Metal corrugated thin wall stuffing mold tube

Abstract

The thin wall corrugated metal pipe as stuffing mold includes one stuffing mold pipe and end plugs and features that the cross section of the stuffing mold pipe is quadrange with rounded angles. When the stuffing mold pipe is used in hollow floor board, the in-situ cast concrete rib formed between stuffing mold pipes has the shape of arc transitional rectangle, which has less consumption of concrete, small dead weight, good antiseismic performance superior to in-situ concrete rib formed with circular corrugated pipe. The present invention has high strength, high deformation and vibration resistance, convenient construction and transportation, and other features. The present invention is suitable for use in in-situ cast hollow beam-less reinforced concrete floor board as well as roofing, base board, wall and hollow bridge.

Description

(1) Technical field [0001] The invention relates to a metal corrugated thin-wall tire mold tube. (2) Background technology [0002] At present, in the prior art, the hole-forming components of the cast-in-place hollow floor are permanent mandrels, such as paper tubes, plastic tubes, metal bellows, and lightweight materials for mandrels. These tubular mandrels or components are mainly considered to evacuate the concrete to reduce the weight of the floor. Such as metal bellows, which is formed by metal winding, has the advantages of high strength, anti-deformation, good anti-vibration performance, convenient construction and transportation, etc. The cross-sectional shape of the pipe is circular. However, after it is applied to the cast-in-place hollow floor, since the tubular concrete in the center of the metal bellows of the reinforced concrete floor has been evacuated, there are cast-in-place concrete ribs along the longitudinal direction of the pipe, and the central part o...

AI Technical Summary

Problems solved by technology

However, after it is applied to the cast-in-place hollow floor, since the tubular concrete in the center of the metal bellows of the reinforced concrete floor has been evacuated, there are cast-in-place concrete ribs along the longitudinal direction of the pipe, and the central part of the formed cast-in-place concrete rib is thin. The upper and lower ends are thick. In order to ensure the strength and rigidity of the ribs, it is often necessary to increase the thickness of the ribs, resulting in large consumption of reinforced concrete for the floor, self-heavy weight, and poor seismic performance.

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