| 基于FLAC3D的单桩负摩阻力特性研究 |
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| 引用本文： | 孙文怀,王志强,宋少华,董金玉.基于FLAC3D的单桩负摩阻力特性研究[J].华北水利水电学院学报,2011(6):93-96. |
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| 作者姓名： | 孙文怀 王志强 宋少华 董金玉 |
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| 作者单位： | 华北水利水电学院;中国水利水电第三工程局有限公司 |
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| 基金项目： | 国家自然科学基金项目(41102203) |
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| 摘 要： | 利用FLAC3D模拟软土地基中地面堆载对桩侧负摩阻力的影响,分析不同堆载条件及加载次序下桩身轴力、单桩负摩阻力的变化规律.数值模拟结果表明,单桩在桩顶荷载作用下,桩侧负摩阻力随地面堆载等级的增大而增大；在先进行地面堆载时,桩侧负摩阻力则随着桩顶荷载等级的增大而减小.
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| 关 键 词： | 负摩阻力 变化规律 桩身轴力 FLAC3D |
Study on the Negative Skin Friction for Single Pile Based on FLAC3D |
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| SUN Wen-huai,WANG Zhi-qiang,SONG Shao-hua,DONG Jin-yu.Study on the Negative Skin Friction for Single Pile Based on FLAC3D[J].Journal of North China Institute of Water Conservancy and Hydroelectric Power,2011(6):93-96. |
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| Authors: | SUN Wen-huai WANG Zhi-qiang SONG Shao-hua DONG Jin-yu |
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| Affiliation: | 1 (1.North China Institute of Water Conservancy and Hydroelectric Power,Zhengzhou 450011,China; 2.Sinohydro Engineering Bureau 3th Co.Ltd.,Xi′an 710032,China) |
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| Abstract: | FLAC3D was used to simulate the effect of surcharge loads on the negative skin friction of pile foundation in soft ground.Then the characteristics of axial load along pile and negative skin friction of single pile were analyzed under the different surcharge loading and loading sequence conditions.Through the numerical simulation,it was proved that the negative skin friction of single pile increases with the surface load grade increasing under the pile head load.However,the negative skin friction of single pile decreases with the pile head load increasing when the surcharge is firstly loaded. |
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| Keywords: | negative skin friction variation law axial load along pile FLAC3D |
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