Ardently beam construction construction method null of underground floor excavation

摘要

PURPOSE:To reduce construction costs by providing back-filling members between landslide protection walls and walings, driving core columns of columns in the ground, fitting and inserting a column and beam joining body provided with through-holes in the tops of the core columns, and connecting beams to the joining body to place concrete. CONSTITUTION:The uppermost parts of external walls 3 are constructed on the ground, and walings 9 are constructed along the insides of the external walls 3. After that, back-filling members 40 are laid between the external walls 3 and walings 9 at specific intervals. Then, cast-in-place concrete piles 4 are driven, and after the lower ends 62 of core columns 61 are inserted in the heads 41 of the piles 4, the column and beam joining body 10 is fitted and inserted from the tops 63 of the core columns 61. In addition, PC beams 71 are arranged between arm sections 13 of the column and beam joining body 10 and walings 9, and after the ends of them are connected with joining members 72 to form floor beams 7, concrete for a connection of the floor beams 7 and floor slabs 8 is placed.