A hyperbolic steel cold tower model generation method

Abstract

The application relates to the technical field of steel structure design, and discloses a hyperbolic steel cold tower model generation method, which comprises the following steps: determining a generatrix equation of the hyperbolic steel cold tower shape; determining inner layer main truss nodes and outer layer main truss nodes in a numerical and geometrical combination mode; determining steel cold tower body members in the numerical and geometrical combination mode, and then obtaining a tower body model; determining a widening platform member of the hyperbolic steel cold tower in the numerical and geometrical combination mode; and determining a reinforcing ring member of the hyperbolic steel cold tower in the numerical and geometrical combination mode. According to the technical scheme, nodes and members of the hyperbolic steel cold tower model can be simply, quickly and conveniently generated by using the numerical and geometrical combination mode, the design speed is significantly improved, the design period is significantly shortened, the design efficiency is significantly improved, the time cost and the labor cost are significantly reduced, and subsequent design optimization work can be further carried out.

Description

Technical Field

[0001] This invention relates to the field of steel structure design technology, specifically to a method for generating a hyperbolic steel cold tower model. Background Technology

[0002] Due to the significant water-saving advantages of indirect air-cooled tower systems using natural ventilation, they are widely used in thermal power plants in coal-rich but water-scarce regions. Traditional indirect air-cooled tower systems typically use reinforced concrete structures; however, most existing air-cooled towers utilize a new type of hyperbolic steel structure, referred to as hyperbolic steel cooling towers. Because hyperbolic steel cooling towers offer advantages such as modular design and readily recyclable materials, they provide high overall benefits throughout their lifecycle and are gradually becoming the mainstream choice in the industrial sector.

[0003] Although hyperbolic rigid cooling towers have the above advantages, the design process typically uses CAD software with a point-line modeling approach, which is not only time-consuming and labor-intensive but also prone to errors. The time-consuming preliminary design work for hyperbolic rigid cooling tower projects significantly extends the design cycle. Summary of the Invention

[0004] In view of this, the present invention provides an improved method for generating hyperbolic steel cooling tower models to solve the problem that in the current process of designing hyperbolic steel cooling towers, the modeling method using a point-line general approach in CAD software is not only time-consuming and labor-intensive, but also prone to errors; and because the preliminary design work of hyperbolic steel cooling tower projects is very time-consuming, it significantly prolongs the design cycle of hyperbolic steel cooling towers.

[0005] This invention provides a method for generating a hyperbolic steel cooling tower model, comprising: Determine the generatrix equation of the hyperbolic steel cooling tower shape; The inner and outer main truss nodes are determined by combining numerical and graphical methods. By combining numerical and graphical methods, the tower body components of the steel cooling tower are determined, thereby obtaining the tower body model; The expansion platform members of the hyperbolic steel cold tower are determined by combining numerical and graphical methods; The reinforcing ring members of a hyperbolic steel cooling tower are determined using a combination of numerical and graphical methods. Beneficial effects: This application adopts the above technical solution, proposing a novel method that utilizes a combination of numerical and graphical methods to simply, quickly, and conveniently generate the nodes and members of a hyperbolic steel cooling tower model. This significantly improves design speed, shortens the design period, and enhances design efficiency, while significantly reducing time and labor costs, facilitating further design optimization work.

[0006] Optionally, the generatrix equation for determining the shape of the hyperbolic steel cooling tower includes: According to the tower bottom diameter determined in the process specifications D 底 , throat diameter D 喉 Throat height H 喉 Air inlet diameter D 进 Air inlet height H 进 Tower top air outlet height H 出 and the diameter of the air outlet at the top of the tower D 出 The hyperbolic equation of the hyperbolic steel cooling tower is determined as shown in equation (1). (1) The generatrix of the hyperbolic steel cooling tower is a planar curve. Assuming that the generatrix of the hyperbolic steel cooling tower is located in the xz plane, let y=0 in the hyperbolic equation of the hyperbolic steel cooling tower. Based on the process data, the parameter a= in the hyperbolic equation of the hyperbolic steel cooling tower is obtained. D 底 / 2; The generatrix equation of the hyperbolic steel cooling tower is shown in equation (2). (2) Based on the determined height of the tower top air outlet H 出 and the diameter of the air outlet at the top of the tower D 出 The coordinates of the node at the top air outlet of the tower on the xz plane are determined as (x 出 , z 出 ), where x 出 = D 出 / 2,z 出 = H 出 The coordinates of the above nodes are (x... 出 , z 出 Substituting into equation (2), we obtain the parameter c in the hyperbolic equation of the hyperbolic steel cooling tower.

[0007] Optionally, determining the inner main truss nodes and outer main truss nodes using a combination of numerical and graphical methods includes: Based on the generatrix equation of the hyperbolic steel cooling tower, the zeroth floor point, with a bottom height of 0 meters on the generatrix of the hyperbolic steel cooling tower, is taken as the reference point. The coordinates are ( ,0,0); Based on the number n of hyperbolic circumferential mesh divisions, the above reference points are... By circumferentially arraying n terms from the origin O, we obtain all nodes of the zeroth layer mesh at a bottom height of 0 meters. The coordinates are ( , (,0), where n is a natural number, j It is an integer, and 1 ≤ j ≤n; Based on the number of layers in the tower body of the hyperbolic steel cold tower and the height of each layer, the coordinate value of the first layer reference point node along the z-axis is determined to be Z1. The reference point of the zeroth layer Translate Z1 upwards along the z-axis to form the initial first layer of reference point nodes; Rotate the initial first-layer reference point nodes around the central z-axis by an angle of 360 / (2n) to obtain the first-layer reference points. The coordinates are ( , (Z1) The above benchmark points Array n terms circumferentially from the origin O to obtain all nodes of the first layer of the mesh. The coordinates are ( , (Z1) By analogy, all outer main truss nodes can be obtained. coordinates ( , Z m ), where m is the number of the tower's layers, m is an integer, and m≥0; Based on the thickness of the hyperbolic circumferential mesh, all outer main truss nodes are radially offset by a distance d in the xy plane towards the center O, thus obtaining the nodes of the inner main truss of the hyperbolic steel cold tower. .

[0008] Optionally, the process of determining the tower body members of the steel cooling tower using a combination of numerical and graphical methods to obtain the tower body model includes: Determine the basic unit chord; Determine the basic unit, the diagonal web member; Determine the basic unit horizontal bar; Determine the basic unit triangular support element; The tower body members are arranged in a circumferential array of n terms along the z-axis centerline to obtain the tower body model.

[0009] Optionally, determining the basic unit chord includes: Connect the corresponding outer main truss nodes of two adjacent layers in sequence to form outer diagonal chord members; Connect the corresponding inner main truss nodes of two adjacent layers in sequence to form inner diagonal chords; Connect the adjacent outer main truss nodes on the same level in sequence to form the outer horizontal chord; Connect the adjacent inner main truss nodes on the same floor in sequence to form the inner horizontal chord members; The outer diagonal chord, inner diagonal chord, outer horizontal chord, and inner horizontal chord all belong to the basic unit chord.

[0010] Optionally, determining the basic unit diagonal web member includes: Divide the outer diagonal chord into four equal parts to obtain three initial division points; Divide the inner diagonal chord into four equal parts to obtain three second division points; Connect the corresponding outer main truss nodes, the first division point, the second division point, and the inner main truss nodes in sequence to obtain the basic unit diagonal web member.

[0011] Optionally, determining the basic unit horizontal bar includes: Connect the corresponding outer main truss nodes and inner main truss nodes on the same level to form basic unit horizontal bars.

[0012] Optionally, the determination of the basic unit triangular support unit rod includes: By connecting the bisection points of the two intersecting outer diagonal chord members and the bisection points of the outer horizontal chord member in sequence, the basic unit triangular support unit member is obtained. And by sequentially connecting and closing the bisection points of the two intersecting inner diagonal chord members and the bisection points of the inner horizontal chord member, the basic unit triangular support unit member is obtained.

[0013] Optionally, the method of determining the expansion platform members of the hyperbolic steel cold tower using a combination of numerical and graphical methods includes: According to the process specifications, the outer diameter R of the platform rods should be widened. Z and position height H Z ; Determine the tower floor level i where the elevation of the expansion platform member is located, where Z i-1 <H Z <Z i Z i-1 Z represents the position and height of the (i-1)th floor of the tower. i Let i be the height of the i-th tower layer; In H Z Within the plane of position and height, draw a circle with radius R centered at point (0,0). Z A circle with radius R ZThe circle is evenly divided into n arc segments, each arc segment forming a chord of the expansion platform, and the endpoint of each arc segment becoming a node of the expansion platform. The divided arc segments intersect with the outer diagonal chord of the i-th layer and coincide with the angle of the outer diagonal chord of the (i-1)-th layer. The nodes of the outer main truss of the i-th layer are connected to the nodes of the expansion platform to obtain the web members of the expansion platform. The nodes of the expansion platform chord are connected one by one to the nodes of the outer main truss of the (i-1)-th layer to obtain the struts of the expansion platform. The expansion platform chord, web members, and struts are all members of the expansion platform.

[0014] Optionally, the method of determining the reinforcing ring members of the hyperbolic steel cold tower using a combination of numerical and graphical methods includes: Based on the thickness r of the predetermined reinforcing ring member, the inner main truss node of the i-th layer is offset inward by a distance r, and all inner main truss nodes are rotated around the center by an angle of 360 / (2n) to obtain the reinforcing ring node; the reinforcing ring node is connected in sequence to obtain the reinforcing ring chord; the corresponding inner main truss node of the i-th layer is connected to the reinforcing ring node in sequence to obtain the reinforcing ring web member; the corresponding reinforcing ring node is connected to the inner main truss node of the (i-1)-th layer one by one to obtain the reinforcing ring strut; the reinforcing ring chord, reinforcing ring web member and reinforcing ring strut all belong to the reinforcing ring member. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a partial three-dimensional structural schematic diagram of the hyperbolic steel cooling tower model provided in the embodiments of the present invention; Figure 2 This is a schematic diagram of the busbar of the hyperbolic steel cooling tower provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of all nodes of the zeroth layer mesh provided in the embodiment of the present invention; Figure 4 This is a partial schematic diagram of the hyperbolic steel cooling tower model provided in the embodiments of the present invention. Figure 1 ; Figure 5 This is a schematic diagram showing the inner main truss node obtained by radial offset of the outer main truss node according to an embodiment of the present invention. Figure 6 This is a partial schematic diagram of the hyperbolic steel cooling tower model provided in the embodiments of the present invention. Figure 2 ; Figure 7 This is a partial schematic diagram of the hyperbolic steel cooling tower model provided in the embodiments of the present invention. Figure 3 ; Figure 8 This is a partial schematic diagram of the hyperbolic steel cooling tower model provided in the embodiments of the present invention. Figure 4 ; Figure 9 This is a schematic diagram of the tower body members arranged circumferentially along the z-axis centerline in an embodiment of the present invention. Figure 10 This is a schematic diagram of the tower body model provided in an embodiment of the present invention; Figure 11 This is a partial schematic diagram of the hyperbolic steel cooling tower model provided in the embodiments of the present invention. Figure 5 ; Figure 12 for Figure 11 A magnified view of a portion of the image; Figure 13 This is a partial schematic diagram of the hyperbolic steel cooling tower model provided in the embodiments of the present invention. Figure 6 ; Figure 14 This is a partial schematic diagram of the hyperbolic steel cooling tower model provided in the embodiments of the present invention. Figure 7 ; Figure 15 for Figure 14 A magnified view of a portion of the image; Figure 16 This is a partial schematic diagram of the hyperbolic steel cooling tower model provided in the embodiments of the present invention. Figure 8 ; Figure 17 This is a three-dimensional structural schematic diagram of the hyperbolic steel cooling tower model provided in the embodiments of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Outer layer diagonal chord; 2. Inner layer diagonal chord; 3. Outer layer horizontal chord; 4. Inner layer horizontal chord; 5. Basic unit chord; 6. Basic unit diagonal web member; 7. Basic unit horizontal member; 8. Widened platform member; 9. Widened platform chord; 10. Widened platform web member; 11. Widened platform strut; 12. Reinforcing ring member; 13. Reinforcing ring chord; 14. Reinforcing ring web member; 15. Reinforcing ring strut; 16. Basic unit triangular support unit member; 17. Tower model; 18. Widened platform; 19. Z-axis centerline. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1 to 17 A specific implementation of the method for generating a hyperbolic steel cooling tower model, as shown, includes the following steps: S1. Determine the generatrix equation of the hyperbolic steel cooling tower.

[0020] S2. Determine the inner main truss nodes and outer main truss nodes using a combination of numerical and graphical methods.

[0021] S3. Using a combination of numerical and graphical methods, determine the tower body members of the steel cooling tower, and then obtain the tower body model 17.

[0022] S4. Using a combination of numerical and graphical methods, determine the expansion platform member 8 of the hyperbolic steel cold tower.

[0023] S5. Using a combination of numerical and graphical methods, determine the reinforcing ring member 12 of the hyperbolic steel cold tower.

[0024] like Figure 1 The figure shown is a partial three-dimensional structural schematic diagram of the hyperbolic steel cooling tower model described in this application. Figure 17 This is a schematic diagram of the final hyperbolic steel cooling tower model, specifically a three-dimensional model of a double-layered, bidirectional oblique grid hyperbolic steel structure cooling tower. An extended platform 18 is located outside the tower body model 17. The hyperbolic steel cooling tower model described in this application can be applied to ultra-large prefabricated steel structure cooling towers. The hyperbolic steel cooling tower model generation method described in this application is based on computer numerical simulation.

[0025] Specifically, determining the generatrix equation for the shape of the hyperbolic steel cooling tower includes the following steps: S11. Based on the tower bottom diameter determined in the process specifications. D 底 , throat diameter D 喉 Throat height H 喉 Air inlet diameter D 进 Air inlet height H 进 Height of the air outlet at the top of the tower H 出 and the diameter of the air outlet at the top of the tower D出 The hyperbolic equation of the hyperbolic steel cooling tower is determined as shown in equation (1).

[0026] (1) S12. The generatrix of the hyperbolic steel cooling tower is a planar curve. Assuming that the generatrix of the hyperbolic steel cooling tower is located in the xz plane, let y=0 in the hyperbolic equation of the hyperbolic steel cooling tower.

[0027] S13. Based on the process data, obtain the parameter a= in the hyperbolic equation of the hyperbolic steel cooling tower. D 底 / 2; The generatrix equation of the hyperbolic steel cooling tower is shown in equation (2). (2) Based on the determined height of the tower top air outlet H 出 and the diameter of the air outlet at the top of the tower D 出 The coordinates of the node at the top air outlet of the tower on the xz plane are determined as (x 出 , z 出 ), where x 出 = D 出 / 2,z 出 = H 出 The coordinates of the above nodes are (x... 出 , z 出 Substituting into equation (2), we obtain the parameter c in the hyperbolic equation of the hyperbolic steel cooling tower.

[0028] like Figure 2 The figure shows a schematic representation of the generatrix of a hyperbolic steel cooling tower in the xz plane.

[0029] Specifically, determining the inner and outer main truss nodes using a combination of numerical and graphical methods includes the following steps: S21. Based on the generatrix equation of the hyperbolic steel cooling tower, take the zeroth floor point (0 meters above the bottom of the generatrix) as the reference point. The coordinates are ( ,0,0), such as Figure 3 As shown.

[0030] S22. Based on the number n of hyperbolic circumferential mesh divisions, divide the above reference points... By circumferentially arraying n terms from the origin O, we obtain all nodes of the zeroth layer mesh at a bottom height of 0 meters. ,like Figure 3The black dot in the image has coordinates ( ). , (,0), where n is a natural number, j It is an integer, and 1 ≤ j ≤n, such as Figure 3 and Figure 5 As shown, n is 28.

[0031] S23. Based on the number of layers in the hyperbolic steel cooling tower and the height of each layer, determine the coordinate value of the first layer reference point node along the z-axis as Z1.

[0032] S24. Set the reference point of the zeroth layer. Translate Z1 upwards along the z-axis to form the initial first layer of reference point nodes.

[0033] S25. Rotate the initial first-layer reference point nodes around the central z-axis by an angle of 360 / (2n) to obtain the first-layer reference points. The coordinates are ( , (Z1), such as Figure 4 As shown.

[0034] S26. The above benchmark points By circumferentially arraying n terms from the origin O, we obtain all nodes of the first layer of the mesh. The coordinates are ( , ,Z1).

[0035] S27. And so on, to obtain all the outer main truss nodes. coordinates ( , Z m ), where m is the layer number of the tower body, m is an integer, and m≥0.

[0036] S28. Based on the thickness of the hyperbolic circumferential mesh, offset all outer main truss nodes radially by a distance d in the xy plane towards the center O to obtain the nodes of the inner main truss of the hyperbolic steel cold tower. ,like Figure 5 As shown.

[0037] Specifically, the process of determining the tower body members of the steel cooling tower using a combination of numerical and graphical methods to obtain the tower body model 17 includes the following steps: S31. Determine the basic unit chord 5.

[0038] S32. Determine the basic unit, the diagonal web member 6.

[0039] S33. Determine the basic unit horizontal bar 7.

[0040] S34. Determine the basic unit triangular support unit member 16.

[0041] S35. Arrange n terms of the tower body members in a circumferential array along the z-axis centerline 19 to obtain the tower body model 17, as shown. Figure 9 and Figure 10 As shown.

[0042] Specifically, determining the basic unit chord 5 includes the following steps: S311. Connect the corresponding outer main truss nodes of two adjacent layers sequentially to form outer diagonal chord 1. For example: Figure 4 , Figure 6 and Figure 7 As shown, the outer main truss node of the zeroth layer. Node with the first outer main truss Connected to form the first outer diagonal chord 1; the first outer main truss node. Node with the outer main truss of the zeroth layer Connected to form the second outer diagonal chord 1; the zeroth layer outer main truss node Node with the first outer main truss Connected to form the third outer diagonal chord 1; the first outer main truss node Node with the outer main truss of the zeroth layer They are connected to form the fourth outer diagonal chord 1.

[0043] S312. Connect the corresponding inner main truss nodes of two adjacent layers sequentially to form inner diagonal chord members 2. For example: Figure 6 and Figure 7 As shown, the inner main truss node of the zeroth layer. Nodes with the first inner main truss Connected to form the first inner diagonal chord 2; the first inner main truss node. Node with the inner main truss of the zeroth layer Connected to form the second inner diagonal chord 2; the zeroth layer inner main truss node Nodes with the first inner main truss Connected to form the third inner diagonal chord 2; the first inner main truss node Node with the inner main truss of the zeroth layer Connected together, forming the fourth inner diagonal chord 2.

[0044] S313. Connect the adjacent outer main truss nodes on the same floor sequentially to form the outer horizontal chord 3. For example: Figure 4 , Figure 6 and Figure 7 As shown, the first layer outer main truss node Node with the first outer main truss Connected to form the first outer horizontal chord member 3; the second outer main truss node Node with the second outer main truss Connected to form the second outer horizontal chord member 3; the third outer main truss node Node with the third outer main truss Connected to form the third outer horizontal chord member 3; the fourth outer main truss node Node with the fourth outer main truss They are connected to form the fourth outer horizontal chord 3.

[0045] S314. Connect the adjacent inner main truss nodes on the same floor in sequence to form the inner horizontal chord 4. For example: Figure 6 and Figure 7 As shown, the first inner layer main truss node Nodes with the first inner main truss Connected to form the first inner horizontal chord member 4; the second inner main truss node Nodes with the second inner main truss Connected to form the second inner horizontal chord member 4; the third inner main truss node Nodes of the third inner layer main truss Connected to form the third inner horizontal chord member 4; the fourth inner main truss node. Node with the fourth inner main truss They are connected to form the fourth inner horizontal chord member 4.

[0046] The outer diagonal chord 1, the inner diagonal chord 2, the outer horizontal chord 3, and the inner horizontal chord 4 all belong to the basic unit chord 5.

[0047] Specifically, determining the basic unit, the diagonal web member 6, includes the following steps: S321. Divide the outer diagonal chord 1 into four equal parts to obtain three initial division points. For example: Figure 8 As shown, the outer main truss node of the zeroth layer Node with the first outer main truss The outer diagonal chord 1, formed by the connection, is divided into four equal parts, resulting in three points of initial division: , and ; by the zeroth layer outer main truss node Node with the first outer main truss The outer diagonal chord 1, formed by the connection, is divided into four equal parts, resulting in three points of initial division: , and ; Consists of the first layer outer main truss node Node with the first outer main truss The outer horizontal chord 3, formed by the connection, is divided into four equal parts, resulting in three first division points: , and .

[0048] S322. Divide the inner diagonal chord 2 into four equal parts to obtain three second division points. For example: Figure 8 As shown, the inner main truss node of the zeroth layer Nodes with the first inner main truss The inner diagonal chord 2, formed by the connection, is divided into four equal parts, resulting in three second division points: , and ; by the inner main truss node of the zeroth layer Nodes with the first inner main truss The inner diagonal chord 2, formed by the connection, is divided into four equal parts, resulting in three second division points: , and ; Consists of the first inner layer main truss nodes Nodes with the first inner main truss The inner horizontal chord 4, formed by the connection, is divided into four equal parts, resulting in three second division points: , and .

[0049] S323. Connect the corresponding outer main truss nodes, the first division point, the second division point, and the inner main truss nodes sequentially to obtain the basic unit, the diagonal web member 6. For example: Figure 8 As shown, the outer main truss node of the zeroth layer. And the second division point Connected to form a basic unit, the diagonal web member 6; second division point The first division point Connected to form a basic unit, the diagonal web member 6; first division point And the second division point Connected to form a basic unit, the diagonal web member 6; second division point Node with the first outer main truss Connected together, they form a basic unit, the diagonal web member 6.

[0050] Specifically, determining the basic unit horizontal bar 7 includes the following steps: Connect the corresponding outer main truss nodes and inner main truss nodes on the same level to form the basic unit horizontal bar 7. For example: Figure 7 and Figure 8 As shown, the first layer outer main truss node Nodes with the first inner main truss Connected to form a basic unit horizontal bar 7; first layer outer main truss node Nodes with the first inner main truss Connect them to form a basic unit horizontal bar 7.

[0051] Specifically, determining the basic unit triangular support element 16 includes the following steps: S341. Connect the bisecting points of the two intersecting outer diagonal chord members 1 and the bisecting points of the outer horizontal chord member 3 in sequence to form a closed basic unit, the triangular support unit member 16. For example: Figure 8 As shown, the bisection point of an outer diagonal chord 1 is... The bisection point of the other outer diagonal chord 1 is... The bisection points of the outer horizontal chord 3 are: , connected in sequence , and The structure is closed, forming a basic unit triangular support unit rod 16.

[0052] S342, and connecting the bisecting points of the two intersecting inner diagonal chords 2 and the bisecting points of the inner horizontal chord 4 in sequence to form the basic unit triangular support unit member 16. For example: Figure 8 As shown, the bisection point of an inner diagonal chord 2 is... The bisection point of the other inner diagonal chord 2 is... The bisection points of the inner horizontal chord 4 are: , connected in sequence , and The structure is closed, forming a basic unit triangular support unit rod 16.

[0053] Specifically, determining the widening platform member 8 of the hyperbolic steel cold tower using a combination of numerical and graphical methods includes the following steps: S41. Based on the process specifications, clarify the outer diameter R of the extended platform member 8. Z and position height H Z .

[0054] S42. Determine the tower floor number i where the elevation of the expansion platform member 8 is located, where Z i-1 <H Z <Z i Zi-1 Z represents the position and height of the (i-1)th floor of the tower. i Let be the position and height of the i-th layer of the tower.

[0055] S43, in H Z Within the plane of position and height, draw a circle with radius R centered at point (0,0). Z A circle with radius R Z The circle is evenly divided into n arc segments, each arc segment forming a chord member 9 of the expansion platform, and the endpoints of each arc segment becoming expansion platform nodes. The divided arc segments intersect with the outer diagonal chord member 1 of the i-th layer and coincide with the angle of the outer diagonal chord member 1 of the (i-1)-th layer. The outer main truss nodes of the i-th layer are connected to the expansion platform nodes to obtain expansion platform web members 10. The chord member nodes of the expansion platform are connected one by one to the outer main truss nodes of the (i-1)-th layer to obtain expansion platform struts 11. The expansion platform chord member 9, expansion platform web members 10, and expansion platform struts 11 all belong to the expansion platform members 8. For example: Figures 11 to 13 As shown, the expansion platform node With the expansion platform nodes The arc segments between them connect to form a widened platform chord 9; the widened platform node Main truss node with the outer diagonal chord 1 of the i-th layer The staggered arrangement and connection form a single, extended platform web member 10; the extended platform nodes Main truss node with the outer diagonal chord 1 of the i-th layer The staggered arrangement and connection form a single, extended platform web member 10; the extended platform nodes Main truss node with outer diagonal chord 1 of layer i-1 The angles coincide and are connected to form a widening platform support rod 11; the widening platform node Main truss node with outer diagonal chord 1 of layer i-1 The angles are aligned and connected to form a single, widened platform support rod 11.

[0056] Specifically, determining the reinforcing ring member 12 of the hyperbolic steel cold tower using a combination of numerical and graphical methods includes the following steps: Based on the predetermined thickness r of the reinforcing ring member 12, the inner main truss nodes of the i-th layer are offset inward by a distance r, and all inner main truss nodes are rotated around the center by an angle of 360 / (2n) to obtain the reinforcing ring point; the reinforcing ring points are connected sequentially to obtain the reinforcing ring chord member 13; the corresponding inner main truss nodes of the i-th layer are connected to the reinforcing ring points sequentially to obtain the reinforcing ring web member 14; the corresponding reinforcing ring points are connected one by one to the inner main truss nodes of the (i-1)-th layer to obtain the reinforcing ring strut 15; the reinforcing ring chord member 13, the reinforcing ring web member 14, and the reinforcing ring strut 15 all belong to the reinforcing ring member 12. For example: Figures 14 to 16 As shown, the strengthening link point Strengthening key links Connect to form a reinforcing ring chord 13; strengthen the joint point. Respectively connected to the inner main truss nodes of the i-th layer Inner main truss node Connecting to form a reinforcing ring web rod 14; reinforcing joint points With the inner main truss node of the i-th layer Connect to form a reinforcing ring web rod 14; reinforce the joint point. With the inner main truss node of the (i-1)th layer Connect to form a reinforcing ring strut 15; reinforce the joint points. With the inner main truss node of the (i-1)th layer Connect them to form a reinforcing ring strut 15.

[0057] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by this application.

Claims

1. A method for generating a hyperbolic steel cooling tower model, characterized in that, include: Determine the generatrix equation of the hyperbolic steel cooling tower shape; The inner and outer main truss nodes are determined by combining numerical and graphical methods. The tower body members of the steel cooling tower are determined by combining numerical and graphical methods, and then the tower body model is obtained (17). The expansion platform members of the hyperbolic steel cold tower are determined by combining numerical and graphical methods (8). The reinforcing ring member (12) of the hyperbolic steel cold tower is determined by combining numerical and graphical methods. The generatrix equation for determining the shape of the hyperbolic steel cooling tower includes: According to the tower bottom diameter determined in the process specifications D 底 , throat diameter D 喉 Throat height H 喉 Air inlet diameter D 进 Air inlet height H 进 Height of the air outlet at the top of the tower H 出 and the diameter of the air outlet at the top of the tower D 出 The hyperbolic equation of the hyperbolic steel cooling tower is determined as shown in equation (1). （1） The generatrix of the hyperbolic steel cooling tower is a planar curve. Assuming that the generatrix of the hyperbolic steel cooling tower is located in the xz plane, let y=0 in the hyperbolic equation of the hyperbolic steel cooling tower. Based on the process data, the parameter a= in the hyperbolic equation of the hyperbolic steel cooling tower is obtained. D 底 / 2; The generatrix equation of the hyperbolic steel cooling tower is shown in equation (2). （2） Based on the determined height of the tower top air outlet H 出 and the diameter of the air outlet at the top of the tower D 出 The coordinates of the node at the top air outlet of the tower on the xz plane are determined as (x 出 , z 出 ), where x 出 = D 出 / 2,z 出 = H 出 The coordinates of the above nodes are (x... 出 , z 出 Substituting into equation (2), we obtain the parameter c in the hyperbolic equation of the hyperbolic steel cooling tower. The method of determining the inner main truss nodes and outer main truss nodes using a combination of numerical and graphical methods includes: Based on the generatrix equation of the hyperbolic steel cooling tower, the zeroth floor point, with a bottom height of 0 meters on the generatrix of the hyperbolic steel cooling tower, is taken as the reference point. The coordinates are ( ,0,0); Based on the number n of hyperbolic circumferential mesh divisions, the above reference points are... By circumferentially arraying n terms from the origin O, we obtain all nodes of the zeroth layer mesh at a bottom height of 0 meters. The coordinates are ( , (,0), where n is a natural number, j It is an integer, and 1 ≤ j ≤n; Based on the number of layers in the tower body of the hyperbolic steel cold tower and the height of each layer, the coordinate value of the first layer reference point node along the z-axis is determined to be Z1. The reference point of the zeroth layer Translate Z1 upwards along the z-axis to form the initial first layer of reference point nodes; Rotate the initial first-layer reference point nodes around the central z-axis by an angle of 360 / (2n) to obtain the first-layer reference points. The coordinates are ( , (Z1) The above benchmark points By circumferentially arraying n terms from the origin O, we obtain all nodes of the first layer of the mesh. The coordinates are ( , (Z1) By analogy, all outer main truss nodes can be obtained. coordinates ( , Z m ), where m is the number of the tower's layers, m is an integer, and m≥0; Based on the thickness of the hyperbolic circumferential mesh, all outer main truss nodes are radially offset by a distance d in the xy plane towards the center O, thus obtaining the nodes of the inner main truss of the hyperbolic steel cold tower. .

2. The method for generating a hyperbolic steel cooling tower model according to claim 1, characterized in that, The method of determining the tower body members of the steel cooling tower by combining numerical and graphical methods, and then obtaining the tower body model (17), includes: Determine the basic unit chord (5); Determine the basic unit, the diagonal web member (6); Determine the basic unit horizontal bar (7); Determine the basic unit triangular support unit member (16); The tower members are arranged in a circumferential array of n terms along the z-axis centerline (19) to obtain the tower model (17).

3. The method for generating a hyperbolic steel cooling tower model according to claim 2, characterized in that, The determination of the basic unit chord (5) includes: Connect the corresponding outer main truss nodes of two adjacent layers in sequence to form an outer diagonal chord (1). Connect the corresponding inner main truss nodes of two adjacent layers in sequence to form inner diagonal chords (2). Connect the adjacent outer main truss nodes on the same level in sequence to form the outer horizontal chord (3). Connect the adjacent inner main truss nodes on the same floor in sequence to form the inner horizontal chord (4). The outer diagonal chord (1), inner diagonal chord (2), outer horizontal chord (3), and inner horizontal chord (4) all belong to the basic unit chord (5).

4. The method for generating a hyperbolic steel cooling tower model according to claim 3, characterized in that, The determination of the basic unit diagonal web member (6) includes: Divide the outer diagonal chord (1) into four equal parts to obtain three first division points; Divide the inner diagonal chord (2) into four equal parts to obtain three second division points; Connect the corresponding outer main truss nodes, first division points, second division points and inner main truss nodes in sequence to obtain the basic unit diagonal web member (6).

5. The method for generating a hyperbolic steel cooling tower model according to claim 4, characterized in that, The determination of the basic unit horizontal bar (7) includes: Connect the corresponding outer main truss nodes and inner main truss nodes on the same level to form basic unit horizontal bars (7).

6. The method for generating a hyperbolic steel cooling tower model according to claim 5, characterized in that, The determination of the basic unit triangular support unit rod (16) includes: By connecting the bisection points of the two intersecting outer diagonal chord members (1) and the bisection points of the outer horizontal chord member (3) in sequence, the basic unit triangular support unit member (16) is obtained. And by connecting the bisection points of the two intersecting inner diagonal chords (2) and the bisection points of the inner horizontal chords (4) in sequence, the basic unit triangular support unit member (16) is obtained.

7. The method for generating a hyperbolic steel cooling tower model according to claim 6, characterized in that, The method of determining the expansion platform member (8) of the hyperbolic steel cold tower by combining numerical and graphical methods includes: According to the process specifications, the outer diameter R of the platform member (8) is clearly defined. Z and position height H Z ; Determine the number of stories i of the tower body where the elevation of the expansion platform member (8) is located, where Z i-1 <H Z <Z i Z i-1 Z represents the position and height of the (i-1)th floor of the tower. i Let i be the height of the i-th floor of the tower. In H Z Within the plane of position and height, draw a circle with radius R centered at point (0,0). Z A circle with radius R Z The circle is evenly divided into n arc segments, each arc segment forming a chord (9) of the expansion platform, and the endpoint of each arc segment is a node of the expansion platform; the divided arc segments intersect with the outer diagonal chord (1) of the i-th layer and coincide with the angle of the outer diagonal chord (1) of the (i-1)-th layer, and the nodes of the outer main truss of the i-th layer are connected to the nodes of the expansion platform to obtain the web members (10) of the expansion platform; the nodes of the expansion platform chord are connected one by one to the nodes of the outer main truss of the (i-1)-th layer to obtain the struts (11) of the expansion platform; the chord (9), web members (10) and struts (11) of the expansion platform are all members (8) of the expansion platform.

8. The method for generating a hyperbolic steel cooling tower model according to claim 7, characterized in that, The method of determining the reinforcing ring member (12) of the hyperbolic steel cold tower by combining numerical and graphical methods includes: Based on the thickness r of the predetermined reinforcing ring member (12), the inner main truss node of the i-th layer is offset inward by a distance r, and all inner main truss nodes are rotated around the center by an angle of 360 / (2n) to obtain the reinforcing ring node; the reinforcing ring node is connected in sequence to obtain the reinforcing ring chord member (13); the corresponding inner main truss node of the i-th layer is connected to the reinforcing ring node in sequence to obtain the reinforcing ring web member (14); the corresponding reinforcing ring node is connected to the inner main truss node of the (i-1)-th layer to obtain the reinforcing ring strut (15); the reinforcing ring chord member (13), the reinforcing ring web member (14) and the reinforcing ring strut (15) all belong to the reinforcing ring member (12).

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