| 摘要 |
PROBLEM TO BE SOLVED: To prevent damage of an underground wall wherein PCa piles made of prestressed concrete are used, couple more strongly with a floor slab, and decrease man-hours of working in the site. SOLUTION: When floor slab is integrally formed with a side wall 1 which consists of a PCa pile underground wall installed to arrange a lot of hollow pipe shape precast piles 10 in the underground by cast-in-place concrete, a steel plate 16 for connecting the floor slab is provided on a height position for connecting the floor slab of a side surface of the precast pile 10, and plate shape anchors 20 which face vertically are integrally provided on both side parts of a back of the plate 16. The plate shape anchors are passed between PC steel materials for introducing prestress which is built in the precast pile 10 and between reinforcing bars when they are incorporated to bury in a wall thickness, thereby the plate 16 is integrally formed with the pile 10, and the floor slab reinforcing bars are integrally formed with the plate 16.
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