The Evaluation Of Loess Collapsibility And The Study Of Relationship Between Stress And Distortion

In a long time, it is always the center of loess mechanics that the sensibility of loess to water, now the study which water is increased in practice is a chiefly job.From the point of view of the collapsible speed of loess, the problem of evaluating the collapsibility of loess should belong to the fuzzy category. So the evaluation of loess collapsibility was researched by the theory of fuzzy in the field of collapsible speed. In the macroscopical field: (1) The relationship between the moisture and the speed of average collapse was attained, that is , the speed of average collapse will increase with increasing of the moisture at first,but it will decrease when the value get to certain max with increasing of the moisture; (2) The model of relationship between the pressure and the speed of average collapse was established on the basis of experiment. The conclusion of that the speed of average collapse bouncing increase with increasing of the pressure was attained and the relationship between stress and distortion was established ; (3) The method of synthetical evaluation for collapsibility loess under the effect of time, pressure and moisture was offered. In the microcosmic field: (1) From the disciplinary of hole in loess diversification, that the disciplinary of effective hole in loess diversification is the microcosmic incarnating of the disciplinary of collapsible speed diversification was pointed; (2) The function between distributing density of effective hole and time was established by DLA.