FORMULATION OF ELASTO-PLASTIC BEHAVIOR BEARING CAPACITY OF SUBGRADE WITH DIFFERENT LATERAL EARTH PRESSURE

摘要

At present calculation formulas of critical edge pressure p_(cr) of subgrade and load P_(1/4) while depth of elasto-plastic range in subgrade is equal to one-fourth of width of base are derived on the assumption that the field of geostatic stress equal to hydrostatic state stress, i.e. coefficient of lateral earth pressure k=1.0, obviously this in not real. New formulas on case of k≠1.0 are obtained and by calculating examples the formulas are proved to be reliable.