Space type steel folding beam and slope roof steel structure

Abstract

The utility model relates to the technical field of steel structural members, in particular to a spatial steel folding beam and a slope roof steel structure. A space type steel folding beam comprises a first beam section, a second beam section, a third beam section and a fourth beam section, the section of the second beam section is I-shaped, an included angle exists between the axis of the second beam section and the axis of the first beam section, and an included angle exists between the plane where the web of the second beam section is located and the plane where the web of the first beam section is located; the transition section comprises a transition web and a transition wing plate, and the two ends of the transition section are connected with the first beam section and the second beam section respectively. According to the invention, the problems that in the prior art, under the condition that rod pieces of a space steel structure are twisted and bent, firstly, round steel pipes are used as primary and secondary beams of the space steel structure, but every two adjacent round steel pipes need to be connected in an intersecting welding mode, so that the construction difficulty is large; and secondly, pipe trusses are adopted as primary and secondary beams of a space steel structure, but the space steel structure is not suitable for a narrow space.

Description

Technical Field

[0001] This utility model relates to the technical field of steel structure components, and in particular to a spatial steel folded beam and a sloping roof steel structure. Background Technology

[0002] Spatial steel structures are highly efficient load-bearing systems characterized by three-dimensional spatial geometry. Through the ingenious combination of members, nodes, and curved surfaces, they form diverse forms such as space frames, space shells, suspension cables, tensioned cables, or cable domes. These structures utilize the high strength and ductility of steel to evenly transfer loads to support points through spatial synergy, combining the ability to span large distances with lightweight advantages. They also demonstrate a fusion of mechanical logic and architectural aesthetics, and are widely used in the roofing and spatial enclosure systems of iconic buildings such as stadiums, airport terminals, and exhibition centers. Their modular design and prefabricated construction better meet the modern engineering pursuit of efficiency and environmental protection.

[0003] When a building needs to achieve a column-free, large open space or to express a complex shape, a spatial steel structure is often used as the roof. In this case, the members of the spatial steel structure are subject to twisting and bending. Currently, circular steel tubes or tubular trusses are commonly used as the primary and secondary beams of spatial steel structures. However, if circular steel tubes are used as the primary and secondary beams, adjacent circular steel tubes need to be connected by intersecting welds; if tubular trusses are used as the primary and secondary beams, they are not well-suited for roofs with relatively narrow spaces. Utility Model Content

[0004] The purpose of this utility model is to overcome the limitations of existing technologies in spatial steel structures where members are twisted or bent. One approach is to use circular steel pipes as the main and secondary beams of the spatial steel structure, but this requires connecting adjacent circular steel pipes by intersecting welding, which makes construction difficult. Another approach is to use tubular trusses as the main and secondary beams of the spatial steel structure, but this is not suitable for narrow spaces. This invention provides a spatial steel truss beam and a sloping roof steel structure.

[0005] In a first aspect, the present invention provides a spatial steel folding beam, comprising:

[0006] The first beam segment has an I-shaped cross-section;

[0007] The second beam segment has an I-shaped cross-section. The axis of the second beam segment and the axis of the first beam segment are at an angle. The plane containing the web of the second beam segment and the plane containing the web of the first beam segment are at an angle.

[0008] The transition section includes a transition web and a transition flange. The two ends of the transition web are respectively connected to the web of the first beam segment and the web of the second beam segment, and the two sides of the transition flange are respectively connected to the flanges of the first beam segment and the flanges of the second beam segment.

[0009] The angle between the axis of the first beam segment and the axis of the second beam segment is determined according to the actual situation; the angle between the plane containing the web of the first beam segment and the plane containing the web of the second beam segment is determined according to the actual situation.

[0010] The first and second beam segments are designed with an I-shaped cross-section to ensure the load-bearing capacity of the folded beam as much as possible. The length directions of the first and second beam segments form an angle, as do the planes containing the webs at both ends of the first and second beam segments. Compared to existing tubular truss structures, this design occupies less space and is suitable for the member configuration of spatial steel structures. The first and second beam segments are connected by a transition section, which includes a transition web and transition flanges. This avoids using pipe-like members and the need for intersecting welds, simplifying construction compared to existing methods that use circular steel pipes as primary and secondary beams in spatial steel structures.

[0011] Preferably, the transition section is further provided with at least two stiffening plates, wherein the two stiffening plates are respectively disposed between the first beam section and the transition section and between the second beam section and the transition section.

[0012] Because stress concentration is prone to occur at the connection between the first beam segment and the transition segment, as well as at the connection between the second beam segment and the transition segment, stiffening plates are installed at these locations to reduce the stress concentration in the transition segment, thereby improving the load-bearing capacity and safety of the structure.

[0013] Preferably, the transition section includes a first stiffening plate and a second stiffening plate, the planes containing the first stiffening plate and the second stiffening plate are at an angle, and the axis of the first stiffening plate and the axis of the second stiffening plate are at an angle.

[0014] Because there is an angle between the axes of the first beam segment and the second beam segment, and an angle between the plane containing the web of the first beam segment and the plane containing the web of the second beam segment, there is an angle between the plane containing the first stiffening plate and the second stiffening plate, and an angle between the axis of the first stiffening plate and the axis of the second stiffening plate.

[0015] Preferably, the stiffening plate is connected to the side of the transition wing plate facing the transition web plate.

[0016] Preferably, the transition wing includes a first transition wing and a second transition wing, and the plane containing the first transition wing and the plane containing the second transition wing have an angle between them.

[0017] Preferably, the transition web is a curved panel structure.

[0018] The transition web is a curved panel structure to minimize stress concentration.

[0019] Preferably, the end of the first beam segment away from the second beam segment is connected to a third beam segment, the axis of the third beam segment is parallel to the axis of the second beam segment, and the plane of the web of the third beam segment is parallel to the plane of the web of the first beam segment.

[0020] In the second aspect, a sloping roof steel structure includes a spatial steel folding beam as described above.

[0021] A type of sloping roof steel structure, comprising a spatial steel folding beam as described above, can reduce the space occupied while ensuring load-bearing capacity as much as possible, thus adapting to narrow spaces and reducing construction difficulty.

[0022] Preferably, it further includes a main steel frame beam, with both the first beam segment and the second beam segment bolted to the main steel frame beam.

[0023] Preferably, the second beam segment is connected to the side of the corresponding main steel frame beam, the main steel frame beam has an I-shaped cross-section, and the width direction of the second beam segment is parallel to the width direction of the main steel frame beam.

[0024] The width direction of the second beam segment and the main steel frame beam are both along the height direction of the I-beams. The width direction of the second beam segment is parallel to the width direction of the main steel frame beam to ensure the load-bearing capacity of the structure as much as possible.

[0025] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0026] 1. This utility model provides a spatial steel folded beam, comprising a first beam segment and a second beam segment, connected by a transition section. The cross-sections of the first beam segment, the second beam segment, and the transition section are all I-shaped to ensure the load-bearing capacity of the folded beam as much as possible. The length directions of the first and second beam segments form an angle, as do the planes containing the webs of the first and second beam segments. Compared to existing tubular truss structures, this design occupies less space and is suitable for the member configuration of spatial steel structures. The first and second beam segments are connected by a transition section, which includes a transition web and transition flanges, avoiding the use of pipe-like members and thus preventing intersecting welds. Compared to existing methods using circular steel pipes as primary and secondary beams in spatial steel structures, this design facilitates construction. This application overcomes the limitations of existing technologies in spatial steel structures where members are twisted or bent. One limitation is the use of circular steel pipes as the main and secondary beams of the spatial steel structure, which requires intersecting welding to connect adjacent circular steel pipes, making construction difficult. Another limitation is the use of tubular trusses as the main and secondary beams of the spatial steel structure, which is unsuitable for narrow spaces.

[0027] 2. This utility model provides a sloping roof steel structure, including the above-mentioned spatial steel folding beam, which can reduce the space occupied while ensuring the load-bearing capacity as much as possible, thereby adapting to narrow spaces and reducing the difficulty of construction. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a spatial steel folding beam according to the present invention;

[0029] Figure 2 This is a schematic diagram of the transition section of this utility model;

[0030] Figure 3 This is a schematic diagram of a sloping roof steel structure according to this utility model;

[0031] Figure 4 This is a schematic diagram showing the calculation results of the vertical deflection value of a steel structure with a sloping roof under dead load and live load conditions.

[0032] Figure 5 This is a schematic diagram showing the calculation results of the horizontal displacement of a sloping roof steel structure under dead load and live load conditions.

[0033] Figure 6 This is a schematic diagram showing the calculation results of the vertical deflection value of a steel structure with a sloping roof under wind load conditions.

[0034] Figure 7 This is a schematic diagram showing the calculation results of the horizontal displacement of a sloping roof steel structure under wind load conditions.

[0035] icon:

[0036] 1-First beam segment, 2-Second beam segment, 3-Transition segment, 301-First stiffening plate, 302-Second stiffening plate, 303-First transition flange, 304-Second transition flange, 305-Transition web, 4-Third beam segment, 5-Main steel frame beam. Detailed Implementation

[0037] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0038] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0039] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0040] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0041] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0042] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0043] Example 1

[0044] like Figures 1 to 2 As shown, a spatial steel folding beam includes:

[0045] The first beam segment 1 has an I-shaped cross-section;

[0046] The second beam segment 2 has an I-shaped cross-section. The axis of the second beam segment 2 and the axis of the first beam segment 1 are at an angle. The plane containing the web of the second beam segment 2 and the plane containing the web of the first beam segment 1 are at an angle.

[0047] The transition section 3 includes a transition web 305 and a transition flange. The two ends of the transition web 305 are respectively connected to the web of the first beam segment 1 and the web of the second beam segment 2. The two sides of the transition flange are respectively connected to the flanges of the first beam segment 1 and the flanges of the second beam segment 2.

[0048] The angle between the axis of the first beam segment 1 and the axis of the second beam segment 2 is determined according to the actual situation; the angle between the plane containing the web of the first beam segment 1 and the plane containing the web of the second beam segment 2 is determined according to the actual situation.

[0049] The first beam segment 1 and the second beam segment 2 are designed with an I-shaped cross-section to ensure the load-bearing capacity of the folded beam as much as possible. The length directions of the first beam segment 1 and the second beam segment 2 form an angle, and the planes containing the webs at both ends of the first beam segment 1 and the second beam segment 2 also form an angle. Compared to existing tubular truss structures, this design occupies less space and is suitable for the member type of spatial steel structures. The first beam segment 1 and the second beam segment 2 are connected by a transition section 3, which includes a transition web 305 and a transition flange. Instead of using pipe-like members, this avoids the need for intersecting welds and facilitates construction compared to existing methods that use circular steel pipes as the primary and secondary beams of spatial steel structures.

[0050] Furthermore, the transition section 3 is also provided with at least two stiffening plates, wherein the two stiffening plates are respectively disposed between the first beam section 1 and the transition section 3 and between the second beam section 2 and the transition section 3.

[0051] Because stress concentration is prone to occur at the connection between the first beam segment 1 and the transition segment 3, as well as at the connection between the second beam segment 2 and the transition segment 3, stiffening plates are installed at these locations to reduce the stress concentration in the transition segment 3, thereby improving the load-bearing capacity and safety of the structure.

[0052] Furthermore, the transition section 3 includes a first stiffening plate 301 and a second stiffening plate 302. The planes containing the first stiffening plate 301 and the second stiffening plate 302 are at an angle, and the axis of the first stiffening plate 301 and the axis of the second stiffening plate 302 are at an angle.

[0053] Because there is an angle between the axes of the first beam segment 1 and the second beam segment 2, and an angle between the plane containing the web of the first beam segment 1 and the plane containing the web of the second beam segment 2, there is an angle between the plane containing the first stiffening plate 301 and the second stiffening plate 302, and an angle between the axis of the first stiffening plate 301 and the axis of the second stiffening plate 302.

[0054] Furthermore, the stiffening plate is connected to the side of the transition wing plate facing the transition web 305.

[0055] Furthermore, the transition wing includes a first transition wing 303 and a second transition wing 304, and the plane in which the first transition wing 303 is located and the plane in which the second transition wing 304 is located have an angle.

[0056] Furthermore, the transition web 305 is a curved panel structure to minimize stress concentration.

[0057] Furthermore, the end of the first beam segment 1 away from the second beam segment 2 is connected to a third beam segment 4, the axis of the third beam segment 4 is parallel to the axis of the second beam segment 2, and the plane of the web of the third beam segment 4 is parallel to the plane of the web of the first beam segment 1.

[0058] Example 2

[0059] like Figure 3 As shown, a sloping roof steel structure includes a spatial steel folding beam as described in Example 1.

[0060] It also includes a main steel frame beam 5, with the first beam segment 1 and the second beam segment 2 both bolted to the main steel frame beam 5.

[0061] The second beam segment 2 is connected to the side of the corresponding main steel frame beam 5. The main steel frame beam 5 has an I-shaped cross-section, and the width direction of the second beam segment 2 is parallel to the width direction of the main steel frame beam 5.

[0062] In the Midas software, the vertical deflection and horizontal displacement values ​​of this structure were calculated under dead load, live load, and wind load conditions, respectively. The results showed that the vertical relative deflection of the first beam segment 1 of the spatial steel folded beam in Example 1 was 1 mm, which meets the specification requirements; the second beam segment 2 reached 5 mm, which also meets the specification requirements.

[0063] The above content is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spatial steel folding beam, characterized in that, include: The first beam segment (1) has an I-shaped cross section; The second beam segment (2) has an I-shaped cross section. The axis of the second beam segment (2) and the axis of the first beam segment (1) are at an angle. The plane where the web of the second beam segment (2) is located is at an angle to the plane where the web of the first beam segment (1) is located. The transition section (3) includes a transition web (305) and a transition wing plate. The two ends of the transition web (305) are respectively connected to the web of the first beam segment (1) and the web of the second beam segment (2). The two sides of the transition wing plate are respectively connected to the wing plate of the first beam segment (1) and the wing plate of the second beam segment (2).

2. The spatial steel folding beam according to claim 1, characterized in that, The transition section (3) is also provided with at least two stiffening plates, wherein the two stiffening plates are respectively provided between the first beam section (1) and the transition section (3) and between the second beam section (2) and the transition section (3).

3. A spatial steel folding beam according to claim 2, characterized in that, The transition section (3) includes a first stiffening plate (301) and a second stiffening plate (302). The planes containing the first stiffening plate (301) and the second stiffening plate (302) are at an angle, and the axis of the first stiffening plate (301) and the axis of the second stiffening plate (302) are at an angle.

4. A spatial steel folding beam according to claim 2, characterized in that, The stiffening plate is connected to the side of the transition wing plate facing the transition web (305).

5. A spatial steel folding beam according to any one of claims 1-4, characterized in that, The transition wing includes a first transition wing (303) and a second transition wing (304), and there is an angle between the plane where the first transition wing (303) is located and the plane where the second transition wing (304) is located.

6. A spatial steel folding beam according to any one of claims 1-4, characterized in that, The transition web (305) is a curved panel structure.

7. A spatial steel folding beam according to any one of claims 1-4, characterized in that, The first beam segment (1) is connected to a third beam segment (4) at the end away from the second beam segment (2). The axis of the third beam segment (4) is parallel to the axis of the second beam segment (2), and the plane of the web of the third beam segment (4) is parallel to the plane of the web of the first beam segment (1).

8. A steel structure for a sloping roof, characterized in that, It includes a spatial steel folding beam as described in any one of claims 1-7.

9. A steel structure for a sloping roof according to claim 8, characterized in that, It also includes a main steel frame beam (5), and the first beam segment (1) and the second beam segment (2) are both bolted to the main steel frame beam (5).

10. A steel structure for a sloping roof according to claim 9, characterized in that, The second beam segment (2) is connected to the side of the corresponding main steel frame beam (5), the main steel frame beam (5) has an I-shaped cross section, and the width direction of the second beam segment (2) is parallel to the width direction of the main steel frame beam (5).

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