Manual Digging Holes Bearing Plate Pile Of Vertical Bearing Capacity Test

This paper is based on the pile loading field test in Henan province. In the two piles (one is manual excavation pile with plates, the other is straight-wall pile), testing elements is set before depositing concrete to reflect stress in the testing piles, displacement sensors on the pile block to reflect settlement deforming. With the data gain from testing elements through theory and numerical analysis the paper studies 1) the distribution character of stress in the pile; 2) display character of frictional resistance on the pile side and resistance on the bottom; 3) the stress-strain characteristics of the soil near the pile and the load transfer mode of the manual excavation pile with plates ;4) law for fallout and deforming; 5) establish an empirical formula of vertical allowable load capacity of manual excavation pile with plates. In addition, paper studies stress and deformation of the soil by finite element software, emphasis on vertical stress and shear stress in the soil below the pile and the influence of the plates. At last, suggestions are given on the designing of vertical space between plates.