| Spar平台吸力式基础极限承载特性数值分析 |
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| 引用本文： | 王 志,杜守继,王德禹.Spar平台吸力式基础极限承载特性数值分析[J].海洋工程,2009,27(3):54-61. |
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| 作者姓名： | 王 志 杜守继 王德禹 |
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| 作者单位： | 1. 上海交通大学,船舶海洋与建筑工程学院,上海,200240
2. 上海交通大学,船舶海洋与建筑工程学院,上海,200240;上海交通大学,海洋工程国家重点实验室,上海,200240 |
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| 基金项目： | "863计划"资助项目 |
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| 摘 要： | 以国外某深海Spar平台工程为背景,针对其所采用的细长型吸力式基础的抗拔承载特性进行三维有限元数值分析.分析中充分考虑土体强度、加载位置和加载角度对吸力式基础极限抗拔承载力的影响,本构模型中钢筒基础采用弹塑性模型.分析结果表明,吸力式基础的极限抗拨承载力随着土体强度的增大而增大,倾斜加载时在基础插入土体部分中点左右加载可取得最大的极限承载力,极限抗拔承载力还随着加载角度的增大而增大.吸力式基础存在倾斜加载时桶基础与桶内外土体的共同塑性屈服破坏和垂直加载时桶外土体的局部剪切破坏等两种不同的破坏模式.
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| 关 键 词： | Spar平台 吸力式基础 极限抗拔承载力 数值分析 |
Numerical analysis of the ultimate bearing capacity behavior of Spar platform'ssuction foundation |
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| WANG Zhi,DU Shou-ji,WANG De-yu.Numerical analysis of the ultimate bearing capacity behavior of Spar platform''ssuction foundation[J].Ocean Engineering,2009,27(3):54-61. |
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| Authors: | WANG Zhi DU Shou-ji WANG De-yu |
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| Institution: | 1.School of Naval Architecture;Ocean and Civil Engineering;Shanghai Jiao Tong University;Shanghai 200240;China;2.State Key Laboratory of Ocean Engineering;China |
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| Abstract: | Based on the background of a deep sea Spar platform abroad,the three-dimensional finite element numerical analysis of the pull-out capacity behavior of the platform's tall and slender suction foundation is presented.The effects of soil strength,load positions and load angles on the ultimate pull-out resistance of the suction foundation are fully considered in the numerical analysis,and the elastic-plastic model is used in the constitutive model of steel container.The analysis results indicate that the ultim... |
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| Keywords: | Spar platform suction foundation ultimate pull-out capacity numerical analysis |
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