| 桩端土强度对桩侧阻力影响的研究 |
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| 引用本文： | 张忠苗,张乾青.桩端土强度对桩侧阻力影响的研究[J].岩土工程学报,2010(Z2). |
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| 作者姓名： | 张忠苗 张乾青 |
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| 作者单位： | 浙江大学软弱土与环境土工教育部重点实验室;浙江大学岩土工程研究所; |
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| 摘 要： | 桩端阻力和桩侧阻力不是相互独立的,桩端土强度的提高会提高桩身侧阻,尤其是桩端附近桩侧土的侧摩阻力。通过静载试验研究了桩端下沉渣厚度不同以及桩端持力层不同时的超长桩实测桩侧摩阻力,阐述了桩端强度提高对桩侧摩阻力的强化作用,发现提高桩端土的强度不仅可以减小桩端沉降,还可以使桩身总侧阻提高进而可以提高单桩的极限承载力;同时运用莫尔–库仑理论分析了桩端土强度对桩侧阻力影响的作用机制。
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| 关 键 词： | 静载试验 桩侧阻 沉渣 桩端土强度 强化效应 |
Influences of soil strength at pile end on friction of lateral surface of piles |
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| ZHANG Zhong-miao,ZHANG Qian-qing.Influences of soil strength at pile end on friction of lateral surface of piles[J].Chinese Journal of Geotechnical Engineering,2010(Z2). |
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| Authors: | ZHANG Zhong-miao ZHANG Qian-qing |
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| Affiliation: | ZHANG Zhong-miao1,2,ZHANG Qian-qing1,2 (1.MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering,Zhejiang University,Hangzhou 310058,China,2.Institute of Geotechnical Engineering,China) |
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| Abstract: | The friction of lateral surface of piles and the resistance at the end of piles are not independent,and the friction of lateral surface,especially the surface near the pile end will increase with the soil strength at the pile end.Based on static load tests on super-long piles under different thicknesses of residues and different soil strengths at the pile end,the strengthening effect of hard soil at the pile end on the friction of lateral surface of piles is found and the enhancement of soil strength reduce... |
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| Keywords: | static load test shaft resistance residue soil strength at pile end strengthening effect |
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