|Table of Contents|

Dynamic Response Characteristics of Steel Frame House Structure on Semi-submersible Platform Under Ocean Environmental Load(PDF)

《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

Issue:
2022年05期
Page:
22-31
Research Field:
结构工程
Publishing date:

Info

Title:
Dynamic Response Characteristics of Steel Frame House Structure on Semi-submersible Platform Under Ocean Environmental Load
Author(s):
LI Fu-min;  LIU Yong-qiang;  ZHAO Jie;  GUO Zhen
(Jiangsu Key Laboratory of Environmental Impact and Structural Safety in Engineering, China University of Mining and Technology, Xuzhou 221008, Jiangsu, China)
Keywords:
offshore platform;  ocean environmental load;  top structure;  steel frame;  dynamic response
PACS:
TU391
DOI:
10.19815/j.jace.2021.05070
Abstract:
The steel frame house structure on the semi-submersible platform suitable for 1000 m deep sea was taken as the research object. Firstly, the finite element method was used to simulate the dynamic time-history response of three-story, six-story and nine-story top structures under the ocean environmental load of one-hundred-year return period sea condition, and the suitable recommended height was obtained. Then the dynamic time-history response of the recommended height structure under the actions of both land earthquake and ocean environmental load was simulated by finite element method, and the results of dynamic time-history response under the two supporting conditions and action modes were compared. The results show that, under the ocean environmental load, the dynamic response levels of the three-story and six-story structures are relatively small and the difference is not big, while the dynamic response level of the nine-story structure is significantly higher than that of the six-story structure due to the large influence of sea breeze and structural slant. Thus the six-story height is selected as the recommended height. The dynamic response levels of the six-story steel frame house structure under the four-month return period ocean environmental load and 8 degrees frequent earthquake are similar, while the dynamic response level of even one-hundred-year return period ocean environmental load is lower than that of 8 degrees rare earthquake. The research findings can provide a reference for the design of the top structures on offshore platform.

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Last Update: 2022-09-30