Abstract
Through the analysis of the sliding failure form of soil mass under the bearing push-extend reamed of Push-extend Multi-under-reamed Pile, in the paper, the law of coulomb-Mohr is used to establish a stress function and the theory of the sliding line is used to establish Prandtl regional stress field, which determines the stress calculating mode of soil mass and provides a theoretical basis for a further study of this type of pile ultimate bearing capacity of soil mass.
Highlights
The failure performance of the foundation is the slide of soil mass, when the soil mass is sliding, we can usually find the through sliding surface
Because it is the friction of the same kind of material between different parts, in order to distinguish it from the friction between different materials, it is known as the internal friction, the corresponding coefficient called internal friction coefficient
According to the analysis of theory and the experimental research on the failure mechanism of pile soil of the Push-extend Multi-under-reamed Pile, the results show that the destruction of the soil mass under the plate complies with the law above and belongs to the sliding failure, and that the ultimate bearing capacity of the soil mass can be solved by the theory of slip line
Summary
The failure performance of the foundation is the slide of soil mass, when the soil mass is sliding, we can usually find the through sliding surface (or called slip line). The shear strength of soil mass is in conformity with the law of friction. Because it is the friction of the same kind of material between different parts, in order to distinguish it from the friction between different materials, it is known as the internal friction, the corresponding coefficient called internal friction coefficient. (2014) Determine the Stress Calculating Mode of Sliding Failure of Soil Mass under the Push-Extend Multi-under-Reamed Pile.
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