Prestressed reinforced concrete superposed beam having convex-concave superposed surfaces

Abstract

The invention discloses a prestressed reinforced concrete superposed beam having convex-concave superposed surfaces. The prestressed reinforced concrete superposed beam having convex-concave superposed surfaces comprises an inverted T-shaped precast prestressed beam and an inverted U-shaped post-poured reinforced concrete part. The inverted T-shaped precast prestressed beam and the inverted U-shaped post-poured reinforced concrete part compose a rectangular structure or a rectangular superposed beam of which an upper part is connected to a floor. The prestressed reinforced concrete superposed beam having convex-concave superposed surfaces is characterized in that prestressed steel strands are longitudinally embedded in the inverted T-shaped precast prestressed beam; U-shaped stirrups are embedded in flanges of the inverted T-shaped precast prestressed beam; rectangular stirrups are embedded in a web; a stirrup pouring anchor is fixed in the inverted U-shaped post-poured reinforced concrete part; and the rebars are longitudinally embedded in an upper part of the inverted U-shaped post-poured reinforced concrete part of the prestressed reinforced concrete superposed beam. The prestressed reinforced concrete superposed beam has an inverted T-shaped cross section and small self-weight, is convenient for transport and reduces tower crane hoisting requirements.

Description

technical field [0001] The invention relates to a reinforced concrete beam, in particular to a prefabricated integral cast composite beam. Background technique: [0002] In the prefabricated cast-in-place structural system, a prefabricated main girder used to rest the prefabricated secondary girder usually adopts a rectangular cross-section. The solution is to leave holes and other measures. The structure of the joints of the beams is relatively complicated, and for the convenience of installation, a shelving pick must be left on the secondary beams. It is also relatively poor, and the construction is also inconvenient. There is no report on a secondary beam that is easy to place, and a main beam in which inverted T-shaped prefabricated beams are stacked into rectangular beams. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a prestressed reinforced...

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Problems solved by technology

[0002] In the prefabricated cast-in-place structural system, a prefabricated main girder used to rest the prefabricated secondary girder usually adopts a rectangular cross-section. The solution is to leave holes and other measures. The structure of the joints of the beams is relatively complicated, and for the convenience of installation, a shelving pick must be left on the secondary beams. It is also relatively poor, and the construction is inconvenient

There is no report on a secondary beam that is easy to place, and a main beam in which inverted T-shaped prefabricated beams are stacked into rectangular beams.

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