Research on Testing Concrete Rammed Pile in Collapsible Loess Area
In order to verify the application effect of concrete rammed pile in collapsible loess area,this paper takes a construction project in Gansu province as an example to analyze the collapsibility,pile integrity and bearing characteristics of concrete rammed pile in collapsible loess area through field tests.The results show that the coefficient of variation of the density and collapsibility coefficient of concrete rammed pile are 0.005 5 and 0.094 respectively,and the coefficient of variation is small,that is,the test data are accurate.The average value of collapsibility coefficient is 0.007 5,which is lower than the standard value,that is,the collapsibility is well eliminated.The concrete rammed and expanded pile body is relatively complete,and all of them are excellent piles.With the increase of load,the displacement of pile top increases first line-arly and then rapidly,and the bearing capacity is good,and the ultimate bearing capacity meets the standard,which indicates that the con-struction effect of concrete rammed pile in collapsible loess area is good.
Collapsible loessConcreteRammed and expanded pileOn-site inspectionBearing characteristic
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