| 大直径灌注桩桩侧摩阻力试验研究 |
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| 引用本文： | 顾培英,王德平,吕惠明.大直径灌注桩桩侧摩阻力试验研究[J].公路交通科技,2004,21(1):62-66. |
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| 作者姓名： | 顾培英 王德平 吕惠明 |
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| 作者单位： | 1. 南京水利科学研究院,江苏,南京,210029
2. 苏州市绕城高速公路建设指挥部,江苏,苏州,215007 |
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| 摘 要： | 根据苏州地区4根大直径桥梁钻孔灌注桩桩侧摩阻力试验结果,给出了该地区主要土层的侧摩阻力及其极限摩阻力建议值。试验表明:相当一部分桩侧土层未能达到极限状态,只有54 5%～78 4%范围内的土层达到极限值;桩底沉渣直接影响桩顶沉降及极限承载力;随着长径比的加大,桩侧摩阻力发挥效率降低。
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| 关 键 词： | 桥梁 钻孔灌注桩 静载 桩侧摩阻力 桩端阻力 |
| 文章编号： | 1002-0268(2004)01-0062-05 |
| 修稿时间： | 2003年2月12日 |
Test Study on Side Friction of Large Diameter Bored Pile |
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| GU Pei-ying,WANG De-ping,LU Hui-ming.Test Study on Side Friction of Large Diameter Bored Pile[J].Journal of Highway and Transportation Research and Development,2004,21(1):62-66. |
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| Authors: | GU Pei-ying WANG De-ping LU Hui-ming |
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| Institution: | GU Pei-ying~1,WANG De-ping~2,LU Hui-ming~2 |
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| Abstract: | Based on the results of four large diameter bored piles under static load test in Suzhou, the magnitude of side friction of pile and its propositional magnitude are provided. It is shown that much of the soil around the pile can't be at ultimate state, with only 54.5% through 78.4% soil being at ultimate state. The bottom sediment affects tip displacement and ultimate bearing capacity. Furthermore, the efficiency of side friction decreases if the ratio of length to diameter increases. |
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| Keywords: | Bridge Bred pile Static load Side friction of pile Tip resistance of pile |
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