# [1]易耀林,刘松玉.钉形搅拌桩复合地基荷载试验的三维数值模拟[J].东南大学学报(自然科学版),2008,38(5):821-827.[doi:10.3969/j.issn.1001-0505.2008.05.016] 　Yi Yaolin,Liu Songyu.3D numerical analysis on bearing tests of T-shaped cement-soil deep mixing column composite foundation[J].Journal of Southeast University (Natural Science Edition),2008,38(5):821-827.[doi:10.3969/j.issn.1001-0505.2008.05.016] 点击复制 钉形搅拌桩复合地基荷载试验的三维数值模拟() 分享到： var jiathis_config = { data_track_clickback: true };

38

2008年第5期

821-827

2008-09-20

## 文章信息/Info

Title:
3D numerical analysis on bearing tests of T-shaped cement-soil deep mixing column composite foundation

Author(s):
Institute of Geotechnical Engineering, Southeast University, Nanjing 210096, China

Keywords:

TU472.36
DOI:
10.3969/j.issn.1001-0505.2008.05.016

Abstract:
A new cement-soil deep mixing column named T-shaped cement-soil deep mixing column is simply introduced. Based on bearing tests in test site, 3D numerical simulation on bearing tests of T-shaped cement-soil deep mixing column composite foundation with different column constitutive models, model sizes, column quantity, column-soil interface treat methods were conducted, the reasonable method was then determined after analysis and comparison. Some conclusions are drawn. It’s not suitable to use elastic model for column in numerical simulation when column may become yielded; only setting a single loaded column can not reflect the column group working state; and there are little difference in simulation results,whether column-soil interface are treated with interface element, transition layer, or nothing for situation. The load transfer and settlement behavior from the simulation results are also analyzed: most of the column load concentrates on the enlarged column cap, and distributes quickly, there is more load attenuation at the variable section. The skin friction of enlarged column cap develops more adequately than underside column. The column settlement concentrates on enlarged column cap, and soil settlement concentrates on a little area below the variable section.

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