Studies on bearing capacity of gravel-piled compound foundation detected by transient Rayleigh surface waves

The relation between deformation modulus and velocity of shear was discussed.The deformation modulus of gravel pile was also studied,then the regression model was obtained.Based on the modulus ratio model,a new method which used Rayleigh velocity to calculate the stress ratio of compound foundation was established.The influencing factor of the stress ratio was discussed too.By comparison with the dead-load test,the reliability of the new method was verified.