Standard test method for in situ stress and modulus of deformation using the flatjack method
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Test method for determining the in situ modulus of deformation of rock mass using a radial jacking test
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Standard test method for determining the in situ modulus of deformation of rock mass using the rigid plate loading method
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Standard test method for determining the in situ modulus of deformation of rock mass using the flexible plate loading method
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This kind of structures will cause the principal stress difference bigger due to the sharp changes modulus of deformation between auxiliary core and main core , auxiliary core and upstream and downstream transition materials , which is disadvantage of stress transmission
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According to elasto - plasticity theory , with the help of finite - method program ansys , the paper undertakes the computer analogue tests about the bearing capacity of pile tip arranged by orthogonal principle , and attains the relations of pile - tip bearing capacity to embedment depth , pile diameter , cohesion , internal friction angle and modulus of deformation . by the means of mathematical statistic , regression equation of the ultimate bearing capacity calculated by finite element method is gained through the regression analysis of 81 group data from the computer analogue tests . by comparison and analysis of the values calculated by finite - element regression equation and the values of in situ loading test , the regression equation is gained which calculates the size effect for base resistance of large diameter pile
8.
The settlement is analyzed by using the settlement calculation theory already existed and the pile deformation modulus is researched under the different test conditions . it results in the different pile modulus of deformation that the pile side constraint is different because of the different testing conditions , so the settlement calculation for composite foundation of stone columns must use different computing modes based on the testing conditions
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