Lattice column assembly type wind power tower

Abstract

The invention provides a latticed column assembly type wind power tower which is formed by sequentially splicing a plurality of tower sections from bottom to top, each tower section is formed by splicing a plurality of limb column units in the circumferential direction, and each limb column unit comprises two limb columns, a first transverse rod, a second transverse rod and an inclined rod crossed structure. The first cross rod is connected with the tops of the two corresponding branch columns, the second cross rod is connected with the bottoms of the two corresponding branch columns, the inclined rod crossing structure comprises two inclined rods which are connected with the two corresponding branch columns and are arranged in a crossing mode, and the two adjacent branch columns of the two adjacent branch column units of each tower section are connected through a connecting structure; the corresponding branch columns of the tower sections are sequentially connected to form a tower column, and the tower column is obliquely arranged relative to the height direction of the tower frame. The limb column unit can be manufactured in advance and only needs to be assembled on site, the construction effect of the tower can be improved, and the overall stability performance of the tower can be improved.

Description

Technical Field

[0001] The invention relates to the field of wind power equipment, and in particular to a lattice column assembled wind power tower. Background Art

[0002] As wind turbines develop towards large-scale, traditional conical towers cannot meet the requirements of wind turbines for capturing high-quality wind energy resources at higher altitudes due to their low rigidity and transportation restrictions. Lattice wind turbine towers have begun to emerge in this field with their advantages of high rigidity, economy, and convenient transportation. Lattice wind turbine towers have the disadvantages of difficult high-altitude welding, large engineering volume, and many construction safety hazards. To solve these problems, today's assembled lattice towers focus more on assembly at nodes, mainly through bolt connections to improve the degree of assembly, so as to reduce the impact of disadvantages on their development space and prospects. The current lattice column cross-sections are mostly regular cross-sections, mainly through welding or mechanical connection of tie plates and tie bars to achieve the effect of reducing the slenderness ratio of the column limbs and increasing the in-plane stiffness, while the circular cross-section column limbs are mostly welded. The cross-sections of the column limbs of the lattice column (plane) tower are all circular cross-sections. If welding is used during assembly, this will be contrary to the assembly concept. Summary of the invention

[0003] In view of the above technical problems, the technical solution adopted by the present invention is:

[0004] An embodiment of the present invention provides a lattice column assembled wind power tower, wherein the tower is formed by splicing n tower sections in sequence from bottom to top, n>2, and each tower section is formed by splicing m limb column units in a circumferential direction, m>2; wherein each limb column unit includes two limb columns, a first cross bar, a second cross bar and an oblique bar cross structure, wherein the first cross bar is respectively connected to the tops of the two corresponding limb columns, the second cross bar is respectively connected to the bottoms of the two corresponding limb columns, the oblique bar cross structure includes two oblique bars respectively connected to the two corresponding limb columns and cross-arranged, and the adjacent two limb columns of the two adjacent limb column units of each tower section are connected by a connecting structure; the corresponding limb columns of the n tower sections are sequentially connected to form a tower column, and the tower column is inclined relative to the height direction of the tower.

[0005] The present invention has at least the following beneficial effects:

[0006] The lattice column assembled wind power tower provided by the embodiment of the present invention is formed by splicing n tower sections from bottom to top in sequence, and each tower section is formed by splicing m limb column units in the circumferential direction, wherein each limb column unit includes two limb columns, a first cross bar, a second cross bar and an oblique bar cross structure, wherein the first cross bar is respectively connected to the top of the corresponding two limb columns, and the second cross bar is respectively connected to the bottom of the corresponding two limb columns, and the oblique bar cross structure includes two oblique bars respectively connected to the corresponding two limb columns and cross-arranged, and the adjacent two limb columns of the adjacent two limb column units of each tower section are connected by a connecting structure; the corresponding limb columns of the n tower sections are sequentially connected to form a tower column, and the tower column is inclined relative to the height direction of the tower. The limb column unit of the embodiment of the present invention can be pre-manufactured and only needs to be assembled on site. On the one hand, it is convenient to more strictly control the quality of the limb column unit and reduce the influence of external environmental factors on the welding quality. On the other hand, it can shorten the construction period, reduce the amount of on-site construction, and reduce the risk of workers working in dangerous environments. In addition, the adjacent limb columns are connected by connecting pieces, which can increase the overall stability of the tower.

[0007] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0009] Figure 1 A schematic structural diagram of a lattice column assembled wind power tower provided by an embodiment of the present invention;

[0010] Figure 2 A schematic diagram of a column end connection structure provided by an embodiment of the present invention;

[0011] Figure 3 A schematic structural diagram of a lattice column assembled wind power tower provided by another embodiment of the present invention;

[0012] Figure 4a A schematic diagram of a column connection structure provided by an embodiment of the present invention;

[0013] Figure 4b is a structural schematic diagram of an active connection plate;

[0014] Figure 5 Schematic diagram of square division. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0017] It should be noted that some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe the steps as sequential processes, many of the steps can be implemented in parallel, concurrently or simultaneously. In addition, the order of the steps can be rearranged. The process can be terminated when its operation is completed, but it can also have additional steps not included in the accompanying drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0018] The embodiment of the present invention provides a lattice column assembled wind power tower, such as Figure 1 As shown, the tower frame is formed by splicing n tower sections in sequence from bottom to top, n>2, and each tower section is formed by splicing m limb column units along the circumferential direction, m>2.

[0019] Among them, Figure 1 As shown, each limb column unit may include two limb columns 1, a first cross bar 2, a second cross bar 3 and an oblique bar cross structure, wherein the first cross bar 2 is respectively connected to the tops of the two corresponding limb columns, the second cross bar 3 is respectively connected to the bottoms of the two corresponding limb columns, the oblique bar cross structure includes two oblique bars 4 respectively connected to the two corresponding limb columns and cross-arranged, and the adjacent two limb columns of the two adjacent limb column units of each tower section are connected by a connecting structure; the corresponding limb columns of n tower sections are sequentially connected to form a tower column, and the tower column is inclined relative to the height direction of the tower frame.

[0020] In the embodiment of the present invention, n can be determined based on the construction height of the tower. m can be set based on actual needs. The inclination angle of the tower column is the angle between the tower column and the height direction of the tower. The angle can be determined based on actual conditions. In an exemplary embodiment, the angle can be 3° to 7°.

[0021] In the embodiment of the present invention, the crossbar and the diagonal bar can be welded to the limb column. The inclination angle of the crossbar and the diagonal bar can be determined based on the inclination angle of the tower column, as long as the angle between the plane where the spliced ​​limb column unit is located and the height direction can be equal to the inclination angle of the tower column. The crossbar and the diagonal bar can both be steel pipes.

[0022] In the embodiment of the present invention, flanges 5 are provided at both ends of each limb column, and fixing holes are provided on the flanges, and the flanges of the corresponding limb columns of two adjacent tower sections are fixedly connected by bolts. The flanges can be welded to the ends of the limb columns.

[0023] In an exemplary embodiment of the present invention, the connection structure may include a column end connection structure for connecting the column ends of two adjacent limb columns of two adjacent limb column units.

[0024] like Figure 2 As shown, the column end connection structure may include a flange plate 6 and two sleeves 7 arranged on the flange plate 6, each sleeve includes an upper insertion tube and a lower insertion tube that are connected and are respectively arranged on both sides of the flange plate, wherein the upper insertion tube is used to be inserted into the limb column of the upper tower section of two adjacent tower sections, and the lower insertion tube is used to be inserted into the limb column of the lower tower section of two adjacent tower sections, and the flange plate is formed with fixing holes 8 corresponding to the fixing holes on the flange plate of the limb column, and the flange plate and the flange plate are fixedly connected by bolts.

[0025] In the embodiment of the present invention, the flange plate provides connection rigidity between horizontal columns, the flange plate and the bolts resist the pull-out force between vertical columns, and the sleeve provides positioning for the connection and increases the lateral rigidity of the tower column.

[0026] In another exemplary embodiment of the present invention, the connection structure further includes an inter-column connection structure for realizing the inter-column connection between two adjacent limb columns of two adjacent limb column units.

[0027] like Figure 3 As shown in Figure 4, the inter-column connection structure may include two movable connecting plates 9 with the same structure and a first fixed connecting plate 10 and a second fixed connecting plate 11 respectively arranged on two adjacent limbs, the sum of the widths of the first fixed connecting plate 10 and the second fixed connecting plate 11 is equal to the width of the movable connecting plate, and the movable connecting plate and the fixed connecting plate are fixedly connected by bolts, that is, both the movable connecting plate and the fixed connecting plate are provided with fixing holes for the bolts to pass through.

[0028] Furthermore, in an embodiment of the present invention, the fixed connection plate is an H-shaped steel, and the movable connection plate is a channel steel. The fixed connection plate can be welded to the limb column, and the contact surface between the fixed connection plate and the limb column is an arc surface with the same outer diameter as the limb column. Different limb column units can be provided with different numbers of second connection structures, and the specific number of settings can be obtained based on the force analysis of the tower actually constructed. When the second connection structure is used to connect the limb columns, the fixed connection plates of the two limb columns to be connected are aligned to form an integral connection plate structure, and then one movable connection plate is embedded in one side of the integral connection plate structure, and the other movable connection plate is embedded in the other side of the integral connection plate structure. The vertical plates at both ends of the movable connection plate will respectively abut against the vertical plates at both ends of the integral connection plate structure. Then, bolts are used to pass through the fixing holes of the movable connection plate and the fixed connection plate, and the two can be fixed by tightening the bolts.

[0029] In the embodiment of the present invention, the limb columns are connected to each other through an inter-column connecting structure, which can further improve the stability of the tower.

[0030] In the embodiment of the present invention, the height of each tower section can be determined based on the height of the tower. Specifically, the height of each tower section is determined based on the design stage, construction conditions and environmental factors. The design stage mainly considers the direct impact of various load combinations on the stability of the tower, which is determined through load calculation; the construction conditions and environmental factors are mainly limited by the equipment capacity and site conditions. For example, the segmented height of the tower may need to be adjusted according to the maximum independent height of the construction equipment.

[0031] In the embodiment of the present invention, the length of the horizontal bars and the diagonal bars of each tower section may be determined based on the height of the column of the tower section and the distance between the limbs and the column.

[0032] In the embodiment of the present invention, the crossbars, diagonal bars, limbs and column tubes of the tower section can be made of steel. The interior of the tower frame is used for pouring concrete.

[0033] Furthermore, in the embodiment of the present invention, the inclination angle of the tower column and the distance between two adjacent limb columns of two adjacent limb column units are obtained by the following steps:

[0034] S10, obtaining indication information input by a user, wherein the indication information includes a tower section structure of a tower, a construction height, a first building attribute parameter, and a second building attribute parameter.

[0035] In the embodiment of the present invention, the first building attribute parameter is a parameter characterizing the construction cost of the tower, and the second building attribute parameter is a parameter characterizing the ability of the tower to resist the force of the external environment. The seismic performance of the tower can be obtained through the structural stiffness, bearing capacity, ductility and energy consumption capacity of the tower under reciprocating loads.

[0036] S20, based on the tower section structure and the construction height in the indication information, obtain the corresponding first building attribute parameter function expression Y1 and second building attribute parameter function expression Y2 from a preset function expression reference library, wherein Y1=f1(α, d), Y2=f2(α, d), α represents the inclination angle of the tower column, d is the distance between two adjacent limb columns of two adjacent limb column units; f1() and f2() are function expressions.

[0037] In the embodiment of the present invention, f1() and f2() may be set based on actual needs. In an illustrative embodiment, f1() and f2() may be multiple linear functions of α and d, preferably, a linear linear function of α and d.

[0038] S30, based on Y1, Y2 and the first building attribute parameter and the second building attribute parameter in the indication information, obtaining the inclination angle of the tower column and the distance between two adjacent limb columns of two adjacent limb column units.

[0039] In an embodiment of the present invention, the preset function expression reference library stores Q function expression reference tables, wherein the t-th function expression reference table is a function expression reference table corresponding to a tower having a t-th tower section structure type and in which limb columns are connected by a column end connection structure, and t ranges from 1 to Q. Q can be set based on actual needs, and different tower section structure types correspond to different numbers of limb column units.

[0040] Furthermore, the t-th function expression reference table is obtained by the following steps:

[0041] S201, set the construction height type counter s=1.

[0042] S202, if s≤z(t), execute S203, otherwise, execute S202; z(t) is the number of construction height types corresponding to the t-th tower section structure type.

[0043] In the embodiment of the present invention, the number of building height types can be determined based on actual conditions, and different building height types correspond to different building heights.

[0044] S203, based on the tower structure corresponding to the t-th tower structure type and the tower frame corresponding to the building height type, the inclination angle set P1={α 1 , α 2 , ..., α u , ..., α m1} and the distance set P2 = {d 1 , d 2 , ..., d t , ..., d m2}, get N combinations of building heights corresponding to the s-th building height type, each combination includes an inclination angle in P1 and a distance in P2, and any two combinations are different, α u is the uth tilt angle in P1, u ranges from 1 to m1, m1 is the number of tilt angles, P1 is an ascending set, d v is the vth distance in P2, the value of v ranges from 1 to m2, m2 is the number of distances, and P2 is an ascending set.

[0045] In the embodiment of the present invention, α 1 =α min , α m1 =α max , r 1 =α min , r m2 =r max α min and α max are the minimum tilt angle and the maximum tilt angle, respectively, which can be determined based on actual needs, for example, α min =3°, α max =7°. The difference between two adjacent tilt angles in P1 can be the same, and the difference can be set based on actual needs, such as 0.1°. min and d max are the minimum distance and the maximum distance respectively, which can be determined based on actual needs. For example, d min It can be determined based on the minimum safe distance between the limbs, which is equal to the minimum safe distance between the limbs; d max It is mainly related to the calculation of the tower. In the early design, the tower can be designed by SAP2000 software. After determining the main component parameters of the tower, the internal force of the tower structure with different column spacing is calculated to compare the internal force of the tower rod and the top side displacement to see whether they meet the requirements of the specification. Establish a relationship between the column spacing and the inspection index to optimize the maximum value of d, that is, d max The maximum distance to ensure that the internal forces of the tower members and the top lateral displacement meet the requirements of the specifications.

[0046] The difference between two adjacent distances in P2 may be the same, and the difference may be set based on actual needs, such as 1 cm.

[0047] S204: Obtain a first building attribute parameter and a second building attribute parameter of a tower corresponding to each of N combinations corresponding to the building height corresponding to the s-th building height type.

[0048] In the embodiment of the present invention, the first building property parameter of the tower may be determined based on the cost of components actually used in the tower. The second building property parameter may be determined based on experiments.

[0049] In the embodiment of the present invention, the seismic performance is mainly determined by conducting a quasi-static test on the scaled model. First, the scaled model is determined, and the size of the test structure is determined by using the relevant content of the similarity principle to ensure that the model and the prototype have similar mechanical behavior, so that the test results can effectively reflect the actual situation of the prototype. The test is determined to be a quasi-static test to simulate the earthquake effect. Specifically, a mixed loading method is adopted. Before the structure yields, the load is controlled by 2% of the yield load step by step, and each stage is cycled once. After the structure yields, displacement loading control is adopted, and the yield displacement is loaded step by step with an increment of 0.25 times, and each stage is cycled 3 times until the structural bearing capacity drops to 85% of the ultimate bearing capacity or the structure is obviously damaged and is not suitable for continued loading. When it is determined that it is failed, the loading is terminated. Through the data obtained from the test, the hysteresis curve, skeleton curve, ductility, stiffness, strength and energy dissipation capacity and other indicators are investigated to evaluate the seismic performance of the structure. Finally, the model is used to reflect the stress of the prototype structure under this load.

[0050] Those skilled in the art know that any method for obtaining the seismic performance of a tower frame based on the maximum load that the tower frame can withstand, the hysteresis curve area, ductility, energy dissipation capacity and stiffness degradation falls within the protection scope of the present invention.

[0051] S205, based on the first building attribute parameters and the second building attribute parameters of the tower corresponding to the N combinations corresponding to the building height corresponding to the s-th building height type, obtain the association weight between the first building attribute parameter and the inclination angle of the tower column, the association weight between the first building attribute parameter and the distance between the limb columns, the association weight between the second building attribute parameter and the inclination angle of the tower column, and the association weight between the second building attribute parameter and the distance between the limb columns, and then obtain the first building attribute function expression and the second building attribute parameter function expression corresponding to the building height corresponding to the s-th building height type; set s=s+1, and execute S202.

[0052] S206: Generate a tth function expression reference table based on the first building attribute function expression and the second building attribute parameter function expression corresponding to the building heights corresponding to the z(t) building height types.

[0053] Furthermore, S205 specifically includes:

[0054] S2051, based on the first building attribute parameter and the second building attribute parameter of the tower corresponding to the N combinations corresponding to the building height corresponding to the s-th building height type, obtain the corresponding first association weight combination set C1 s =(C1 1 s , C1 2 s , ..., C1 h1s , ..., C1 N-1 s ) and the second association weight combination set C2 s =(C2 1 s , C2 2 s , ..., C2 h2 s , ..., C2 N-1 s ), C1 h1 s C1 s The h1th association weight combination in C1 h1 s =(c1 h1α s , c1 h1d s ), c1 h1α s is the association weight between the h1th first building attribute parameter and the distance of the inclination angle of the column, c1 h1d s is the association weight between the h1th first building attribute parameter and the distance between the limbs and columns, where h1 ranges from 1 to N-1, and C2 h2 s =(c2 h2α s , c2 h2d s ), c2 h2α s is the association weight between the h2th first building attribute parameter, the second building attribute parameter and the inclination angle of the tower column and the distance between the limbs, c2 h2d s is the association weight between the h2th second building attribute parameter, the first building attribute parameter and the distance between the limbs and columns, and the value of h2 ranges from 1 to N-1.

[0055] S2052, draw a first square in the rectangular coordinate system with a length of L1 along the x-axis and a length of L2 along the y-axis, and draw a second square in the rectangular coordinate system with a length of L3 along the x-axis and a length of L4 along the y-axis; wherein L1=(c1 α s-max -c1 α s-min ), c1 α s-max C1 s The maximum association weight between the first building attribute parameter and the inclination angle of the tower column, c1 α s-max C1s The minimum association weight between the first building attribute parameter and the inclination angle of the tower column, c1 α s-max =max((c1 h1α s ) h1＝1……N-1 ), c1 α s-min =min((c1 h1α s ) h1＝1……N-1 ), L2=(c1 d s-max -c1 d s-min ), c1 α s-max =max((c h1α s ) h1＝1……N-1 ), c1 α s-min =min((c h1α s ) h1＝1……N-1 ), c1 d s-max C1 s The maximum association weight between the first building property parameter and the distance between limb columns, c1 d s-max C1 s The minimum association weight between the first building property parameter and the distance between limb columns, c1 d s-max =max((c1 h1d s ) h1＝1……N-1 ), c1 d s-min =min((c1 h1d s ) h1＝1……N-1 ); L3=(c2 α s-max -c2 α s-min ), c2 α s-max C2 s The maximum association weight between the second building attribute parameter and the inclination angle of the tower column, c2 α s-max C2 s The minimum association weight between the second building attribute parameter and the inclination angle of the tower column, c2 α s-max =max((c2 h2α s ) h2＝1……N-1 ), c2α s-min =min((c2 h2α s ) h2＝1……N-1 ), L4=(c2 d s-max -c2 d s-min ), c2 α s-max =max((c h2α s ) h2＝1……N-1 ), c2 α s-min =min((c h2α s ) h2＝1……N-1 ), c2 d s-max C2 s The maximum association weight between the second building property parameter and the distance between limb columns, c2 d s-min C2 s The minimum association weight between the second building property parameter and the distance between limb columns, c2 d s-max =max((c2 h2d s ) h2＝1……N-1 ), c2 d s-min =min((c2 h2d s ) h2＝1……N-1 ); The coordinates of the upper left corner of the first square are (c1 α s-min , c1 d s-min ), the coordinates of the upper left corner of the second square are (c2 α s-min , c2 d s-min ).

[0056] The rectangular coordinate system in the embodiment of the present invention can be as follows Figure 5 The scale unit of the x-axis is °, and the scale unit of the y-axis is cm.

[0057] S2053, get min((c1 g1α s -c1 (g1-1)α s ) g1＝2……N-1 ) as the length of the first cell along the x-axis and get min((c1 g1d s -c1 (g1-1)ds ) g1＝2……N-1 ) as the length of the first cell along the y-axis, and get min((c2 g2α s -c2 (g2-1)α s ) g2＝2……N-1 ) as the length of the second cell along the x-axis and get min((c2 g2d s -c2 (g2-1)d s ) g1＝2……N-1 ) as the length of the second unit cell along the y-axis.

[0058] S2054: Use the first cells to divide the first square into M1 first cells and use the second cells to divide the second square into M2 second cells.

[0059] In the embodiment of the present invention, since L1 may not be min((c1 g1α s -c1 (g1-1)α s ) g1＝2……N-1 ), L2 may not be an integer multiple of min((c1 g1r s -c1 (g1-1)r s ) g1＝2……N-1 ), the total area of ​​the M1 first cells may be greater than or equal to the area of ​​the first square, such as Figure 5 Similarly, the total area of ​​the M2 second cells may be greater than or equal to the area of ​​the second square. Figure 5 The thick line area is the square, and the small grid is the cell.

[0060] S2055, for the z1th first cell among the M1 first cells, traverse C1 s , if C1 h1 s Belongs to the first cell of the z1th row, change C1 h1 s Add to the count set corresponding to the z1th first cell. The initial value of the count set corresponding to the z1th first cell is empty. The value of z1 ranges from 1 to M1, and the initial value is 1. For the z2th second cell in the M2th second cells, traverse C2 s , if C2 h2 s Belongs to the second cell of the z2th row, change C2 h2 s Add it to the counting set corresponding to the z2th second cell, and the initial value of the counting set corresponding to the z2th second cell is empty.

[0061] S2056: The first cell corresponding to the count set with the most associated weight combinations in the M1 count sets is used as the first target cell, and the second cell corresponding to the count set with the most associated weight combinations in the M2 count sets is used as the second target cell.

[0062] In the embodiment of the present invention, if the number of association weights in a certain counting set is the largest, it means that more association weights are located in the cells corresponding to the counting set, which can be used as representative association weights.

[0063] S2057, based on the first target cell, obtaining the association weight between the first building attribute parameter corresponding to the construction height corresponding to the s-th construction height type and the inclination angle of the tower column, as well as the association weight between the first building attribute parameter and the distance between the limb columns, and based on the second target cell, obtaining the association weight between the second building attribute parameter corresponding to the construction height corresponding to the s-th construction height type and the inclination angle of the tower column, as well as the association weight between the second building attribute parameter and the distance between the limb columns.

[0064] Further, in an exemplary embodiment of the present invention, the association weight between the first building attribute parameter corresponding to the building height corresponding to the sth building height type and the inclination angle of the tower column is the x-coordinate value of the center coordinate of the first target cell, and the association weight between the first building attribute parameter corresponding to the building height corresponding to the sth building height type and the distance between the limb columns is the y-coordinate value of the center coordinate of the first target cell.

[0065] The association weight between the first building attribute parameter, the second building attribute parameter corresponding to the construction height corresponding to the sth construction height type and the inclination angle of the tower column is the x-coordinate value of the center coordinate of the second target cell, and the association weight between the second building attribute parameter, the first building attribute parameter corresponding to the construction height corresponding to the sth construction height type and the distance between the limb columns is the y-coordinate value of the center coordinate of the second target cell.

[0066] Furthermore, in another exemplary embodiment of the present invention, the association weight between the first building attribute parameter corresponding to the building height corresponding to the sth building height type and the inclination angle of the tower column is the x-coordinate value of the lower right corner coordinate of the first target cell, and the association weight between the first building attribute parameter corresponding to the building height corresponding to the sth building height type and the distance between the limb columns is the y-coordinate value of the lower right corner coordinate of the first target cell.

[0067] The association weight between the second building attribute parameter corresponding to the construction height corresponding to the sth construction height type and the inclination angle of the tower column is the x-coordinate value of the lower right corner coordinate of the second target cell, and the association weight between the second building attribute parameter corresponding to the construction height corresponding to the sth construction height type and the distance between the limb columns is the y-coordinate value of the lower right corner coordinate of the second target cell.

[0068] In the embodiment of the present invention, the distance between the limbs of the tower with a certain height and the inclination angle of the tower are determined in the above manner, which can take into account both economy and stability.

[0069] In another embodiment of the present invention, the following steps are further included after S30:

[0070] S40, constructing a corresponding tower frame as a candidate tower frame based on the tower segment structure and the construction height in the indication information, as well as the acquired inclination angle of the tower column and the distance between two adjacent limb columns of two adjacent limb column units;

[0071] S50, obtaining a second building attribute parameter of the candidate tower, and if an absolute value of a difference between the second building attribute parameter of the candidate tower and the second building attribute parameter in the indication information is greater than a set threshold, adding an inter-column connection structure between limb-column units of the candidate tower.

[0072] In the embodiment of the present invention, the threshold value may be set based on actual needs, for example, a value infinitely close to zero. An inter-column connection structure may be added between the limb-column units of the candidate tower in an experimental manner, so that the absolute value of the difference between the second building attribute parameter of the candidate tower with the inter-column connection structure added and the second building attribute parameter in the indication information is less than the set threshold value.

[0073] In the embodiment of the present invention, since the second building attribute parameter of the tower determined based on the determined inclination angle and the distance between the limb columns is compared with the specified second building attribute parameter, and the connection method between the limb columns is adjusted based on the comparison result, the difference in the stability performance of the tower caused by the error can be avoided.

[0074] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution disclosed in the present invention can be achieved, and this document does not limit this.

[0075] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lattice column assembled wind power tower, characterized in that: The tower frame is formed by splicing n tower sections in sequence from bottom to top, n>2, and each tower section is formed by splicing m limb column units in a circumferential direction, m>2; wherein each limb column unit includes two limb columns, a first cross bar, a second cross bar and an oblique bar cross structure, wherein the first cross bar is respectively connected to the tops of the two corresponding limb columns, the second cross bar is respectively connected to the bottoms of the two corresponding limb columns, the oblique bar cross structure includes two oblique bars respectively connected to the two corresponding limb columns and cross-arranged, and the adjacent two limb columns of the two adjacent limb column units of each tower section are connected by a connecting structure; the corresponding limb columns of the n tower sections are sequentially connected to form a tower column, and the tower column is inclined relative to the height direction of the tower frame.

2. The lattice column assembled wind power tower according to claim 1, characterized in that: Both ends of each limb column are provided with flanges, and fixing holes are provided on the flanges. The flanges of the corresponding limb columns of two adjacent tower sections are fixedly connected by bolts.

3. The lattice column assembled wind power tower according to claim 1, characterized in that: The connection structure includes a column end connection structure, which includes a flange plate and two sleeves arranged on the flange plate, each sleeve includes an upper insertion tube and a lower insertion tube that are connected and are respectively arranged on both sides of the flange plate, wherein the upper insertion tube is used to be inserted into the limb column of the upper tower section of two adjacent tower sections, and the lower insertion tube is used to be inserted into the limb column of the lower tower section of two adjacent tower sections, and the flange plate is formed with fixing holes corresponding to the fixing holes on the flange plate of the limb column.

4. The lattice column assembled wind power tower according to claim 3, characterized in that: The connection structure also includes an inter-column connection structure, which includes two movable connection plates with the same structure and a first fixed connection plate and a second fixed connection plate respectively arranged on two adjacent limbs, the sum of the widths of the first fixed connection plate and the second fixed connection plate is equal to the width of the movable connection plate, and the movable connection plate and the fixed connection plate are fixedly connected by bolts.

5. The lattice column assembled wind power tower according to claim 1, characterized in that: The inclination angle of the tower column and the distance between two adjacent limb columns of two adjacent limb column units are obtained by the following steps: S10, obtaining indication information input by a user, wherein the indication information includes a tower section structure of a tower, a construction height, a first building attribute parameter, and a second building attribute parameter; S20, based on the tower section structure and the construction height in the indication information, obtain the corresponding first building attribute parameter function expression Y1 and second building attribute parameter function expression Y2 from a preset function expression reference library, wherein Y1=f1(α, d), Y2=f2(α, d), α represents the inclination angle of the tower column, d is the distance between two adjacent limb columns of two adjacent limb column units; f1() and f2() are function expressions; S30, based on Y1, Y2 and the first building attribute parameter and the second building attribute parameter in the indication information, obtaining the inclination angle of the tower column and the distance between two adjacent limb columns of two adjacent limb column units.

6. The lattice column assembled wind power tower according to claim 5, characterized in that: The preset function expression reference library stores Q function expression reference tables, wherein the t-th function expression reference table is a function expression reference table corresponding to a tower having a t-th tower section structure type and in which limbs and columns are connected by a column end connection structure, and the value of t ranges from 1 to Q, wherein the t-th function expression reference table is obtained by the following steps: S201, set the construction height type counter s=1; S202, if s≤z(t), execute S203, otherwise, execute S202; z(t) is the number of construction height types corresponding to the t-th tower segment structure type; S203, based on the tower structure corresponding to the t-th tower structure type and the tower frame corresponding to the building height type, a set of inclination angles P1={α1, α2, ..., α u , ..., α m1 } and distance set P2 = {d1, d2, ..., d t , ..., d m2 }, get N combinations of building heights corresponding to the s-th building height type, each combination includes an inclination angle in P1 and a distance in P2, and any two combinations are different, α u is the uth tilt angle in P1, u ranges from 1 to m1, m1 is the number of tilt angles, P1 is an ascending set, d v is the vth distance in P2, the value of v ranges from 1 to m2, m2 is the number of distances, and P2 is an ascending set; S204, obtaining a first building attribute parameter and a second building attribute parameter of a tower corresponding to each of N combinations corresponding to a building height corresponding to the s-th building height type; S205, based on the first building attribute parameters and the second building attribute parameters of the tower corresponding to the N combinations corresponding to the building height corresponding to the s-th building height type, obtain the association weight between the first building attribute parameter and the inclination angle of the tower column, the association weight between the first building attribute parameter and the distance between the limb columns, the association weight between the second building attribute parameter and the inclination angle of the tower column, and the association weight between the second building attribute parameter and the distance between the limb columns, and then obtain the first building attribute function expression and the second building attribute parameter function expression corresponding to the building height corresponding to the s-th building height type; set s=s+1, and execute S202; S206: Generate a tth function expression reference table based on the first building attribute function expression and the second building attribute parameter function expression corresponding to the building heights corresponding to the z(t) building height types.

7. The lattice column assembled wind power tower according to claim 6, characterized in that: S205 specifically includes: S2051, based on the first building attribute parameters and the second building attribute parameters of the tower corresponding to the N combinations corresponding to the building height corresponding to the s-th building height type, obtain the corresponding first association weight combination set C1 s =(C11 s , C12 s , ..., C1 h1 s , ..., C1 N-1 s ) and the second association weight combination set C2 s =(C21 s , C22 s , ..., C2 h2 s , ..., C2 N-1 s ), C1 h1 s C1 s The h1th association weight combination in C1 h1 s =(c1 h1α s , c1 h1d s ), c1 h1α s is the association weight between the h1th first building attribute parameter and the distance of the inclination angle of the column, c1 h1d s is the association weight between the h1th first building attribute parameter and the distance between the limbs and columns, where h1 ranges from 1 to N-1, and C2 h2 s =(c2 h2α s , c2 h2d s ), c2 h2α s is the association weight between the h2th first building attribute parameter, the second building attribute parameter and the inclination angle of the tower column and the distance between the limbs, c2 h2d s is the association weight between the h2th second building attribute parameter, the first building attribute parameter and the distance between the limbs and columns, and the value of h2 ranges from 1 to N-1; S2052, draw a first square in the rectangular coordinate system with a length of L1 along the x-axis and a length of L2 along the y-axis, and draw a second square in the rectangular coordinate system with a length of L3 along the x-axis and a length of L4 along the y-axis; wherein L1=(c1 α s-max -c1 α s-min ), c1 α s-max C1 s The maximum association weight between the first building attribute parameter and the inclination angle of the tower column, c1 α s-max C1 s The minimum association weight between the first building attribute parameter and the inclination angle of the tower column, c1 α s-max =max((c1 h1α s ) h1＝1……N-1 ), c1 α s-min =min((c1 h1α s ) h1＝1……N-1 ), L2=(c1 d s -max -c1 d s-min ), c1 α s-max =max((c h1α s ) h1＝1……N-1 ), c1 α s-min =min((c h1α s ) h1＝1……N-1 ), c1 d s-max C1 s The maximum association weight between the first building property parameter and the distance between limb columns, c1 d s-max C1 s The minimum association weight between the first building property parameter and the distance between limb columns, c1 d s-max =max((c1 h1d s ) h1＝1……N-1 ), c1 d s -min =min((c1 h1d s ) h1＝1……N-1 ); L3=(c2 α s-max -c2 α s-min ), c2 α s-max C2 s The maximum association weight between the second building attribute parameter and the inclination angle of the tower column, c2 α s-max C2 s The minimum association weight between the second building attribute parameter and the inclination angle of the tower column, c2 α s-max =max((c2 h2α s ) h2＝1……N-1 ), c2 α s-min =min((c2 h2α s ) h2＝1……N-1 ), L4=(c2 d s-max -c2 d s-min ), c2 α s-max =max((c h2α s ) h2＝1……N-1 ), c2 α s-min =min((c h2α s ) h2＝1……N-1 ), c2 d s-max C2 s The maximum association weight between the second building property parameter and the distance between limb columns, c2 d s-min C2 s The minimum association weight between the second building property parameter and the distance between limb columns, c2 d s-max =max((c2 h2d s ) h2＝1……N-1 ), c2 d s-min =min((c2 h2d s ) h2＝1……N-1 ); The coordinates of the upper left corner of the first square are (c1 α s-min , c1 d s-min ), the coordinates of the upper left corner of the second square are (c2 α s-min , c2 d s-min )； S2053, get min((c1 g1α s -c1 (g1-1)α s ) g1＝2……N-1 ) as the length of the first cell along the x-axis and get min((c1 g1d s -c1 (g1-1)d s ) g1＝2……N-1 ) as the length of the first cell along the y-axis, and get min((c2 g2α s -c2 (g2-1)α s ) g2＝2……N-1 ) as the length of the second cell along the x-axis and get min((c2 g2d s -c2 (g2-1)d s ) g1＝2……N-1 ) as the length of the second cell along the y-axis; S2054, using the first cells to divide the first square into M1 first cells and using the second cells to divide the second square into M2 second cells; S2055, for the z1th first cell among the M1 first cells, traverse C1 s , if C1 h1 s Belongs to the first cell of the z1th row, change C1 h1 s Add to the count set corresponding to the z1th first cell. The initial value of the count set corresponding to the z1th first cell is empty. The value of z1 ranges from 1 to M1, and the initial value is 1. For the z2th second cell in the M2th second cells, traverse C2 s , if C2 h2 s Belongs to the second cell of the z2th row, change C2 h2 s Add to the count set corresponding to the z2th second cell, the initial value of the count set corresponding to the z2th second cell is empty; S2056, taking the first cell corresponding to the count set with the most associated weight combinations in the M1 count sets as the first target cell and taking the second cell corresponding to the count set with the most associated weight combinations in the M2 count sets as the second target cell; S2057, based on the first target cell, obtaining the association weight between the first building attribute parameter corresponding to the construction height corresponding to the s-th construction height type and the inclination angle of the tower column, as well as the association weight between the first building attribute parameter and the distance between the limb columns, and based on the second target cell, obtaining the association weight between the second building attribute parameter corresponding to the construction height corresponding to the s-th construction height type and the inclination angle of the tower column, as well as the association weight between the second building attribute parameter and the distance between the limb columns.

8. The lattice column assembled wind power tower according to claim 7, characterized in that: The association weight between the first building attribute parameter corresponding to the building height corresponding to the s-th building height type and the inclination angle of the tower column is the x-coordinate value of the center coordinate of the first target cell, and the association weight between the first building attribute parameter corresponding to the building height corresponding to the s-th building height type and the distance between the limb columns is the y-coordinate value of the center coordinate of the first target cell; The association weight between the first building attribute parameter, the second building attribute parameter corresponding to the construction height corresponding to the sth construction height type and the inclination angle of the tower column is the x-coordinate value of the center coordinate of the second target cell, and the association weight between the second building attribute parameter, the first building attribute parameter corresponding to the construction height corresponding to the sth construction height type and the distance between the limb columns is the y-coordinate value of the center coordinate of the second target cell.

9. The lattice column assembled wind power tower according to claim 7, characterized in that: The association weight between the first building attribute parameter corresponding to the building height corresponding to the s-th building height type and the inclination angle of the tower column is the x-coordinate value of the lower right corner coordinate of the first target cell, and the association weight between the first building attribute parameter corresponding to the building height corresponding to the s-th building height type and the distance between the limb columns is the y-coordinate value of the lower right corner coordinate of the first target cell; The association weight between the second building attribute parameter corresponding to the construction height corresponding to the sth construction height type and the inclination angle of the tower column is the x-coordinate value of the lower right corner coordinate of the second target cell, and the association weight between the second building attribute parameter corresponding to the construction height corresponding to the sth construction height type and the distance between the limb columns is the y-coordinate value of the lower right corner coordinate of the second target cell.

10. The lattice column assembled wind power tower according to claim 5, characterized in that: After S30, the following steps are also included: S40, constructing a corresponding tower frame as a candidate tower frame based on the tower segment structure and the construction height in the indication information, as well as the acquired inclination angle of the tower column and the distance between two adjacent limb columns of two adjacent limb column units; S50, obtaining a second building attribute parameter of the candidate tower, and if an absolute value of a difference between the second building attribute parameter of the candidate tower and the second building attribute parameter in the indication information is greater than a set threshold, adding an inter-column connection structure between limb-column units of the candidate tower.

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