Concrete floor slab adopting hollow formwork and rapid construction method thereof

Abstract

The application relates to a concrete floor slab adopting hollow formwork. The floor slab comprises a plurality of sets of box bodies and steel bar assemblies, wherein all sets of frames of the box bodies are of angle steel structures, and the height of the box bodies is larger than that of core molds; the inner bottom surface of the box body is matched with the lower end surface of each group of to-be-mounted core molds in shape; supporting legs are fixed to the four corners of the lower end face of the box body, inserting holes are formed in four sets of vertically-arranged frames of the box body, and the distance between each set of inserting holes and the inner bottom face of the box body is the same as the height of the core mold. Bases are fixed to the four sets of vertically arranged vertical frames, springs are installed in all the sets of bases, and wedge-shaped blocks are inserted into inserting holes in a sliding mode; the steel bar assembly comprises upper-layer steel bars and lower-layer steel bars which are distributed on the upper end faces and the lower end faces of the box bodies correspondingly. According to the technical scheme, compared with an existing binding and fixing operation mode, the operation efficiency is high when the core mold is installed, and the position stability after the core mold is installed is improved.

Description

technical field [0001] The application relates to the field of building construction, in particular to a concrete floor slab using a hollow formwork and a rapid construction method thereof. Background technique [0002] The hollow slab is a slab containing a light solid block hollow box formed in the slab after placing the embedded inner form according to certain rules and pouring concrete on site. Compared with solid slabs, hollow slabs of the same thickness can still meet the requirements of bending resistance, shear resistance, punching resistance, deflection, and cracks. Since the weight of the slab is reduced by about 40-50%, the internal force of the beam, slab, column and wall is reduced, and the foundation load is reduced. Save structural materials and reduce engineering cost. [0003] Since the concrete in the middle of the concrete slab is replaced by the aluminum foil mandrel, the weight of the slab is reduced by about 40-50% compared with the solid slab of equal...

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Problems solved by technology

[0005] In view of the above-mentioned related technologies, the inventor believes that there are the following defects: in the existing construction process, the construction personnel fix each group of core molds on the formwork with the help of steel wires during the installation of the core molds; Winding in one direction and bypassing the steel bars at the bottom; in the installation process of the above-mentioned mandrel, a large number of binding operations lead to low overall construction efficiency, which is difficult to meet the tight construction period of the project, so there is room for improvement in the process.

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