张大勇

个人信息Personal Information

教授

博士生导师

硕士生导师

主要任职:化工海洋与生命学院党委书记

性别:男

出生日期:1978-10-17

毕业院校:大连理工大学

学位:博士

所在单位:化工海洋与生命学院

联系方式:13842813145

电子邮箱:zhangdy@dlut.edu.cn

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Comparison and Cause Analysis of Ice-Induced Structural Vibrations on Different Ice-Breaking Cones

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论文类型:期刊论文

发表时间:2015-09-01

发表刊物:INTERNATIONAL JOURNAL OF OFFSHORE AND POLAR ENGINEERING

收录刊物:SCIE、EI、Scopus

卷号:25

期号:3

页面范围:205-211

ISSN号:1053-5381

关键字:Ice-induced vibration; ice force period; sea ice breaking length; sea ice bending failure mode

摘要:Ice-induced structural vibration mainly depends on the two coefficients of dynamic ice force: amplitude and period. According to the field measurement results obtained on two jacket structures installed with composite upward and downward ice-breaking cones in the Bohai Sea, the ice-induced structural vibrations vary with the ice acting position on the cone because cone shape (upward cone or downward cone and width) is one of the dominant influencing factors of the ice force period and sea ice breaking length. With the increase in the cone diameter, the ice failure mode on the upward cone was transformed from the wedge failure mode (with the long sea ice breaking length) into the plate failure mode (with the short sea ice breaking length). The plate failure mode was observed on the downward cone. When the small cone was selected, the significant difference in the dynamic ice force period was observed between upward and downward cones. When the wide cone was selected, the difference was not significant.