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INFLUENCE OF PILE BOTTOM SLIME ON SKIN FRICTION AND BEARING CAPACITY ESTIMATION TO PILE
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摘要: 利用灌注桩应力测试结果，对桩底沉渣对桩的荷载传递影响进行分析。试验结果表明，桩底沉渣不仅影响桩端阻力发挥，而且也影响桩侧阻力发挥，桩底沉渣越厚，桩侧阻力发挥值越小。同时根据桩的荷载传递特征，提出桩的承载力估算方法。Abstract: According to cast-in-situ pile stress test results,it is analyzed the influence of pile bottom slime on the pile load transfer.Test results indicate that pile bottom slime has influence upon not only tip of pile resistance,but the skin friction.The pile bottom slime is thicker,the skin friction is smaller.Simultaneously according to the characteristics of load transfer of piles,the estimation method is proposed about the bearing capacity of pile.
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Key words:
- pile bottom slime /
- construction technology /
- skin friction /
- load transfer /
- bearing capacity
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周红波,陈竹昌,姚浩.上海钻孔桩桩侧摩阻力的异化效应及分析[J].岩土工程学报,2007,29(2):174-179; [2] JGJ 94-2008建筑桩基技术设计规范[S]; [3] 刘利民,陈竹昌.桩侧阻力增强效应及其工程意义[J].铁道建筑技术,2001(1):7-10; [4] 席宁中.试论桩端土强度对桩侧阻力的影响[J].建筑科学,2000,16(6):51-60; [5] 刘利明,舒翔,熊巨华.桩基工程的理论进展与工程实践[G].北京:中国建材工业出版社,2002; [6] 张世民,俞峰.砂性土层中静压桩的荷载传递和承载力研究[J].工业建筑,2007,37(5):61-64. -
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