Cavity structural member for cast-in-place concrete formation

Abstract

The cavity member for in-site concrete deposition includes upper plate, side walls and lower plate to form the polyhedral cavity member with at least one reinforcing plate inside the cavity; and features that there are at least one notch set between side wall and the lower plate and at least one vertical notch set in the side walls of the cavity member. When the cavity member is used in in-site concrete deposition of floor slab, turned T-shaped rib is formed to raise the mechanical performance of the floor slab greatly, and vertical column or reinforcing rib is formed to further raise the mechanical performance of the floor slab. The cavity member has the features of simple structure, high strength, high deformation and vibration resistance, high construction speed, etc. and is suitable for use in in-site deposited and pre-stressed hollow reinforced concrete floor slab, roof slab, wall, base slab and open web bridge, especially hollow no-beam floor slab.

Description

(1) Technical field [0001] The invention relates to a cavity component for cast-in-place concrete molding. (2) Background technology [0002] At present, the cast-in-place concrete hollow floor 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, whi...

AI Technical Summary

Problems solved by technology

However, after being applied to the hollow floor, the cast-in-place concrete ribs formed between the cavity components are all rectangular cast-in-place concrete ribs, and their mechanical performance is not very reasonable, so it is often necessary to increase the cross-sectional size of the cast-in-place concrete ribs The consumption of steel bar and concrete increases the cost of the floor, therefore, it is urgently needed to develop a new type of cavity member for cast-in-place concrete molding.

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