| 黏性土中静压沉桩过程桩端阻力试验研究 |
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| 引用本文： | 曹国星,刘雪颖,管金萍,王永洪.黏性土中静压沉桩过程桩端阻力试验研究[J].低温建筑技术,2019,41(6):57-60. |
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| 作者姓名： | 曹国星 刘雪颖 管金萍 王永洪 |
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| 作者单位： | 中国铁建航港局有限公司第三工程分公司,山东青岛,266071;青岛理工大学土木工程学院,山东青岛,266033;青岛理工大学土木工程学院,山东青岛266033;蓝色经济区工程建设与安全协同创新中心,山东青岛266033 |
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| 基金项目： | 国家自然科学基金;国家自然科学基金;山东省重点研发计划;山东省重点研发计划;青岛市博士后应用研究项目 |
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| 摘 要： | 为准确分离黏性土中静压沉桩阻力中桩端阻力和桩侧阻力,通过在模型桩桩端安装轮辐式压力传感器,对沉桩过程中桩端阻力进行了精确测量。试验结果表明:桩端阻力随沉桩深度的增加呈逐渐增长的趋势;沉桩过程中桩端破土产生桩端阻力,桩端阻力最终为2.054kN;黏性土中的静力压桩结束时,桩端阻力承担了62.3%的荷载。总桩侧摩阻力随沉桩深度的增加逐渐增大;随着沉桩深度的增加,桩周土的侧压力逐渐增大,从而使桩侧摩阻力增大。研究结果可为桩基础设计提供参考。
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| 关 键 词： | 静力压桩 室内试验 压桩力 桩端阻力 |
EXPERIMENTAL STUDY ON PILE END RESISTANCE DURING STATIC PRESSURE PILE SINKING IN COHESIVE SOIL |
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| CAO Guoxing,LIU Xueying,GUAN Jinping,WANG Yonghong.EXPERIMENTAL STUDY ON PILE END RESISTANCE DURING STATIC PRESSURE PILE SINKING IN COHESIVE SOIL[J].Low Temperature Architecture Technology,2019,41(6):57-60. |
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| Authors: | CAO Guoxing LIU Xueying GUAN Jinping WANG Yonghong |
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| Affiliation: | (The Third Engineering Branch of China Railway Construction Port Authority Co., Ltd., Shandong Qingdao 266071,China;School of Civil Engineering, Qingdao University of Technology, Shandong Qingdao 266033,China;Collaborative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone,Shandong Qingdao 266033,China) |
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| Abstract: | In order toseparate the pile end resistance and the pile side resistance accurately from the static pressure pile resistance in cohesive soil, the pile end resistance is measured by installing a spoke type pressure sensor at the end of the model pile. The test results show that the pile end resistance increases with the increase of thepile depth.The pile end resistance is generated at the pile end during the pile sinking process,at the end of which,the load of pile end resistance is finally 2.054 kNand the pile end resistance bears a load of 62.3%.The lateral friction of the pile increases with the increase of the pile depth during which the lateral pressure of the pile soil gradually increases, which increases the pile side friction. The research results can provide reference for pile foundation design. |
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| Keywords: | static pile indoor test pile driving force pile end resistance |
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