CN216109345U

CN216109345U - Prefabricated assembled type ultrahigh-performance concrete prestress I-shaped beam

Info

Publication number: CN216109345U
Application number: CN202122606833.0U
Authority: CN
Inventors: 余晗; 敖晓钦; 张耀辉; 舒绍云
Original assignee: Central South Architectural Design Institute Co Ltd
Current assignee: Central South Architectural Design Institute Co Ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-03-22
Anticipated expiration: 2031-10-28

Abstract

The utility model discloses a prefabricated assembly type ultrahigh-performance concrete prestress I-shaped beam which comprises an upper flange (1), a lower flange (2) and a web (3) arranged between the upper flange and the lower flange, wherein a plurality of upper reinforcing plates (4) are distributed at intervals inside the upper flange (1), a plurality of prestressed reinforcements (7) are fixedly connected with the upper flange, a plurality of fixing plates (5) are distributed at intervals inside the web (3), a plurality of prestressed reinforcements (7) are fixedly connected with the web, a plurality of reinforcement through holes (6) used for penetrating through the prestressed reinforcements (7) are respectively formed in the upper reinforcing plates (4) and the fixing plates (5), a plurality of tension resisting plates (8) are distributed at intervals inside the lower flange (2), a plurality of steel strands (10) are fixedly connected with the tension resisting plates (8), and a plurality of strand through holes (9) used for penetrating through the steel strands (10) are formed in the tension resisting plates (8). The utility model can improve the structural strength and the anti-distortion capability of the I-shaped beam, and has simple structure and convenient production and construction.

Description

Prefabricated assembled type ultrahigh-performance concrete prestress I-shaped beam

Technical Field

The utility model belongs to the technical field of precast concrete, and particularly relates to a prefabricated assembled type ultrahigh-performance concrete prestressed I-shaped beam.

Background

The cross section of the H-shaped beam is H-shaped, the flange on the upper side of the H-shaped beam is called an upper flange, the flange on the lower side of the H-shaped beam is called a lower flange, the plate connecting the upper flange and the lower flange is called a web plate, and the H-shaped beam with the unequal wings is called an H-shaped beam with the unequal widths of the upper flange and the lower flange. The H-shaped beam comprises a steel beam, a reinforced concrete beam and a prestressed reinforced concrete beam, and the latter two are generally unequal-wing H-shaped beams with upper flanges larger than lower flanges, which are also called I-shaped beams.

Chinese patent CN208917657U discloses a prefabricated assembly type ultrahigh-performance concrete prestressed i-shaped beam, which comprises an upper flange, a web and a lower flange, wherein two ends of the web are respectively connected with the upper flange and the lower flange, only prestressed steel bars are arranged in the lower flange, an L-shaped notch is arranged at the top of the upper flange, only prestressed steel bars and shear keys are arranged in the upper flange, one part of the shear keys is embedded in the upper flange, and the other part of the shear keys is exposed outside the upper flange. In the scheme, because the prestressed steel bars are only arranged in the upper flange and the lower flange, the beam body is easily distorted in the actual use process, and the building safety is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a prefabricated ultrahigh-performance concrete prestressed I-shaped beam which can improve the structural strength and the anti-distortion capability of the I-shaped beam, and is simple in structure and convenient and fast to produce and construct.

The technical scheme adopted by the utility model is as follows:

the utility model provides a prefabricated assembled ultra high performance concrete prestressing force I shaped beam, including top flange (1), bottom flange (2) and establish web (3) between the two, the inside interval distribution of top flange (1) has a plurality of reinforcing plates (4) of going up, the connection is fixed with a plurality of prestressing steel (7), the inside interval distribution of web (3) has a plurality of fixed plates (5), the connection is fixed with a plurality of prestressing steel (7), it all sets up a plurality of reinforcing bar perforation (6) that are used for passing prestressing steel (7) on reinforcing plate (4) and fixed plate (5), the inside interval distribution of bottom flange (2) has a plurality of anti-tension plates (8), the connection is fixed with a plurality of steel strands (10), set up a plurality of stranded conductor perforation (9) that are used for passing steel strand (10) on tensile plate (8).

Preferably, the upper reinforcing plate (4) is in an inverted triangle shape, the fixing plate (5) is in a vertical bar shape, and the tension plate (8) is in a triangle shape.

Preferably, the steel bar through holes (6) and the prestressed steel bars (7) are distributed at the left and right corners and the central position of the upper reinforcing plate (4) and at the upper and lower ends of the fixing plate (5), and the strand through holes (9) and the steel strands (10) are distributed at the three corners and the central position of the tensile plate (8).

Preferably, the left side and the right side of the web plate (3) are fixedly connected with a plurality of reinforcing ribs (11) which are distributed at equal intervals, the reinforcing ribs (11) are plate-shaped, and the upper end and the lower end of each reinforcing rib are fixedly connected with the upper flange (1) and the lower flange (2) respectively.

Preferably, the steel strand (10) is formed by spirally weaving five strands of steel wires in a twist shape.

Preferably, the thickness of the upper reinforcing plate (4), the fixing plate (5) and the tensile plate (8) is 5-10 mm.

Preferably, the left side and the right side of the upper end of the upper flange (1) are provided with placing grooves (12) for placing the floor slab, and the width of the placing grooves (12) is 500-800 mm.

The utility model has the beneficial effects that:

through reinforcing plate (4), fixed plate (5) and tensile plate (8) on the interval distribution inside the I shape roof beam, not only can improve I shape roof beam structural strength, can also utilize reinforcing bar perforation (6) and stranded conductor perforation (9) to cooperate respectively and pass prestressing steel (7) and steel strand wires (10) to effectively improve the antitorque bent ability of I shape roof beam, guarantee building safety, whole roof beam body simple structure, it is convenient to produce the construction.

Drawings

Fig. 1 is a schematic structural diagram of a prefabricated ultrahigh-performance concrete prestressed i-beam in the embodiment.

Fig. 2 is a front view of the prefabricated ultra-high performance concrete prestressed i-beam according to the present embodiment.

Fig. 3 is a schematic view of the upper reinforcing plate in the present embodiment.

Fig. 4 is a schematic view of the fixing plate in the present embodiment.

Fig. 5 is a schematic view of the tension plate in this embodiment.

In the figure: 1-upper flange; 2-a lower flange; 3-a web; 4-upper reinforcing plate; 5, fixing a plate; 6-punching the steel bars; 7-prestressed reinforcement; 8-a tensile plate; 9-perforating the stranded wire; 10-steel strand wires; 11-reinforcing ribs; 12-placing the groove.

Detailed Description

The utility model is further described below with reference to the figures and examples.

As shown in fig. 1 to 5, a prefabricated assembled ultra-high performance concrete prestressed i-shaped beam, including top flange 1, bottom flange 2 and web 3 established between the two, the inside interval distribution of top flange 1 has a plurality of upper reinforcing plates 4, connect and be fixed with a plurality of prestressing steel 7, the inside interval distribution of web 3 has a plurality of fixed plates 5, connect and be fixed with a plurality of prestressing steel 7, all set up a plurality of reinforcing bar perforation 6 that are used for passing prestressing steel 7 on upper reinforcing plate 4 and the fixed plate 5, the inside interval distribution of bottom flange 2 has a plurality of pulling resisting plate 8, connect and be fixed with a plurality of steel strands 10, set up a plurality of stranded conductor perforation 9 that are used for passing steel strand 10 on pulling resisting plate 8.

As shown in fig. 1 to 5, in the present embodiment, the upper reinforcing plate 4 is in an inverted triangle shape, the fixing plate 5 is in a vertical bar shape, and the tension-resisting plate 8 is in a triangle shape, and the shapes of the three are set according to the cross sections of the components where the three are located, so as to ensure the structural strength.

As shown in fig. 1 to 5, in the present embodiment, the reinforcement perforation 6 and the prestressed reinforcement 7 are distributed at two corners and a central position of the upper reinforcing plate 4 and at two ends of the fixing plate 5, and the strand perforation 9 and the steel strand 10 are distributed at three corners and a central position of the tensile plate 8, so as to ensure a good anti-twisting capability.

As shown in fig. 1 and 2, in the present embodiment, a plurality of reinforcing ribs 11 are connected and fixed to the left and right sides of the web 3, and the reinforcing ribs 11 are plate-shaped, and the upper and lower ends of the reinforcing ribs 11 are respectively connected and fixed to the upper flange 1 and the lower flange 2, so as to further improve the structural strength of the i-shaped beam and improve the anti-twisting capability of the i-shaped beam.

In this embodiment, the steel strand 10 is formed by spirally weaving five steel wires in a twisted shape, so that the tensile strength of the lower flange 2 is improved.

In the embodiment, the thickness of the upper reinforcing plate 4, the fixed plate 5 and the tensile plate 8 is 5-10mm, the size is small, the material can be saved, and the dead weight is reduced.

In this embodiment, the standing groove 12 that is used for placing the floor is all seted up to the upper end left and right sides of top flange 1, and the width of standing groove 12 is 500 plus 800mm, makes things convenient for follow-up construction assembly.

In the utility model, the upper reinforcing plates 4, the fixed plates 5 and the tensile plates 8 are distributed at intervals in the I-shaped beam, so that the structural strength of the I-shaped beam can be improved, and the steel bar through holes 6 and the strand through holes 9 can be respectively matched with and penetrate through the prestressed steel bars 7 and the steel strands 10, thereby effectively improving the anti-distortion capability of the I-shaped beam, ensuring the building safety, and the whole beam body has a simple structure and is convenient to produce and construct.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the utility model as defined in the appended claims.

Claims

1. The utility model provides a prefabricated assembled ultrahigh performance concrete prestressing force I shape roof beam, includes top flange (1), bottom flange (2) and establishes web (3) between the two, its characterized in that: the inside interval distribution of top flange (1) has a plurality of reinforcing plates (4), the connection is fixed with a plurality of prestressing steel (7), the inside interval distribution of web (3) has a plurality of fixed plates (5), the connection is fixed with a plurality of prestressing steel (7), all set up a plurality of reinforcing bar perforation (6) that are used for passing prestressing steel (7) on top reinforcing plate (4) and fixed plate (5), the inside interval distribution of bottom flange (2) has a plurality of anti-pulling plate (8), the connection is fixed with a plurality of steel strand wires (10), set up a plurality of stranded conductor perforation (9) that are used for passing steel strand wires (10) on tensile plate (8).

2. The precast assembled ultra-high performance concrete prestressed i-beam as claimed in claim 1, wherein: the upper reinforcing plate (4) is in an inverted triangle shape, the fixing plate (5) is in a vertical bar shape, and the tension resisting plate (8) is in a triangle shape.

3. The precast assembled ultra-high performance concrete prestressed i-beam as claimed in claim 2, wherein: reinforcing steel bar through holes (6) and prestressed reinforcing steel bars (7) are distributed at the left corner, the right corner and the central position of the upper reinforcing plate (4) and at the upper end and the lower end of the fixing plate (5), and stranded wire through holes (9) and steel stranded wires (10) are distributed at the three corners and the central position of the tensile plate (8).

4. The precast assembled ultra-high performance concrete prestressed i-beam as claimed in claim 1, wherein: the left side and the right side of the web plate (3) are fixedly connected with a plurality of reinforcing ribs (11) which are distributed at equal intervals, the reinforcing ribs (11) are plate-shaped, and the upper end and the lower end of each reinforcing rib are respectively fixedly connected with the upper flange (1) and the lower flange (2).

5. The precast assembled ultra-high performance concrete prestressed i-beam as claimed in claim 1, wherein: the steel strand (10) is formed by spirally weaving five strands of steel wires in a twist shape.

6. The precast assembled ultra-high performance concrete prestressed i-beam as claimed in claim 1, wherein: the thicknesses of the upper reinforcing plate (4), the fixed plate (5) and the tensile plate (8) are 5-10 mm.

7. The precast assembled ultra-high performance concrete prestressed i-beam as claimed in claim 1, wherein: the standing groove (12) that are used for placing the floor are all seted up to the upper end left and right sides of top flange (1), and the width of standing groove (12) is 500 and serves 800 mm.