Pore Water Pressure Of Slope Change Rule Research Under Dynamic Load

Has outlined the domestic and foreign side slope static and the dynamic stability analysis method and the research present situation,And has analyzed the stability of slope influence factor,Ground water is an important attribute to the stability of slope influence,Specially pore water pressure unceasingly changes influence the side slope under the dynamic function the stability,Has used the side slope power finite element analysis method in view of this question,Has conducted the research of pore water pressure change in the slope and high earth fill embankment stability.Carries on the stability analysis in view of the high earth fill slope of embankment,According to depth of fill 18 meter,30 meter,40 meter,50 meters,each kind of embankment uses the different inclination and the surface width,inputs El centro earthquake wave,the artificial wave 1 and the artificial wave 2,inputs the different earthquake intensity,has carried on the static and the dynamical stability analysis to it,obtains under each operating mode pore water pressure change distribution map,under earthquake load function pore water pressure time interval curve,Analyzes various operating modes according to pore water pressure time interval curve to obtain the pore water pressure distributed rule.In whether there is in ground water influence situation,safety coefficient change rule,has provided the reliable basis for the mountainous area high earth fill slope of embankment earthquake resistance stability analysis design.According to the theory of vehicles dynamic load and the soil principle of dynamics,and earthquake engineering theory,Calculates the acceleration-time curve of the vehicles dynamic load function,Put the acceleration-time curve into Computation software,Obtains the mechanical analysis result under vehicles dynamic load function of the high slope.It is proved that safety coefficient compared to is considered the vehicles dynamic load reduces obviously.Under the dynamic vehicles load function,the pore water pressure in the slope has raised.This is big to the side slope stability influence,Therefore the vehicles dynamic load to affect us to the high slope of embankment stability is an important attribute which should consider in the design,the high slope of embankment design must consider this spot.