Combination column for steel structure portal support
By designing composite columns for steel structure portal supports, using intermittent fillet welds and stiffening plates to connect to form T-shaped composite columns, the problems of two-way rigid connections and insufficient torsional stiffness in steel structure portal supports are solved. Improved structural safety and construction convenience.
Patent Information
- Application Number
- CN202420241414.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-31
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-01-31
AI Technical Summary
The prior art is difficult to effectively solve the problem of bidirectional rigid connection between rigid frame beams and columns, and the door support beams and columns in steel structure gantry support beams and columns, and the torsional stiffness is insufficient, which affects structural safety.
A composite column is designed for steel structure portal support. Through the combination of door rigid column and portal support column, intermittent fillet welds and stiffening plates are used to connect to form a T with two-way bending stiffness and torsional stiffness. shaped composite column.
It effectively improves the longitudinal stiffness and torsional stiffness of the door rigid structure, ensuring the safety and stability of the structure under two-way stress, while simplifying the construction operation and reducing the project cost.
Smart Images
Figure CN222375799U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of building structures, in particular to a combined column used for steel structure door-type support. Background Art
[0002] Portal frame lightweight house structures are widely used in factories, logistics, warehouses and other building forms. The portal frame structure is arranged horizontally, and rigid tie rods are used to connect each frame longitudinally. Inter-column supports are set according to certain spacing requirements to form a longitudinal lateral force resistance system. The commonly used form of inter-column support is cross-cross support. When it is limited by process conditions or traffic requirements, portal support is also used. The portal support consists of portal support columns and portal support beams, which are generally welded H-shaped sections. Since the steel column where the portal support is set is bidirectionally stressed, it not only bears the transverse frame load, but also the longitudinal horizontal load. Therefore, the top of the steel column here is a bidirectional rigid connection method to meet the bidirectional deformation requirements. Correspondingly, the steel column should have bending stiffness in two directions, that is, both directions are strong axis directions, then the steel column needs to be set as a cross-section column or a box-section column. The cross-section column has a large slenderness ratio, which is not economical to calculate and has complex construction nodes. The box-section column is a closed section, and it is difficult to achieve a hinged connection at the bottom of the column. A through partition needs to be set at the beam-column node, which makes the construction complicated. Utility Model Content
[0003] The purpose of the utility model is to overcome the shortcomings of the above-mentioned background technology and provide a combined column for steel structure portal support, which can effectively solve the problem of bidirectional rigid connection between rigid frame beams and rigid frame columns, portal support beams and portal support columns, and has torsional rigidity under bidirectional force, providing reliable protection for structural safety; at the same time, the upper and lower end connection nodes are simple to construct, easy to manufacture, transport and install, with a clear force transmission path and good economy.
[0004] To achieve the above-mentioned purpose, the utility model is designed to provide a composite column for steel structure portal support, comprising a portal column and a portal support column, wherein the portal column comprises a portal column web and a portal column flange plate, wherein the portal column flange plates are arranged on both sides of the portal column web and vertically fixedly connected thereto; the portal support column comprises a portal support column web and a portal support column flange plate, wherein the portal support column flange plates are arranged on both sides of the portal support column web and vertically fixedly connected thereto;
[0005] The portal support column flange plate is in contact with the surface of the portal rigid column web, and the two ends of the flange of the portal support column flange plate are welded and fixed to the portal rigid column web on the same side by intermittent fillet welds arranged along their height direction; a plurality of stiffening plates arranged at intervals along their height direction are respectively arranged on the other side of the portal rigid column web and between the two sides of the portal support column web, and the stiffening plates are welded and fixed to the portal rigid column web and the portal support column web by circumferential fillet welds.
[0006] As a preferred embodiment, the door column has a column top end and a column bottom end, and the size of the door column gradually decreases from the column top end to the column bottom end.
[0007] As a preferred embodiment, the flange positioning center line of the portal support column is aligned with the height center line of the portal column web at the bottom end of the portal column.
[0008] As a preferred embodiment, a portal support beam and a door steel beam are respectively arranged on the top of the door steel column to form a door steel structure with a portal support.
[0009] As a preferred embodiment, a plurality of exhaust holes are provided on the stiffening plate.
[0010] As a preferred implementation, the exhaust hole is a triangular exhaust hole, and the side length of the triangular exhaust hole is ≥15 mm.
[0011] As a preferred embodiment, the thickness of the stiffening plate is ≥10 mm.
[0012] As a preferred embodiment, the distance between two adjacent stiffening plates along the height direction of the door column is 1500 mm to 2000 mm.
[0013] As a preferred implementation, the weld leg height of the intermittent fillet weld is ≥10 mm, the length L of the intermittent fillet weld is 100 mm to 120 mm, and the spacing between two adjacent intermittent fillet welds is 100 mm to 120 mm.
[0014] As a preferred embodiment, the weld leg height of the circumferential fillet weld is ≥8 mm.
[0015] Compared with the prior art, the utility model has the following advantages:
[0016] First, the combined column of the utility model effectively ensures the longitudinal rigidity and safety of the door steel structure. For the door steel structure with a portal support, the utility model can better solve the problem that the longitudinal direction of the door steel column is a weak axis bending resistance. The formed combined column has strong longitudinal bending rigidity, which can ensure that the longitudinal deformation is within the specification limit and well transmit the longitudinal horizontal load.
[0017] Secondly, the combined column of the utility model greatly improves the torsional rigidity and cooperative working performance of the door column and the door-type support column by arranging the stiffening plate, ensuring the cooperative deformation capacity of the bending rigidity components in different directions under the load.
[0018] Thirdly, the utility model effectively reduces the project cost. Compared with the cross-section column with bidirectional stiffness, the T-shaped composite column of the utility model has a smaller design section and is easier to meet the slenderness ratio limit requirements; compared with the box-section column, the T-shaped composite column of the utility model can easily realize the design assumption that the column bottom is connected and the column top is rigidly connected, which can greatly save the amount of steel used for the column and the column base.
[0019] Fourthly, the utility model effectively ensures the convenience of construction operation. The door column and the door support column are connected by intermittent corner welds and stiffening plates, and the construction is simple. The column top is connected to the door beam and the door support beam by end plate bolts, and the column bottom is connected to the foundation by anchor bolts, which is convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of a composite column for steel structure portal support of the utility model;
[0021] Figure 2 for Figure 1 Schematic diagram of the structure along the AA direction;
[0022] Figure 3 for Figure 1 Schematic diagram of the structure along the BB direction;
[0023] In the figure, 1-door column, 11-door column web, 12-door column flange plate, 13-column top, 14-column bottom, 2-portal support column, 21-portal support column web, 22-portal support column flange plate, 3-intermittent fillet weld, 4-stiffening plate, 5-circumferential weld fillet weld, 6-flange positioning center line, 7-portal support beam, 8-door beam, 9-exhaust hole. DETAILED DESCRIPTION
[0024] In order to facilitate the understanding of those skilled in the art, the present invention will be further described in detail below in conjunction with specific embodiments, but those skilled in the art will understand that the following embodiments are part of the present invention, not all of the embodiments, and are only used to illustrate the present invention, and should not be regarded as limiting the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.
[0025] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.
[0026] When a component is referred to as being "disposed on" another component, it can be directly on the other component or there can also be an intermediate component. "Disposed" indicates a way of existence, which can be a connection method such as connection, installation, fixed connection, active connection, etc. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there can be an intermediate component at the same time.
[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.
[0028] like Figure 1 to Figure 3 As shown, the utility model is a composite column for steel structure portal support, including a portal column 1 and a portal support column 2. The steel strength of the portal column 1 and the portal support column 2 is generally Q235B or Q355B grade, and the cross-sectional size is determined by calculation. The portal column 1 includes a portal column web 11 and a portal column flange plate 12. The portal column flange plates 12 are arranged on both sides of the portal column web 11 and are vertically fixedly connected to form an H-shaped structure; the portal support column 2 includes a portal support column web 21 and a portal support column flange plate 22. The portal support column flange plates 22 are arranged on both sides of the portal support column web 21 and are vertically fixedly connected to form an H-shaped structure.
[0029] The flange plate 22 of the portal support column contacts the surface of the portal rigid column web 11, and the two ends of the flange of the flange plate 22 of the portal support column are welded and fixed to the portal rigid column web 11 on the same side by intermittent fillet welds 3 arranged along the height direction thereof to form a whole; a plurality of stiffening plates 4 arranged at intervals along the height direction thereof are respectively arranged on the other side of the portal rigid column web 11 and between the two sides of the portal support column web 21, and are welded to them on three sides, and the stiffening plates 4 are welded and fixed to the portal rigid column web 11 and the portal support column web 21 by fillet welds 5, thereby forming an integral T-shaped composite column with a small lower end and a large upper end. The portal rigid column 1 has a column top 13 and a column bottom 14, and the size of the portal rigid column 1 gradually decreases from the column top 13 to the column bottom 14.
[0030] In this embodiment, according to the span of the portal rigid structure and the load arrangement, the size of the portal rigid column 1 can be obtained by calculation, and the cross-sections of the small end 14 of the column bottom and the large end 13 of the column top of the door rigid column 1 can be determined respectively; then, the load borne by each longitudinal rigid frame of the portal rigid structure is determined by calculating the wind load and the seismic action, and the cross-sectional size of the portal support beam and the portal support column is determined by using the method of calculating the deformation of the cross-column support and the portal support deformation equivalent, then the flange width b1 of the portal rigid column 1 and the cross-sectional height h1 of the column bottom of the door rigid column can be determined respectively; the flange width b2 of the portal support column 2 and the cross-sectional height h2 of the column bottom of the portal support column can be determined respectively.
[0031] The flange positioning center line 6 of the portal support column 2 is aligned with the height center line of the portal column web 11 at the bottom of the portal column 1. The portal support beam 7 and the portal beam 8 are respectively arranged on the top 13 of the portal column 1 to form a portal structure with portal support. A plurality of exhaust holes 9 are arranged on the stiffening plate 4. The exhaust hole 9 is a triangular exhaust hole, and the side length of the triangular exhaust hole is ≥15mm so that it can be welded on site. In this embodiment, according to the change in the height of the column section, the stiffening plate 4 is selected, and the exhaust holes 9 are arranged, and they are respectively welded on site with the flanges and webs of the portal column 1 and the portal support column 2, and three-sided corner welds are welded to connect the parts into a whole T-shaped composite column that changes from a small head at the bottom to a large head at the top. The top of the composite column is connected to the portal support beam 7 and the portal beam 8 in two directions to form a portal structure with portal support.
[0032] The thickness of the stiffening plate 4 is ≥10mm, and Q235B grade steel is used. The spacing between two adjacent stiffening plates 4 along the height direction of the door column 1 is 1500mm-2000mm. The weld leg height of the intermittent fillet weld 3 is ≥10mm, the length L of the intermittent fillet weld 3 is 100mm-120mm, and the spacing between two adjacent intermittent fillet welds 3 is 100mm-120mm. The weld leg height of the circumferential fillet weld 5 is ≥8mm.
[0033] The utility model discloses a composite column for steel structure portal support, which connects the portal steel column and the portal support column through intermittent welds to form a composite column with bidirectional bending stiffness, and arranges stiffening plates along the height direction to make the composite column have higher torsional stiffness; the bottom end of the composite column is the small head end of the variable cross-section column, which is hingedly connected to the foundation, and the top end of the composite column is the large head end of the variable cross-section column, which is rigidly connected to the portal steel beam and the portal support beam to jointly resist lateral and longitudinal horizontal loads.
[0034] The above are only specific implementation methods of the present invention. It should be pointed out that any changes or substitutions that can be easily thought of by any technician familiar with the field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention, and the rest not described in detail belong to the prior art.
Claims
1. A composite column for steel structure portal support, characterized in that: The invention comprises a door column (1) and a door support column (2), wherein the door column (1) comprises a door column web (11) and a door column flange plate (12), wherein the door column flange plates (12) are arranged on both sides of the door column web (11) and are vertically fixedly connected thereto; the door support column (2) comprises a door support column web (21) and a door support column flange plate (22), wherein the door support column flange plates (22) are arranged on both sides of the door support column web (21) and are vertically fixedly connected thereto; The portal support column flange plate (22) is in contact with the surface of the portal rigid column web (11), and the two ends of the flange of the portal support column flange plate (22) are welded and fixed to the portal rigid column web (11) located on the same side through intermittent fillet welds (3) arranged along the height direction thereof; a plurality of stiffening plates (4) are arranged at intervals along the height direction thereof between the other side of the portal rigid column web (11) and the two sides of the portal support column web (21), and the stiffening plates (4) are welded and fixed to the portal rigid column web (11) and the portal support column web (21) through circumferential fillet welds (5).
2. The combined column for steel structure portal support according to claim 1, characterized in that: The door column (1) has a column top end (13) and a column bottom end (14), and the size of the door column (1) gradually decreases from the column top end (13) to the column bottom end (14).
3. The combined column for steel structure portal support according to claim 2, characterized in that: The flange positioning center line (6) of the door-type support column (2) is aligned with the height center line of the door column web (11) at the bottom end of the door column (1).
4. The combined column for steel structure portal support according to claim 3, characterized in that: A door support beam (7) and a door steel beam (8) are respectively arranged on the top end (13) of the door steel column (1) to form a door steel structure with a door support.
5. The combined column for steel structure portal support according to any one of claims 1 to 4, characterized in that: The stiffening plate (4) is provided with a plurality of exhaust holes (9).
6. The combined column for steel structure portal support according to claim 5, characterized in that: The exhaust hole (9) is a triangular exhaust hole, and the side length of the triangular exhaust hole is ≥15 mm.
7. The combined column for steel structure portal support according to any one of claims 1 to 4, characterized in that: The thickness of the stiffening plate (4) is ≥10 mm.
8. The combined column for steel structure portal support according to any one of claims 1 to 4, characterized in that: The distance between two adjacent stiffening plates (4) along the height direction of the door column (1) is 1500 mm to 2000 mm.
9. The combined column for steel structure portal support according to any one of claims 1 to 4, characterized in that: The weld foot height of the intermittent fillet weld (3) is ≥10 mm, the length L of the intermittent fillet weld (3) is 100 mm to 120 mm, and the spacing between two adjacent intermittent fillet welds (3) is 100 mm to 120 mm.
10. The combined column for steel structure portal support according to any one of claims 1 to 4, characterized in that: The weld foot height of the circumferential fillet weld (5) is ≥8mm.