Multi-orifice steel beam structure for optimizing building clearance height

Abstract

The utility model discloses a multi-orifice steel beam structure for optimizing the clearance height of a building. A steel beam is mainly composed of an upper flange plate (1), a beam web (2), channel steel stiffening ribs (3), rectangular ring stiffening ribs (4) and a lower flange plate (5). The beam web (2) is provided with a plurality of rectangular orifices (201), rectangular ring stiffening ribs (4) are mounted in the rectangular orifices in a full penetration welding manner, and channel steel stiffening ribs (3) are vertically and symmetrically arranged on the side edge of a rectangular cavity to form a'six-surface closed 'box-shaped'short column' for bearing complex stress and deformation, so that the plurality of rectangular orifices can be favorably formed in a larger longitudinal range of the steel beam web. The rectangular holes are used for optimally installing various pipelines such as a drainage pipeline, a water supply pipeline, a gas pipeline, a cable bridge, a fire-fighting pipeline and a heating ventilation pipe, the building space on the lower portion of the steel beam is not occupied, and therefore the decorative ceiling can be tightly attached to the bottom of the steel beam, the clearance height is increased to the maximum extent, and the use function and comfort of the building space are guaranteed. And safe and reliable stress is ensured.

Description

Technical Field

[0001] The utility model relates to the field of building steel structure engineering construction, in particular to a multi-hole steel beam structure for optimizing the building clearance height. Background Art

[0002] In hospitals, large complexes and other construction projects with complex functions and many electromechanical pipelines, the installation of electromechanical pipelines under the main steel beam is a key and difficult project. Especially in the walkway area, there are many electromechanical pipelines under the steel beam, and it is necessary to install drainage pipelines, water supply pipelines, gas pipelines, cable trays, fire pipelines, heating and ventilation pipelines and other pipelines. However, the installation space is small, which often leads to a very low building clearance height after the comprehensive installation of electromechanical pipelines. Figure 1 As shown, it seriously affects the use function and comfort.

[0003] One way to solve the above problem is to develop and utilize the building space within the height range of the steel beam web. Multiple rectangular holes can be opened on the steel beam web, and various pipelines can be moved up and installed through the rectangular holes, thereby saving building space under the steel beam.

[0004] Under existing technical conditions, the opening of multiple rectangular holes in the web of a steel beam is limited by the relevant provisions of the Code for Design of Steel Structures (GB50017-2017): "The distance between a rectangular hole and an adjacent hole should not be less than the beam height and the length of the rectangular hole", and it is required that "holes should not be set within a range of the beam height from the beam end". According to this requirement, when multiple rectangular holes are set in the web of a steel beam, there are dual restrictions on the distance from the beam end and the distance between the holes. For example, in a walkway area with a steel beam span of 3000mm, if the cross-sectional height of the steel beam is 800mm, the distance between the rectangular holes and both ends of the steel beam should be greater than 800mm. If two rectangular holes are opened, a space of more than 800mm should be left between the rectangular holes. The total length of the rectangular holes that can be opened in the web of the steel beam is less than 600mm. In this case, the horizontal (longitudinal) length of the rectangular hole accounts for about 20% of the length of the steel beam. Even if a small number of pipelines are passed through the holes after opening, the requirement for significantly increasing the building clearance height cannot be met ( Figure 2 ).

[0005] In the prior art, the Chinese utility model patent "A reinforcement structure with rectangular openings in the web of an assembled steel beam" (application number 202122595444.2) mainly forms an "open, I-section" box-type reinforcement structure by setting transverse inner stiffening ribs, vertical inner stiffening ribs, outer sealing plates and panels to reinforce the web, aiming to increase the height of the rectangular opening and enhance the safety of the steel beam. It only considers the engineering application scenario of setting a single rectangular opening. For engineering situations where multiple rectangular openings are set along the longitudinal direction of the steel beam, it is necessary to consider the factors of complex stress and deformation in the area between the opening and the beam end and the area between the openings, which the patent does not cover. The Chinese utility model patent "A structure for opening and passing pipes on residential steel beams" (application number 202222048602.7) mainly considers a single rectangular opening to realize the passage of pipelines on both sides of the steel beam, and at the same time realize the passage of pipelines between the upper and lower parts of the steel beam. The patent also does not cover the engineering needs of setting multiple rectangular openings along the longitudinal direction of the steel beam.

[0006] Therefore, it is urgent for technical personnel to study the engineering scenario of setting multiple rectangular openings along the longitudinal direction of the steel beam, so that multiple rectangular openings can be opened in a large longitudinal range of the web of the steel beam to install more or even all electromechanical pipelines, thereby optimizing the building clearance height ( Figure 3 ), and ensure that its force is safe and reliable. Utility Model Content

[0007] The purpose of the utility model is to solve the deficiencies in the above-mentioned prior art and to provide a multi-hole steel beam structure for optimizing the headroom height of a building.

[0008] The technical solution provided by the utility model is as follows:

[0009] A multi-hole steel beam structure for optimizing the headroom height of a building, comprising an upper flange plate, a beam web plate, a lower flange plate, a plurality of channel steel stiffening ribs and a plurality of rectangular ring stiffening ribs;

[0010] One end of the beam web is fixedly connected to the upper flange plate, and the other end is fixedly connected to the lower flange plate. The upper flange plate, the beam web and the lower flange plate form a main steel beam skeleton with an I-shaped cross section.

[0011] The web of the beam is provided with a plurality of rectangular openings, and the rectangular ring stiffening ribs are fixedly arranged at the openings of the rectangular openings;

[0012] The channel steel stiffening rib is fixedly arranged on the main frame of the steel beam, the upper end surface of the channel steel stiffening rib is fixedly connected to the upper flange plate, the lower end surface of the channel steel stiffening rib is fixedly connected to the lower flange plate, the two sides of the opening of the channel steel stiffening rib are fixedly connected to the beam web, and the connection between the channel steel stiffening rib and the main frame of the steel beam forms a box-shaped column. The six sides of the box-shaped column are all closed.

[0013] As a further improvement of the utility model, the upper margin between the rectangular hole and the beam web is greater than 200 mm, the lower margin between the rectangular hole and the beam web is greater than 150 mm, the side margin between the rectangular hole and the beam web is greater than 300 mm, the vertical spacing between the rectangular holes is greater than 150 mm, and the horizontal spacing between the rectangular holes is greater than 300 mm.

[0014] As a further improvement of the utility model, the channel steel stiffening rib is a channel steel with a cross-sectional height of 180-200 mm, and the length of the channel steel stiffening rib is the same as the height of the main frame of the steel beam.

[0015] As a further improvement of the utility model, the rectangular ring stiffening rib includes a longitudinal rib segment, a transverse rib segment and an arc rib segment. The longitudinal rib segment and the arc rib segment are fixed by welding, and the transverse rib segment and the arc rib segment are fixed by welding. The thickness of the longitudinal rib segment, the transverse rib segment or the arc rib segment is the same as the thickness of the upper flange plate and the lower flange plate.

[0016] As a further improvement of the present invention, the rectangular ring stiffening rib includes a longitudinal rib segment, a transverse rib segment and an arc rib segment. The rectangular ring stiffening rib is formed as one piece by casting. The thickness of the longitudinal rib segment, the transverse rib segment or the arc rib segment is the same as the thickness of the upper flange plate and the lower flange plate.

[0017] As a further improvement of the utility model, two channel steel stiffening ribs form a symmetrical group, and the channel steel stiffening ribs of the symmetrical group are symmetrically arranged on both sides of the beam web. A group of channel steel stiffening ribs is connected with the main frame of the steel beam to form a box-shaped column, and the six sides of the box-shaped column are all closed and the cross section is in the shape of a Chinese character "Y".

[0018] As a further improvement of the present invention, the beam web and the upper flange plate are fixedly connected by a full penetration butt weld; the beam web and the lower flange plate are fixedly connected by a full penetration butt weld; the channel steel stiffening rib and the main steel beam frame are fixedly connected by a fillet weld; the rectangular ring stiffening rib and the opening of the rectangular hole of the beam web are fixedly connected by a full penetration butt weld.

[0019] As a further improvement of the utility model, the rectangular opening is arranged in the gap between adjacent channel steel stiffening ribs on the beam web.

[0020] As a further improvement of the utility model, the web of the beam is provided with a plurality of rectangular openings, which can be used to install various electromechanical pipelines such as air conditioning ducts, fire protection pipelines, cable trays, drainage pipelines, water supply pipelines, gas pipelines, etc.;

[0021] As a further improvement of the utility model, the upper flange plate, the beam web plate and the lower flange plate of the steel beam are connected to the I-shaped steel column by full penetration butt welds.

[0022] Compared with the prior art, the above technical solution has the following beneficial effects:

[0023] (1) The utility model opens a plurality of rectangular openings on the web of the steel beam for installing various electromechanical pipelines. Compared with the prior art in which the web of the steel beam has no openings or has a small number of openings, the building clearance height is significantly optimized, and the use function and comfort of the building space can be significantly improved.

[0024] (2) The utility model provides channel steel stiffening ribs on the side of the web of the beam to form a "six-sided closed" box-type "short column" with extremely high rigidity, not easy to deform, and able to withstand complex stresses. Its comprehensive bearing capacity is significantly better than the "open, I-section" box-type reinforced structure of the prior art.

[0025] Alternatively, the utility model has channel steel stiffening ribs symmetrically arranged on both sides of the web of the beam, and the symmetrically arranged channel steel stiffening ribs and the main frame of the steel beam form a box-type column, and the box-type column forms a "short column with a "six-sided closed, I-shaped cross-section" box-type, which has extremely high rigidity, is not easy to deform, and can withstand complex stresses. Its comprehensive bearing capacity is significantly better than the "open, I-shaped cross-section" box-type reinforced structure in the prior art.

[0026] By setting the above two box-type columns, i.e. "short columns", at both ends of the steel beam, the rectangular openings can be set close to the beam ends, thus avoiding the restriction of "no holes within the range of the beam height from the beam ends"; by setting "short columns" between adjacent rectangular openings, the restriction of "the distance between the rectangular opening and the adjacent opening should not be less than the beam height" can be avoided. The width of the box-type "short column" is 180-200mm, with 50mm welding operation space left on both sides, and the total width can reach 300mm, which is much smaller than the cross-sectional height of the steel beam, thus facilitating the opening of multiple rectangular openings in a larger longitudinal range of the web of the steel beam.

[0027] (3) The upper flange plate, beam web plate and longitudinal rib plate segments of the utility model constitute an I-shaped "upper beam limb" with relatively large rigidity, the two longitudinal rib plate segments and web plate of the middle part of the steel beam adjacent to the rectangular opening constitute an I-shaped "middle beam limb" with relatively large rigidity, and the lower flange plate, beam web plate and longitudinal rib plate segments constitute an I-shaped "lower beam limb" with relatively large rigidity. Based on this, a plurality of "short columns", "upper beam limb", "middle beam limb" and "lower beam limb" can constitute a "micro-frame" with relatively large rigidity, which can ensure that the overall bearing capacity and anti-deformation capacity of the steel beam meet the requirements, and ensure the safety and reliability of the steel beam with multiple openings.

[0028] (4) The "middle beam limb" and "lower beam limb" formed by the rectangular ring stiffening ribs with rectangular holes welded through the utility model can be used to place and install electromechanical pipelines, thereby saving a large number of pipeline hangers, saving materials and work hours, and achieving good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the layout of steel structure beams and electromechanical pipelines in the prior art;

[0030] Figure 2 A schematic diagram of the arrangement of electromechanical pipelines when multiple holes are opened in a steel structure beam in the prior art;

[0031] Figure 3 Schematic diagram of the layout of steel structure beams and electromechanical pipelines optimized for the utility model;

[0032] Figure 4 It is a schematic diagram of the framework arrangement consisting of steel structural beams and steel columns of the utility model;

[0033] Figure 5 for Figure 4 AA section view;

[0034] Figure 6 for Figure 4 BB cross-section diagram;

[0035] Figure 7 for Figure 4 The CC section diagram (schematic diagram of the "short column" shaped section setting between the orifices);

[0036] Figure 8 for Figure 4 DD section diagram (schematic diagram of the "short column" at the end of the steel beam with a "Y"-shaped section);

[0037] Fig. 9 It is a schematic diagram of the axonometric view of the upper flange plate of the steel structure beam of the utility model;

[0038] Fig.10 It is a schematic diagram of the axonometric view of the lower flange plate of the steel structure beam of the utility model;

[0039] Fig.11 It is a schematic diagram of an axonometric view of the web of a steel structure beam of the utility model;

[0040] Fig.12 It is a schematic diagram of the axonometric view of the channel steel stiffening rib of the steel structure beam of the utility model;

[0041] Fig.13 It is a schematic diagram of an axonometric view of a rectangular ring stiffening rib of a steel structure beam of the utility model;

[0042] In the figure: 1-upper flange plate, 2-beam web plate, 3-channel steel stiffener, 4-rectangular ring stiffener, 5-lower flange plate; 6-I-shaped steel column, 7-floor, 8-decorative ceiling, 9-air conditioning duct, 10-fire protection pipeline, 11-cable tray, 12-drainage pipeline, 13-water supply pipeline, 14-gas pipeline, 15-clearance height;

[0043] 201- rectangular opening, 202- distance from hole to upper edge, 203- vertical distance between holes, 204- distance from hole to lower edge, 205- distance from hole to beam end, 206- horizontal distance between holes; 401- longitudinal rib section, 402- transverse rib section, 403- arc rib section. DETAILED DESCRIPTION

[0044] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments.

[0045] Example 1

[0046] A multi-hole steel beam structure for optimizing the headroom height of a building, comprising an upper flange plate 1, a beam web plate 2, a lower flange plate 5, a plurality of channel steel stiffening ribs 3 and a plurality of rectangular ring stiffening ribs 4;

[0047] One end of the beam web 2 is fixedly connected to the upper flange plate 1, and the other end is fixedly connected to the lower flange plate 5. The upper flange plate 1, the beam web 2 and the lower flange plate 5 form a main steel beam skeleton with an I-shaped cross section.

[0048] The web plate 2 of the beam is provided with a plurality of rectangular openings 201, and the rectangular ring stiffening ribs 4 are fixedly arranged at the openings of the rectangular openings 201; the web plate 2 of the beam is provided with a plurality of rectangular openings 201, which can be used to install various electromechanical pipelines such as air conditioning ducts 9, fire protection pipelines 10, cable trays 11, drainage pipelines 12, water supply pipelines 13, gas pipelines 14, etc.;

[0049] The channel steel stiffening rib 3 is fixedly arranged on the main frame of the steel beam, the upper end surface of the channel steel stiffening rib 3 is fixedly connected to the upper flange plate 1, the lower end surface of the channel steel stiffening rib 3 is fixedly connected to the lower flange plate 5, the two side edges of the opening of the channel steel stiffening rib 3 are fixedly connected to the beam web 2, and the connection between the channel steel stiffening rib 3 and the main frame of the steel beam forms a box-type column, and the six sides of the box-type column are all closed.

[0050] The upper flange plate 1, the beam web plate 2 and the lower flange plate 5 of the steel beam are connected to the I-shaped steel column 6 by full penetration butt welds.

[0051] Example 2

[0052] The rest are consistent with Example 1. In this scheme: the upper margin between the rectangular hole 201 and the beam web 2, that is, the distance 202 from the hole to the upper margin is greater than 200 mm; the lower margin between the rectangular hole 201 and the beam web 2, that is, the distance 204 from the hole to the lower margin is greater than 150 mm; the side margin between the rectangular hole 201 and the beam web 2, that is, the distance 205 from the hole to the beam end is greater than 300 mm; the vertical spacing between the rectangular holes 201, that is, the vertical distance 203 between holes is greater than 150 mm; the horizontal spacing between the rectangular holes 201, that is, the horizontal distance 206 between holes is greater than 300 mm.

[0053] Example 3

[0054] The rest is consistent with Example 1 or 2. In this solution: the channel steel stiffening rib 3 is a channel steel with a cross-sectional height of 180-200 mm, and the length of the channel steel stiffening rib 3 is the same as the height of the main frame of the steel beam.

[0055] Example 4

[0056] The rest is consistent with any one of the schemes of Embodiments 1-3. In this scheme: the channel steel stiffening rib 3 is a channel steel with a cross-sectional height of 180-200 mm, and the length of the channel steel stiffening rib 3 is the same as the height of the main frame of the steel beam.

[0057] Example 5

[0058] The rest is consistent with any of the schemes in Examples 1-4. In this scheme: the rectangular ring stiffening rib 4 includes a longitudinal rib segment 401, a transverse rib segment 402 and an arc rib segment 403. The longitudinal rib segment 401 and the arc rib segment 403 are fixed by welding, and the transverse rib segment 402 and the arc rib segment 403 are fixed by welding. The thickness of the longitudinal rib segment 401, the transverse rib segment 402 or the arc rib segment 403 is the same as the thickness of the upper flange plate 1 and the lower flange plate 5.

[0059] Example 6

[0060] The rest is consistent with any one of the schemes in Examples 1-5. In this scheme: the rectangular ring stiffening rib 4 includes a longitudinal rib segment 401, a transverse rib segment 402 and an arc rib segment 403. The rectangular ring stiffening rib 4 is integrally formed by casting. The thickness of the longitudinal rib segment 401, the transverse rib segment 402 or the arc rib segment 403 is the same as the thickness of the upper flange plate 1 and the lower flange plate 5.

[0061] Example 7

[0062] The rest is consistent with any one of the schemes of Examples 1-6. In this scheme: two channel steel stiffening ribs 3 form a symmetrical group, and the channel steel stiffening ribs 3 of the symmetrical group are symmetrically arranged on both sides of the beam web 2. The symmetrically arranged channel steel stiffening ribs and the main frame of the steel beam form a box-shaped column, and the six sides of the box-shaped column are all closed and the cross-section is a "Y" shape.

[0063] Example 8

[0064] The rest is consistent with any one of the schemes of Examples 1-7. In this scheme: the beam web 2 and the upper flange plate 1 are fixedly connected by a full penetration butt weld.

[0065] Example 9

[0066] The rest is consistent with any one of the schemes of Embodiments 1-8. In this scheme: the beam web 2 and the lower flange plate 5 are fixedly connected by a full penetration butt weld.

[0067] Example 10

[0068] The rest is consistent with any one of the schemes in Examples 1-9. In this scheme: the channel steel stiffening rib 3 is fixedly connected to the main frame of the steel beam through a fillet weld.

[0069] Embodiment 11

[0070] The rest is consistent with any of the schemes in Examples 1-10. In this scheme: the rectangular ring stiffening rib 4 is fixedly connected to the opening of the rectangular hole 201 of the beam web 2 by a full penetration butt weld.

[0071] Example 12

[0072] The rest is consistent with any of the schemes in Examples 1-11. In this scheme: the rectangular opening 201 is arranged in the gap between adjacent channel steel stiffening ribs 3 on the beam web 2.

[0073] Embodiment 13

[0074] The rest is consistent with any of the schemes in Examples 1-12. In this scheme: a plurality of channel steel stiffening ribs 3 are provided, channel steel stiffening ribs 3 are provided at both ends of the beam web 2, and the remaining channel steel stiffening ribs 3 are provided in the gaps between the rectangular openings 201.

[0075] The above contents are examples and explanations of the present invention, but do not mean that the advantages that can be achieved by the present invention are limited thereto. Any simple changes in the structure that may be made during the practice of the present invention, and / or one or more of the advantages achieved in some embodiments are within the scope of protection of this application.

Claims

1. A multi-hole steel beam structure for optimizing building headroom, characterized in that : comprising an upper flange plate (1), a beam web plate (2), a lower flange plate (5), a plurality of channel steel stiffening ribs (3) and a plurality of rectangular ring stiffening ribs (4); One end of the beam web (2) is fixedly connected to the upper flange plate (1), and the other end is fixedly connected to the lower flange plate (5); the upper flange plate (1), the beam web (2) and the lower flange plate (5) form a main steel beam skeleton with an I-shaped cross section; The beam web (2) is provided with a plurality of rectangular openings (201), and the rectangular ring stiffening ribs (4) are fixedly arranged at the openings of the rectangular openings (201); The channel steel stiffening rib (3) is fixedly arranged on the main frame of the steel beam, the upper end surface of the channel steel stiffening rib (3) is fixedly connected to the upper flange plate (1), the lower end surface of the channel steel stiffening rib (3) is fixedly connected to the lower flange plate (5), the two side edges of the opening of the channel steel stiffening rib (3) are fixedly connected to the beam web (2), and the connection between the channel steel stiffening rib (3) and the main frame of the steel beam forms a box-shaped column; The upper margin between the rectangular opening (201) and the beam web (2) is greater than 200 mm, the lower margin between the rectangular opening (201) and the beam web (2) is greater than 150 mm, the side margin between the rectangular opening (201) and the beam web (2) is greater than 300 mm, the vertical spacing between the rectangular openings (201) is greater than 150 mm, and the horizontal spacing between the rectangular openings (201) is greater than 300 mm.

2. The multi-hole steel beam structure for optimizing building headroom according to claim 1, characterized in that The channel steel stiffening rib (3) is a channel steel with a cross-sectional height of 180-200 mm, and the length of the channel steel stiffening rib (3) is the same as the height of the main frame of the steel beam.

3. The multi-hole steel beam structure for optimizing building headroom according to claim 1, characterized in that The rectangular ring stiffening rib (4) comprises a longitudinal rib plate segment (401), a transverse rib plate segment (402) and an arc rib plate segment (403); the longitudinal rib plate segment (401) and the arc rib plate segment (403) are fixed by welding, and the transverse rib plate segment (402) and the arc rib plate segment (403) are fixed by welding; the thickness of the longitudinal rib plate segment (401), the transverse rib plate segment (402) or the arc rib plate segment (403) is the same as the thickness of the upper flange plate (1) and the lower flange plate (5).

4. The multi-hole steel beam structure for optimizing building headroom according to claim 1, characterized in that The rectangular ring stiffening rib (4) comprises a longitudinal rib plate segment (401), a transverse rib plate segment (402) and an arc rib plate segment (403); the rectangular ring stiffening rib (4) is integrally formed by casting; the thickness of the longitudinal rib plate segment (401), the transverse rib plate segment (402) or the arc rib plate segment (403) is the same as the thickness of the upper flange plate (1) and the lower flange plate (5).

5. The multi-hole steel beam structure for optimizing building headroom according to any one of claims 1 to 4, characterized in that Two channel steel stiffening ribs (3) form a symmetrical group, and the channel steel stiffening ribs (3) of the symmetrical group are symmetrically arranged on both sides of the beam web (2).

6. The multi-hole steel beam structure for optimizing building headroom according to claim 5, characterized in that : The beam web (2) and the upper flange plate (1) are fixedly connected by a full penetration butt weld; the beam web (2) and the lower flange plate (5) are fixedly connected by a full penetration butt weld; the channel steel stiffening rib (3) and the main steel beam skeleton are fixedly connected by a fillet weld; the rectangular ring stiffening rib (4) and the opening of the rectangular opening (201) of the beam web (2) are fixedly connected by a full penetration butt weld.

7. The multi-hole steel beam structure for optimizing building headroom according to claim 6, characterized in that The rectangular opening (201) is arranged in the gap between adjacent channel steel stiffening ribs (3) on the beam web (2).

8. The multi-hole steel beam structure for optimizing building headroom according to claim 7, characterized in that A plurality of channel steel stiffening ribs (3) are provided, and channel steel stiffening ribs (3) are provided at both ends of the beam web (2), and the remaining channel steel stiffening ribs (3) are provided in the gaps between the rectangular openings (201).

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