Cast-in-situ reinforced concrete hollowed slab

Abstract

A hollow slab of cast-in-place reinforced concrete consists of reinforced concrete (RC) and cavity die-shell wrapped in RC and arranged alternatively. It is featured as setting cast-in-place RC rib between cavity die-shells, using top plate and peripheral side wall as well as bottom of cavity die-shell to form polyhedral cavity with reinforced rib plate, forming female angle on one of horizontal corners at bottom portion between said wall and said bottom, forming said rib flange on female angle by cast-in-place concrete so as to form rib in inverted T form on relevant said rib.

Description

(1) Technical field [0001] The invention relates to a cast-in-place reinforced concrete hollow slab. (2) Background technology [0002] At present, the cast-in-place reinforced concrete hollow slab is a widely used floor structure. The lightweight permanent tire molds filled in it include various hollow tubes and boxes, and the boxes are hollow or solid. For example, the patent No. ZL99249798.1, which the applicant applied for on November 29, 1999, is a utility model patent named "fiber-reinforced thin-walled member for reinforced concrete filling", which discloses a thin-walled formwork member, including an upper plate, The surrounding side walls, the lower bottom, and the upper plate, the surrounding side walls and the lower bottom form a polyhedral cavity. Another example is the patent No. ZL00203695.9 applied by Liang Jun, Shijiazhuang City, Hebei Province on February 23, 2000, and the name is called "combined concrete hidden rib floor cover plate" utility model patent,...

AI Technical Summary

Problems solved by technology

However, in the formed hollow floor, the cast-in-place reinforced concrete ribs formed between the cavity formwork members are all rectangular cast-in-place reinforced concrete ribs, and their mechanical properties are not very reasonable, and it is often necessary to increase the cast-in-place reinforced concrete ribs. The cross-sectional size of the concrete rib increases the amount of steel bars and concrete, and increases the cost of the floor. At the same time, there is no reinforcement structure in the cavity formwork member, so the overall strength and rigidity of the cavity formwork member are poor, and cavities are prone to appear. The damage of the formwork components brings inconvenience to the construction and increases the construction cost accordingly. Moreover, it cannot participate in the force and transmission of the hollow floor well.

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