Slope Stability Analysis Method And Program Development Based On The Principle Of Minimum Potential Energy Under Earthquake Action

Earthquake triggered landslides and other disasters are very easy to cause a huge loss,so the stability analysis of slope under the action of earthquake is one of the important research content in the field of rock and soil research.In fact,the stress pattern and failure mode of the slope under the action of the earthquake motion are three dimensional,at the same time,earthquake action is a process of change with time.However,the stability analysis of slope under earthquake action is mainly based on two-dimensional pseudo static calculation method,and the analysis results may have quite different from the actual situation,the analysis method of the slope stability under earthquake also needs further development and improvement.In this paper,based on the National Natural Science Fund(NO.51304084)and Natural Science Foundation of Jiangxi province(NO.20151BAB206026),according to the slope surface of arbitrary shape,the analysis establishment and program development method of slope stability under earthquake is carried out based on the minimum potential energy.The main research contents include the following aspects:(1)For the two-dimensional soil slope under earthquake,the slope will be considered as a whole,the effect of earthquake on the slope into energy,and considering the earthquake effect on soil shear strength decreased,by constructing two-dimensional slope calculation model,push the total potential energy function for real-time landslide system.According to the principle of minimum potential energy,the display expression of real time safety factor of sliding body is obtained,and then introduces the reliability evaluation index,calculate the slope safety factor of slope reliability under the earthquake,established the analysis method of 2D slope stability under earthquake action based on the minimum potential energy.(2)Based on the two-dimensional analysis method,in view of the process of three-dimensional soil slope under the action of earthquake,considering the time and three-dimensional earthquake action,through the introduction of a time parameter,established the calculation model of real-time system potential function of three-dimensional slope under earthquake,put forward the three dimensional reliability of slope safety factor.A three dimensional stability analysis method of slope is established based on the minimum potential energy under earthquake action.(3)In order to facilitate the use of engineering and scientific research personnel,based on the above established stability analysis method,using Matlab programming software developed theanalysis software for analysis of slope stability based on the principle of minimum potential energy.(4)The slope stability analysis method under the effect of earthquake established based on the principle of minimum potential method is applied to the example and the actual slope engineering,verified the rationality of the method and engineering application value,and analyzes the impact of earthquake related factors on slope stability.