Hot-rolled bidirectional ribbed steel plate

Abstract

The invention relates to the technical field of steel structure materials, in particular to a hot-rolled bidirectional ribbed steel plate, which is characterized in that transverse ribs arranged in the transverse direction and longitudinal ribs arranged in the longitudinal direction are integrally formed on the surface of the hot-rolled bidirectional ribbed steel plate through hot rolling, the longitudinal ribs are arranged along the width direction of the steel plate; the transverse ribs are perpendicular to the surface of the steel plate; the included angle between each longitudinal rib and the surface of the steel plate is larger than 0 degree and smaller than or equal to 90 degrees. The longitudinal ribs and the transverse ribs can enable the steel plate and a concrete structure connected with the steel plate to form a synergistic stress mechanism, normal lifting and tangential two-way sliding of concrete and the surface of the steel plate can be effectively resisted, and the stress performance is better; and through hot rolling integral forming, the problems that the workload is large, the welding quality is difficult to control, and the fatigue resistance is poor in stud welding can be solved.

Description

Technical Field

[0001] This invention relates to the field of steel structure materials technology, specifically to a hot-rolled bidirectional ribbed steel plate. Background Technology

[0002] Steel-concrete composite structures or connections between steel and concrete components are frequently used in various engineering projects. To ensure the coordinated operation of the steel and concrete components, the conventional method is to weld studs or other connectors onto the surface of the steel component. While this method is simple, it also has several drawbacks, such as a large amount of welding work, difficulty in controlling welding quality, and poor fatigue resistance. Furthermore, to meet the requirements for stud size and protective layer, the thickness of the concrete covering the steel component needs to be significantly increased, resulting in a reduction in the cross-sectional dimensions of the steel component. To ensure sufficient moment of inertia for the steel component, its wall thickness needs to be increased, further leading to a significant increase in the amount of steel used. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a hot-rolled bidirectional ribbed steel plate that solves the problems of large welding workload, difficulty in controlling welding quality, poor fatigue resistance, and large steel consumption associated with welding studs on existing steel plates.

[0004] The technical solution to achieve the above objectives is:

[0005] The present invention provides a hot-rolled bidirectional ribbed steel plate, wherein the surface of the steel plate is integrally formed by hot rolling with transverse ribs arranged in the transverse direction and longitudinal ribs arranged in the longitudinal direction, wherein the transverse ribs are arranged along the length direction of the steel plate and the longitudinal ribs are arranged along the width direction of the steel plate.

[0006] The transverse ribs are arranged perpendicular to the surface of the steel plate;

[0007] The angle between the longitudinal rib and the surface of the steel plate is greater than 0° and less than or equal to 90°.

[0008] A further improvement of the hot-rolled bidirectional ribbed steel plate of the present invention is that the longitudinal ribs are arranged along the width direction of the steel plate.

[0009] A further improvement of the hot-rolled bidirectional ribbed steel plate of the present invention is that the transverse ribs are arranged along the length of the steel plate.

[0010] A further improvement of the hot-rolled bidirectional ribbed steel plate of the present invention is that the spacing of the longitudinal ribs is equal to or unequal to the spacing of the transverse ribs.

[0011] A further improvement of the hot-rolled bidirectional ribbed steel plate of the present invention is that the height of the longitudinal ribs is equal to or different from the height of the transverse ribs.

[0012] The beneficial effects of the hot-rolled bidirectional ribbed steel plate of the present invention are as follows:

[0013] This invention relates to a hot-rolled bidirectional ribbed steel plate, in which longitudinal and transverse ribs are integrally formed on the surface of the steel plate through a hot rolling process. The formed longitudinal and transverse ribs can replace the studs and other connectors welded to the surface of the steel plate in the prior art. The longitudinal and transverse ribs enable the steel plate to form a cooperative force-bearing mechanism with the concrete structure it is in contact with, which can effectively resist the normal lifting and tangential bidirectional slippage between the concrete and the steel plate surface, resulting in better stress performance. The hot rolling integral forming process can also solve the problems of large workload, difficult welding quality control, and poor fatigue resistance associated with stud welding. Attached Figure Description

[0014] Figure 1 This is a top view of the hot-rolled bidirectional ribbed steel plate of the present invention.

[0015] Figure 2 for Figure 1 Sectional view 1-1 in the image.

[0016] Figure 3 for Figure 1 Sectional view 2-2 in the figure.

[0017] Figure 4 for Figure 1 An enlarged schematic diagram of one of the longitudinal ribs.

[0018] Figure 5 This is a flowchart of the method for manufacturing hot-rolled bidirectional ribbed steel plates according to the present invention. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] See Figure 1 This invention provides a hot-rolled bidirectional ribbed steel plate to address the problems associated with existing steel plate surface welded studs and other connectors, such as high welding workload, difficulty in controlling welding quality, and poor fatigue resistance. This invention effectively solves the problems associated with welded studs and other connectors by hot-rolling a certain number of longitudinal and transverse ribs onto the steel surface, replacing studs or other connectors. Furthermore, the hot-rolled bidirectional ribbed steel plate is easy and simple to manufacture. When combined with concrete, the surface ribs of this bidirectional ribbed steel plate form an efficient interlocking mechanism with the concrete, reliably resisting normal separation and bidirectional tangential slip forces from the concrete, resulting in excellent mechanical properties. The hot-rolled bidirectional ribbed steel plate of this invention will be described below with reference to the accompanying drawings.

[0021] See Figure 1 This image shows a top view of the hot-rolled biaxially ribbed steel plate of the present invention. (See also...) Figure 2 , showed Figure 1 Sectional view 1-1 in the diagram. See also... Figure 3 , showed Figure 1 Sectional view 2-2 in the figure. The following is in conjunction with... Figures 1 to 3 The structure of the hot-rolled bidirectional ribbed steel plate of the present invention will be described.

[0022] like Figures 1 to 3 As shown, the surface of the hot-rolled bidirectional ribbed steel plate 21 of the present invention is integrally formed by hot rolling with transverse ribs 212 arranged in the transverse direction and longitudinal ribs 211 arranged in the longitudinal direction. The transverse ribs 212 are arranged along the length direction of the steel plate 21, and the longitudinal ribs 211 are arranged along the width direction of the steel plate 21. The transverse ribs 212 are arranged perpendicular to the surface of the steel plate 21, and the included angle between the longitudinal ribs 211 and the surface of the steel plate 21 is greater than 0° and less than or equal to 90°.

[0023] In one specific embodiment of the present invention, such as Figure 4 As shown, the included angle α between the longitudinal rib 211 and the surface of the steel plate 21 is greater than 0° and less than 90°.

[0024] The longitudinal rib 211 is arranged at an angle, and the included angle α between the longitudinal rib 211 and the surface of the steel plate 21 is an acute angle. The included angle α is preferably between 30° and 60°, and the optimal selection of included angle α is 40°, 45°, 50°, etc.

[0025] In one specific embodiment of the present invention, such as Figures 1 to 3 As shown, the longitudinal rib 211 is arranged along the width direction of the steel plate 21, that is, the two ends of the longitudinal rib 211 are located on both sides of the width direction of the steel plate 21.

[0026] In one specific embodiment of the present invention, such as Figures 1 to 3 As shown, the transverse rib 212 is arranged along the length of the steel plate 21, that is, the two ends of the transverse rib 212 are located on both sides of the length of the steel plate 21.

[0027] In one specific embodiment of the present invention, such as Figure 4 As shown, the thickness of the longitudinal rib 211 on the side closer to the surface of the steel plate 21 is greater than the thickness of the side of the longitudinal rib 211 away from the surface of the steel plate 21.

[0028] In one specific embodiment of the present invention, the thickness of the longitudinal rib 211 gradually decreases from the surface of the steel plate 21 toward the top of the longitudinal rib 211.

[0029] In one specific embodiment of the present invention, the spacing of the longitudinal ribs 211 is equal to or unequal to the spacing of the transverse ribs 212.

[0030] When the spacing of the longitudinal ribs 211 is equal to the spacing of the transverse ribs 212, the longitudinal ribs 211 and the transverse ribs 212 form a grid structure on the surface of the steel plate 21. The grid is square in shape. When the surface of the steel plate 21 comes into contact with concrete, the concrete can fill the internal space of the grid, thereby achieving an effective connection with the surface of the steel plate 21. Furthermore, the bidirectional ribs and the concrete form an efficient interlocking mechanism, which can reliably resist the normal separation and bidirectional tangential sliding forces from the concrete, thus achieving good mechanical properties.

[0031] When the spacing of the longitudinal ribs 211 and the spacing of the transverse ribs 212 are not equal, the longitudinal ribs 211 and the transverse ribs 212 form a grid structure on the surface of the steel plate 21. The grid is rectangular in shape. The area of ​​the grid can be changed by designing the spacing, thereby increasing the contact area between the steel plate and the concrete and improving the connection strength.

[0032] In one specific embodiment of the present invention, the height of the longitudinal rib 211 is equal to or different from the height of the transverse rib 212.

[0033] The height of the longitudinal rib 211 is the distance from the top of the longitudinal rib 211 to the surface of the steel plate 21.

[0034] The dimensions and spacing of the longitudinal ribs 211 and transverse ribs 212 formed on the hot-rolled bidirectional ribbed steel plate of the present invention can be designed according to the actual stress requirements. When the length of the longitudinal ribs 211 is longer, they can be better anchored in the concrete structure, improving the connection strength between the concrete structure and the steel plate. The longitudinal ribs 211 are set in an inclined shape, so that the distance between the top of the longitudinal ribs 211 and the surface of the steel plate 21 is less than the length of the longitudinal ribs 211. Compared with the longitudinal ribs 211 being set perpendicular to the surface of the steel plate 21, the thickness of the concrete covering the steel plate can be effectively reduced, thus solving the problem caused by the thickness of the concrete covering the steel components in the prior art.

[0035] The longitudinal ribs 211 and transverse ribs 212 of the present invention form a grid structure on the steel plate. In this way, the concrete filling grid can make good contact with the surface of the steel plate 21. The concrete can fully wrap the longitudinal ribs 211 and transverse ribs 212, improve the connection strength between the steel plate and the concrete structure, and can effectively resist the normal lifting and tangential bidirectional slippage of the concrete and steel plate surfaces, resulting in stable stress performance.

[0036] The present invention also provides a method for manufacturing hot-rolled biaxial ribbed steel plates, which is described below.

[0037] like Figure 5 As shown, the manufacturing method of the present invention includes the following steps:

[0038] In step S11, a matching hot rolling roll is manufactured according to the design scheme of the longitudinal ribs and the transverse ribs. The hot rolling roll is formed with corresponding grooves according to the design scheme of the longitudinal ribs and the transverse ribs. Then, step S12 is executed.

[0039] In step S12, the steel plate is rolled using the hot rolling rolls to obtain a steel plate with longitudinal and transverse ribs on its surface.

[0040] Furthermore, when rolling the steel plate, the steel plate is first heated to a set temperature, such as 1200℃~1250℃; then, the steel plate billet is rolled in multiple passes using hot rolling rolls to form a steel plate of the required thickness.

[0041] Furthermore, a row of grooves on the hot rolling roll is selected as the initial rolling position, and a mark is set at the selected row of grooves. In this way, the hot rolling roll can be aligned with the first longitudinal rib set at the end of the steel plate, so that the hot rolling roll can perform multiple rolling passes on the steel plate, and longitudinal and transverse ribs are formed on the surface of the steel plate through rolling.

[0042] A first groove is provided on the hot rolling roll at the position corresponding to the formation of longitudinal ribs, extending along both ends of the hot rolling roll. The first groove may be inclined, and its depth determines the size of the longitudinal ribs formed. A second groove is provided on the hot rolling roll at the position corresponding to the formation of transverse ribs, extending circumferentially along the hot rolling roll. The second groove is vertically oriented towards the interior of the hot rolling roll and is an annular groove. The second groove is connected to the first groove.

[0043] The present invention has been described in detail above with reference to the accompanying drawings and embodiments. Those skilled in the art can make various modifications to the present invention based on the above description. Therefore, certain details in the embodiments should not be construed as limiting the present invention, and the scope of protection of the present invention shall be defined by the appended claims.

Claims

1. A hot-rolled bidirectional ribbed steel plate, characterized in that, The surface of the steel plate is integrally formed by hot rolling, with transverse ribs arranged in the transverse direction and longitudinal ribs arranged in the longitudinal direction, wherein the transverse ribs are arranged along the length direction of the steel plate and the longitudinal ribs are arranged along the width direction of the steel plate. The transverse ribs are arranged perpendicular to the surface of the steel plate; The angle between the longitudinal rib and the surface of the steel plate is greater than 0° and less than or equal to 90°.

2. The hot-rolled bidirectional ribbed steel plate as described in claim 1, characterized in that, The longitudinal ribs are arranged along the width direction of the steel plate.

3. The hot-rolled bidirectional ribbed steel plate as described in claim 1, characterized in that, The transverse ribs are arranged along the length of the steel plate.

4. The hot-rolled bidirectional ribbed steel plate as described in claim 1, characterized in that, The spacing between the longitudinal ribs may be equal to or different from the spacing between the transverse ribs.

5. The hot-rolled bidirectional ribbed steel plate as described in claim 1, characterized in that, The height of the longitudinal ribs may be equal to or different from the height of the transverse ribs.

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