Analysis And Study On Seepage Of Soft Foudation Sluice

With the help of three dimensional finite element software ABAQUS and related mathematical theory, this paper analysis the seepage field of natural sluice foundation, precast pile composite sluice foundation and flling pile sluice foundation, at the same time, deeply analyzes the effect of three kinds of foundation on seepage field. Finally this paper studies the effect of rainfall infiltration to the coupled action of seepage field and stress field The main research contents in text as follows:(1) This paper introduces the concept of seepage, the basic principle of finite element numerical analysis in seepage field and the variational principle in stable seepage field, determines the initial conditions and boundary conditions and cites the large finite element software, then account for the feasibility that based on analiztion of seepge and deduces finite element calculation of seepage slope.(2) Based on Jiaotugang Sluice in Taixing City, this paper brakes the seepage’s model of the natural sluice foundation and precast pile composite sluice foundation, analysis the distribution of the seepage water head, stress, displacement and seepage slope, and then contrastive analysis seepage’s element in two kinds of sluice foundation.(3) Based on Dinglou Sluice in Xuzhou City, this paper brakes the seepage’s model of flling pile sluice foundation. Considering there are three kinds of permeability coefficient’s change mode in the disturbed area of filling pile, this paper studies the seepage of pile’s peripheral soil, compares the distribution of the seepage water head, stress, displacement and seepage slope, and then analysis seepage’s features within the scope of the whole sluice foundation and disturbed area.(4) Considering the influence of the upper structure, establishs the finite element model of sluice foundation under different load, and analysis the stress and displacement of feature points in natural sluice foundation and precast pile composite sluice foundation. In addition, this paper fit the influential date to find out corresponding change rule from these date. Compared to two kinds of change curve in seepage water head, stress, displacement and seepage slope, Finally Calculates the value of influence in stilling pool’s anti-seepage, then analysis the influence of the precast pile composite to seepage.(5) This paper use coupling model of matrix suction-saturation-permeability coefficient, brakes the three-dimensional finite element model of the coupling between seepage field and stress field, then analysis temporal relation in stress strain, the influence of saturation and the equivalent plastic strain that caused by transient seepage within72hours’s rainfall infiltration.