Disclosed is a reinforced-bar concrete hollow slab, which comprises a reinforced-bar concrete (1) and hollow shuttering members (2), the hollow shuttering member (2) are enclosed in the reinforced-bar concrete (1), the hollow shuttering members (2) are arranged alternatively, a cast-in-situ reinforced-bar concrete rib (3) is arranged between them, the hollow shuttering members (2) comprise an upper board (4), peripheral side panels (5), and a lower bottom (6), the upper board (4), the peripheral side panels (5), and the lower bottom (6) enclose a polyhedral hollow shuttering member (2), the lower bottom (6) projects from at least one of the peripheral side panels (5) to form a cantilever slab (7), the floor of the lower bottom (6) is aligned with the floor of the cast-in-situ reinforced-bar hollow slab, characterized in that, the hollow shuttering member (2) is provided with at least one vertical aperture (8) for cast-in-situ concrete casting which penetrates the surface of the upper board (4) of the hollow shuttering member (2), the other end is connected onto the lower bottom (6), a cast-in-situ concrete rod member (9) is formed in the aperture (8) of the cast-in-situ concrete. The invention can be applied to cast-in-situ reinforced-bar concrete hollow slabs, storied building covers, house roofings, walls, foundation bedplates and hollow bridges. |