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Model testing study on composite foundation of cement-soil pile under cyclic loading
Author(s): 
Pages: 1017-1020
Year: Issue:  S2
Journal: Rock and Soil Mechanics

Keyword:  cyclic loadingmodel testcomposite foundationvertical additional pressurestress ratio of pile to soilpore water pressure;
Abstract: Model tests on composite foundation of cement-soil pile under cyclic loading were conducted.The vertical additional pressure,stress ratio of pile and soil,the pore water pressure,and the settlement of composite foundation of cement-soil pile,etc. were discussed.The test results show that (1) the saturated soft foundation improved with cement-soil piles occurred redistribution of stresses;(2) the effects of cyclic stress ratio,number of loading cycle and replacement ratio on the stress ratio of pile to soil of composite foundation were remarkable;(3) the saturated soft foundation improved with cement-soil piles decreased the pore water pressure value and the settlement of back work;(4) the vertical deformation of the top of piles and pile-surrounding soil is not coordinative.The permanent settlement of the pile top piles is less than that of pile-surrounding soil;and this tendency is more remarkable with increasing number of loading cycle.
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