| 不同桩长扩底抗拔桩极限承载力的统一计算模式 |
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| 引用本文： | 黄茂松,王向军,吴江斌,王卫东.不同桩长扩底抗拔桩极限承载力的统一计算模式[J].岩土工程学报,2011(1):63-69. |
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| 作者姓名： | 黄茂松 王向军 吴江斌 王卫东 |
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| 作者单位： | 同济大学地下建筑与工程系;同济大学岩土及地下工程教育部重点实验室;华东建筑设计研究院; |
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| 基金项目： | 国家杰出青年科学基金项目(50825803); 上海市科委重大科技项目(07dz12006) |
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| 摘 要： | 基于有限元数值模拟分析以及相关文献成果,提出了一个适用于不同桩长扩底抗拔桩极限承载力的统一计算模式.在极限状态下,扩大头处形成椭圆状局部破坏;而等截面段形成幂函数形式的曲线破裂面,幂函数曲线破裂面形状取决于土层及桩型参数.提出扩大头影响高度H1的概念,由扩底抗拔桩足尺试验数据,拟合出一个适合上海等软土地区扩底抗拔桩扩大...
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| 关 键 词： | 扩底抗拔桩 极限承载力 数值模拟 极限平衡法 |
Unified approach to estimate ultimate bearing capacity of uplift piles with enlarged base |
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| HUANG Mao-song,WANG Xiang-jun,WU Jiang-bin,WANG Wei-dong.Unified approach to estimate ultimate bearing capacity of uplift piles with enlarged base[J].Chinese Journal of Geotechnical Engineering,2011(1):63-69. |
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| Authors: | HUANG Mao-song WANG Xiang-jun WU Jiang-bin WANG Wei-dong |
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| Affiliation: | HUANG Mao-song1,2,WANG Xiang-jun1,WU Jiang-bin3,WANG Wei-dong3(1.Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China,2.Key Laboratory of Geotechnical and Underground Engineering of Ministry of Education,3.East China Architectural Design Institute,Shanghai 200002,China) |
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| Abstract: | Based on numerical analysis and previous study results,a unified analysis model is established to estimate the ultimate bearing capacity of uplift piles with enlarged base.Under the limit state,it is supposed to form an elliptic local failure mode on the enlarged base,while in the straight shaft,a power function of slip surface is assumed.The failure curve is related to the soil properties and the pile sizes.A concept of H1 is presented,which is the height influenced by the enlarged base.It is an important ... |
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| Keywords: | uplift pile with enlarged base ultimate bearing capacity numerical simulation limit equilibrium method |
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