Study On Deformation Calculation Of Reinforced Retainiling Wall

Based on the typical section of the reinforced retaining wall choosen in the bank comprehensive improvement project in Yudong segment of Yangtze River,and by means of the software of finite element analysis FLAC3 D,it has been established the 2D and the 3D finite element analysis model respectively to analysis the deformation calculation of the reinforced retaining wall.It has studied the effect law of horizontal deformation of the reinforced retaining wall with multiple factors and analyzed the sensitivity of various factors by the gray correlation method.Depend on the achievement of finite element analysis,it was got the horizontal deformation formula of the retaining wall and verified the formula.Main research contents and conclusions are as follows:(1)Depend on the calculation results of the deformation consided the padding and height of the reinforced retaining wall,it was shown that the cohesive force and the internal friction angle of the reinforced padding have a great influence on the horizontal deformation of the wall,the cohesive force and the angle more bigger,the horizontal deformation more smoller.The cohesive force and internal friction angle of rear fulling has certain influence on the horizontal deformation.As the increase of the internal friction angle of rear fulling,the horizontal deformation of the wall will also reduce gradually,but the affect is not obvious.The height of the wall has important influence on the horizontal deformation.The deformation is linear increase with the increase of the height.(2)Calculated the influence on the layout and performance of reinforec bar with the deformation,it has got that the horizontal deformation of the wall has a linear relationship with the arrangement length of bar.Increased the bar length can effectively reduce the horizontal deformation,but when the length of the bar is excessive the effect is not obvious.The horizontal deformation decreases with the decrease of the bar arrangement spacing,when the spacing is too small the rate of reinforcement reaches saturation and the effect receded.The bar elasticity modulu has important effects on horizontal deformation of the retaining wall.When the value is small,apporopriate increase will make horizontal deformation decrease significantly.Once reach a certain value to increase agin,the decrease of horizontal deformation is not obvios yet.(3)Analyed the sensitivity of various influence factors by means of the grey relation method,it was shown that the vertical layout spacing of reinforec bar and the height of the retaining wall have the most significant effect on horizontal deformation,and then followed by the internal friction angle of the padding of the reinforced retaining wall,the bar elasticity modulu,the bar length,the cohesive force of the reinforced padding,the cohesive force and internal friction angle of rear fulling.(4)Based on the finite element analysis results,it was known that the realationship between all of the analysed influence factors and the reinforcement horizontal deformation is basically linear.In the end,it has been summarized respectly the calculating formula inclused the single influence parameters and multiple influence parameters with the horizontal deformation of the reinforced wall.