Abstract:According to the inherent force mechanism of slope reinforcement,the calculation model of nonlinear FEM is constructed for the slope reinforcement. Taking the assumption that the stress condition of reinforced slope is equivalent to the stress condition of unexcavated slope at the given control points,a new calculation model of active slope reinforcement is put forward on the basis of method of stress control in the critical slip surface. This method provides a model for the selection of stress control point in the critical slip surface,and takes the equivalent stress as the weight discriminant of stress control at the control points. Thereafter,the functions of the stress control are established for the slope reinforcement. Moreover,an intelligent optimum model of slope stress control is constructed by virtue of the GA,taking the control function of stress as the objective function,and taking the magnitude and distribution of exterior reinforced loads as the restraint conditions. The design and calculation of active slope reinforcement based on the method of stress control in the critical slip surface can then be realized. Finally,by means of case study and model test,this method is proven to be feasible and rational. It is a new calculation method controlling the magnitude and distribution of exterior reinforced loads to compensate for the internal stress loss for the active-reinforced slope;and the calculation results can provide references for slope reinforcement and construction methods.