Hollow pipe for filling concrete

Abstract

The hollow pipe for concrete filling includes pipe and two end plugs to close ends of the pipe to form cavity. The hollow pipe features that at least one end plug is plugged into inside of the pipe to form one end cavity, into which the in-situ deposited concrete enters to form reinforcing rib with transverse combination with the plug. The present invention has reduced difference in longitudinal and transverse rigidity, raised antiseismic performance, and the hollow pipe has also high strength, less deformation and other features, and is suitable for use in in-situ reinforced concrete or pre-stressed reinforced concrete floor slab, roof, base board, wall and hollow bridge.

Description

(1) Technical field [0001] The invention relates to a hollow pipe for concrete filling. (2) Background technology [0002] At present, the cast-in-situ concrete hollow floor is more and more widely used due to its advantages of fast construction, low formwork loss, large bays, flexible partitions, and low self-weight. The hole-forming components are usually hollow thin-walled tubes, such as paper tubes, cement tubes, etc., which have the disadvantages of poor strength, low deformation resistance, and poor vibration and deformation resistance. For this reason, the applicant's application number is 99115649.8 and the name is The invention patent of "fiber-reinforced hollow thin-walled pipe for filling reinforced concrete and its manufacturing method" discloses a hollow thin-walled pipe including a pipe body and a plug, and the two plugs seal both ends of the pipe body to form a closed cavity The thin-walled tube has excellent properties such as high strength, deformation resi...

AI Technical Summary

Problems solved by technology

The hole-forming components are usually hollow thin-walled tubes, such as paper tubes, cement tubes, etc., which have the disadvantages of poor strength, low deformation resistance, and poor vibration and deformation resistance. For this reason, the applicant's application number is 99115649.8 and the name is The invention patent of "fiber-reinforced hollow thin-walled pipe for filling reinforced concrete and its manufacturing method" discloses a hollow thin-walled pipe including a pipe body and a plug, and the two plugs seal both ends of the pipe body to form a closed cavity Thin-walled tubes have excellent properties such as high strength, deformation resistance, and vibration resistance, and are easy to manufacture, practical, economical, and easy to promote

But after this hollow thin-walled pipe is applied to the cast-in-place concrete hollow floor, a one-way hollow slab is formed, which has a large difference in vertical and horizontal stiffness and poor seismic performance. Therefore, it is urgent to develop a new type of hollow pipe for concrete filling.

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