Abstract：Research purposes：After analyzing the shortcoming of the methods for calculating the bearing capacity of the crushed stone pile composite foundation, this paper points out the incompleteness of stress ratio of pile and soil introduced into the calculation formula for the bearing capacity and the effect of increase of the soil strength on the bearing capacity of composite foundation. Base on these, the discussion is on the calculation methods for the initial bearing capacity and dynamic bearing capacity during pre-loading of composite foundation to seek the dynamic calculation formula for the bearing capacity of composite foundation.
Research conclusions：This bearing capacity of granular material pile depends on the strength of soil between the piles and they are variable. So the bearing capacity of crushed stone pile composite foundation can be expressed as the function of soil's shear strength. The bearing capacity of crushed stone composite foundation is a dynamic variable, increasing with the increase of the soil strength between the piles. The calculation formula for the dynamic bearing capacity of composite foundation is presented for construction with it.
Ye Shulin, Han Jie, etc. Field Study of Oil Tank Foundation Stabilized by Stone Columns[J]. Chinese Journal of Geotechnical Engineering, 1992(6): 52-61.
Zhao Jieyong, Wei Yongxing. Research on the Construction Technology of Crushed Stone Pile for Soil Raiway foundation in Clustered Depression at Yanrongfeng[J]. Journal of Railway Engineering Society, 2009(9): 1-4.
Yuan Jiangya. Working Mechanism of Geocell Reinforced Mattress and Gravel Pile Composite Foundation[J]. Journal of Railway Engineering Society, 2009(3): 17-21.
2010, Vol. 27 
版权所有 © 2014 《铁道工程学报》编辑部