Cast-in-situ reinforced concrete hollow slab

Abstract

A cast-in-place reinforced concrete hollow slab, comprising reinforced concrete (1), a hollow tube (2), the hollow tube (2) is embedded in the reinforced concrete (1), wherein two plugs (3) of the hollow tube (2) The two ends of the pipe body (4) are blocked to form a closed hollow pipe, and the pipe ends of a plurality of hollow pipes (2) are arranged in groups adjacent to the coaxial line, and it is characterized in that at least one end of the hollow pipe (2) is plugged ( 3) Sink into the pipe body (4) to form the pipe end pelvic cavity (5), the plug (3) where the plug (3) meets the pipe wall has a superimposed reinforcing edge (6), and the cast-in-place concrete enters the pipe In the end pelvic cavity (5), cast-in-situ concrete inter-end ribs (7) are jointly formed. In this way, the difference in longitudinal and lateral rigidity of the hollow slab is greatly reduced, and the seismic performance is improved; at the same time, the construction of the hollow slab is more convenient and the construction cost is lower, and it is suitable for hollow floors, roofs, It can be used in foundation slabs, walls and vierendeel bridges, and is especially suitable for cast-in-place reinforced concrete hollow beamless floors.

Description

(1) Technical field [0001] The invention relates to a cast-in-place reinforced concrete hollow slab. (2) Background technology [0002] At present, cast-in-place concrete hollow slabs are more and more widely used due to their 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 reinforced concrete filling and its manufacturing method" discloses a hollow thin-walled pipe with high strength, anti-deformation, anti-vibration and other excellent properties, and is simple, practical, economical and easy to manufacture. promote. This kind of hollow tub...

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 reinforced concrete filling and its manufacturing method", the hollow thin-walled pipe disclosed by it has excellent properties such as high strength, deformation resistance, and vibration resistance, and is simple, practical, economical and easy to manufacture. to promote

This kind of hollow tube is applied to the cast-in-place reinforced concrete hollow slab. The formed hollow slab includes reinforced concrete and hollow tubes. The hollow tube is embedded in the reinforced concrete. The two plugs of the hollow tube seal the two ends of the tube body to form a closed The hollow tubes, a plurality of hollow tube ends are arranged in groups adjacent to the coaxial line, and the hollow plate formed is a one-way hollow plate, which has a large difference in longitudinal and transverse stiffness and poor seismic performance. Therefore, a new type of hollow plate is developed. Cast-in-place reinforced concrete hollow slabs are in urgent need

Images