Research on in situ tests between self-balanced method and anchor pile method in high-speed railway

Construction of high-speed rail requests accurate and convenient pile test method.To analyze the differences between the self-balanced method and the anchor pile method in applications,this paper researched the application of the self-balanced method in bridges of Harbin-Dalian railway,in compared with the anchor pile method.By comparing the Load sharing proportion,Force distribution pattern and shaft resistance-displacement curve,both tests accurately reflects the bearing capacity and deformation characteristics of the pile when the shaft resistance is the main capacity,especially in homogeneous soil.The self-balanced method in the verification of pile bearing capacity can be an alternative to the traditional methods,and its accuracy can meet the engineering requirements.