| 灌注桩侧摩阻力发挥模式的研究 |
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| 引用本文： | 叶建忠,周健,韩冰.灌注桩侧摩阻力发挥模式的研究[J].岩土力学,2006,27(11):2029-2032. |
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| 作者姓名： | 叶建忠 周健 韩冰 |
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| 作者单位： | 1. 同济大学 地下建筑与工程系，上海 200092；2. 浙江省交通规划设计研究院，浙江 杭州 310006； 3. 浙江省人民政府防汛防旱指挥部，浙江 杭州 310009；4. 浙江大学 建筑工程学院，浙江 杭州 310027 |
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| 摘 要： | 桩侧摩阻力的发挥主要与桩周土的力学性质、侧向有效压力、桩土的相对位移量、桩土的接触性质、时间效应等有关。采用双曲线侧摩阻力发挥模型，通过分析上海某地区灌注桩的现场试验实测资料，提出了双曲线模型的计算参数取值范围。此外，对桩侧摩阻力的时间效应也作了初步探讨。结果表明：采用双曲线函数对灌注桩侧摩阻力与相对位移间的变化关系进行拟合是合理的；由于各级荷载下桩体沉降同样具有时间性，桩侧摩阻力同时具有明显的时间效应
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| 关 键 词： | 钻孔灌注桩 侧摩阻力 双曲线函数 时间效应 |
| 文章编号： | 1000-7598-（2006）11-2029-04 |
| 收稿时间： | 2005-01-24 |
| 修稿时间： | 2005-06-07 |
Research on mechanism of skin friction of cast-in-place piles |
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| YE Jian-zhong,ZHOU Jian,HAN Bing.Research on mechanism of skin friction of cast-in-place piles[J].Rock and Soil Mechanics,2006,27(11):2029-2032. |
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| Authors: | YE Jian-zhong ZHOU Jian HAN Bing |
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| Institution: | 1.Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; 2.Zhejiang Provincial Plan Design&Research Institute of Communications, Hangzhou 310006, China; 3. Agency of Flood and Drought Prevention, Government of Zhejiang Province, Hangzhou 310009, China; 4. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310027, China |
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| Abstract: | Skin friction of pile mainly depends on mechanical characteristics of surrounding soils,relative displacement on interface,lateral effective pressure,behavior of pile-soil interface,time effect,etc..Based on the analysis of hyperbolic model of skin friction,the in-situ static test results of cast-in-place piles conducted in some places of Shanghai,are analyzed.Ranges of computational parameters related to hyperbolic model of skin friction are given.In addition,time-effect of skin friction of piles is also discussed briefly.Results show that it's rational to illustrate the relationship between skin friction and relative displacement by hyperbolic function.In addition,due to time effect of pile displacement,lateral skin friction of pile indicates evident time-dependence. |
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| Keywords: | cast-in-place pile skin friction hyperbolic function time effect |
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