Light tube for filling bidirectional-rib steel bar reinfored concrete

Abstract

The light tube for filling bi-directional-rib steel bar reinforced concrete includes longitudinal tube as well as at least one characterized horizontal tube extending from the longitudinal tube and at least one horizontal notch. The said structure makes the stringboard empty, low in concrete consumption, lgiht high in antiseismic performance, weaker longitudinal rigidity, raised horizontal rigidity and less two-directional rigidity difference to reach the aim of the present invention. In addition, the light tube has also high strength, high deformation resistance, high antiseismic performance, easy construction and transport and other features. The present invention is suitable for various hollow concrete structure, especially in-situ cast hollow stringboard.

Description

(1) Technical field [0001] The invention relates to a lightweight pipe for filling reinforced concrete with two-way ribs. (2) Background technology [0002] At present, in the prior art, the hole-forming components of the cast-in-place hollow floor slab 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 and reduce the weight of the floor slab. For example, the patent No. ZL99249775.8 applied by the applicant is a utility model patent named "fiber-reinforced thin-walled tube for filling cast-in-place reinforced concrete". It consists of a hard thin-walled tube and plugs at both ends. The head seals both ends of the hard thin-walled tube to form a closed cavity. The hard thin-walled tube wall is composed of a matrix and a cementitious material. The matrix can be glass fiber or carbon fiber or organic fiber or non-woven fabric or ...

AI Technical Summary

Problems solved by technology

But after it is applied to the cast-in-place hollow floor, since the tubular concrete in the center of the hard thin-walled tube of the reinforced concrete floor has been evacuated, there are cast-in-place concrete ribs along the longitudinal direction of the tube, and the horizontal direction is due to the reinforced concrete. The components are evacuated, so there is a large difference in stiffness between the two directions of the cast-in-place hollow slab, and it becomes a cast-in-place reinforced concrete hollow one-way slab, which has the disadvantages of large consumption of reinforced concrete, heavy weight, poor seismic performance, and large difference in two-way stiffness.

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