Hot-rolled ribbed section steel for SC composite structure and manufacturing method therefor

Abstract

The present invention relates to a hot-rolled ribbed section steel for an SC composite structure and a manufacturing method therefor. The outer surface of the section steel is provided with a plurality of ribs protruding outward, and the section steel and the ribs are integrally formed by means of hot rolling. The hot-rolled ribbed section steel of the present invention is integrally formed by means of hot rolling, and the outer surface of the section steel is provided with a plurality of ribs protruding outward, thereby enhancing tangential and normal bonding forces between the section steel and concrete. The presence of the ribs can improve the tangential shear resistance and normal anti-detachment bonding effect of concrete on the surface of the section steel. In addition, the ribbed section steel is integrally formed by means of hot rolling, which is simple and convenient to manufacture, thereby solving problems of high welding workload and high manufacturing costs of existing stud and reinforcement cage operations.

Description

Hot-rolled ribbed steel for SC composite structure and manufacturing method thereof TECHNICAL FIELD

[0001] The present application relates to the technical field of structural engineering, in particular to a hot-rolled ribbed steel for SC composite structure and a manufacturing method thereof. BACKGROUND

[0002] The existing SRC steel reinforced concrete structure, such as the steel reinforced concrete column (SRC beam is similar) shown in FIG. 1, includes an internally arranged I-beam 11, column main reinforcement 12 arranged outside the I-beam 11, stirrups 13 arranged outside the column main reinforcement 12, and a concrete structure 14 wrapping the I-beam 11, the column main reinforcement 12, and the stirrups 13. The stirrups 13 are multiple and arranged at intervals along the column main reinforcement 11. The steel reinforced concrete column arranges the column main reinforcement 12 and the stirrups 13 outside the I-beam 11, aiming to improve the normal bonding force between the concrete protection layer outside the I-beam 11 and the steel, prevent the concrete protection layer from falling off, and better work together.

[0003] In the prior art, it is also common to weld studs on the surface of the I-beam 11 to improve the tangential bonding force between the I-beam and the concrete structure, but the arrangement of the studs is troublesome and the workload is large. SUMMARY

[0004] The present application aims to overcome the defects of the prior art and provide a hot-rolled ribbed steel for SC composite structure and a manufacturing method thereof, solving the problems of large workload and high cost in the prior art, i.e., the need to arrange a steel reinforcement framework composed of main reinforcement and stirrups outside the existing steel reinforced concrete column and the need to arrange studs on the surface of the steel to improve the tangential bonding force.

[0005] The technical solution to achieve the above-mentioned purpose is as follows:

[0006] The present application provides a hot-rolled ribbed steel for SC composite structure, wherein the outer surface of the steel is provided with a plurality of outwardly protruding ribs, and the steel and the ribs are integrally formed by hot rolling.

[0007] The hot-rolled ribbed steel of the present application is integrally formed by hot rolling, and a plurality of outwardly protruding ribs are arranged on the surface of the steel, which can improve the tangential and normal bonding force between the steel and the concrete. The arrangement of the ribs can also improve the tangential shear action and the normal anti-falling bonding action of the concrete on the surface of the steel. The ribs are integrally formed by hot rolling, which is simple and convenient to manufacture, solving the problems of high manufacturing cost and large workload existing in the prior art of arranging studs and steel reinforcement frameworks.

[0008] A further improvement of the hot-rolled ribbed steel for SC composite structure of the present application is that the steel is in the shape of L, including a first steel plate and a second steel plate perpendicular to each other, and the outer surfaces of the first steel plate and the second steel plate are provided with the ribs.

[0009] The further improvement of the hot-rolled ribbed steel section for SC composite structure lies in that the section is in an I shape, comprising a first flange plate and a second flange plate oppositely arranged and a web plate supporting and connecting the first flange plate and the second flange plate, and the outer surfaces of the first flange plate and the second flange plate are provided with the ribs.

[0010] The further improvement of the hot-rolled ribbed steel section for SC composite structure lies in that the section is in a cylindrical shape, and the ribs are arranged on the outer surface of the cylindrical shape.

[0011] The further improvement of the hot-rolled ribbed steel section for SC composite structure lies in that the section is in an H shape, comprising a first vertical plate and a second vertical plate oppositely arranged and a horizontal plate supporting and connecting the first vertical plate and the second vertical plate, and the outer surfaces of the first vertical plate and the second vertical plate are provided with the ribs.

[0012] The further improvement of the hot-rolled ribbed steel section for SC composite structure lies in that the ribs are arranged in an inclined manner.

[0013] The further improvement of the hot-rolled ribbed steel section for SC composite structure lies in that the ribs are arranged in a staggered manner along the horizontal and vertical directions.

[0014] The further improvement of the hot-rolled ribbed steel section for SC composite structure lies in that the ribs are arranged in a staggered manner along the horizontal and vertical directions.

[0015] The further improvement of the hot-rolled ribbed steel section for SC composite structure lies in that the ribs are arranged in a staggered manner along the horizontal and vertical directions.

[0016] The application further provides a manufacturing method of the hot-rolled ribbed steel section for SC composite structure, comprising the following steps:

[0017] The hot-rolling roller is manufactured according to the style of the ribs;

[0018] In the hot-rolling of the section, the hot-rolling roller is used for the last pass of the hot-continuous rolling, so as to obtain the hot-rolled section with the ribs on the surface. BRIEF DESCRIPTION OF DRAWINGS

[0019] Fig. 1 is a sectional view of the section concrete column in the prior art.

[0020] Fig. 2 is a structure schematic view of the hot-rolled ribbed steel section for SC composite structure in an L shape according to the application.

[0021] Fig. 3 is a structure schematic view of the hot-rolled ribbed steel section for SC composite structure in an I shape according to the application.

[0022] Fig. 4 is a structure schematic view of the hot-rolled ribbed steel section for SC composite structure in an H shape according to the application.

[0023] Fig. 5 is a schematic view of a cylindrical structure of the hot-rolled ribbed steel bar for the SC composite structure according to the present application.

[0024] Fig. 6 is a schematic view of a first embodiment of the rib provided on the surface of the hot-rolled ribbed steel bar for the SC composite structure according to the present application.

[0025] Fig. 7 is a partial enlarged view of the first embodiment of the rib provided on the surface of the hot-rolled ribbed steel bar for the SC composite structure according to the present application, as viewed in side elevation.

[0026] Fig. 8 is a partial enlarged view of a second embodiment of the rib provided on the surface of the hot-rolled ribbed steel bar for the SC composite structure according to the present application, as viewed in side elevation.

[0027] Fig. 9 is a schematic view of a third embodiment of the rib provided on the surface of the hot-rolled ribbed steel bar for the SC composite structure according to the present application.

[0028] Fig. 10 is a partial enlarged view of the third embodiment of the rib provided on the surface of the hot-rolled ribbed steel bar for the SC composite structure according to the present application, as viewed in side elevation.

[0029] Fig. 11 is a schematic view of a fourth embodiment of the rib provided on the surface of the hot-rolled ribbed steel bar for the SC composite structure according to the present application.

[0030] Fig. 12 is a partial enlarged view of the fourth embodiment of the rib provided on the surface of the hot-rolled ribbed steel bar for the SC composite structure according to the present application, as viewed in side elevation.

[0031] Fig. 13 is a partial enlarged view of a fifth embodiment of the rib provided on the surface of the hot-rolled ribbed steel bar for the SC composite structure according to the present application, as viewed in side elevation.

[0032] Fig. 14 is a partial enlarged view of a sixth embodiment of the rib provided on the surface of the hot-rolled ribbed steel bar for the SC composite structure according to the present application, as viewed in side elevation.

[0033] Fig. 15 is a sectional view of the hot-rolled ribbed steel bar for the SC composite structure according to the present application applied to a composite column. DETAILED DESCRIPTION

[0034] The present application will be further described below with reference to the accompanying drawings and specific embodiments.

[0035] Referring to Fig. 1, the present application provides a hot-rolled ribbed steel for SC composite structure and a manufacturing method thereof. The surface of the hot-rolled ribbed steel is integrally formed with a plurality of ribs by hot-rolling. The ribs are arranged outwardly from the surface of the steel and can improve the tangential and normal bonding force between the steel and the concrete. The ribs can also improve the tangential shearing action and the normal anti-falling bonding action of the concrete on the surface of the steel, so that the composite structure does not need to be provided with reinforcing bars and stirrups and other structures on the outer side of the steel, and the manufacturing is simple and convenient. The hot-rolled ribbed steel for SC composite structure and the manufacturing method thereof of the present application will be described below in combination with the drawings.

[0036] Referring to Fig. 2, a structure schematic diagram of the hot-rolled ribbed steel for SC composite structure of the present application is shown in L shape. The hot-rolled ribbed steel for SC composite structure of the present application will be described below in combination with Fig. 2.

[0037] As shown in Fig. 2, the outer surface of the hot-rolled ribbed steel for SC composite structure 21 of the present application is provided with a plurality of ribs 22 arranged outwardly. The steel 21 and the ribs 22 are integrally formed by hot-rolling.

[0038] In Fig. 2, the steel 21 is in L shape, including a first steel plate 211 and a second steel plate 212 perpendicular to each other. The outer surfaces of the first steel plate 211 and the second steel plate 212 are provided with ribs 22.

[0039] As shown in Fig. 3, the steel 21 can also be in H shape, including a first flange plate 213 and a second flange plate 214 arranged oppositely and a web plate 215 supporting and connecting the first flange plate 213 and the second flange plate 214. The outer surfaces of the first flange plate 213 and the second flange plate 214 are provided with ribs 22.

[0040] As shown in Fig. 4, the steel 21 can also be in H shape, including a first vertical plate 216 and a second vertical plate 217 arranged oppositely and a horizontal plate 218 supporting and connecting the first vertical plate 216 and the second vertical plate 217. The outer surfaces of the first vertical plate 216 and the second vertical plate 217 are provided with ribs 22.

[0041] As shown in Fig. 5, the steel 21 can also be in cylindrical shape. The ribs 22 are arranged on the outer surface of the cylindrical shape.

[0042] Further, as shown in Figs. 6 and 7, the ribs 22 are arranged in inclined shape.

[0043] The ribs 22 are arranged on the surface of the steel 21 at a certain inclined angle. The ribs 22 are arranged at intervals along the arrangement direction. The inclined angle of the ribs 22 is between 30° and 60°. Preferably, the inclined angle of the ribs 22 is 45°.

[0044] Further, the side surface of the rib 22 is inclined, and an included angle A between the side surface and the surface of the profile steel 21 is in the range of 30° to 60°, preferably 45°. The cross section of the rib 22 is parallelogram. The thickness of the profile steel 21 is 20 mm, the width of the rib 22 is 2 mm, the height is 2 mm, the length is 35 mm or 36 mm, and the interval between the two adjacent ribs 22 is 14 mm.

[0045] Further, as shown in Fig. 8, the ribs 22 are vertically arranged, and are perpendicular to the surface of the profile steel 21.

[0046] Further, as shown in Figs. 9 and 10, the two adjacent rows of ribs 22 are arranged in a shape of a splayed end.

[0047] The cross section of the rib 22 is trapezoidal. The top width of the rib 22 is 2 mm, the bottom width is 4.31 mm, the height is 2 mm, the length is 35 mm or 36 mm, and the interval between the two adjacent ribs 22 is 14 mm.

[0048] The ribs 22 are arranged at intervals. Preferably, the ribs 22 are arranged at intervals along the length direction of the profile steel 21.

[0049] In one embodiment of the present application, as shown in Figs. 11 and 12, the ribs 22 are arranged in a horizontal and vertical staggered manner. The width of the rib 22 is 2 mm, the height is 4 mm, and the interval between the two adjacent ribs 22 is 14 mm.

[0050] The ribs 22 arranged in the horizontal and vertical staggered manner form a plurality of grids on the surface of the profile steel 21. The length of the horizontally arranged rib 22 is adapted to the length of the profile steel 21, and the width of the vertically arranged rib 22 is adapted to the width of the profile steel 21.

[0051] As shown in Figs. 13 and 14, the interval of the ribs 22 arranged in the horizontal and vertical staggered manner can be different, and the interval is selected according to actual needs. In Fig. 13, the width of the rib 22 is 4 mm, the height is 10 mm, and the interval between the two adjacent ribs 22 is 28 mm. In Fig. 14, the width of the rib 22 is 2 mm, the height is 12 mm, and the interval between the two adjacent ribs 22 is 14 mm.

[0052] The cross section of the rib 22 is square, rectangular, parallelogram or trapezoidal.

[0053] The SC combined structure of the present application refers to a steel-concrete combined structure, and a steel structure is arranged in a concrete structure, such as a steel-concrete combined beam, a steel-concrete combined column, a steel-concrete combined plate, etc.

[0054] As shown in Fig. 15, the ribbed steel 21 of the present application is applied to a steel-concrete composite column, the steel 21 is L-shaped, the cross section of the steel-concrete composite column is square, four steels 21 are arranged near the four corners of the square composite column, a plurality of ribs 22 are arranged on the outer surface of the steel 21, two steels 21 connected together through a patch plate 23, and then a column formwork is arranged outside the steel 21 to pour concrete to form a concrete structure 24 wrapping the steel 21 and the patch plate 23, and after the formwork is removed, the steel-concrete composite column is formed. In the steel-concrete composite column, the ribs on the surface of the steel improve the tangential and normal adhesion between the steel and the concrete, can improve the tangential shear resistance and normal anti-falling adhesion of the concrete on the surface of the steel, and also saves the arrangement of the column main reinforcement and the stirrup in the existing steel-concrete composite column.

[0055] The present application also provides a manufacturing method of the hot-rolled ribbed steel for SC composite structure, which comprises the following steps:

[0056] According to the style of the rib, a hot-rolling roller is manufactured;

[0057] When the hot-rolled steel is manufactured, the hot-rolling roller is used for the last hot-continuous rolling of the steel, and then the hot-rolled steel with the required surface rib is obtained.

[0058] When the hot-rolling roller is manufactured, the groove with the shape and size matched with the rib is formed on the surface of the hot-rolling roller.

[0059] The hot-rolled steel is manufactured according to the required shape by using the existing hot-rolling equipment, which can be six-continuous rolling, the manufactured hot-rolling roller is arranged at the last pass of the hot-rolling equipment, the hot-rolling roller is rolled on the surface of the steel where the rib is required to be formed, and then the ribbed steel is obtained by hot-rolling.

[0060] The above embodiments of the present application are described in detail with reference to the accompanying drawings, and those skilled in the art can make various changes to the present application according to the above description. Therefore, some details in the embodiments should not be regarded as limiting the present application, and the scope of protection of the present application is defined by the appended claims.

Claims

1. A hot-rolled ribbed steel sheet for SC composite structure, characterized by comprising: The outer surface of the profile steel is provided with a plurality of outwardly protruding ribs, and the profile steel and the ribs are integrally formed by hot rolling.

2. The hot-rolled ribbed steel bar for SC composite structure according to claim 1, characterized by The profile steel is in L shape, comprising a first steel plate and a second steel plate perpendicular to each other, and the outer surfaces of the first steel plate and the second steel plate are provided with the ribs.

3. The hot-rolled ribbed steel bar for SC composite structure according to claim 1, characterized by The profile steel is in H shape, comprising a first vertical plate and a second vertical plate arranged oppositely, and a horizontal plate supporting and connecting the first vertical plate and the second vertical plate, and the outer surfaces of the first vertical plate and the second vertical plate are provided with the ribs.

4. The hot-rolled ribbed steel bar for SC composite structure according to claim 1, characterized by The profile steel is in cylindrical shape, and the ribs are arranged on the outer surface of the cylindrical shape.

5. The hot-rolled ribbed steel bar for SC composite structure according to claim 1, wherein The profile steel is in H shape, comprising a first vertical plate and a second vertical plate arranged oppositely, and a horizontal plate supporting and connecting the first vertical plate and the second vertical plate, and the outer surfaces of the first vertical plate and the second vertical plate are provided with the ribs.

6. The hot-rolled ribbed steel bar for SC composite structure according to claim 1, wherein The ribs are arranged in an inclined manner.

7. The hot-rolled ribbed steel bar for SC composite structure according to claim 1, wherein The ribs are arranged in a staggered manner along the horizontal and vertical directions.

8. The hot-rolled ribbed steel bar for SC composite structure according to claim 1, wherein The ribs are arranged in a spaced manner.

9. The hot-rolled ribbed steel bar for SC composite structure according to claim 1, wherein The cross section of the ribs is in square, rectangular, parallelogram or trapezoidal shape.

10. A method of manufacturing a hot-rolled ribbed steel bar for an SC composite structure according to claim 1, characterized in that, The method comprises the following steps: According to the pattern of the ribs, a hot rolling roller is made; When the profile steel is hot rolled, the hot rolling roller is used for the last hot continuous rolling of the profile steel, so as to obtain the hot rolled profile steel with the required surface ribs.

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