中南大学学报（自然科学版）2012，Vol.43Issue(6)：2288-2294,7.
夯实水泥土桩复合地基中桩-土-垫层共同作用机理
Bearing behavior of column-soil-cushion mutual action in composite foundation with rammed cement-soil column
摘要
Abstract
Based on the shear displacement method and the Mylonakis & Gazetas model for interaction between pile and soil, and the Winkler's layered foundation model was introduced, the calculation formulae of the flexibility coefficients for interaction between pile and pile, pile and soil, soil and soil were obtained. Considering the performance of cushion, a new analysis method on pile-soil-cushion mutual action under the embankment was suggested, and the correlated program was developed by Matlab software. Taking the composite foundation with the rammed soil-cement columns as an example, the model test of the composite foundation with the rammed soil-cement columns was performed under the embankment, the influences of the cushion modulus and thickness on the differential settlement between column and soil were discussed. The results show that under embankment load, column may play a better role, and the load sharing of soil surrounding columns and differentia settlement among columns and soils may be reduced to improve the working properties of composite foundation by setting the appropriate soft cushion.关键词
夯实水泥土桩/复合地基/剪切位移法/Mylonakis & Gazetas及温克尔地基模型Key words
rammed cement-soil column/composite foundation/shear displacement method/Mylonakis & Gazetas and Winkler foundation model分类
建筑与水利引用本文复制引用
何杰,张可能,刘杰,吴有平,李冰..夯实水泥土桩复合地基中桩-土-垫层共同作用机理[J].中南大学学报（自然科学版）,2012,43(6):2288-2294,7.基金项目
国家自然科学基金资助项目(51108176,51078140) （51108176,51078140）
湖南省博士生科研创新项目(CX2010B050) （CX2010B050）
