FEM Analysis For Post-grouting To Soil Around Pile Sides And Post-grouting To Soil Around Pile Sides And Bottom

The bearing capacity of the bore cast-in-place pile is reduced greatly because ofthe influence caused byslime in the bottom of the pile and mud surrounding the pile.In order to improve, enhance the bearing capacity of the bore cast-in-place pile,post-grouting bored pile arises at the historic moment. As a result,the cost of theproject can be reduced,the construction progress speeded up, the stability andreliability of the quality of pile foundation improved. At present, the research aboutthepost-groutingboredpileisstillimperfect,thetheoryfallsbehindthepractice.The paper analysis mechanism of the post-grouting bored pile and the effects,such as permeability,compaction and splitting of post-grouting to soil around pilesides and bottom based on studying the action of grouting fluid on pile and soil andthroughinvestigatingthefactorsaffectingbearingcapacityofthepilefoundation.Thepaper using the principle of in terms of working mechanism in poor permeablestratum, compaction appears to be main action while in permeable stratum, seepageseems predominant, establish post-grouting to soil around pile sides model with thefinite element software ,contrast with the not post-grouting pile, obtain the enhanceddegree of thebearingcapacityof thebore cast-in-placepile. In ordertoresearch quitefull, we use the finite element software to establish post-grouting to soil around pilebottom model and post-groutingto soil around pile sides and bottom model, calculatethe bearing capacity of post-grouting pile, obtain the enhanced degree of the bearingcapacityoftheborecast-in-placepile.Finally, based on a project example post-grouting to soil around pile sides andbottom, with the help of finite element software, we simulate the project and obtainthe enhanced degree of the bearing capacity of the bore cast-in-place pile. Contrastwith the bearing capacity obtained by the static load experiment, bearing capacityincrease1.01%,themethodhasacertainguidingsensetotheproject.