Hollow tube for filling concrete

Abstract

A hollow tube for filling reinforced concrete comprises a tube body (1) and prefabricated plugs (2). The sealed hollow tube is formed by blocking up two ends of the tube body (1) with two prefabricated plugs (2). The invention is characterized in that a rear bonding laminated layer (3) is arranged on at least one of the prefabricated plugs (2) on the end of the tube, the prefabricated plugs (2) and the tube body (1) are bonded as an integral hollow member by the rear bonding laminated layer (3). A reinforcing member (5) is arranged in the tube body (1), the reinforcing member (5) is a stiffening rib or / and a bracing piece or / and a strengthening rib or / and a strengthening rope. The hollow tube is applicable to hollow plates, floors, roofs, walls, soleplates and open-spandrel bridges of the cast-in-situ or pre-stress reinforced concrete, in particular to the hollow beamless floors.

Description

[0001] This application is a divisional application of an invention patent application with a filing date of November 2, 2004, an application number of 200410155423.7, and a title of "a hollow tube for concrete filling". (1) Technical field [0002] The invention relates to a hollow pipe for concrete filling. (2) Background technology [0003] 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" disclos...

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

However, the connection between the plug and the pipe body of this kind of hollow thin-walled pipe is not reliable, and it is prone to separation, cracking or falling off. The plate has a large difference in longitudinal and transverse stiffness and poor seismic performance

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