摘  要：基于ABAQUS有限元軟件，模擬分析了PHC管樁抱箍式機械連接軸拉承載性能。結果表明：抱箍式機械連接的零部件均可滿足PHC管樁樁身軸拉設計值要求；抱箍式機械連接軸拉力傳力路線不直接，位移變形相對大；零部件應力分布相對不均勻，六角高強螺釘與U型抱箍卡之間存在先后屈服的現象。建議將U型抱箍卡上的六角高強螺釘孔設置為橢圓孔，預留一定的滑動空間，避免螺釘發生材料屈服現象。

Abstract: Based on ABAQUS, the axial tension bearing capacity of hoop type mechanical connection of PHC pile is analyzed by finite element method. The results show that the mechanical parts of hoop type connection joint can meet the bearing requirements of PHC piles axial tension design value; the tension transmission route of hoop type mechanical connection shaft is not direct, and the displacement deformation is relatively large; the stress distribution of parts is relatively uneven, and there is the phenomenon of yielding successively between hexagon high strength screw and U-shaped hoop clamp. It is suggested that the hexagon high-strength screw hole on the U-type hoop should be set as an ellipse hole, and a certain sliding space should be reserved to avoid the material yield phenomenon of the screw.