Research & Use Of Bored Post-mud-jack Technology In The Yajiang Bridge

"The foundation is the key to success in the bridge", The foundation on the security and stability have attracted universal attention. Currently, in order to ensure the foundation security, the foundation in the complex geological conditions as mud-gravel layer folders or karst geology, research and development areas to explore in the cave pile foundation construction technical experience and good technical treatment measures is very important. The case of domestic construction, the construction of bored piles in bridge construction technology has been popular.However, because of the pile construction process itself defects, the piles of quality is difficult to guarantee, in order to overcome the factors that lead to defects in the construction, pile post grouting technology came into being. Through the use of bridge pile of post grouting technology research and the corresponding tests show that the application of the technology so that the bearing capacity of piles have been better to play, saving the cost of foundation treatment, significant economic and technological benefits. Thus, a variety of post grouting technology has been widely used in the country,.This article from the Friction Pile and end-bearing pile of friction construction technology and features to the Pile Foundation Design of the Yajiang simultaneously using the same pile with piles and piles of friction changes the program to discuss the construction process of post grouting technology and a numerical summary Simulation and theoretical analysis is verified grouting technology to improve pile bearing capacity. At the same time the mechanism and its construction technique and how to better apply to engineering practice are discussed.Through YaJiang Bridge the pile of post grouting technology to further understanding of its mechanism of action, using the finite element method analysis of post-grouting pile bearing capacity of bored piles, analysis of the pile diameter, pile length and other factors rule , Summed up the pile construction process of post grouting technology and key technology for the application of the technology to provide a reference.