A hot-rolled h-shaped steel structure

Abstract

This utility model belongs to the field of hot-rolled H-beam steel structure in the field of steel profile production technology. The hot-rolled H-beam steel structure (7) includes flanges and web (1), with protruding ribs (2) provided on the flanges and / or web (1), and rounded corners (3) provided at the joint between the flanges and the ribs (2), and the joint between the web (1) and the ribs (2) is also provided with a rounded corner (3) structure. The flanges include an upper flange (4) and a lower flange (5), with ribs (2) provided on the upper surface of the upper flange (4), ribs (2) provided on the lower surface of the lower flange (5), ribs (2) provided on one side of the web (1), and ribs (2) provided on the other side of the web (1). The hot-rolled H-beam steel structure of this utility model has a simple structure and can effectively achieve a tight fit between the hot-rolled H-beam and the concrete part when used, while eliminating the traditional process of using welding bolts to improve the shear resistance of the structure, ensuring stable assembly, and can be promoted and used in buildings and other large structures.

Description

Technical Field

[0001] This utility model belongs to the field of profile steel production technology, and more specifically, it relates to a hot-rolled H-beam steel structure. Background Technology

[0002] H-beam columns are commonly used and important structural components in building construction. Currently, hot-rolled H-beam columns typically employ a concrete-clad structure, meaning the hot-rolled H-beam is encased in concrete. To better balance the strength of the H-beam and the hardening properties of the concrete, studs are usually welded to the outer surfaces of the H-beam, such as the flanges and web, to enhance the shear resistance of the composite member and thus improve its overall compressive and bending performance. However, hot-rolled H-beams are constrained by the structure of the rolling mill, resulting in flat, straight flanges and webs. This is the primary structural reason for the subsequent use of welded studs. Currently, using welded studs is the main processing method for improving H-beam concrete structures. While welded studs significantly strengthen the connection between the steel column and the concrete, improving overall load-bearing capacity, they also have some drawbacks. First, the quality of the welded studs is difficult to guarantee, as it is affected by various factors such as welding current, welding speed, and welding materials. Improper welding parameters can easily affect the safety and stability of the structure. Secondly, the construction speed of welded studs is relatively slow. For large structural components, the welding time is long and the efficiency is low. In addition, welded studs are expensive, require special welding equipment, and have high requirements for welding materials. Welded studs are also subject to high requirements for the welding environment, such as humidity and temperature. Welding quality is difficult to guarantee in harsh environments. Therefore, as a bolted connection method for hot-rolled H-beams, structural safety and economy are the main factors restricting the development of the application of bolted welding of hot-rolled H-beams. Patent publication number CN 113502959 A, entitled "A construction method for a steel section encasing a concrete structure embedded in a curtain wall column", provides a construction method for a steel section encasing a concrete structure embedded in a curtain wall column. This method involves first preparing a steel section encasing a concrete column, assembling and placing the H-beams, formwork, main curtain wall columns, and symmetrical main columns on a grouting frame, and then inserting a structural beam between the two column nodes and fastening it with bolts. The main structural side columns and curtain wall columns are combined, featuring flexible construction, high material utilization, high load-bearing capacity, good deformation coordination, high connection reliability, and convenient construction. It rationally utilizes the mechanical properties of both structural and non-structural components. This method employs traditional bolted connections and is a double-column structural wall, resulting in complex assembly. Patent publication number CN 219632208U, entitled "A Precision Roll for a Variable Cross-Section Hot-Rolled U-Shaped Reinforced Rib Special-Shaped Steel Finishing Machine Frame," describes a precision roll for a variable cross-section hot-rolled U-shaped reinforced rib special-shaped steel finishing machine frame. This roll has an upper roll and a lower roll arranged parallel to each other. One or more sets of annular protrusions are provided along the length direction on the side wall of the upper roll. One or more sets of annular grooves are formed along the length direction on the side wall of the lower roll. The annular protrusions are embedded in the annular grooves to form a U-shaped reinforcing rib cross-section.This precision roll for a hot-rolled U-shaped reinforced steel profile mill, designed to improve the red hardness of the roll during operation, is based on the characteristics and technical requirements of the casting. This design minimizes the risk of oxidation-induced hot cracking during prolonged contact between the roll's sidewalls, groove bottom, and the high-temperature rolled workpiece, especially in deep-hole conditions. Furthermore, it increases the density of the roll's microcrystalline structure, ensuring consistent rolling output and quality across the early and late stages of the rolling process, thus extending the roll's service life. This method only provides a rolling mill device for U-shaped steel profiles and does not relate to specific steel products. This technology does not address the technical issues or solutions described in this application. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a hot-rolled H-beam structure that is simple in structure, can effectively achieve a tight fit between hot-rolled H-beams and concrete, eliminates the traditional process of using welding bolts to improve the shear resistance of the structure, ensures stable assembly, and can be widely used in buildings and other large structures.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] This utility model is a hot-rolled H-beam steel structure, which includes flanges and webs. Protruding ribs are provided on the flanges and / or webs. Rounded corners are provided at the joints of the flanges and ribs, and rounded corner structures are provided at the joints of the webs and ribs.

[0006] The flange includes an upper flange and a lower flange. The upper flange has a raised rib on its upper surface, the lower flange has a raised rib on its lower surface, the web has a raised rib on one side, and the web has a raised rib on the other side.

[0007] The distance between the ribs on the upper surface of the upper flange and the ribs on the lower surface of the lower flange is the maximum rib height H; the distance between the ribs on the upper surface of the upper flange and the ribs on the lower surface of the lower flange is the H-beam height h; the distance between the ribs on one side of the web and the ribs on the other side of the web is the maximum rib width b; and the distance from one end of the flange to the other end is the H-beam width B.

[0008] The fillet between the flange and the rib on the flange is r1, the fillet between the web and the rib on the web is r2, and the fillet between the flange and the web is r3.

[0009] The dimensions of the hot-rolled H-beam structure are set as follows: 2b≤B, 3H-h≤h.

[0010] The hot-rolled H-beam steel structure is externally encased in concrete.

[0011] Multiple ribs are provided at intervals on the flange and / or web.

[0012] The hot-rolled H-beam structure has the following specifications: H-beam height h: 300mm≤h≤1200mm, maximum rib height H: 350mm≤H≤1500mm, H-beam width B: 300mm≤B≤1200mm, and maximum rib width b: 350mm≤b≤1200mm.

[0013] The thickness of the H-beam flange t2 of the hot-rolled H-beam structure is 25mm≤t2≤150mm, the thickness of the H-beam flange rib t1' is 25mm≤t1'≤150mm, the thickness of the H-beam web t1 is 20mm≤t1≤120mm, and the thickness of the H-beam web rib t2' is 20mm≤t2'≤120mm.

[0014] The flanges, webs, and ribs of the hot-rolled H-beam structure are an integral structure.

[0015] The working principle and beneficial effects of this utility model are as follows:

[0016] The hot-rolled H-beam structure described in this utility model is an integral structure, wherein protruding ribs (short ribs) are provided on the flanges and / or web surfaces. Taking a symmetrical hot-rolled H-beam structure foundation as an example, the protruding ribs of the hot-rolled H-beam structure are located on the symmetrical cross-section of the hot-rolled H-beam, and their height, width, and thickness dimensions are as follows: maximum rib height H, H-beam height h, H-beam width B, maximum rib width b, H-beam flange thickness t2, H-beam web thickness t1, H-beam flange rib thickness t1', and H-beam web rib thickness t2'. Furthermore, the fillet between the H-beam flange and the flange rib is r1, the fillet between the web and the web rib is r3, and the fillet between the H-beam flange and the web is r3; the fillet dimensions are not limited. Furthermore, considering the actual requirements for the rolls and ensuring the cross-sectional stiffness of the rolls, the following requirements are also made for the height and width of the H-beam structure 7: 2b≤B, 3(Hh)≤h. This hot-rolled H-beam serves as the main structural strength, with an external concrete filling section 6, forming a clad hot-rolled H-beam steel structure column component. This integral structure solves the problem of using welding bolts in the assembly of hot-rolled H-beam columns. The overall structure is stable and can be combined with concrete structures to form steel structure columns, eliminating the traditional welding bolt process. Moreover, its simple structure and stable assembly meet the requirements of current large-scale building columns and other load-bearing structures both domestically and internationally, exhibiting excellent bending and shear resistance and load-bearing performance, and has broad market application prospects. Attached Figure Description

[0017] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:

[0018] Figure 1 This is a schematic diagram of the hot-rolled H-beam structure described in this utility model;

[0019] Figure 2 This is a schematic diagram of the hot-rolled H-beam structure described in this utility model;

[0020] Figure 3 This is a schematic diagram of the hot-rolled H-beam structure described in this utility model;

[0021] Figure 4a This is a schematic diagram of the hot-rolled H-beam structure described in this utility model;

[0022] Figure 4b This is a schematic diagram of the hot-rolled H-beam structure described in this utility model;

[0023] Figure 4c This is a schematic diagram of the hot-rolled H-beam structure described in this utility model;

[0024] Figure 4d This is a schematic diagram of the hot-rolled H-beam structure described in this utility model;

[0025] Figure 4e This is a schematic diagram of the hot-rolled H-beam structure described in this utility model;

[0026] Figure 5 This is a schematic diagram of the hot-rolled H-beam structure described in this utility model;

[0027] Figure 6 This is a schematic diagram of the hot-rolled H-beam structure described in this utility model;

[0028] Figure 7 This is a schematic diagram of the hot-rolled H-beam structure described in this utility model;

[0029] Figure 8 This is a schematic diagram of the hot-rolled H-beam structure described in this utility model;

[0030] Figure 9 This is a schematic diagram of an embodiment of the hot-rolled H-beam structure described in this utility model;

[0031] The labels in the attached diagram are as follows: 1. Web; 2. Rib; 3. Rounded corner; 4. Upper flange; 5. Lower flange; 6. Concrete section. Detailed Implementation

[0032] The following description, with reference to the accompanying drawings, provides a more detailed explanation of the specific embodiments of this utility model, including the shape and structure of each component, the relative positions and connections between the parts, the functions and working principles of each part:

[0033] As attached Figure 1 - Appendix Figure 9As shown, this utility model is a hot-rolled H-beam steel structure. The hot-rolled H-beam steel structure 7 includes flanges and a web 1. Protruding ribs 2 are provided on the flanges and / or the web 1. A rounded corner 3 is provided at the junction of the flanges and the ribs 2. The flanges include an upper flange 4 and a lower flange 5. A rib 2 is provided on the upper surface of the upper flange 4 and the lower surface of the lower flange 5. A rib 2 is provided on one side of the web 1 and on the other side. The above structure addresses the shortcomings of the prior art by proposing an improved technical solution. In the structural configuration, the hot-rolled H-beam steel structure is an integral structure, wherein protruding ribs (short ribs) are simultaneously provided on the flanges and the web surface, or protruding ribs are provided on the flanges, or protruding ribs are provided on the web surface. The choice is made according to the needs. See details. Figure 1 and Figure 2 As shown. Taking a symmetrical hot-rolled H-beam steel structure foundation as an example, the protruding ribs of the hot-rolled H-beam steel structure are located on the symmetrical section of the hot-rolled H-beam steel. Their height, width, and thickness dimensions are as follows: maximum rib height H, H-beam steel height h, H-beam steel width B, maximum rib width b, H-beam steel flange thickness t2, H-beam steel web thickness t1, H-beam steel flange rib thickness t1', and H-beam steel web rib thickness t2'. Furthermore, the fillet radius between the H-beam steel flange and the flange rib is r1, the fillet radius between the web and the web rib is r3, and the fillet radius between the H-beam steel flange and the web is r3. There are no size restrictions on the fillet radius. In addition, considering the actual roll cutting requirements and ensuring the cross-sectional stiffness of the rolls, the following requirements are also made for the height and width of the H-beam steel structure 7: 2b≤B, 3(Hh)≤h. This hot-rolled H-beam serves as the main structural strength, with an external concrete filling section 6, forming a wrapped hot-rolled H-beam steel structure column component. The steel structure adopts an integral structure, which can solve the problem of using welding bolts in the assembly of hot-rolled H-beam columns. The overall structure is stable and can be combined with concrete structures to form steel structure columns, eliminating the need for traditional welding bolt processes. Moreover, its simple structure and stable assembly meet the requirements of current large-scale building columns and other load-bearing structures both domestically and internationally. It has good bending and shear resistance as well as load-bearing performance and has broad market application prospects.

[0034] The distance between the rib 2 on the upper surface of the upper flange 4 and the rib 2 on the lower surface of the lower flange 5 is the maximum rib height H; the distance between the rib 2 on the upper surface of the upper flange 4 and the rib 2 on the lower surface of the lower flange 5 is the H-beam height h; the distance between the rib 2 on one side of the web 1 and the rib 2 on the other side of the web 1 is the maximum rib width b; and the distance from one end of the flange to the other end is the H-beam width B. The fillet 3 between the flange and the rib 2 on the flange is r1; the fillet 3 between the web 1 and the rib 2 on the web 1 is r2; and the fillet 3 between the flange and the web 1 is r3. The dimensions of the hot-rolled H-beam structure are set as follows: 2b≤B, 3H-h≤h.

[0035] The hot-rolled H-beam structure 7 is externally encased in a concrete section 6. In this structure, the hot-rolled H-beam serves as the main structural strength, while the external concrete section 6 forms a clad hot-rolled H-beam steel structural column component, eliminating the need for the welded stud structure found in existing technologies. This effectively avoids the problems inherent in existing structures, such as susceptibility to welding current, welding speed, and welding materials. Improper welding parameter settings can easily affect the safety and stability of the structure, and for large structural components, the long welding time and low efficiency are also avoided.

[0036] Multiple protruding ribs 2 are provided on the flange and / or web 1 at intervals.

[0037] The hot-rolled H-beam structure 7 has the following specifications: H-beam height h: 300mm ≤ h ≤ 1200mm; maximum rib height H: 350mm ≤ H ≤ 1500mm; H-beam width B: 300mm ≤ B ≤ 1200mm; maximum rib width b: 350mm ≤ b ≤ 1200mm. The hot-rolled H-beam structure 7 also has the following specifications: H-beam flange thickness t2: 25mm ≤ t2 ≤ 150mm; H-beam flange rib thickness t1': 25mm ≤ t1' ≤ 150mm; H-beam web thickness t1: 20mm ≤ t1 ≤ 120mm; H-beam web rib thickness t2': 20mm ≤ t2' ≤ 120mm.

[0038] The flanges, web 1, and ribs 2 of the hot-rolled H-beam structure 7 are integral structures. The hot-rolled H-beam structure 7 is an integrally formed structure. The main production steps of the hot-rolled H-beam production method are: molten iron pretreatment (optional step) → converter smelting or circuit smelting → argon blowing refining (optional step) → ladle refining (optional step) → vacuum refining (optional step) → continuous casting of rectangular, round, or shaped billets → billet heating → billet rolling → universal rolling → controlled cooling. The production of hot-rolled H-beams requires the use of a universal rolling mill (2 horizontal rolls and 2 vertical rolls). A double-roll edge mill can be used for dimensional adjustment in the middle, as shown in Figure 4. The production method of the hot-rolled H-beams of this utility model can use rectangular, round, or shaped billets for continuous casting. Taking shaped billets as an example, see... Figure 5 As shown, pre-shaped sections facilitate the production of finished hot-rolled H-beams. In the billet section, two rolls can be used for billet rolling. Pre-rolled ribs can be rolled on the web to obtain approximate dimensions. Then, universal rolls are used for pre-rolling the flange ribs. The main dimensions, thickness, and flange angle can be controlled by the universal horizontal rolls and edge rolls, ultimately achieving precise dimensional control. See details... Figure 6 As shown. Considering the needs of practical engineering, different flange rib or web rib structures can be used for rolling. For example, using an intermittent flange rib design, a set of rolls with bosses needs to be added after the universal finishing mill for the flange rib design. See details below. Figure 8 and Figure 9 As shown, other forms, such as web ribs, are designed using the same or similar principles. The short ribs in this hot-rolled H-beam structure can have different protruding forms, depending on the actual engineering design and specific requirements.

[0039] Considering the current column structures in the construction field, H-beams with a cross-section of H300×300 are commonly used for support (some use the European standard 330×330 cross-section). Therefore, the minimum web height of the ribbed hot-rolled H-beam is limited to 300mm, and the minimum rib height is 350mm. Furthermore, considering that the maximum cross-sectional height of the commonly used extra-large cylindrical or square column support H-beams is 1500mm, and combining this with the actual production of ribs, the maximum web height of the ribbed hot-rolled H-beam is limited to 1200mm, and the maximum rib height is 1500mm. That is, H-beam web height 300mm≤h≤1200mm, rib height 350mm≤H≤1500mm, H-beam width 300mm≤B≤1200mm, and rib width 350mm≤b≤1200mm.

[0040] Furthermore, based on the currently commonly used H-beam column cross-section design, the minimum web thickness of the H-beam is not less than 20mm, and the maximum usable flange thickness of the H-beam is 150mm. Combining the actual connection design of the ribs with the web and flanges, the principle of equal thickness of the ribs and connecting parts is maintained. The flange thickness of the ribs of the rib H-beam is consistent with the flange thickness, and the web rib thickness is consistent with the web thickness. That is, the flange thickness of the H-beam is 25mm≤t2≤150mm, the flange rib thickness of the H-beam is 25mm≤t1'≤150mm, the web thickness of the H-beam is 20mm≤t1≤120mm, and the web rib thickness of the H-beam is 20mm≤t2'≤120mm.

[0041] This utility model can be used for billet rolling of different types of billets, such as rectangular billets, round billets, and irregularly shaped billets, as shown in the attached figure. Figure 4a - Appendix Figure 4e As shown in the figure (taking an irregularly shaped billet as an example), it demonstrates the process from billet shape ( Figure 4a The process of forming the product after billet preparation (4b), universal rough rolling (4c, 4d), and universal finish rolling (4e) is illustrated in the attached figure. Figure 9 As shown.

[0042] The hot-rolled H-beam structure described in this utility model is an integral structure, wherein protruding ribs (short ribs) are provided on the flanges and / or webs. Taking a symmetrical hot-rolled H-beam structure foundation as an example, the protruding ribs of the hot-rolled H-beam structure are located on the symmetrical cross-section of the hot-rolled H-beam, and their height, width, and thickness dimensions are as follows: maximum rib height H, H-beam height h, H-beam width B, maximum rib width b, H-beam flange thickness t2, H-beam web thickness t1, H-beam flange rib thickness t1', and H-beam web rib thickness t2'. Furthermore, the fillet between the H-beam flange and the flange rib is r1, the fillet between the web and the web rib is r3, and the fillet between the H-beam flange and the web is r3; the fillet dimensions are not limited. Furthermore, considering the actual requirements for the rolls and ensuring the cross-sectional stiffness of the rolls, the following requirements are also made for the height and width of the H-beam structure 7: 2b≤B, 3(Hh)≤h. This hot-rolled H-beam serves as the main structural strength, with an external concrete filling section 6, forming a clad hot-rolled H-beam steel structure column component. This integral structure solves the problem of using welding bolts in the assembly of hot-rolled H-beam columns. The overall structure is stable and can be combined with concrete structures to form steel structure columns, eliminating the traditional welding bolt process. Moreover, its simple structure and stable assembly meet the requirements of current large-scale building columns and other load-bearing structures both domestically and internationally, exhibiting excellent bending and shear resistance and load-bearing performance, and has broad market application prospects.

[0043] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A hot-rolled H-steel structure, characterized by: The hot-rolled H-beam structure (7) includes a flange and a web (1), with protruding ribs (2) provided on the flange and / or web (1), and rounded corners (3) provided at the joint between the flange and the ribs (2), and rounded corners (3) provided at the joint between the web (1) and the ribs (2); The flange includes an upper flange (4) and a lower flange (5). A rib (2) is provided on the upper surface of the upper flange (4) and a rib (2) is provided on the lower surface of the lower flange (5). A rib (2) is provided on one side of the web (1) and a rib (2) is provided on the other side of the web (1). The distance between the rib (2) on the upper surface of the upper flange (4) and the rib (2) on the lower surface of the lower flange (5) is the maximum rib height H, the distance between the rib (2) on the upper surface of the upper flange (4) and the rib (2) on the lower surface of the lower flange (5) is the H-beam height h, the distance between the rib (2) on one side of the web (1) and the rib (2) on the other side of the web (1) is the maximum rib width b, and the distance from one end of the flange to the other end is the H-beam width B. The dimensions of the hot-rolled H-beam structure are set as follows: 2b≤B, 3(Hh)≤h.

2. The hot-rolled H-steel structure according to claim 1, characterized in that: The fillet (3) between the flange and the rib (2) on the flange is r1, the fillet (2) between the web (1) and the rib (2) on the web (1) is r2, and the fillet (3) between the flange and the web (1) is r3.

3. The hot-rolled H-beam structure according to claim 1 or 2, characterized in that: The hot-rolled H-beam steel structure (7) is externally wrapped with concrete (6).

4. The hot-rolled H-steel structure of claim 1, wherein: Multiple protruding ribs (2) are respectively provided on the flange and web (1) with gaps.

5. The hot-rolled H-steel structure according to claim 1, characterized in that: The hot-rolled H-beam structure (7) has the following characteristics: H-beam height h: 300mm≤h≤1200mm, maximum rib height H: 350mm≤H≤1500mm, H-beam width B: 300mm≤B≤1200mm, and maximum rib width b: 350mm≤b≤1200mm.

6. The hot-rolled H-steel structure of claim 1, wherein: The thickness of the H-beam flange t2 of the hot-rolled H-beam structure (7) is 25mm≤t2≤150mm, the thickness of the H-beam flange rib t1' is 25mm≤t1'≤150mm, the thickness of the H-beam web t1 is 20mm≤t1≤120mm, and the thickness of the H-beam web rib t2' is 20mm≤t2'≤120mm.

7. The hot-rolled H-steel structure according to claim 1, characterized in that: The flange, web (1), and rib (2) of the hot-rolled H-beam structure (7) are an integral structure.

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