Method Of Geocell Reinforced Embankment And Analysis Of Finite Element

Geocell is a three-dimensional mesh grid wicth is made of geogrids,geomembrane or geotextiles,stripe polymercomposed of honeycomb.In indoor fill soil,gravel or sand,etc have certain stiffness and confining effect of the reinforcement layer,is widely used in highway,railway and water conservancy engineering.And for this kind of material,at present in the large room influence parameters,such as large room layers,different study is less,such as height,modulus of the innovation point of this essay is to large room variable cross-section parameters was studied,the reasonable application of these parameters can improve the economic benefit of material used.Therefore,the use of large room to the analysis of the reinforced embankment has important significance and practical value are discussed.Paper main content basically has the following several aspects:Reinforced embankment in a large room in the model analysis,with actual project as an example,three-dimensional finite element model of nonlinear analysis,the D-P material nonlinear elastoplastic model to simulate the soil,using the classical Coulomb friction model between soil reinforcement as reinforcement soil interface tangential force the constitutive model of contact element,the first through the embankment reinforced with reinforced the contrast of two kinds of circumstances,after laying large room on the characteristics of deformation of the embankment,the influence of the rule and the stress distribution.The results show that the reinforcement can effectively limit the lateral displacement of the embankment,reduce the uneven settlement,and make the embankment more uniform and improve the stability of the embankment;By changing the large chamber layers,modulus,different heights,and the reinforced layer spacing,to pass the exam room variable cross-section respectively studied the change of different factors on the effect of the embankment reinforcement;In order to further study the effect of the effect of the geotechnical chamber,on the original model in pile,pile through large chamber reinforced embankment reinforced embankment with large room contrast analysis,it is concluded that the two models on the bearing performance is different,the results show that the pile cap large chamber reinforced embankment under the horizontal and the vertical displacement of two-way suppress better able to reduce the embankment settlement.In addition,the model with different pile stiffness,the change of different lattice room height to the change of stress field and displacement field of embankment is analyzed,and the pile diameter,large room variable cross-section and a combination of both on the displacement change are analyzed,which provide certain reference for practical engineering design and construction.This article innovation point is for the processing of soft soil foundation wit h variable cross-section large chamber is analyzed the influence of foundation set tlement,settlement to meet the same case,variable cross-section grid chamber ha s a certain economic benefits.