Overlaid assembly-type concrete dense-rib floor structure system and construction method for same

Abstract

The invention provides an overlaid assembly-type concrete dense-rib floor structure system and a construction method for the same. The system comprises a baseplate and a top plate, wherein the baseplate is composed of multiple prefabricated baseplates which have the same division width and are connected by overlaying steel bars; the top plate is a cast-in-situ top plate with a rib beam; the base plate and the top plate are overlaid and assembled; and a force bearing steel bar which is in overlapped connection with an overlaid beam steel bar is stretched out from an end head of the rib beam. The construction method comprises the steps that the prefabricated baseplate is prepared at a plant; hoisting is conducted on site; rib beam stirrups and rib beam reinforcing bars are disposed, and a hollow box or light material body is disposed; structural steel bars of the top plate are disposed; the rib beam reinforcing bars stretch out from the lateral sides and are in overlapped connection with the overlaid beam; and concrete pouring, maintenance and shaping are carried out. According to the invention, erection and dismounting of templates and supporting tools are omitted; work loads are reduced; construction cost is reduced; construction efficiency is increased; force bearing is more rational; and quality is better.

Description

technical field [0001] The invention belongs to the technical field of construction engineering, and in particular relates to a superimposed and assembled concrete ribbed floor structure system and a construction method thereof. Background technique [0002] The fully cast-in-place concrete hollow floor has the advantages of saving building materials, reducing self-weight, good integrity, and high structural strength. However, the fully cast-in-place concrete hollow floor requires a large number of supporting and folding formwork and supporting tool-type support systems. The amount of work is large and the operation is complicated. Generally, specialized wooden formwork workers are required. There are many formwork, high cost, long construction period, and water After concrete, removing the formwork is time-consuming and labor-intensive. At the same time, the thickness of the lower flange of the fully cast-in-place concrete hollow floor is relatively thin. When pouring conc...

AI Technical Summary

Problems solved by technology

However, the fully cast-in-place concrete hollow floor requires a large number of supporting and folding formwork and supporting tool-type support systems. The amount of work is large and the operation is complicated. Generally, specialized wooden formwork workers are required. There are many formwork, high cost, long construction period, and water After concrete, it is time-consuming and labor-intensive to remove the formwork

At the same time, the thickness of the lower flange of the fully cast-in-place concrete hollow floor is relatively thin. When pouring concrete, the lower flange is prone to air bubbles, cavities, etc., which will affect the quality of the floor.

In addition, when the concrete is poured, the empty box will be subject to a large buoyancy force and float upwards. Therefore, it is necessary to add spacers between the steel bars and the empty box to ensure the thickness of the upper flange. Therefore, it is difficult to ensure the quality of the hollow floor Big

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