| In recent decades, as the fundamental construction, we met more Geotechnical slope stability problems. To meet the needs of the project, large slope were built because of different geological condition. China is located in intersection region of two enormous eismotectonic systems, frequency high strength sismic activity nearly exist in every province, which seriously threat to people’s life and property security in nothwest, outhwest and in north China especially. Consequently, there is great significance to study stability and to exploration unstability mechanism of slope on earthquake.Typical slope model was built by using FLAC3D software to analyse four questions:the influence of earthquake effect on rock, The location of the instability slope slide and it’s mechanization, slope slide will show instability under earthquake or not, and it’s deformation after instability.The main study as bellow:①Typical slope model was built by using FLAC3D software for static calculation to obtain stress nephogram under dead load of slope model, wich is basic Premise of reliable dynamic analysis, natural frequency of vibration provided scientific basis for damping parameter of dynamic analysis②The processing of seismic wave, wave filter and baseline correction were done, viscous boundary layerwere and Free field boundary were coalesced into models, and it’s availability were proved.③From the laws of slope model under the action of earthquake of dynamic response, to analyse variation tendency of acceleration and velocity of earthquake slope face, The time-history analysis of typical station of slope-top, middle and toe were made to abtain regular conclusion. At last, influention of Slope body form changing on ADMF was analysed to reveal seismic slope response pattern④From the most original definition of security coefficient, derives formulas about security coefficient to estimate soil slope under earthquake.It studied failure mechanism and plane of fracture of soil slope under earthquake. |
PDF Full Text Request