Multi-pipe combined steel column base

Abstract

The utility model relates to a multi-pipe combined steel column base which comprises three steel branch pipes, each steel branch pipe comprises a supporting section and a branch section, the three supporting sections are parallel to one another and distributed in a regular triangle shape, the lengths of the three supporting sections are the same, the two ends of the three supporting sections are flush, the axes of the three branch sections intersect at one point, and in-pipe concrete is poured in the supporting sections; every two adjacent supporting sections are connected through a separation steel plate. A shape-finding decorative steel plate is arranged between every two adjacent supporting sections, a cavity is defined by the three shape-finding decorative steel plates and the three supporting sections, and the partition steel plate is located in the cavity. Inter-limb sealing plates are arranged among the three limb sections, and the inter-limb sealing plates are connected with the three limb sections and the three shape-finding decorative steel plates, so that one end of the cavity is sealed. The whole steel column base is formed by welding and connecting the steel pipes, complex space intersection joints are simplified and decomposed into binding connection of the three bent steel pipes, the manufacturing method is simple, the welding difficulty is low, use of cast steel joints can be avoided, and good economical efficiency is embodied.

Description

Technical Field

[0001] The utility model relates to the field of building steel structures, in particular to a multi-tube combined steel column foot. Background Art

[0002] The design of key steel nodes is an important part of steel structure design. The production and process of steel nodes have a great impact on the entire design and construction. As the fulcrum of the entire structural system, the weight of steel column base in the design of steel nodes is self-evident.

[0003] At present, for the design of steel column bases with complex stress conditions and multiple tubes converging at one point, in order to avoid the shortcomings of large residual stress and complex construction caused by ordinary welding, cast steel nodes are increasingly used in the design of complex steel column bases because of their advantages such as one-time forming, good integrity and convenient processing.

[0004] However, there is no mature design method for cast steel nodes, and the construction and design of cast steel are complicated, with a long manufacturing cycle and high cost. Therefore, for some steel structure design projects, the use of simple and effective steel column foot nodes to avoid the use of cast steel nodes can shorten the project cycle to a certain extent, reduce the cost of the entire project, and reflect good economic efficiency. Utility Model Content

[0005] Based on the above description, the utility model provides a multi-tube composite steel column base, which can be used in some scenarios to avoid the use of cast steel nodes.

[0006] The technical solution of the utility model to solve the above technical problems is as follows:

[0007] The present application provides a multi-tube combined steel column base, and the technical solution adopted is as follows:

[0008] A multi-tube combined steel column foot, comprising three steel branched tubes, wherein the steel branched tubes comprise a support section and a branch section, wherein the angle formed by the support section and the branch section is an obtuse angle greater than 150°, wherein the three support sections are parallel to each other and are distributed in a regular triangle, wherein the three support sections have the same length and both ends are flush, wherein the three branch sections are located at the same end of the three support sections, wherein any branch section extends in a direction away from a plane formed by axes of the other two support sections, and the axes of the three branch sections intersect at one point, wherein concrete is poured in the support section;

[0009] Two adjacent support segments are connected by a partition steel plate, the plane of the partition steel plate is parallel to the axis of the support segment, and the two adjacent support segments are located on both sides of the partition steel plate;

[0010] A decorative steel plate is provided between two adjacent support segments, the decorative steel plate is located on a side of the two adjacent support segments away from the other support segment, and the decorative steel plate connects the two adjacent support segments and covers the gap between the two adjacent support segments, three decorative steel plates and three support segments enclose a cavity, the cavity is connected along the axial ends of the support segments, and the partition steel plate is located in the cavity;

[0011] An inter-limb sealing plate is provided between the three limb segments, the plane of the inter-limb sealing plate is perpendicular to the axis of the supporting segment, and the inter-limb sealing plate is connected to the three limb segments and the three decorative steel plates to close one end of the cavity.

[0012] Preferably, the plane of the partition steel plate between two adjacent support segments is perpendicular to the plane formed by the axes of the two adjacent support segments, the three partition steel plates intersect in a straight line and are welded and fixed, and the angle between two adjacent partition steel plates is 120°.

[0013] Preferably, the concrete in the inner tube of the support section is poured throughout the entire support section.

[0014] Preferably, the decorative steel plate is in an arc shape and its axis is parallel to the axis of the supporting segment, and the convex side of the decorative steel plate faces the two supporting segments.

[0015] Preferably, the steel limb tube is a round steel tube.

[0016] Preferably, the steel limb pipe is a Q235B steel pipe or a Q355B steel pipe, and the partition steel plate, the decorative steel plate and the inter-limb sealing plate are all Q235B steel plates or Q355B steel plates.

[0017] Preferably, the strength grade of the concrete in the tube poured in the supporting section is C35~C60.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0019] The present application forms a steel column foot by connecting three steel branch tubes, and the three supporting sections of the three steel branch tubes are connected as a whole through a partition steel plate to form a branch tube combination section, which has sufficient structural strength to play a stable supporting role; pouring concrete in the tube in the supporting section can solve the problem of excessive stress at the mutual extrusion of the tube walls of the supporting section, and diffuse the normal stress generated by the extrusion between the tube walls to the concrete in the tube, so as to ensure that the strength of the normal stress meets the requirements; a cavity closed at one end is formed by the arrangement of a decorative steel plate and an inter-limb sealing plate, and the partition steel plate is accommodated therein, so that the branch tube combination section has a smooth shape to improve the aesthetics, and at the same time can protect the partition steel plate and the welding node with the supporting section; the steel column foot is formed by welding steel pipes as a whole, and the complex spatial intersection node is simplified and decomposed into a "binding" connection of three bent steel pipes. The manufacturing method is simple, the welding difficulty is relatively low, and the use of cast steel nodes is avoided, reflecting good economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of the structure of a multi-tube composite steel column foot provided in an embodiment of the utility model;

[0021] Figure 2 A schematic cross-sectional structure diagram of a multi-tube composite steel column foot provided in an embodiment of the utility model;

[0022] Figure 3 for Figure 2 Schematic diagram of the cross section along line AA.

[0023] 1. Steel branch pipe; 2. Support section; 3. Branch section; 4. Partition steel plate; 5. Decorative steel plate; 6. Concrete inside the pipe; 7. Sealing plate between limbs; La, branch pipe combination section; Lb, branch pipe bifurcation section. DETAILED DESCRIPTION

[0024] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0026] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0027] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element, or connected to the other element through an intermediate element. The "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0028] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0029] Reference Figure 1-3 As shown, an embodiment of the present application provides a multi-tube composite steel column base, which includes three steel branch tubes 1, the steel branch tube 1 includes a support segment 2 and a branch segment 3, the angle formed by the support segment 2 and the branch segment 3 is an obtuse angle greater than 150°, the three support segments 2 are parallel to each other and distributed in a regular triangle, the three support segments 2 are of the same length and flush at both ends, the three branch segments 3 are located at the same end of the three support segments 2, any branch segment 3 extends in a direction away from the plane formed by the axes of the other two support segments 2, and the axes of the three branch segments 3 intersect at one point, and the support segment 2 is poured with in-tube concrete 6.

[0030] Reference Figure 1-3As shown, specifically, three round steel tubes whose axes intersect at one point in space are bent at the intersection to form parallel support sections 2, and the three support sections 2 are distributed in a regular triangle to form the basic structure of the multi-tube combined steel column foot of this embodiment. The angles formed by the support sections 2 and the branch sections 3 of the three steel branch tubes 1 can be the same or different, and the angles formed by the three branch sections 3 can be the same or different, and are designed according to specific needs. The bending structure of the steel branch tube 1 can be achieved by cutting and then welding.

[0031] Reference Figure 1-3 As shown, in order to connect the three support segments 2 to form a whole, two adjacent support segments 2 are connected by a partition steel plate 4, the plane of the partition steel plate 4 is parallel to the axis of the support segment 2, and the two adjacent support segments 2 are located on both sides of the partition steel plate 4. Specifically, the plane of the partition steel plate 4 between the two adjacent support segments 2 is perpendicular to the plane formed by the axes of the two adjacent support segments 2, the three partition steel plates 4 intersect in a straight line and are welded and fixed, and the angle between the two adjacent partition steel plates 4 is 120°. The interval between the adjacent support segments 2 is consistent with the thickness of the partition steel plate 4, and the partition steel plate 4 and the two adjacent support segments 2 are welded and fixed. During processing, the three partition steel plates 4 are welded and fixed to form a combined steel plate, and then the three support segments 2 are arranged between the two adjacent partition steel plates 4 and are welded and fixed to the partition steel plates 4. The three partition steel plates 4 and the three support segments 2 form a branch tube combined segment La, and the three branch segments 3 form a branch tube bifurcation segment Lb.

[0032] Reference Figure 1-3 As shown, further, in order to improve the structural strength of the support section 2, in-tube concrete 6 is poured in the support section 2, and the pouring range of the in-tube concrete 6 is the entire support section 2. Pouring in-tube concrete 6 in the support section 2 can solve the excessive stress at the mutual squeezing point of the tube walls of the support section 2, and diffuse the normal stress generated by the squeezing between the tube walls to the in-tube concrete 6, thereby ensuring that the strength of the support section 2 and the entire steel branch tube 1 meets the requirements.

[0033] Reference Figure 1-3As shown, further, a decorative steel plate 5 is provided between two adjacent support segments 2, and the decorative steel plate 5 is located on the side of the two adjacent support segments 2 away from the other support segment 2, and the decorative steel plate 5 connects the two adjacent support segments 2 and covers the gap between the two adjacent support segments 2, and the three decorative steel plates 5 and the three support segments 2 enclose a cavity, and the cavity is penetrated at both ends along the axial direction of the support segment 2, and the partition steel plate 4 is located in the cavity. Specifically, the decorative steel plate 5 is in an arc shape and the axis is parallel to the axis of the support segment 2, the convex side of the decorative steel plate 5 faces the two support segments 2, and the axial length of the decorative steel plate 5 is consistent with the axial length of the support segment 2. When the decorative steel plate 5 connects the two adjacent support segments 2, it covers the gap between the two adjacent support segments 2, that is, covers the partition steel plate 4 inside, and the three decorative steel plates 5 and the three support segments 2 are connected to form a cavity that accommodates the three partition steel plates 4, so that the entire limb tube combination segment La has a smooth appearance.

[0034] Reference Figure 1-3 As shown, further, an interlimb sealing plate 7 is provided between the three limb sections 3, the plane of the interlimb sealing plate 7 is perpendicular to the axis of the support section 2, and the interlimb sealing plate 7 is connected to the three limb sections 3 and the three decorative steel plates 5 to close one end of the cavity. Since the axis of the support section 2 is vertical and the limb section 3 is located above the support section 2 in the use state, the lower end of the support section 2 is fixed on the foundation to close the lower end of the cavity, therefore, the interlimb sealing plate 7 is provided to close the upper end of the cavity, so that the entire cavity can be closed, the internal welding points and the partition steel plate 4 can be protected, and the appearance of the steel column foot is more beautiful.

[0035] Specifically, the steel branch pipe 1, the partition steel plate 4, the decorative steel plate 5 and the inter-limb sealing plate 7 are all made of Q235B steel or Q355B steel. Appropriate welding materials, welding methods and welding processes are selected according to the welding parent material, welding position and weld type, and comply with corresponding welding standards. The steel plate thickness, weld leg size, etc. are selected according to the design calculation needs; the inner pipe concrete 6 poured in the support section 2 can be of C35~C60 grade concrete.

[0036] For some steel structure design projects, the simple and effective use of multi-tube composite steel column foot nodes in this embodiment avoids the use of cast steel nodes, can shorten the project period to a certain extent, reduce the cost of the entire project, and can reflect good economic efficiency.

[0037] Example

[0038] The steel branch pipe 1 has an outer diameter of 550 mm and a wall thickness of 40 mm. The three steel branch pipes 1 are bent respectively. After bending, the angles between the support section 2 and the branch section 3 in the three steel branch pipes 1 are 175°, 156° and 159° respectively. The length of the support section 2 is 1500 mm. The combined steel plate is composed of three partition steel plates 4 (specifications 1500 mm×330 mm×30 mm). It intersects at one point with an angle of 120° and is welded with a full penetration weld. After welding, the combined steel plate divides the three parallel support sections 2 into a regular triangle distribution, and a single-sided fillet weld is used at the contact between the dividing steel plate 4 and the support section 2, with a weld foot size of 25mm; concrete 6 is poured into the three support sections 2 of the three steel branch pipes 1, and the concrete grade is C50, and the pouring range is the entire branch pipe combination section La; the decorative steel plate 5 has a specification of 1500mm×400mm×8mm, is pre-pressed into an arc with a radius of 610mm, and is welded between the outer walls of two adjacent support sections 2 on the branch pipe combination section La by a fillet weld, with a weld foot size of 8mm; the inter-limb sealing plate 7 uses a steel plate with a wall thickness of 6mm, is welded between each branch section 3 by a fillet weld, and is welded to the end of the decorative steel plate 5 into a whole, with a weld foot size of 6mm. The above steel plates are made of Q355B, manual arc welding uses E50 electrodes, electroslag welding with consumable nozzles uses H08MnMoA, and automatic and semi-automatic submerged arc welding uses H08A, H08E welding wires with high manganese flux. It can better meet the design requirements.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-tube combined steel column base, characterized in that: The invention comprises three steel branch tubes (1), wherein the steel branch tubes (1) comprise a support section (2) and a branch section (3), wherein the angle formed by the support section (2) and the branch section (3) is an obtuse angle greater than 150°, the three support sections (2) are parallel to each other and are distributed in a regular triangle, the three support sections (2) are of the same length and have both ends flush, the three branch sections (3) are located at the same end of the three support sections (2), any branch section (3) extends in a direction away from a plane formed by the axes of the other two support sections (2), and the axes of the three branch sections (3) intersect at one point, and the support section (2) is poured with tube concrete (6); Two adjacent support segments (2) are connected by a partition steel plate (4), the plane of the partition steel plate (4) is parallel to the axis of the support segment (2), and the two adjacent support segments (2) are located on both sides of the partition steel plate (4); A decorative steel plate (5) is provided between two adjacent support segments (2). The decorative steel plate (5) is located on a side of the two adjacent support segments (2) away from the other support segment (2), and the decorative steel plate (5) connects the two adjacent support segments (2) and covers the gap between the two adjacent support segments (2). The decorative steel plate (5) is in an arc shape and its axis is parallel to the axis of the support segment (2). The convex side of the decorative steel plate (5) faces the two support segments (2). The three decorative steel plates (5) and the three support segments (2) enclose a cavity, and the cavity is connected at both ends along the axial direction of the support segment (2). The partition steel plate (4) is located in the cavity. An inter-limb sealing plate (7) is provided between the three limb segments (3), the plane of the inter-limb sealing plate (7) is perpendicular to the axis of the support segment (2), and the inter-limb sealing plate (7) is connected to the three limb segments (3) and the three decorative steel plates (5) to close one end of the cavity.

2. The multi-tube composite steel column base according to claim 1, characterized in that: The plane of the partition steel plate (4) between two adjacent support segments (2) is perpendicular to the plane formed by the axes of the two adjacent support segments (2), the three partition steel plates (4) intersect in a straight line and are welded and fixed, and the angle between two adjacent partition steel plates (4) is 120°.

3. The multi-tube composite steel column base according to claim 1, characterized in that: Concrete (6) in the inner tube of the support section (2) is poured throughout the entire support section (2).

4. The multi-tube composite steel column base according to claim 1, characterized in that: The steel branch pipe (1) is a round steel pipe.

5. The multi-tube composite steel column base according to claim 1, characterized in that: The steel limb pipe (1) is a Q235B steel pipe or a Q355B steel pipe, and the partition steel plate (4), the decorative steel plate (5) and the inter-limb sealing plate (7) are all Q235B steel plates or Q355B steel plates.

6. The multi-tube composite steel column base according to claim 1, characterized in that: The strength grade of the in-tube concrete (6) poured in the support section (2) is C35-C60.

Images