Research on dynamic response of pier column structures in ice-plagued area under highly seismic action
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Research on dynamic response of pier column structures in ice-plagued area under highly seismic action
Vol. 35, Issue S1, (2014)
作者机构:
北京科技大学 土木与环境工程学院,北京,100083
作者简介:
基金信息:
DOI:
CLC:U443
Online First:20 June 2014,
Published:2014
稿件说明:
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SONG Bo, NIU Li-chao, HUANG Shuai, et al. Research on dynamic response of pier column structures in ice-plagued area under highly seismic action[J]. 2014, 35(S1).
DOI:
SONG Bo, NIU Li-chao, HUANG Shuai, et al. Research on dynamic response of pier column structures in ice-plagued area under highly seismic action[J]. 2014, 35(S1).DOI:
Research on dynamic response of pier column structures in ice-plagued area under highly seismic action
The bridge piers located in the ice-plagued area are influenced by hydrodynamic pressure and dynamic ice-load under seismic action. Based on the Morison hydrodynamic theory and Croteau dynamic ice model
a simple calculating model for the time-history analysis subject to seismic effect for pier column structures in the ice-plagued area has been proposed; and its effectiveness has been verified with the shaking table test; the effect of ice mass and water depth on pier column has been analyzed as well. The results show that the maximum curvature at the bottom of pier with ice increased by 8.93 times than the case without ice. The ice mass corresponding to the maximum curvature of the cross-section at bottom of pier increased with the water depth. The maximum displacement of pier can exceed the limiting displacement easily with the increase of ice mass
which leads to a sudden collapse of bridges
and should been taken a key consideration in the aseismatic design of bridge.