| 大直径超长桩压浆后承载性能的试验研究及有限元分析 |
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| 引用本文： | 黄生根,龚维明.大直径超长桩压浆后承载性能的试验研究及有限元分析[J].岩土力学,2007,28(2):297-301. |
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| 作者姓名： | 黄生根 龚维明 |
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| 作者单位： | 1. 中国地质大学(武汉),工程学院,武汉,430074
2. 东南大学,土木工程学院,南京,210096 |
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| 摘 要： | 结合大直径超长桩试桩得到的试验资料，应用有限元方法分析了压浆对大直径超长钻孔灌注桩承载性能的影响。根据反分析计算结果可知，桩周摩阻力、桩端加固体变形模量及桩周土的变形模量均有不同程度的提高，桩周土在整个桩长范围内变形模量提高幅度为33 %～67 %，平均侧阻力提高幅度为30 %～40 %，与实测结果相基本一致。
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| 关 键 词： | 大直径超长桩 后压浆 承载特性 摩阻力 有限元 |
| 文章编号： | 1000-7598-（2007）02-0297-05 |
| 收稿时间： | 2005-04-01 |
| 修稿时间： | 2005-04-01 |
Test study and finite element analysis of bearing behavior of large diameter overlength piles after grouting |
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| HUANG Sheng-gen,GONG Wei-ming.Test study and finite element analysis of bearing behavior of large diameter overlength piles after grouting[J].Rock and Soil Mechanics,2007,28(2):297-301. |
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| Authors: | HUANG Sheng-gen GONG Wei-ming |
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| Institution: | 1. Faculty of Engineering, China University of Geosciences (Wuhan), Wuhan 430074, China; 2. College of Civil Engineering, Southeast University, Nanjing 210096, China |
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| Abstract: | Effects of grouting on the bearing behavior of bored pile are analyzed with the finite element method in accordance with the test results of large diameter over length piles.According to the back-analysis results,shaft friction,modulus of deformation of consolidation body in the base and modulus of soils are improved in different degrees,modulus of deformation of soils along shafts were improved 33 %-67 %;the average friction resistances are improved 30 %-40 %;which are satisfactory relatively. |
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| Keywords: | large diameter overlength pile post-grouting bearing behavior frictional resistance finite elements |
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