Pile Foundation Of Sluice Seepage Stability Analysis Research

As a multi-functional buildings are common in hydraulic structure, the lock is no stranger to our water conservancy workers, sluice construction has a long history, there are many different kinds of structure, also has a small scale.Pile foundation is a kind of good foundation treatment method, maladjustment of formation ability, and with the low permeability of concrete material has lower, also can be used as seepage control structure,with an additional effect.Under the natural foundation sluice construction does not satisfy the structural stability condition, foundation treatment can use the advantages of strong stability to form pile foundation pile foundation lock.Like all water conservancy construction, the study of seepage was part along with the development of the water conservancy industry.Seepage are important factors which influence the stability of structure, seepage calculation is also damage prevention of the gate.In a large number of water conservancy scholars in sluice design and construction process, summarizes a series of seepage calculation and anti-seepage of the classic methods, solve a lot of seepage problem.But specific to the pile foundation sluices, due to differences in material properties of piles and soil, the pile in foundation of discontinuous, nor a single as impervious body.In providing the bearing capacity of foundation pile on seepage field and stress field at the same time the influence of still needs further research.Therefore, the author thinks that it is necessary to research on pile foundation of sluice seepage problem.The status, this paper introduces the development of seepage calculation for the sluice seepage calculation of the common methods and applicability of each method and the advantages and disadvantages listed one by one, the method shows the limits of seepage calculation of pile foundation.Focuses on the basic theory of seepage and seepage calculation of phase in the finite element method, is introduced in sluices Mohr- coulomb stress analysis of soil model and modeling by using Midas GTS software.Through the pile foundation seepage flow numerical simulation of the gate, got the following contents:Respectively using seepage finite element calculation method, to decorate with pile foundation brake bottom of sancha river gate, and the natural foundation under the same parameters sluice seepage analysis, and the gate under different water level change of water head distribution and seepage slope and flow results are compared, the results show that the pile foundation of the implant can reduce the water head distribution, reduce the larger head accounted for the proportion of the whole seepage field, and can reduce the level of the sluice seepage slope, in the stable seepage field, the volume of a pile occupy in the flow field, will reduce the seepage flow.On the whole structure is impervious effect of the gate.And then the author sancha river brake for coupled seepage and stress field analysis, in the completionperiod and the highest water level two kinds of working conditions of horizontal and vertical displacement results analysis, the completion period of pile foundation sluice maximum vertical displacement.Brake in under the action of gravity center of gravity tilt, the lock structure led by central focus toward the displacement of surrounding soils.At the highest level, displacement trend similar to the completion period, however, due to water pressure,high water lateral horizontal displacement is larger than completion period, but subject to uplift pressure effect, small vertical displacement is completed.At the same time, the characteristics of pile foundation of gate position- brake bottom soil layer and in contact with the pile side soil under separate displacement analysis, the results showed that the completion period and storage period, the displacement characteristics of the parts and the overall displacement coordination, rendering completed phase displacement, XuShiQi the characteristics of small displacement.Pile foundation is a very general way of foundation treatment, especially suitable for bad foundation, under the conditions allow, pile foundation lock can not only guarantee the stability of structure, it can instruct structure permeability.Can be widely used structure types.