长江科学院院报 ›› 2010, Vol. 27 ›› Issue (12): 64-67.

• 岩土工程 • 上一篇    下一篇

桩长对搅拌桩复合地基承载性能影响的数值分析

张伟丽 1,2,蔡 健 1,郭 嘉 2,林奕禧 3,黄良机 3   

  1. 1. 华南理工大学,广州 510641;2. 中国地质大学 岩土钻掘与防护教育部工程研究中心,武汉 430074;3.珠海市建设工程质量监督检测站, 广东 珠海 519015
  • 出版日期:2010-12-01 发布日期:2012-09-05

Numerical Analysis on Effect of Pile Length on Bearing Capacity ofCement-Soil Mixing Pile Composite Foundation

ZHANG Wei-li 1,2, CAI Jian 1, GUO Jia 2, LIN Yi-xi 3, HUANG Liang-ji 3   

  1. 1.South China University of Technology, Guangzhou 510641, China; 2. Engineering Research Centerof RockSoil Drilling & Excavation and Protection Ministry of Education, China University of Geosciences, Wuhan 430074, China; 3. Zhuhai Municipal Construction Engineering Quality Supervision& Test Station, Zhuhai 519015,China
  • Online:2010-12-01 Published:2012-09-05

摘要: 在现场试验的基础上,利用FLAC3D建立数值模拟模型,改变水泥土搅拌桩复合地基的桩长,分别计算4种桩长复合地基的承载力、沉降以及桩、土应力,分析桩端进入硬土层的长度变化对复合地基承载性能的影响。结果表明,水泥土桩进入硬土层的长度对复合地基的承载力和沉降影响不显著,桩端进入硬土层深度范围宜为1~5倍桩径。

关键词: 水泥土搅拌桩 ,  , 复合地基 ,  , FLAC3D ,  , 桩长

Abstract:  Numerical simulation model were established with FLAC3D to calculate the bearing capacity, the settlement of composite foundation with different lengths of pile and the stress of pile and soil. The lengths of pile entered in the hard soil which have influence on the bearing behavior of composite foundation have been analyzed. The results show that the length of cement-soil pile entered in the hard soil has no obvious influence on the bearing capacity and the settlement of composite foundation. The length of the pile entered in the hard soil should be taken from two to five times pile diameter.

Key words: cement-soil mixing pile   , composite foundation ,   FLAC3D ,   pile length

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