Theoretical And Experimental Analysis On Dynamic Stability Of Anchoring Rock Slope

The geological structure in southwest of China is active and High intensity earthquake occur frequently.There are many mountainous with complex geological conditions.Because of these reason,the development of anchorage technology is necessary.With the same time,anchor cable is appeared and applied.Compared with the traditional anchoring technique,the anchoring cable has good seismic performance.And the anchor cable can be coordinated with other kinds of supporting structures,showing a good seismic performance,and it has a good future in engineering applications.Although anchor cable anchorage technology is widely used in practical engineering,the stability analysis of anchor slope under the seismic action is still developed slowly.A set of systematic and perfect theoretical analysis methods is not emergingTaking the rock slope anchored by anchor cable as the research object,the paper studies the the dynamic response law and dynamic stability of the anchored rock slope under of anchoring system as well as the anti-seismic performance of anchor cable by means of vibration bench model test,theoretical analysis and calculation,numerical simulation.The main work of the paper are as follows:1)By collecting research results of experts,the failure mechanism of landslip,dynamic response law of slope and the method of slope dynamic stability are summarized.And the main research objectives,contents and methods are put forward2)A test model is made based on high and steep rock slope.Seismic loading is simulated by vibration bench model test system to study and analyze the dynamic response characteristics of the anchoring rock slope.3)By improving the quasi-static Sarma method,the time history of FOS under seismic effect could be calculated.The definition of comprehensive FOS is introduced.Taking a simple anchor slope as an example,the comprehensive FOS is calculated and compared with the results of pseudo-stability method.4)A high and steep anchoring rock slope was simulated and analyzed.It researched that acceleration amplification effect,the force response of anchor cable and the change of dynamic response of slope before and after anchorage to analyze the positive effects of anchor cable on the seismic reinforcement of the slopes and the stability of pre-processing slope under seismic effects.