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文摘
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Suction bucket foundations are widely used in the offshore platform for the exploitation of the offshore petroleum and natural gas resources. During winter seasons, ice sheets formed in Bohai Bay will impose strong impact and result in strong vibration on the platform. This paper describes a dynamic loading device developed on the geotechnical centrifuge and its application in modeling suction bucket foundation under the equivalent ice-induced vibration loadings. Some experimental results are presented. It is shown that when the loading amplitude is over a critical value, the sand at the upper part around the bucket softens or even liquefies. The excess pore pressure decreases from the upper part to the lower part of the sand foundation in vertical direction while decreases from near to far away from the bucket's side wall in the horizontal direction. Large settlements of the bucket and the sand around the bucket occur under the horizontal dynamic loading. The dynamic responses of the bucket with smaller size are heavier. |
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其他语种文摘
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吸力式桶形基础广泛地应用于海洋油气开发的海洋平台. 在冬季,渤海冰排会对平台产生强烈的冲击,引起振动.本文介绍了一套用于土工离心机实验的动力加载设备,并介绍了该套设备在模拟吸力式桶形基础在受到等效动冰载作用下的响应的实验研究情况及实验结果.结果表明,当载荷幅值超过一个临界值时,地基上部会发生软化甚至液化.超孔隙水压从土体上部到下部,从桶形基础壁面到远处逐渐减小.在动载荷作用下,桶形基础和临近土体会发生大的沉降.桶形基础尺寸越小,动载荷响应越大. |
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来源
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实验力学
,2006,21(4):439-446 【核心库】
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关键词
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suction bucket foundation
;
dynamic loading device
;
ice-induced vibration
;
centrifuge modeling
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地址
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1.
Institute of Mechanics, China Academy of Science, Beijing, 100080
2.
Department of Hydraulic Engineering, Tsinghua University, Beijing, 100084
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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1001-4888 |
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学科
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建筑科学 |
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基金
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中国科学院-中国海洋石油总公司合作项目
;
国家自然科学基金
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文献收藏号
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CSCD:2414287
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1.
Clukey E C. The response of suction caissons in normally consolidated clays to cyclic TLP loading conditions[C].
Proc Offshore Tech Conf,1995:909-918
|
CSCD被引
1
次
|
|
|
|
|
2.
Allersma H G B. Simulation of suction pile installation in sand in a geocentrifuge[C].
7th Int.Offshore and polar engrg.Conf,1997,1:761-765
|
CSCD被引
1
次
|
|
|
|
|
3.
Allersma H G B. Centrifuge modeling on suction piles under cyclic and long term vertical loading[C].
Proc Offshore Tech Conf,2000:334-341
|
CSCD被引
1
次
|
|
|
|
|
4.
Senpere D. Suction anchor piles-a proven alternative to driving or drilling[C].
Proc Offshore Tech Conf,1982:483-493
|
CSCD被引
1
次
|
|
|
|
|
5.
Aas P M. Skirted foundation for offshore structure[C].
9th Offshore South East Asia Conf,1992:1-7
|
CSCD被引
2
次
|
|
|
|
|
6.
Dyme W. Drained behavior of suction caisson on very dense sand[C].
Proc Offshore Tech Conf,1998:765-782
|
CSCD被引
1
次
|
|
|
|
|
7.
Tjelta T L. The skirt piled gullfaks c platform installation[C].
Proc Offshore Tech Conf,1990:453-462
|
CSCD被引
1
次
|
|
|
|
|
8.
Bye A. Geotechnical design of bucket foundation[C].
Proc Offshore Tech Conf,1995:869-883
|
CSCD被引
1
次
|
|
|
|
|
9.
Ding H Y. Estimating soil liquefaction in ice-induced vibration of bucket foundation[J].
J Cold Reg,2003,17(2):60-67
|
CSCD被引
7
次
|
|
|
|
|
10.
Lu Xiaobing. Progress in the study on the bucket foundation of offshore platform[J].
Advances in Mechanics (in Chinese),2003,33(1):27-40
|
CSCD被引
3
次
|
|
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