Study On Settlement Prediction And Numerical Simulation Analysis Of High Fill Embankment

High embankment is the highway and railway construction line selection and other related requirements based on the slope and often a roadbed,especially common mountain roads and railway construction.In the high fill embankment,the most important technical points related to the safety of the high embankment and the operation quality of the late stage is to control the settlement of the whole high fill,ensure the stability of settlement and control the settlement rate,which is the guarantee for the stability of the whole high embankment.This paper consists of six chapters,the contents of the thesis include: summarizing the current situation of research background and significance of the research,the research contents of this paper are introduced;and the related ideas;introduces the theory,process,calculation and analysis prove the results and conclusion;calculation,data,charts and related analysis of important formulas;and summary research content.It also includes relevant references and the author's academic papers published during the master's degree and the results of relevant scientific research.Based on the settlement monitoring of two actual projects,the prediction,analysis and numerical simulation of the settlement of high fill embankment are carried out by means of curve prediction,grey system theory and numerical simulation.The main works and achievements are as follows:(1)Based on the references,the factors that affect the settlement and deformation of the high fill embankment are summarized,and the settlement control measures are also given.(2)The application of settlement curve prediction,based on the high embankment of Zha Nian highway embankment height of 34 meters in the filling period measured settlement data,respectively using the hyperbolic method,exponential curve method,logarithmic curve method for the settlement of high embankment in the short term and late filling period were predicted,and to calculate the related parameters and forecast forecast settlement of short-term,late results were compared and analyzed,the conclusion is obtained.Then,combined with the advantages and disadvantages of the three kinds of curves in the short-term,middle and later stages,this paper gives the prediction and optimization combination method of the high fill embankment during the filling process,and gives a prediction method for the settlement in the future period based on the length of different monitoring time.(3)The Inner Mongolia Hohhot to Shahukou highly original foundation of high fill embankment settlement in embankment soil under the gravity of the grey system theory modeling,modeling were comparative analysis of the choice of the length of the original sequence,and then according to the model of settlement was predicted through the comparative analysis found that the key to the analysis of grey the system modeling of the settlement is the distance of the original sequence of time.(4)Based on the finite element theory,numerical settlement of embankment in weight of soil under the action of the original foundation soil is modeled and analyzed by simulation software ABAQUS,were obtained with the filling height change settlement nephogram,stress and strain,and the images are analyzed based on the related theory.