| 摘要 |
PROBLEM TO BE SOLVED: To improve the reliability of quality and the like by forming through holes in the upper end of a steel pipe pile, arranging footing beam main reinforcements through the through holes, and joining the steel pipe pile while burying its upper end in a footing beam. SOLUTION: A plurality of through holes 12 are formed in the pile head of a steel pipe pile 11, and footing beam main reinforcements 13 are extended into the steel pipe pile 11 from the through holes 12. The lower ends of column main reinforcements are disposed inside the steel pipe pile 11 from a steel pipe pile upper end 11a, and the pile head of the steel pipe pile 11, the footing beam main reinforcements 13 and the column main reinforcements are integrated through concrete to form a pile head joining structure 10. The footing beam main reinforcements 13 in the steel pipe pile 11 are thus restrained to a steel pipe through concrete, and shearing force acting thereon is not transmitted directly to the footing beam main reinforcements 13 in the steel pipe pile 11 but transmitted directly to a footing beam and a column from the pile head of the steel pipe pile 11, so that shearing reinforcing bars can be omitted. The structural performance of the pile head joining structure 10 is therefore uninfluenced by the quality of welding.
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