Flange connecting structure for foundation base piles of overhead transmission line PHC pipe piles and bearing platform

The invention provides a precast PHC pipe pile. Constraint steel pipes with inner ribs are integrally preset at the outer periphery of the outer wall of the precast PHC pipe pile. The precast PHC pipepile further comprises anchoring flanges fixedly sleeving the constraint steel pipes with the inner ribs. The invention further provides a flange connecting structure for foundation base piles of overhead transmission line PHC pipe piles and a bearing platform; the precast PHC pipe piles extend into the foundation bearing platform; composite spiral stirrups are arranged at the externals of the extending parts; and the precast PHC pipe piles, the foundation bearing platform, the composite spiral stirrups and bearing platform longitudinal reinforcements are molded by casting in situ. Core concrete is canceled; the construction period is shortened; and the construction cost is reduced. 本发明提供种预制PHC管桩，其外壁外围体预设带内肋约束钢管，还包含锚固法兰套设固定于所述带内肋约束钢管，本发明还提供种架空输电线路PHC管桩基础基桩与承台法兰的连接结构预制PHC管桩伸入基础承台，其伸入的部分的外部设置复合螺旋箍筋；所述预制PHC管桩、基础承台、复