| 基于波速孔压静力触探试验计算软土中静压桩的 单桩极限承载力 |
| |
| 引用本文： | 曹权,施建勇,雷国辉,艾英钵.基于波速孔压静力触探试验计算软土中静压桩的 单桩极限承载力[J].岩土工程学报,2012,34(1):51-57. |
| |
| 作者姓名： | 曹权 施建勇 雷国辉 艾英钵 |
| |
| 作者单位： | 1. 河海大学岩土工程科学研究所，江苏 南京 210098 ； 2. 岩土力学与堤坝工程教育部 重点实验室，江苏 南京 210098 ； 3. 深圳市市政设计研究院有限公司，广东 深圳 518029 |
| |
| 基金项目： | 国家自然科学基金项目(50878075) |
| |
| 摘 要： | 根据静力触探探头和静压桩贯入软土时的特点，采用柱孔扩张理论来模拟圆锥锥身和桩身贯入过程中应力场的变化，采用球孔扩张理论分析锥尖和桩端的挤土受力情况，推导出该条件下柱孔扩张和球孔扩张的极限扩孔压力理论解，在此基础上，对静力触探探头和静压桩进行受力对比分析，推导出利用波速孔压静力触探试验成果估算静压桩极限承载力的理论表达式。理论计算值与现场试验桩的静载荷试验结果较为吻合，说明该理论解具有一定的实用价值。
|
| 关 键 词： | 波速孔压静力触探试验 静压桩 饱和软黏土 小孔扩张理论 单桩极限承载力 |
| 收稿时间： | 2010-12-08 |
Calculation of ultimate bearing capacity of jacked-in piles in soft soil based on seismic piezocone penetration tests |
| |
| CAO Quan,SHI Jian-yong,LEI Guo-hui,AI Ying-bo.Calculation of ultimate bearing capacity of jacked-in piles in soft soil based on seismic piezocone penetration tests[J].Chinese Journal of Geotechnical Engineering,2012,34(1):51-57. |
| |
| Authors: | CAO Quan SHI Jian-yong LEI Guo-hui AI Ying-bo |
| |
| Affiliation: | 1. Geotechnical Engineering Institute, Hohai University, Nanjing 210098, China; 2. Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Hohai University, Nanjing 210098, China; 3. Shenzhen Municipal Design and Research Institute Co., Ltd., Shenzhen 518029, China ) |
| |
| Abstract: | According to the characteristics of installation of seismic piezocone penetration test(SCPTu) penetrometers and jacked-in piles,the penetration process is simulated by means of the cavity expansion theory.Based on this evaluation,the analytical solutions of the limit pressure of spherical and cylindrical cavities are presented.According to the analytical solutions and comparison of forces between SCPTu penetrometers and the piles,an analytical relationship between the data measured from SCPTu and the ultimate bearing capacity of a single pile is established.Compared with the axial load tests on a single pile in the field,the value of the new analytical solution which is used to predict the ultimate bearing capacity of jacked-in piles by utilizing the SCPTu data is verified. |
| |
| Keywords: | seismic piezocone penetration test jacked-in pile saturated soft clay cavity expansion theory ultimate bearing capacity of a single pile |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《岩土工程学报》浏览原始摘要信息 |
|
点击此处可从《岩土工程学报》下载全文 |
