STUDY ON CALCULATION METHODS OF BEARING CAPACITY RELIABILITY OF REINFORCED CLAY FOUNDATION

In this paper,the limit state function of a reinforced clay foundation,which was used in reliability analysis was obtained. At same time,the modification of the uncertainty of Hassan formula was done: the average value from Hassan formula was equal to the average value of limit bearing capacity obtained in site test. The selfcorrelation of soil character parameter and commutative correlation between soil character parameters were considered in the calculation of capacity reliability of reinforced clay foundation,with which the reliability of the foundation was increased. It was considered that the uncertainties of material parameters,load factors and calculation models. Finally,it is pointed out that a further study on the calculation methed of this sort of foundation is needed.