Analysis And Research On Deformation Factors Of Cement Mixed Pile And Composite Soil-Nailed Wall

Composite soil nailing supporting technique is developed on the basis of the traditional soil nailing technology, it is a new type deep foundation pit supporting technology. Because it can control the deformation of foundation dimtch effectively and improve the stability of earth slope greatly. Cement mixed pile and composite soil-nailed wall is a common type, with advantages such as short construction period,low cost,little influence on the environment.Although the scholars at home and abroad have done a lot of indoor and outdoor tests and numerical simulation. At present, the theory research of it is far behind from the engineering practice.and the deformation factors need to be studied in a deep going way further. According to an actual project,using FLAC3D software,this paper analyzes the deformation factors of this supporting structure.Several research aspects as follows:(1) The formation,development and research status of soil nailing technology and composite soil-nailed technology are introduced. The construction technology and the working mechanism of cement mixed pile and composite soil-nailed wall are analyzed brifely.(2) According an actual project, the deformation behavior of cement mixed pile composite soil nailing by field testing and simulated are analyzed by buildng three-dimensional model based on FLAC3D,and contrast with the common soil nailing wall.(3) The composite soil nailing is simulated by FLAC3D software. The horizontal deformation factors influencing cement mixed piles composite soil nailing wall are analyzed.The factors contains the soil nailing distance,the soil nailing length,the soil nailing inclination.the effort of mixed piles parameters and the effort of ground overload of the slope,and the following conclusions received will be helpful to improve the design and constructions of.cement mixed pile and composite soil-nailed wall.