CN222771934U - A reinforcement structure for opening a hole in the web of a steel beam - Google Patents
A reinforcement structure for opening a hole in the web of a steel beam Download PDFInfo
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- CN222771934U CN222771934U CN202421252161.5U CN202421252161U CN222771934U CN 222771934 U CN222771934 U CN 222771934U CN 202421252161 U CN202421252161 U CN 202421252161U CN 222771934 U CN222771934 U CN 222771934U
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 67
- 239000010959 steel Substances 0.000 title claims abstract description 67
- 230000002787 reinforcement Effects 0.000 title abstract description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 239000003351 stiffener Substances 0.000 claims description 8
- 238000003466 welding Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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Abstract
本实用新型公开了一种钢梁腹板开洞的补强结构，包括：钢梁腹板中开有洞口，洞口周边设置纵向加劲肋和横向加劲肋；其中，纵向加劲肋位于洞口的上下两侧且平行对称设置，横向加劲肋位于洞口的左右两侧，横向加劲肋两端分别垂直于洞口的上下两侧的纵向加劲肋；其中，纵向加劲肋端部伸出洞口边缘以外的长度为单面加劲肋宽度的2倍，横向加劲肋的总宽度为1/2梁翼缘宽度；其中，纵向加劲肋和横向加劲肋的厚度同钢梁翼缘板的厚度一致。本申请加工方便，避免相邻洞口加劲肋碰撞，广泛适用于钢梁腹板开洞的补强结构。
The utility model discloses a reinforcement structure for a steel beam web opening, comprising: a hole is opened in the steel beam web, and longitudinal stiffening ribs and transverse stiffening ribs are arranged around the hole; wherein the longitudinal stiffening ribs are located on the upper and lower sides of the hole and are arranged in parallel and symmetrically, and the transverse stiffening ribs are located on the left and right sides of the hole, and the two ends of the transverse stiffening ribs are respectively perpendicular to the longitudinal stiffening ribs on the upper and lower sides of the hole; wherein the length of the end of the longitudinal stiffening rib extending beyond the edge of the hole is twice the width of the single-sided stiffening rib, and the total width of the transverse stiffening ribs is 1/2 of the beam flange width; wherein the thickness of the longitudinal stiffening ribs and the transverse stiffening ribs is consistent with the thickness of the steel beam flange plate. The present application is easy to process, avoids collision of adjacent hole stiffening ribs, and is widely applicable to reinforcement structures for steel beam web openings.
Description
Technical Field
The utility model relates to the field of steel structure new construction and reinforcement of building structures, in particular to a reinforcing structure for a steel beam web hole.
Background
The steel structure building has high strength, light dead weight, good earthquake resistance and high construction speed, and is increasingly applied to houses. In order to improve indoor clear height, equipment pipelines often need to pass through steel girder webs, and the reinforcing measures of the steel girders are not only related to the safety of the structure, but also have great influence on construction and economy, so that the method for solving the problem of steel girder hole reinforcement is particularly important.
The web hole reinforcement measures commonly used at present are annular stiffening plate reinforcement, sleeve reinforcement, annular plate reinforcement and stiffening rib reinforcement, but the following problems are also existed:
1. Circular hole reinforcement
When the diameter of the circular hole is smaller than or equal to 1/3 of the height of the beam, the circular hole can be not reinforced. When the height of the beam is larger than 1/3, the annular stiffening plate can be used for stiffening, the sleeve can be used for stiffening, and the annular plate can be used for stiffening. The hole should not be provided in the range corresponding to the beam height from the beam end, the diameter of the hole should not be greater than 1/2 of the beam height, the distance between the edges of adjacent circular holes should not be less than the beam height, and the distance from the edges of the holes to the flange skin of the beam should not be less than 1/40 of the beam height. Because the span of the heavy beam in the residential building is smaller, the section of the steel beam is generally 300-400mm, and according to the standard requirement, the diameter of a round hole is not more than 200, but the mechanical and electrical multiple pipelines are often penetrated, the round hole utilization rate is lower, the multiple pipeline penetration is difficult to meet, the beam span is smaller, the requirement that the hole is 1 time of the beam height from the beam end and the edge distance between the adjacent holes is not more than the beam height is met, and a plurality of holes are difficult to open, so that the round hole cannot meet the multiple pipeline penetration.
2. Square hole reinforcement (as shown in figure 1, high Steel rule practice)
The distance between a rectangular aperture and an adjacent aperture must not be less than the greater of the beam height or rectangular aperture length. The distance from the upper and lower edges of the aperture to the flange skin must not be less than 1/4 of the beam height. As shown in FIG. 1, the length of the rectangular orifice is not more than 750mm, the height of the orifice is not more than 1/2 of the height of the beam, and the orifice should not be provided with holes in a range from the end of the beam corresponding to the height of the beam. The ends of the horizontal stiffeners at the upper and lower edges of the rectangular aperture preferably extend 300mm beyond the edges of the aperture. When the rectangular aperture length is greater than the beam height, its transverse stiffeners should be located along the full height of the beam (fig. 1). When the aperture length is greater than 500mm, stiffening ribs should be provided on both sides of the web. Because the end parts of the horizontal stiffening ribs need to extend 300mm beyond the edges of the holes, the stiffening ribs often collide with each other when adjacent holes are close, and the stiffening ribs are difficult to set when the elevation of the adjacent holes is different. Meanwhile, when the beam and the column are rigidly connected at the end part of the steel beam, because the beam height is generally 300-400, even if the hole avoids 1 time of the beam height, the stiffening rib can collide with the bolt, so that great difficulty is brought to construction, and in a steel structure house with a support, the collision of the stiffening rib is particularly obvious.
In order to overcome the defects, the application provides a novel steel beam hole-opening reinforcing structure, which not only avoids collision of adjacent holes, but also is convenient to construct and saves the steel consumption.
Disclosure of utility model
The application aims to solve the technical problems that when a web plate of a heavy steel beam is provided with holes for reinforcement, the stiffening ribs are too long, so that beam-column connection, beam-beam splicing joints are affected, and electromechanical pipelines cannot be arranged.
The application provides a reinforcing structure for a steel beam web hole, which comprises a steel beam web, wherein a hole is formed in the steel beam web, longitudinal stiffening ribs and transverse stiffening ribs are arranged on the periphery of the hole, the longitudinal stiffening ribs are arranged on the upper side and the lower side of the hole and are symmetrically arranged in parallel, the transverse stiffening ribs are arranged on the left side and the right side of the hole, two ends of each longitudinal stiffening rib are respectively perpendicular to the transverse stiffening ribs on the upper side and the lower side of the hole, the length of the end part of each longitudinal stiffening rib, which extends out of the edge of the hole, is 2 times of the width of a single-sided stiffening rib, the total width of each transverse stiffening rib is 1/2 of the width of a beam flange, and the thicknesses of the longitudinal stiffening ribs and the transverse stiffening ribs are consistent with the thickness of the steel beam flange plate.
According to an embodiment of the application, when the beam width is 200mm, the length of the longitudinal stiffener ends extending beyond the edge of the hole is 100mm.
According to an embodiment of the application, the hole perimeter is provided with longitudinal stiffeners and transverse stiffeners by welding.
According to an embodiment of the application, the steel beam is an H-beam.
According to the embodiment of the application, the steel beam comprises a vertical web plate, and the upper end and the lower end of the web plate are respectively and fixedly connected with flange plates which are horizontally arranged.
According to an embodiment of the application, the distance between the longitudinal stiffening rib and the transverse stiffening rib and the edge of the hole is not less than 10mm.
According to an embodiment of the application, the opening is a rectangular opening.
According to the embodiment of the application, a combined floor system composed of profiled steel sheets and concrete is fixed above the steel beam flange plates.
According to an embodiment of the application, the steel beam section is divided by the web portal into an upper inverted earth-shaped section and a lower earth-shaped section.
Compared with the prior art, the technical scheme of the application has the following beneficial effects:
1. According to the utility model, the technical scheme that the width of the flange of the beam is 1/2 of the total width of the transverse stiffening rib, the extending length of the stiffening rib is 2 times of the width of the single-sided stiffening rib, the thickness of the stiffening rib is equal to that of the flange, and the longitudinal stiffening rib and the transverse stiffening rib are symmetrically arranged, so that the requirement of building standards is met, the plastic limit bending moment MP is not more than the maximum flexural bearing capacity Mm of the web perforated beam, the extending length of the stiffening rib is further optimized, the problems of collision of the stiffening rib at adjacent holes, collision of the stiffening rib with a beam column connecting bolt and the like are well solved, the stiffening rib is shortened, the steel consumption is reduced, and the construction is convenient.
2. According to the utility model, the longitudinal stiffening ribs and the transverse stiffening ribs are welded at the periphery of the web hole for reinforcement, so that the rigidity and the bearing capacity of the web hole are improved, shearing damage to corners of the hole is avoided, the structure is simple, the operation is convenient, the bearing capacity and the rigidity loss caused by opening the hole are effectively compensated, the bearing capacity and the deformation resistance of the web hole composite beam are improved, and the web hole composite beam has a good conversion prospect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following brief description of the drawings of the embodiments will make it apparent that the drawings in the following description relate only to some embodiments of the present application and are not limiting of the present application.
FIG. 1 is a schematic diagram of a square hole reinforcement structure in the prior art.
FIG. 2 is a schematic structural view of a reinforcing structure for a steel beam web hole according to an example of the present utility model;
fig. 3 is a cross-sectional view taken along direction AA in fig. 2.
The reference numerals are explained as follows:
1. the steel beam, 2, the entrance to a cave, 3, the horizontal stiffening rib, 4, the vertical stiffening rib.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present application. It will be apparent that the described embodiments are some, but not all, embodiments of the application. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present application fall within the protection scope of the present application.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.
As shown in fig. 2 and 3, the reinforcing structure for the holes of the web plate of the steel beam in the embodiment of the utility model comprises a hole 2 formed in the web plate of the steel beam 1, transverse stiffening ribs 3 and longitudinal stiffening ribs 4 arranged around the hole 2.
In the embodiment, a hole 2 is formed in a web plate of the steel beam 1, transverse stiffening ribs 3 and longitudinal stiffening ribs 4 are arranged on the periphery of the hole 2, wherein the longitudinal stiffening ribs 4 are arranged on the upper side and the lower side of the hole 2 in parallel and symmetrically, the transverse stiffening ribs 3 are arranged on the left side and the right side of the hole 2, and two ends of the transverse stiffening ribs 3 are respectively perpendicular to the longitudinal stiffening ribs 4 on the upper side and the lower side of the hole 2.
Specifically, according to the 'steel standard' 6.5.2 specifications, the maximum flexural bearing capacity Mm of the web open-pore beam with the reinforcement is provided, and when the reinforcement method meets the plastic limit bending moment Mp which is not more than Mm, the overhanging length of the stiffening rib can be further optimized. The maximum flexural capacity Mm of the web open-pore beam with reinforcement is calculated according to the following formula:
When t we＜Ar:
when t we≥Ar:
Wherein M p is plastic limit bending moment, M p＝fy Z (N.mm);
Δa s —web open weakened area, Δa s＝h0tw(mm2);
h 0 —web aperture height (mm);
t w —web thickness (mm);
Δa s —web open weakened area, Δa s＝h0tw-2Ar;
A r -web unilateral stiffener cross sectional area.
Through calculation, when the total width of the stiffening rib is 1/2 of the width of the flange of the beam, the overhanging length of the stiffening rib is 2 times of the width of the single-sided stiffening rib, and the thickness of the stiffening rib is equal to the thickness of the flange, and the two sides are symmetrically arranged, the calculation requirements can be met. Therefore, the application is preferably designed in such a way that the length of the end part of the longitudinal stiffening rib 4 extending out of the edge of the hole 2 is 2 times of the width of the single-sided stiffening rib, the width of the longitudinal stiffening rib 4 is 1/2 of the width of the beam flange, the thicknesses of the transverse stiffening rib 3 and the transverse stiffening rib 4 are consistent with the thickness of the flange plate of the steel beam 1, and the optimization solves the problems of collision of the stiffening rib of the adjacent hole 2, collision of the stiffening rib and the beam column connecting bolt, and the like.
Further, when the beam width is 200mm, the length of the end of the longitudinal stiffener 4 extending beyond the edge of the hole 2 may be 100mm. The beam width is not more than 200mm, and the overhanging length of the stiffening rib is optimized to 100mm from 300mm, so that the problems of collision of the stiffening rib at the adjacent hole 2, collision of the stiffening rib and a beam column connecting bolt and the like are well solved.
Further, the periphery of the hole 2 is provided with the longitudinal stiffening ribs 4 and the transverse stiffening ribs 3 through welding, the clearance between the stiffening ribs and the edges of the web hole 2 is not smaller than 10mm, so that the requirement of welding seams is met, the longitudinal stiffening ribs 3 do not protrude out of the left edge and the right edge of the web hole 2, and materials are saved.
Further, the steel beam 1 is an H-shaped steel beam, the web hole 2 is a rectangular hole with rounded corners, and as shown in fig. 3, the section of the steel beam 1 is divided into an upper soil-poured section and a lower soil-poured section by the web hole 2. The height of the web hole 2 is not more than one half of the height of the steel beam 1, the height of the upper soil pouring character-shaped section and the lower soil character-shaped section is not less than one fourth of the height of the steel beam 1, and the length of the hole 2 is not more than 2.5 times of the height of the web hole 2.
Further, the beam comprises a vertical web plate, and the upper end and the lower end of the web plate are respectively and fixedly connected with flange plates which are horizontally arranged.
Further, the hole 2 is a rectangular hole.
Further, a combined floor system composed of profiled steel sheets and concrete is fixed above the flange plates of the steel beam 1.
The implementation method of the reinforcing structure for the steel beam web plate hole comprises the following steps:
S201, opening a hole 2 in a web plate of the steel beam 1;
s202, welding longitudinal stiffening ribs 3 and transverse stiffening ribs 4 around web holes 2 of steel beams 1;
S203, arranging a profiled steel sheet on the upper flange of the steel beam 1, and welding through bolts of the profiled steel sheet;
s204, binding reinforcing steel bars;
And S205, pouring concrete and curing, and finishing the manufacture of the component.
In summary, the technical scheme of the application has the following beneficial effects:
1. According to the utility model, the technical scheme that the width of the flange of the beam is 1/2 of the total width of the transverse stiffening rib, the extending length of the stiffening rib is 2 times of the width of the single-sided stiffening rib, the thickness of the stiffening rib is equal to that of the flange, and the longitudinal stiffening rib and the transverse stiffening rib are symmetrically arranged, so that the requirement of building standards is met, the plastic limit bending moment MP is not more than the maximum flexural bearing capacity Mm of the web perforated beam, the extending length of the stiffening rib is further optimized, the problems of collision of the stiffening rib at adjacent holes, collision of the stiffening rib with a beam column connecting bolt and the like are well solved, the stiffening rib is shortened, the steel consumption is reduced, and the construction is convenient.
2. According to the utility model, the longitudinal stiffening ribs and the transverse stiffening ribs are welded at the periphery of the web hole for reinforcement, so that the rigidity and the bearing capacity of the web hole are improved, shearing damage to corners of the hole is avoided, the structure is simple, the operation is convenient, the bearing capacity and the rigidity loss caused by opening the hole are effectively compensated, the bearing capacity and the deformation resistance of the web hole composite beam are improved, and the web hole composite beam has a good conversion prospect.
The above is only an exemplary embodiment of the present application and is not intended to limit the scope of the present application, which is defined by the appended claims.
Claims (9)
1. A reinforcing structure for a steel beam web hole, comprising:
the steel beam web is provided with a hole, and the periphery of the hole is provided with a longitudinal stiffening rib and a transverse stiffening rib;
The longitudinal stiffening ribs are arranged on the upper side and the lower side of the hole and are symmetrically arranged in parallel, the transverse stiffening ribs are arranged on the left side and the right side of the hole, and two ends of the transverse stiffening ribs are respectively perpendicular to the longitudinal stiffening ribs on the upper side and the lower side of the hole;
The length of the end part of the transverse stiffening rib extending out of the edge of the hole is 2 times of the width of the single-sided stiffening rib, and the total width of the transverse stiffening rib is 1/2 of the width of the flange of the beam;
the thickness of the longitudinal stiffening ribs and the transverse stiffening ribs is consistent with that of the steel beam flange plate.
2. A steel girder web perforated reinforcing structure according to claim 1, wherein the length of the longitudinal stiffener ends extending beyond the edges of the hole is 100mm when the girder width is 200 mm.
3. A steel girder web perforated reinforcing structure according to claim 1, wherein the hole periphery is provided with the longitudinal stiffening ribs and the transverse stiffening ribs by welding.
4. The steel girder web perforated reinforcing structure according to claim 1, wherein the steel girder is an H-shaped steel girder.
5. The reinforcing structure for the web holes of the steel beams according to claim 1, wherein the steel beams comprise vertical webs, and flange plates horizontally arranged are fixedly connected to the upper end and the lower end of each web.
6. A steel girder web perforated reinforcing structure according to claim 1, wherein the distance between the longitudinal stiffening ribs and the transverse stiffening ribs and the edges of the holes is not less than 10mm.
7. A steel girder web perforated reinforcing structure according to claim 1, wherein the holes are rectangular holes.
8. The reinforcing structure for the steel beam web hole of claim 1, wherein a composite floor formed by profiled steel sheets and concrete is fixed above the steel beam flange plate.
9. A reinforcing structure for a web opening of a steel beam as claimed in claim 1, wherein the steel beam section is divided into an upper inverted-soil-character-shape and a lower-soil-character-shape section by the web opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421252161.5U CN222771934U (en) | 2024-06-04 | 2024-06-04 | A reinforcement structure for opening a hole in the web of a steel beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421252161.5U CN222771934U (en) | 2024-06-04 | 2024-06-04 | A reinforcement structure for opening a hole in the web of a steel beam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222771934U true CN222771934U (en) | 2025-04-18 |
Family
ID=95348411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202421252161.5U Active CN222771934U (en) | 2024-06-04 | 2024-06-04 | A reinforcement structure for opening a hole in the web of a steel beam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222771934U (en) |
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- 2024-06-04 CN CN202421252161.5U patent/CN222771934U/en active Active
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