The Design And Numerical Simulation Analysis Of Deep Pit Diaphragm Wall Supporting Structure

As a quick and easy, economical and reliable’s excavation techniques, diaphragmwall has been widely applied to the deep foundation pit support engineering. But assupporting structure，the diaphragm wall are generally not used alone, always choosethe combined form that diaphragm wall with supporting or diaphragm wall with anchorcable combined. The theoretical study of the mechanism and behavior of the anchorcable support structure of the diaphragm wall is still far behind in the engineeringpractice. This paper use FLAC^3Dfinite difference method to study the technology ofdiaphragm wall with anchor cable. The study includes the following components:（1） From the soil constitutive model of the diaphragm wall with anchor and theircontact with the soil surface model using the FLAC^3Dfinite difference software to buildthe diaphragm wall anchor cable. Then composited a two-dimensional finite elementmodel.（2） Used a deep excavation engineering in HanDan city as an example to analyzethe LIZHENG （6.0） design calculations and FLAC^3Dsimulation of the diaphragm wallwith anchor cable supporting structure. Work out the excavation of the displacementand force based on these two softwares. At the same time, compared the designcalculations with the numerical simulation data, find out the difference between thenumerical results and the current design calculation.（3） Studied the impact on the settlement and sway of the additional load.（4） Anchor cable diaphragm wall supporting mechanism was preliminarilydiscussed.FLAC^3D finite difference software simulation results revealed the changes in theexcavation process of the diaphragm wall anchor support system of stress anddisplacement field. Because of the underground continuous wall and anchor workingtogether, can control the deformation, and to improve the stability of the pit effectively.Practical engineering application shows, the diaphragm wall anchor retaining structurecan adapt to the complex geological environment and the deep foundation and slopeengineering pit that needs to control the deformation. The results of this article has a significance to the further studying of thediaphragm wall anchor retaining structure mechanism of action, and its application inpractical engineering.