Reinforced concrete internal mold with multi-direction fixed supports

Abstract

The invention relates to a reinforced concrete internal mold, in particular to a reinforced concrete internal mold with multi-direction fixed supports, which comprises a hollow cylinder and end covers at two ends, wherein positioning pins are arranged at the bottom of each of the end covers; clamping grooves and connecting holes are arranged on the positioning pins; the hollow cylinder is a quasi-circular cylinder; the cross section of the hollow cylinder is in the shape of a quasi-circle formed by cutting part of circular arcs at the top and the bottom of a circle, wherein the upper side and the lower side of the quasi-circle are straight, and the left side and the right side of the quasi-circle are circular arcs; each end cover is in the shape of a quasi-circle corresponding to the cross section of the hollow cylinder; at least a pair of fixed supports are arranged in the positions of circular arc sections at the left side and the right side of each end cover; positioning holes are arranged on the fixed supports; a plurality of fixed supports are uniformly arranged on the inner wall of each end cover along the radial direction; and the hollow cylinder is formed by ultrasonic welding of PVC sheets. The invention has the advantages of convenient positioning and easy construction, can not generate displacement easily, and can obtain higher hollow ratio of floor slabs.

Description

【Technical field】 [0001] The invention relates to an inner form for a building floor, in particular to a reinforced concrete inner form used in the technology of cast-in-place hollow floor slabs. 【Background technique】 [0002] Reinforced concrete inner formwork is an important component used to manufacture concrete slab structures. Its main function is to hollow out the concrete, reduce the structural weight of the slab, and improve the mechanical performance of the slab structure at the same time. The cast-in-place hollow slab generally includes reinforced concrete, a hollow inner mold, and the two ends of the hollow inner mold are sealed by plugs. The hollow inner mold is wrapped in the cast-in-place reinforced concrete, and ribs are formed between the thin-walled tubes. There are steel bars connecting between them, so the cast-in-place reinforced concrete hollow floor slab composed of hollow membrane, steel bar and concrete has good force bearing and force transmission p...

AI Technical Summary

Problems solved by technology

[0003] (1) It is inconvenient to install, and it is necessary to add additional connectors to fix the inner mold, and the construction efficiency is low;

[0004] (2) The position of the inner mold is difficult to locate according to the design requirements, and the inner mold is easy to shift under the action of buoyancy and impact force during the construction process;

[0005] (3) Poor buoyancy resistance

[0006] (4) High installation cost

The cost of the project is increased due to the cumbersome construction procedures, low work efficiency, and the need to install additional connectors to fix the inner mold;

[0007] (5) At present, the inner molds used in engineering mostly use cement pipes, which are heavy, inconvenient for transportation, and easy to be damaged

However, the cost of the metal pipe is too high, the strength of the paper pipe is insufficient, and it is difficult to bear the construction load and the pressure of the concrete, which are not ideal.

[0008] (6) With one-way self-stabilizing type, because of its single fixing direction, it cannot meet the multi-directional fixing requirements

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