Based Upon Modification Of The Normal Stress Over The Three-dimensional Slope Stability Software Research And Engineering Application

Slope stability analysis is a classic research topic in geotechnical mechanics.It has far-reaching theoretical significance and extensive engineering application background in civil engineering,hydraulic engineering and traffic engineering.In the three-dimensional stability analysis,the theory of three-dimensional limit equilibrium method is relatively mature.The subject is based on the existing theoretical results,using MATLAB as the developed program,based on the GUI as the lap joint framework,combining the three-dimensional limit equilibrium method with the optimization theory.The most dangerous sliding surface of the three-dimensional slope is automatically and quickly searched,and three-dimensional slope stability limit equilibrium analysis system software is established.The development and promotion of the software enables the three-dimensional limit equilibrium theory to be widely used in engineering practice to better serve the society.The main results of the completion are summarized as follows:(1)Developed software for calculating three-dimensional slope stability based on normal stress of sliding surface.The software designs two kinds of calculation models for homogeneous sliding bodies,which are weak interlayer slip surface and no weak interlayer slip surface,and the sliding surface equation is calculated as ellipsoid or sphere.The software satisfies most 3D sliding surface stability calculations,and has fast calculation speed;convenient data reading and storage,high calculation accuracy;and built-in loop has completed calculation cycle judgment of sliding surface type,and can apply all ellipsoid type and spherical type slip surface.(2)Developed a three-dimensional slope safety factor calculation software based on slice smooth technology.The software is also based on the three-dimensional limit equilibrium theory of the normal stress distribution of the sliding surface.The smooth surface is processed by the smoothing technique,and the fitting accuracy in the actual engineering and the zero-direction in the x,y-axis direction are solved ingeniously.The software is fast and the calculation results are reliable.(3)Developed a three-dimensional sliding body anchoring force and safety factor calculation software.The software is based on the three-dimensional limit equilibrium theory of sliding surface normal stress distribution to design two kinds of calculation modes for the sliding body.The first is to input the known uniform anchoring force and anchoring angle,and find the safety factor Fs value under the anchoring force;It is to input the preset safety factor Fs value,and find the uniform anchoring force acting on the three-dimensional sliding surface.(4)Through the above-mentioned development software,the stability of a road section K103+580~K103+660 is analyzed,The section K102+230~K102+289 route section is used to calculate the anchoring force required to set the safety factor,and verify the series of research and development software engineering practicality.