of Large Span Isolated Structures under Multi-Dimensional and Multi-Support Excitations
Author(s) -
Zhenyuan Gu,
Zhen Sun,
Yikang Xu,
Yi Wang
Publication year - 2019
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/304/4/042034
Subject(s) - span (engineering) , structural engineering , earthquake simulation , geology , point (geometry) , seismology , ground motion , seismic analysis , series (stratigraphy) , incremental dynamic analysis , geotechnical engineering , engineering , geometry , mathematics , paleontology
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.