| 桩基承载力自平衡测试技术及应用研究 |
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| 引用本文： | 钱宝源,叶俊能,陈忠.桩基承载力自平衡测试技术及应用研究[J].宁波大学学报(理工版),2011,24(2):98-102. |
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| 作者姓名： | 钱宝源 叶俊能 陈忠 |
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| 作者单位： | 1. 宁波大学地基处理中心,浙江宁波,315211
2. 宁波市轨道交通工程建设指挥部,浙江宁波,315012 |
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| 摘 要： | 结合工程实例,介绍了桩承载力自平衡试验的原理和方法.探讨了大直径、超长钻孔灌注桩的竖向承载性状,分析了桩端压浆对于提高桩基承载力的作用,研究了桩侧阻力和桩端阻力的发展规律及注浆前后的变化.测试结果表明：桩端压浆对提高桩基承载力,改善桩基沉降效果显著;桩端承载力提高3264kN,桩侧摩阻力提高较多,为6290kN;同时也表明自平衡技术可广泛应用于桩基承载力测试.
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| 关 键 词： | 自平衡试桩法 承载力 压浆 |
Application of Self-balanced Method in Bearing Capacity Testing of Pile |
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| QIAN Bao-yuan,YE Jun-neng,CHEN Zhong.Application of Self-balanced Method in Bearing Capacity Testing of Pile[J].Journal of Ningbo University(Natural Science and Engineering Edition),2011,24(2):98-102. |
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| Authors: | QIAN Bao-yuan YE Jun-neng CHEN Zhong |
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| Institution: | QIAN Bao-yuan1,YE Jun-neng2,CHEN Zhong1(1.Soil Improvement Center,Ningbo University,Ningbo 315211,China,2.Ningbo Urban Rail Transit Project Construction Headquarter,Ningbo 315012,China) |
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| Abstract: | In this paper,the self-balance test principle and method are introduced in combination with a case-study.The vertical bearing behavior of large diameter and super-longhole bored pile are analyzed,and the effect of grouting on improving the bearing capacities of piles is discussed.The development of the pile side resistance and pile tip resistance at the pre and post of grouting are investigated.The results show that the grouting can improve the bearing capacities of piles and decrease the settlement obvious... |
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| Keywords: | self-balanced testing method grouting bearing capacity |
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