CN215519525U - Strenghthened type prestressed concrete wild goose shaped plate - Google Patents
Strenghthened type prestressed concrete wild goose shaped plate Download PDFInfo
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- CN215519525U CN215519525U CN202121112804.2U CN202121112804U CN215519525U CN 215519525 U CN215519525 U CN 215519525U CN 202121112804 U CN202121112804 U CN 202121112804U CN 215519525 U CN215519525 U CN 215519525U
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Abstract
The utility model relates to the technical field of concrete roof components, in particular to a reinforced prestressed concrete wild goose-shaped plate which can be used as a large-span roof plate in an industrial building, wherein a first flange plate and a second flange plate are inclined downwards and intersect relatively, a main rib is arranged below the intersection point of the first flange plate and the second flange plate, the thickness h1 of the upper end plate of the first flange plate and the second flange plate is smaller than the thickness h2 of the lower end plate of the first flange plate and the second flange plate, steel belts are arranged on the outer sides of the bottoms of the first flange plate and the second flange plate, the two steel belts are connected through connecting steel bars, the bending bearing capacity of the flange plates can be effectively enhanced while the transverse ribs are cancelled, the construction is simple and convenient, and the increase of the manufacturing cost is very limited.
Description
Technical Field
The utility model relates to the technical field of concrete roof components, in particular to a reinforced prestressed concrete wild goose-shaped plate which can be used as a large-span roof plate in an industrial building.
Background
The prefabricated concrete roof panel is used as a main stressed member of a large-span industrial factory building, the reduced thickness of the prefabricated concrete roof panel is only 70-90 mm, high-strength concrete and high-strength steel bars are adopted, a mold is repeatedly used, materials and energy are saved, the national development assembly type building guide is met, and the prefabricated concrete roof panel is widely applied to southwest regions of China. However, when the span is greater than 21m, the plate width is greater than 2m, or high bearing capacity is required for roof installation of solar energy, the outer side of the bottom of the flange plate is bent greatly due to the midspan, the tensile stress exceeds the tensile bearing capacity of concrete, and cracking is easy to occur. And once cracking occurs, the site is difficult to repair, so that the water leakage of the roof is serious, and the structure safety is influenced.
In order to solve the problem of insufficient bending bearing capacity of the flange plate, the existing reinforcement measures as shown in fig. 1 are that upturned transverse ribs 3 ' are additionally arranged at intervals of 2m on the upper part of a flange plate 1 ', and the addition of the upturned transverse ribs 3 ' brings new problems: the pouring is carried out twice, the flat plate part of the flange plate 1 'is poured firstly, then the formwork is erected again on the concrete surface before initial setting, and the upper transverse rib 3' is poured, so that labor and time are wasted; in addition, the existence of the transverse rib 3 'influences the roof drainage, a drainage hole 2' needs to be additionally arranged at the bottom of the transverse rib 3 ', and the drainage hole 2' is easily blocked by roof sundries to cause seeper leakage.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the utility model provides a strenghthened type prestressed concrete wild goose shaped plate that can also effectively strengthen the bearing capacity that is bent of flange board when cancelling the cross rib.
The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a strenghthened type prestressed concrete wild goose shaped plate, including first flange board, second flange board and main rib, relative downward sloping is crossing between first flange board and the second flange board, the below of the crossing department of first flange board and second flange board is equipped with the main rib, the thick h1 of the upper end board of first flange board and second flange board is less than the thick h2 of the lower extreme board of first flange board and second flange board, the bottom outside of first flange board and second flange board all is equipped with the steel band, connect through connecting reinforcement between two steel bands.
Furthermore, the connecting reinforcing steel bars penetrate through the main rib, so that the steel belts on two sides are effectively anchored in the main rib through pulling force, the incompact concrete pouring is avoided, the circular arc transition sections are arranged at the joints of the first flange plate and the second flange plate with the main rib, and the joints of the steel belts and the connecting reinforcing steel bars are located in the circular arc transition sections, so that stress concentration can be reduced.
Further, be equipped with a plurality of pegs on the steel band, the peg welding is on the steel band, and the effect of peg is to ensure to strengthen the effective shearing of concrete and pass power on steel band and first, the second flange board, strengthens the steel band and enables the effective height h0 maximize that bends, can improve about 30% of the bearing capacity that bends, connects through connecting reinforcement between the adjacent steel band of strengthening.
Furthermore, the distance between adjacent steel belts is 1-3 m.
Furthermore, the first flange plate, the second flange plate and the main rib form an integral structure through pouring concrete.
The utility model has the beneficial effects that: the utility model can effectively enhance the bending bearing capacity of the flange plate while canceling the transverse rib, and has simple and convenient construction and very limited cost increase.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram of a prior art configuration;
FIG. 2 is a schematic structural diagram of a preferred embodiment of the present invention;
FIG. 3 is a cross-sectional view taken along line 1-1 of FIG. 1 in accordance with the present invention;
fig. 4 is a schematic view showing the construction of the steel strip and the connecting bar according to the present invention.
In the figure: 1. the structure comprises a first flange plate, a second flange plate, a main rib, a steel belt, a stud hole, a connecting steel bar, a bolt hole, a connecting steel bar, a flange plate, a drainage hole and a transverse rib, wherein the flange plate is 2, the second flange plate, the main rib is 3, the steel belt is 5, the bolt hole is 6, and the transverse rib is 1'.
Detailed Description
The utility model will now be described in further detail with reference to the drawings and preferred embodiments. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 2 ~ 4 a strenghthened type prestressed concrete wild goose type plate, including first flange board 1, second flange board 2 and main rib 3, relative downward sloping is crossing between first flange board 1 and the second flange board 2, the below of the intersection department of first flange board 1 and second flange board 2 is equipped with main rib 3, the thick h1 of the upper end board of first flange board 1 and second flange board 2 is less than the thick h2 of the lower extreme board of first flange board 1 and second flange board 2, the bottom outside of first flange board 1 and second flange board 2 all is equipped with steel band 4, connect through connecting reinforcement 6 between two steel band 4, the welding between 4 remaining connecting reinforcement 6 of steel band is the overlap joint welding, be equipped with a plurality of pegs 5 on the steel band 4, peg 5 welding is on steel band 4, the interval between the adjacent steel band 4 is 2 m.
Connecting reinforcement 6 passes main rib 3 and sets up, and first flange board 1 and second flange board 2 are equipped with the circular arc changeover portion with the junction of main rib 3, and steel band 4 is located the circular arc changeover portion with connecting reinforcement 6's junction.
The first flange plate 1, the second flange plate 2 and the main rib 3 form an integral structure through pouring concrete.
The upper ends of the first flange plate 1 and the second flange plate 2 are hinged and the lower ends of the first flange plate 1 and the second flange plate 2 are fixedly connected, after the first flange plate 1 and the second flange plate 2 bear loads, bending moment is gradually increased downwards, and bending moment of the root of the lower end is the largest, so that in order to enhance bending bearing capacity of the root of the flange plate, firstly, the thickness of the lower end h2 of the first flange plate 1 and the second flange plate 2 is slightly increased by about 20% compared with that of the upper end h1, concrete consumption of the whole component is increased by about 5%, but the bending bearing capacity of the first flange plate 1 and the second flange plate 2 is increased by 15%;
secondly, steel belts 4 are additionally arranged on the outer sides of the bottoms of the first flange plate 1 and the second flange plate 2, studs 5 are welded on the steel belts 4, the studs are used for ensuring effective shearing resistance and force transmission of the steel belts and concrete, the effective bending height ho can be maximized by the steel belts attached to the outer sides, the bending bearing capacity can be improved by about 30%, and the steel consumption is hardly increased; the two strengthening measures are combined to improve the bearing capacity of the flange plate by 40 percent.
Meanwhile, in order to ensure effective anchoring of the steel belts 4 at the roots of the first flange plate 1 and the second flange plate 2, the steel belts 4 on two sides are welded and connected by bending reinforcing ribs 7 in the range of the main rib at the bottom and are mutually anchored.
Pouring:
after the mould is in place, putting the steel reinforcement cage in the main rib 3; then placing the steel belt 4, penetrating the welded steel belt 4, the stud 5 and the connecting steel bar 6 combination body into the steel bar cage of the main rib 3, and spot-welding the steel bar on the main rib 3 to ensure that the steel bar does not shift during pouring; and finally, placing the reinforcing steel meshes in the first flange plate 1 and the second flange plate 2, and pouring and maintaining the other materials according to a conventional manufacturing method.
While particular embodiments of the present invention have been described in the foregoing specification, the present invention is not limited to the specific embodiments, and modifications and variations of the foregoing detailed description can be made by those skilled in the art without departing from the spirit and scope of the utility model.
Claims (5)
1. The utility model provides a wild goose shaped plate of strenghthened type prestressed concrete, includes first flange board (1), second flange board (2) and main rib (3), and relative downward sloping is crossing between first flange board (1) and second flange board (2), and the below of the crossing point department of first flange board (1) and second flange board (2) is equipped with main rib (3), its characterized in that: the thick h1 of the upper end board of first flange board (1) and second flange board (2) be less than the thick h2 of the lower extreme board of first flange board (1) and second flange board (2), the bottom outside of first flange board (1) and second flange board (2) all is equipped with steel band (4), connects through connecting reinforcement (6) between two steel band (4).
2. The reinforced prestressed concrete goose-shaped plate of claim 1, wherein: connecting reinforcement (6) pass main rib (3) and set up, the junction of first flange board (1) and second flange board (2) and main rib (3) is equipped with the circular arc changeover portion, steel band (4) and connecting reinforcement (6) the junction be located the circular arc changeover portion.
3. The reinforced prestressed concrete goose-shaped plate of claim 1, wherein: the steel belt (4) is provided with a plurality of studs (5).
4. The reinforced prestressed concrete goose-shaped plate of claim 3, wherein: the distance between the adjacent steel belts (4) is 1-3 m.
5. The reinforced prestressed concrete goose-shaped plate of claim 1, wherein: the first flange plate (1), the second flange plate (2) and the main rib (3) form an integral structure through pouring concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121112804.2U CN215519525U (en) | 2021-05-24 | 2021-05-24 | Strenghthened type prestressed concrete wild goose shaped plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121112804.2U CN215519525U (en) | 2021-05-24 | 2021-05-24 | Strenghthened type prestressed concrete wild goose shaped plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215519525U true CN215519525U (en) | 2022-01-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121112804.2U Active CN215519525U (en) | 2021-05-24 | 2021-05-24 | Strenghthened type prestressed concrete wild goose shaped plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215519525U (en) |
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2021
- 2021-05-24 CN CN202121112804.2U patent/CN215519525U/en active Active
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