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海洋平台地基基础变形破坏离心模拟和极限分析
Alternative TitleFailure Mechanism of Suction Foundation of Offshore Platform Based on Centrifuge Modeling and Limit Analysis
张建红; 林小静; 熊中生; 鲁晓兵
Source Publication长江科学院院报
2012-01-15
Volume29Issue:1Pages:69-73
ISSN1001-5485
Abstract吸力式基础是海洋平台的一种新型基础形式,具有承载力高、成本低、可重复使用和适应各种复杂的海洋荷载环境等优点,在近海滩涂和深海石油开发中有广泛的应用。针对中国近海地质条件和海洋环境开展吸力式基础承载特性的研究,研制了离心机上电磁式、长历时、大负载、宽频率范围激振器,实现了对结构施加循环水平动荷载。进行了一系列海洋平台吸力式基础离心模型试验,揭示了结构振动荷载作用下基础变形失稳机理,得到了荷载强度和结构刚度对基础稳定性的影响。提出了能够考虑竖向荷载、水平荷载和弯矩联合作用、基于塑性力学上限定理的桶基-地基的三维极限分析方法。
Other AbstractThe paper presents the results of centrifuge model tests performed to study the failure mechanism of suction bucket foundation of offshore platform under cyclic lateral vibration loads.Electromagnetic actuator with wide frequency range and heavy load used in the tests was developed in light of China s offshore geological conditions and ocean environments.Two failure modes might happen: liquefaction in the early excitation and settlement-induced problem after long-term excitation.However,with increased stiff...
Keyword吸力式基础 离心机 孔隙水压力
Subject Area岩体力学和土力学
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Indexed ByCSCD
Language中文
Funding Organization国家自然科学基金重点项目(51038007)
CSCD IDCSCD:4443920
DepartmentLMFS海洋土力学(LHO)
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46446
Collection流固耦合系统力学重点实验室
Corresponding Author张建红
Recommended Citation
GB/T 7714
张建红,林小静,熊中生,等. 海洋平台地基基础变形破坏离心模拟和极限分析[J]. 长江科学院院报,2012,29(1):69-73
APA 张建红,林小静,熊中生,&鲁晓兵.(2012).海洋平台地基基础变形破坏离心模拟和极限分析.长江科学院院报,29(1),69-73.
MLA 张建红,et al."海洋平台地基基础变形破坏离心模拟和极限分析".长江科学院院报 29.1(2012):69-73.
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