Numerical Simulation Studies On Soil Arching Effect On Anti-sliding Piles

With the rapid development of economy, the number of road construction projectis increasing in the mountainous regions, but there are many slopes in the constructionprojects need to reinforce. Anti-slide pile is a highly effective against sliding mode inslope reinforcement engineering, it has been widely used. The anti-sliding mechanismof anti-slide pile has been widely cognitive in engineering and academic circles, theanti-slide pile is through soil arching effect between piles. But the effect of the seismicload to anti-slide pile soil arching and influence of pile design parameters, such as theresearch is also less. And our country is a country that earthquakes are common, andeach time the earthquake will bring certain effect to existing projects, sometimes theyeven directly cause irreversible damage to the engineering project, and cause a chainreaction. So, this article is in this context, determine the research that numericalsimulation studies on soil arching effect on anti-sliding piles, contrast the tests andactual engineering, build a numerical model, change the landslide thrust, the pilespacing parameters, research the soil arching of anti-slide pile effect analysis in thestatic and dynamic two ways. The main work is as follows:(1) It will establish the FLAC3D numerical analysis model under the staticcondition, the arch effect between anti-slide piles and after piles is studied and analyzedin different landslide thrust, anti-slide pile spacing and anti-slide pile width, and gets thethe influence law of anti-slide pile soil arching effect with these parameters change, andmakes certain contrast with predecessors’ research results.(2) In the base of the static numerical model, take free games boundary conditionsand the appropriate damping way to establish dynamic three-dimensional model. Thedynamic load is the use of the the wenchuan earthquake acceleration time history datatable of china earthquake networks center records.(3) It has been established in the standard of three-dimensional model, thenrespectively set up the numerical models of different thrust, different pile spacing anddifferent width, take simulation analysis in different models. It makes a contrast withstatic analysis and takes a summary of soil arching effect influence in seismic load. Itresearchs soil arching effect influence with changing landslide thrust, pile spacing andanti-slide pile width, and contrast the static analysis results. The last, it makes asummary about soil arching effect influence of anti-slide pile under seismic load, and gives some suggestions about reasonable pile spacing, pile width and seismic design ofanti-slide pile.