›› 2014, Vol. 28 ›› Issue (1): 68-71.

• 工程实录 • 上一篇    下一篇

渣土桩复合地基承载特性数值模拟分析

 孙青娟,刘增荣,李小龙   

  1. (西安建筑科技大学土木工程学院,西安 710055)
  • 收稿日期:2013-04-07 出版日期:2014-02-20 发布日期:2014-02-27
  • 作者简介:孙青娟(1988-),女,硕士研究生,研究方向为岩土工程。

Numerical Analysis of Composite Ground Formed by DDC Method

SUN Qingjuan, LIU Zengrong, LI Xiaolong   

  1. (College of Civil Engineering, Xi'an University of Architecture and Technology,Xi'an 710055)
  • Received:2013-04-07 Online:2014-02-20 Published:2014-02-27

摘要: 渣土桩复合地基属于半刚性半柔性桩复合地基,加固地基效果明显,利用ANSYS有限元软件对渣土桩单桩复合地基承载力进行了数值计算分析,结果表明,桩体、桩间土协调工作性较好;桩与桩间土的压缩模量对复合地基的承载特性影响较大;桩长对提高渣土桩复合地基的承载力效果不明显,应以实际工程地基处理目的为首要考虑因素。

关键词: 渣土桩, 复合地基, 承载特性, ANSYS有限元分析

Abstract: The composite ground of large diameter columns formed by Deep Dynamic Compaction (DDC) method is numerical analyzed by using commercial software ANSYS.  The analytical results indicate that a good compatibility between the DDC formed columns and surrounding soils is demonstrated. The DDC formed composite ground belongs to a composite soil of semirigid and semiflexible subgrades. The compression modulus of surrounding soils has a significant impact on the bearing capacity of the composite foundations. The length of the column has less influence on the bearing capacity of the treated foundations.

Key words: DDC formed columns, composite ground, bearing capacity, finite element analysis