A y-shaped split column and a method for processing the same

Abstract

The present application relates to a Y-shaped bifurcated pipe column, which is Y-shaped as a whole and comprises a lower elliptical column, a bifurcated enlarged transition section, a one-column-two-column node, a round-square conversion node and an upper standard circular pipe column from bottom to top; the bottom elliptical column is divided into two standard circular pipe columns through the above-mentioned different section conversion from bottom to top. The node force transmission path is clear, the steel plate is used for manufacturing, the manufacturing cost is low, and the manufacturing method is provided to ensure the implementation.

Description

Technical Field

[0001] This invention relates to the design of vertical structural nodes in steel structures and the field of complex steel structure nodes, specifically to a Y-shaped bifurcated column and its processing method. Background Technology

[0002] With the rapid development of steel structures, the requirements for building facade design are becoming increasingly stringent. Steel structure bifurcated columns can be made into various forms to fit the building surface. At the same time, thanks to the excellent vertical space expansion capability of bifurcated columns, the space utilization rate is effectively improved, and they are increasingly being used in large public buildings.

[0003] The existing bifurcated column connection nodes mainly adopt the following two forms: 1. The column section bifurcation is achieved by using two intersecting pipes or setting insert plates and welding the two pipes to the insert plates. The connection is made in the form of intersecting welds. Due to the connection form, the force transmission path of the node is unclear, which leads to the selection of an excessively large column section and waste of resources. At the same time, the node force mainly relies on the weld connection. When the node is subjected to large forces and the length of the intersecting weld is long, the weld quality requirements are high.

[0004] 2. The use of cast steel components to solve the problem of fabricating irregular parts at column bifurcation positions is economical when the column cross-section and plate thickness are small. However, when the node is subjected to large forces, considering the poor mechanical properties of cast steel components, the thickness of cast steel plates is often taken as twice the design value, resulting in high costs. At the same time, the fabrication time is doubled compared to traditional steel plates, resulting in poor economic benefits and sometimes difficulty in meeting the on-site construction schedule. Summary of the Invention

[0005] This invention aims to overcome the shortcomings of the prior art and provide a Y-shaped bifurcated column and its processing method, solving the problems of poor node connection process, unclear node force transmission path, and high manufacturing cost.

[0006] To solve the above-mentioned technical problems, the present invention is implemented as follows: A Y-shaped bifurcated column is characterized in that: it is Y-shaped in general, and from bottom to top includes a lower elliptical column, a bifurcation and expansion transition section, a column splitting into two columns node, a round-to-square conversion node, and an upper standard circular column; from bottom to top, through the above-mentioned different cross-sectional transformations, the bottom elliptical column is divided into two standard circular columns.

[0007] The Y-shaped bifurcated column is characterized in that: the Y-shaped bifurcated column is spliced ​​from steel plates, and the center of the two standard circular columns in each section always coincides with the two foci of the elliptical column, and the load of the two upper circular columns is clearly transferred to the lower elliptical column.

[0008] The Y-shaped bifurcated column is characterized in that: the bifurcation expansion transition section is the starting point of the column bifurcation, and is composed of a column wall panel and internal stiffening support. The internal stiffening support includes a vertical partition, circumferential stiffening plates on both sides of the vertical partition, and a vertical stiffening plate connecting the circumferential stiffening plates; an additional inner ring plate stiffening plate is also provided at the bottom corner of the bifurcation expansion transition section.

[0009] The Y-shaped bifurcated column is characterized in that: the column is divided into two column nodes, and the cross-section is changed from an elliptical cross-section to two saddle-shaped cross-sections, including a Y-shaped steel plate welded component located in the middle, annular stiffening plates on both sides of the Y-shaped steel plate welded component, and a column wall plate located outside the annular stiffening plates.

[0010] The Y-shaped bifurcated pipe column is characterized in that: the Y-shaped steel plate welded component is welded from four steel plates, wherein there are two first steel plates P1 forming a Y shape, the first steel plate P1 and the third steel plate P3 have the same thickness, the second steel plate P2 has twice the thickness of the first steel plate P1, the first steel plate P1 and the second steel plate P2, and the third steel plate P3 and the second steel plate P2 are connected by equal strength welding, and the third steel plate P3 is connected by equal strength welding to the vertical partition of the lower bifurcated expansion transition section.

[0011] The Y-shaped bifurcated column is characterized in that: the cross-section of the top-round-to-bottom transition node is changed from a saddle-shaped cross-section to a standard circular cross-section. The lower part of the node is completed by a half-top-round-to-bottom plate and a half-circular wall plate to complete the column cross-section conversion, and the upper part is a full-circular wall plate. The node is internally equipped with circumferential stiffening plates and vertical stiffening plates to stabilize it.

[0012] The Y-shaped bifurcated column is characterized in that: the round top and square bottom plate is formed by welding two arc plates and three flat plates of equal strength.

[0013] The method for processing a Y-shaped bifurcated tube column is characterized by comprising the following steps: 1. Fabricate the bifurcated pipe column assembly jig. Cut a semi-circular template according to the outer diameter R of the round pipe column. The template thickness should be 0.5 times the pipe column wall thickness and not less than 14mm, and the width should not be less than 200mm. The processing error of the semi-circular template should be controlled within 1mm. The pipe column assembly jig consists of crossbeams at both ends, vertical uprights, semi-circular templates and connecting rods. The components of the jig are connected by welding. Adjust the number of semi-circular templates according to the length of the pipe column. Note that the templates should be set in a position that is staggered from the transverse butt weld of the pipe column. 2. Construct a column that splits into two columns and a transition node between the round top and square bottom. The combined node is divided into two main parts, A and B, which are prefabricated separately and then assembled and welded together to facilitate control of the overall dimensions. Part A Production: Step a: Construct irregularly shaped H-beam steel columns on the ground; Step b: Weld the upper column wall panel at the bifurcation point with equal strength; Step c: Assemble the ring plate and vertical stiffening plate; Step d: Roll up the semi-circular plate and place it on a standard assembly jig to inspect and adjust its roundness and dimensions; Step e: After the semi-circular plate has been inspected, assemble it with the H-shaped steel column; Step f: After assembly, place the assembly on the jig, weld the internal stiffening plates, and verify the dimensions; Step g: Assemble the round-top and square-bottom semi-circular tubes, the round tubes, and the inner ring plates of the nodes; Step h: Assemble a half-round, half-square plate; Step i: Assemble the inner ring plate of the other half of the bifurcated column to provide a support point for the final assembly. Part A is now complete. Part B Production: Step j: Complete the assembly of the semi-circular tube, the round tube, and the inner ring plate of the node following the same steps as in Part A; Step k: Assemble half of the top-round-and-bottom plate. Part B is now complete. Complete the positioning and welding of the assembly positions. Step 1: Assemble parts A and B on the assembly jig, verify that the dimensions are correct, and then complete the welding of the connecting seams; III. The processing flow for creating the forked expansion transition section is as follows: Step m: Construct irregularly shaped H-beam steel columns on the ground; Step n: Roll up the semi-circular plate and place it on a standard jig to inspect and adjust its roundness and dimensions; Step o: Assemble the inner ring plate and vertical stiffening plate inside the tubing column; Step p: Assemble the H-beam columns; Step q: Assemble the inner ring plate and vertical stiffening plate of the other half of the tubular column; Step r: Roll the other half of the semicircular plate, assemble after dimensional verification, complete the overall assembly and verification, and complete the welding of the seam. The bifurcation expansion transition section is completed. IV. The upper standard round tube column and the lower elliptical column can be made using a standard jig in a similar manner. After each section is made, the parts are pre-assembled in the processing plant. The overall length, bifurcation point position, angle of the inclined column and the distance between the two columns after bifurcation are checked. After passing the inspection, anti-corrosion paint is sprayed to complete the bifurcation column production.

[0014] The beneficial effects of this invention are as follows: As can be seen from the above technical solution, this application provides a Y-shaped bifurcated column and its processing method. Compared with conventional intersecting column bifurcated nodes, this invention has a clear force transmission path. By adjusting the column cross-section and plate thickness, it can bear different degrees of load. At the same time, this node is assembled and welded using steel plates, avoiding the use of cast steel process, reducing node manufacturing costs and processing cycle, saving project costs and speeding up project schedule. The processing adopts the method of block prefabrication, overall segmented welding, and pre-assembly before installation. Standard assembly jigs are used to verify and check the dimensions to ensure the overall processing accuracy of the Y-shaped bifurcated column. Attached Figure Description

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the structure of this application; Figure 2 This is a diagram showing the breakdown of the diagram; Figure 3 This is a schematic diagram of the bifurcation and expansion transition section; Figure 4 A schematic diagram of a node where one column is divided into two columns; Figure 5 This is a schematic diagram of the transition from a round heaven to a square earth. Figure 6 This is a schematic diagram of a square with a round top and a square bottom. Figure 7 Schematic diagram of the assembly frame for the bifurcated pipe column; Figure 8 To create a schematic diagram of the node for the transformation from one pillar to two pillars and from a round heaven to a square earth; Figure 9 for Figure 8 Assembly diagram of the two main parts, A and B; Figure 10 A schematic diagram of the processing flow for creating the forked expansion transition section; Figure 11 This is a schematic diagram of the overall assembly. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection claimed in this application. like Figure 1 As shown: A Y-shaped bifurcated tubular column, the overall shape of which is Y-shaped, as shown... Figure 2From bottom to top, it includes a lower elliptical cylinder 1, a bifurcated and expanded transition section 2, a one-column-two-column node 3, a round-to-square conversion node 4, and an upper standard circular tube column 5; from bottom to top, through the above-mentioned different cross-sectional transformations, the elliptical cylinder at the bottom is divided into two standard circular tube columns.

[0017] The Y-shaped bifurcated column is made of steel plates. The center of the two standard circular columns in each section always coincides with the two foci of the elliptical column, and the load of the two upper circular columns is clearly transferred to the lower elliptical column.

[0018] The aforementioned bifurcation expansion transition section is the starting point of the column bifurcation, such as... Figure 3 The whole is composed of tubular wall panels and internal stiffening supports. The internal stiffening supports include vertical partitions, circumferential stiffening plates on both sides of the vertical partitions, and vertical stiffening plates connecting the circumferential stiffening plates; an additional inner ring plate stiffening plate is also provided at the bottom corner of the bifurcation expansion transition section.

[0019] The internal stiffening support consists of vertical diaphragms, circumferential and vertical stiffening plates. The vertical diaphragms divide the interior of the column into two chambers and are also the main force transmission plates at the upper bifurcation position. The circumferential and vertical stiffening plates stabilize and reinforce the vertical diaphragms and wall panels. Additional circumferential stiffening is added at the bottom corner of the column to resist the horizontal force of the inclined column.

[0020] The lower part of the column, which splits into two, connects to the bifurcation and widening transition section. The cross-section changes from an elliptical section to two saddle-shaped sections. It consists of column wall panels, Y-shaped steel plate welded components, and inner ring stiffening plates at the bifurcation position and top. Figure 4 The Y-shaped steel plate welded component is made of 4 steel plates. The first steel plate P1 and the third steel plate P3 have the same thickness. The second steel plate P2 has twice the thickness of the first steel plate P1. The first steel plate P1 and the second steel plate P2, and the third steel plate P3 and the second steel plate P2 are connected by equal strength welding. The third steel plate P3 is connected by equal strength welding to the vertical partition of the lower forked expansion transition section.

[0021] The lower part of the transition node between the round and square shapes is a single-column split node, where the cross-section changes from a saddle-shaped section to a standard circular section, as shown below. Figure 5 The lower part of the node uses a semi-circular square plate and a semi-circular wall plate to complete the column section transition, while the upper part is a full circular wall plate. Internally, circumferential and vertical stiffening plates are installed to stabilize the node. The semi-circular square plate is welded together from two curved plates and three flat plates of equal strength. Figure 6 .

[0022] A method for processing a Y-shaped bifurcated tubular column, characterized by comprising the following steps: 1. Fabricate a bifurcated pipe column assembly jig, such as Figure 7The semi-circular template is cut according to the outer diameter R of the cylindrical pipe. The thickness of the template should be 0.5 times the wall thickness of the pipe and not less than 14mm, and the width should not be less than 200mm. The processing error of the semi-circular template should be controlled within 1mm to achieve the effect of controlling the size. The pipe assembly jig consists of crossbeams at both ends, vertical uprights, semi-circular templates and connecting rods. The components of the jig are connected by welding. The number of semi-circular templates can be adjusted according to the length of the pipe. Note that the templates should be set at a position that is staggered from the transverse butt weld of the pipe.

[0023] II. Constructing a single pillar divided into two pillars and a transition node between the celestial and terrestrial shapes, such as... Figure 8 The composite node is divided into two main parts, A and B, which are prefabricated separately and then assembled and welded together, making it easier to control the overall dimensions. Figure 9 : Part A Production: Step a: Construct irregularly shaped H-beam steel columns on the ground; Step b: Weld the upper column wall panel at the bifurcation point with equal strength; Step c: Assemble the ring plate and vertical stiffening plate; Step d: Roll up the semi-circular plate and place it on a standard assembly jig to inspect and adjust its roundness and dimensions; Step e: After the semi-circular plate has been inspected, assemble it with the H-shaped steel column; Step f: After assembly, place the assembly on the jig, weld the internal stiffening plates, and verify the dimensions; Step g: Assemble the round-top and square-bottom semi-circular tubes, the round tubes, and the inner ring plates of the nodes; Step h: Assemble the half-heavenly and half-earthly plate Step i: Assemble the inner ring plate of the other half of the bifurcated column to provide a support point for the final assembly. Part A is now complete.

[0024] Part B Production: Step j: Complete the assembly of the semi-circular tube, the round tube, and the inner ring plate of the node following the same steps as in Part A; Step k: Assemble half of the top-round-and-bottom plate. Part B is now complete. Complete the positioning and welding of the assembly positions. Step 1: Assemble parts A and B on the assembly jig, verify that the dimensions are correct, and then complete the welding of the connecting seams; III. The processing flow for creating the forked expansion transition section is as follows: Figure 10 : Step m: Construct irregularly shaped H-beam steel columns on the ground; Step n: Roll up the semi-circular plate and place it on a standard jig to inspect and adjust its roundness and dimensions; Step o: Assemble the inner ring plate and vertical stiffening plate inside the tubing column; Step p: Assemble the H-beam columns; Step q: Assemble the inner ring plate and vertical stiffening plate of the other half of the tubular column; Step r: Roll the other half of the semicircular plate, assemble after dimensional verification, complete the overall assembly and verification, and complete the welding of the seam. The bifurcation expansion transition section is completed. IV. The upper standard circular column and the lower elliptical column can be manufactured using a standard jig following similar steps. After each section is manufactured, they can be pre-assembled in the processing plant, such as... Figure 11 Check the overall dimensions, such as the length, the location of the bifurcation point, the angle of the inclined column, and the distance between the two columns after the bifurcation. After the inspection is qualified, spray anti-corrosion paint to complete the production of the bifurcation column.

[0025] The above are merely embodiments provided in this application and are not intended to limit this application. Although this application has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A Y-shaped bifurcated tubular column, characterized in that: Its overall shape is Y-shaped, and from bottom to top it includes a lower elliptical cylinder, a bifurcation and expansion transition section, a one-column-two-column node, a round-to-square conversion node and an upper standard circular tube column; from bottom to top, through the above-mentioned different cross-sectional transformations, the elliptical cylinder at the bottom is divided into two standard circular tube columns; Y-shaped bifurcated columns are made of steel plates spliced ​​together. The centers of the two standard circular columns in each section always coincide with the two foci of the elliptical column. The load of the two upper circular columns is clearly transferred to the lower elliptical column. The aforementioned column-to-two node has its cross-section transformed from an elliptical cross-section to two saddle-shaped cross-sections, including a Y-shaped steel plate welded component located in the middle, annular stiffening plates on both sides of the Y-shaped steel plate welded component, and a column wall plate located outside the annular stiffening plates.

2. The Y-shaped bifurcated tubular column according to claim 1, characterized in that: The Y-shaped steel plate welded component is made of four steel plates. There are two first steel plates P1, forming a Y shape. The first steel plate P1 and the third steel plate P3 have the same thickness. The thickness of the second steel plate P2 is twice that of the first steel plate P1. The first steel plate P1 and the second steel plate P2, and the third steel plate P3 and the second steel plate P2 are connected by equal-strength welding. The third steel plate P3 is connected by equal-strength welding to the vertical partition of the lower forked expansion transition section.

3. The Y-shaped bifurcated tubular column according to claim 1, characterized in that: The aforementioned bifurcation expansion transition section is the starting point of the column bifurcation. It is composed of a column wall panel and internal stiffening support. The internal stiffening support includes a vertical partition, circumferential stiffening plates on both sides of the vertical partition, and a vertical stiffening plate connecting the circumferential stiffening plates. An additional inner ring plate stiffening plate is also provided at the bottom corner of the bifurcation expansion transition section.

4. The Y-shaped bifurcated tubular column according to claim 1, characterized in that: The aforementioned round-to-square conversion node transforms the cross-section from a saddle-shaped section to a standard circular section. The lower part of the node is completed by a half-round-to-square plate and a semi-circular wall plate to complete the column cross-section transformation, while the upper part is a full-circular wall plate. The node is stabilized by circumferential stiffening plates and vertical stiffening plates inside.

5. A Y-shaped bifurcated tubular column according to claim 4, characterized in that: The aforementioned round-and-square plate is made of two arc plates and three flat plates welded together with equal strength.

6. The processing method of a Y-shaped bifurcated column according to claim 1, characterized in that... It includes the following steps:

1. Fabricate the bifurcated pipe column assembly jig. Cut a semi-circular template according to the outer diameter R of the round pipe column. The template thickness should be 0.5 times the pipe column wall thickness and not less than 14mm, and the width should not be less than 200mm. The processing error of the semi-circular template should be controlled within 1mm. The pipe column assembly jig consists of crossbeams at both ends, vertical uprights, semi-circular templates and connecting rods. The components of the jig are connected by welding. Adjust the number of semi-circular templates according to the length of the pipe column. Note that the templates should be set in a position that is staggered from the transverse butt weld of the pipe column.

2. Construct a column that splits into two columns and a transition node between the round top and square bottom. The combined node is divided into two main parts, A and B, which are prefabricated separately and then assembled and welded together to facilitate control of the overall dimensions. Part A Production: Step a: Construct irregularly shaped H-beam steel columns on the ground; Step b: Weld the upper column wall panel at the bifurcation point with equal strength; Step c: Assemble the ring plate and vertical stiffening plate; Step d: Roll up the semi-circular plate and place it on a standard assembly jig to inspect and adjust its roundness and dimensions; Step e: After the semi-circular plate has been inspected, assemble it with the H-shaped steel column; Step f: After assembly, place the assembly on the jig, weld the internal stiffening plates, and verify the dimensions; Step g: Assemble the round-top and square-bottom semi-circular tubes, the round tubes, and the inner ring plates of the nodes; Step h: Assemble a half-round, half-square plate; Step i: Assemble the inner ring plate of the other half of the bifurcated column to provide a support point for the final assembly. Part A is now complete. Part B Production: Step j: Complete the assembly of the semi-circular tube, the round tube, and the inner ring plate of the node following the same steps as in Part A; Step k: Assemble half of the top-round-and-bottom plate. Part B is now complete. Complete the positioning and welding of the assembly positions. Step 1: Assemble parts A and B on the assembly jig, verify that the dimensions are correct, and then complete the welding of the connecting seams; III. The processing flow for creating the forked expansion transition section is as follows: Step m: Construct irregularly shaped H-beam steel columns on the ground; Step n: Roll up the semi-circular plate and place it on a standard jig to inspect and adjust its roundness and dimensions; Step o: Assemble the inner ring plate and vertical stiffening plate inside the tubing column; Step p: Assemble the H-beam columns; Step q: Assemble the inner ring plate and vertical stiffening plate of the other half of the tubular column; Step r: Roll the other half of the semicircular plate, assemble after dimensional verification, complete the overall assembly and verification, and complete the welding of the seam. The bifurcation expansion transition section is completed. IV. The upper standard round tube column and the lower elliptical column can be made using a standard jig in a similar manner. After each section is made, the parts are pre-assembled in the processing plant. The overall length, bifurcation point position, angle of the inclined column and the distance between the two columns after bifurcation are checked. After passing the inspection, anti-corrosion paint is sprayed to complete the bifurcation column production.

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