Sandwich panel

Abstract

Disclosed is a superposed board which comprises a reinforced-bar concrete (1) and a reinforced-bar concrete prefabricated panel (2) with ribs arranged on the bottom position of the superimposed board, the reinforced bar concrete prefabricated panel (2) with ribs comprise a reinforced bar concrete bar-shaped bottom board (3) and longitudinal reinforced bar concrete long ribs (4). The invention can be applied to cast-in-situ reinforced concrete or prestressed reinforcement concrete's storied-building roofings, house roofings, walls, foundation bedplates and bridges, especially for superposed slabs.

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 plates and ribs, and the ribs have holes for passing steel bars. The thickness of the plates is large, so that the effective height of the steel bars placed in the cast-in-place concrete is greatly reduced. ...

AI Technical Summary

Problems solved by technology

[0002] At present, the reinforced concrete floor slabs used in China include cast-in-place slabs and prefabricated slabs. The cast-in-place 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 in 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 plates and ribs, and the ribs have holes for passing steel bars. The thickness of the plates is large, so that the effective height of the steel bars placed in the cast-in-place concrete is greatly reduced. Due to the large gap between the transverse steel bars in the cast-in-place concrete and the longitudinal steel bars in the bottom slab, the floor slab cannot form a two-way equivalent force-transmitting structural slab, and the spliced ​​parts of adjacent slabs are prone to cracking, which affects the stability of the floor slab

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