Laminated slab

Abstract

A laminate comprises a reinforced concrete (1) and a reinforced concrete precast ribbed slab (2), wherein, the reinforced concrete ribbed precast slab (2) is arranged on the bottom of the laminate and comprises a long reinforced concrete bottom board (3) and a longitudinal long reinforced concrete rib (4), holes (5) transversely penetrate the long rib (4) or / and the bottom board (3), at least one transverse prestressed reinforcing steel bar (6) is arranged in the the long bottom board (3), one end or both ends of the transverse prestressed reinforcing steel bar (6) are exposed and anchored in the reinforced concrete (1), and the transverse prestressed reinforcing steel bar (6) penetrates the hole (5) of the longitudinal long rib (4) and, after concrete is poured, forms a cast-in-situ, precast load-bearing laminate with bidirectional structures. Consequently, the present invention is applicable to superposed floors, floors, walls, foundation slabs and bridges, which apply cast-in-situ reinforced concrete or prestressed reinforced concrete, and the present invention is particularly applied to superposed floors.

Description

(1) Technical field [0001] The invention relates to a laminated board. (2) Background technology [0002] At present, the reinforced concrete floor slabs used in China include cast-in-place floor slabs and prefabricated floor slabs. The cast-in-place floor slabs have good integrity, but they need to be molded on site, and then concrete is poured. The construction period is difficult, the loss of the formwork is large, and the cost is high. formwork, short construction period and low cost, but the prefabricated components are self-heavy, difficult to hoist, cracks are prone to occur at the splicing parts of the components, and the integrity is poor, such as the patent No. ZL0322765. A reinforced concrete prefabricated component. The prefabricated component is composed of slabs and ribs, and the ribs have holes for passing steel bars. The thickness of the slab is large, which greatly reduces the effective height of the steel bars placed in the cast-in-place concrete, which aff...

AI Technical Summary

Problems solved by technology

[0002] At present, the reinforced concrete floor slabs used in China include cast-in-place floor slabs and prefabricated floor slabs. The difficulty is high, the loss of the formwork is large, and the cost is high. The prefabricated floor does not require on-site formwork, the construction period is short, and the cost is low. However, the prefabricated components are heavy and difficult to hoist. Cracks are prone to occur at the splicing parts of the components, and the integrity is poor. For example, the patent number is ZL0322765. 2. The patent titled a reinforced concrete assembled floor slab discloses a reinforced concrete prefabricated component. The prefabricated component is composed of plates and ribs, and the ribs have holes for piercing steel bars. The effective height of the steel bars in the pouring concrete is greatly reduced, which affects the two-way force balance of the floor slab, and it is difficult to form an equivalent two-way slab, etc.

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