| 摘要 |
PURPOSE: A hollow PHC(Pretensioned Spun High Strength Concrete) pile is provided to improve durability against pile driving and load bearing capacity corresponding to bending, axial force and shear force, and to reduce excavation costs when the inside destruction process is applied. CONSTITUTION: The hollow-type PHC pile(100) comprises a reinforcement steel material(10), a connection unit(20), and a fixation unit(30). The reinforcement steel material, a steel material elongated in a longitudinal direction, which arranged inside concrete in a predetermined distance to a circumferential direction has the inner end(11) exposed to the hollow(H) surface. The connection unit, a circular ring-shape metal material is combined with the reinforcement steel material to maintain the distance among the reinforcement steel materials. The fixation unit arranged outside the connection unit has a fixing hole for the inner steel material inserted from upward or downward. |
