Tower structure

Abstract

The utility model relates to a tower structure which comprises a main body frame, a plurality of main body stand columns and a top main body frame beam, the main body stand columns are arranged at intervals in the circumferential direction, and the top main body frame beam is connected between the tops of every two adjacent main body stand columns. The conversion layer frame comprises a plurality of conversion stand columns which are arranged at intervals in the circumferential direction, the conversion stand columns are inclined columns, the bottom ends of the conversion stand columns are hinged to the corresponding top main body frame beams, and a top conversion frame beam is connected between the tops of every two adjacent conversion stand columns; the area of a frame defined by the tops of the conversion stand columns is smaller than that of a frame defined by the tops of the main body stand columns. According to the tower structure, the situation that the columns of the transfer layer are directly connected with the platform beams of the main body frame and directly act on the platform beams can be avoided, and the tower structure is more suitable for a column base node of a large tower at the transfer layer.

Description

Technical Field

[0001] The utility model relates to the field of towers, in particular to a tower structure. Background Art

[0002] For tower structures where equipment is arranged from top to bottom, it is usually necessary to reduce the frame area above a certain elevation due to process requirements and equipment size. If the vertical force above the transfer layer is small, the columns above the transfer layer are usually directly seated on the platform beam, bolted or welded directly to the platform beam flange, and then transmit the force to the frame beam, frame column and even the foundation.

[0003] However, for structures with large vertical forces above the transfer layer, many platform layers, and strict requirements on inter-layer displacement, the horizontal and vertical forces at the column base are large, and it is not appropriate to directly act on the platform beam inside the frame. The main reasons are: (1) The top elevation of the platform beam is fixed, and the load transmitted from the column base to the platform beam is large, which will make the height of the platform beam higher, and excessively compress the clearance between the upper and lower layers; (2) The flange of the platform beam is generally small, and the arrangement of the column base node cannot be realized; (3) The platform beam is a simply supported beam, and the vertical deformation is greater, which will cause greater deformation of the tower top, and considering the connection, the height of the frame beam will be relatively high, resulting in a higher overall steel consumption. Utility Model Content

[0004] The utility model aims to provide a tower structure which can avoid the columns of the transfer layer being directly connected to the platform beams of the main frame and directly acting on the platform beams, and is more suitable for the column foot node method of the transfer layer of a large tower.

[0005] The purpose of the utility model is achieved in this way: a tower structure, comprising:

[0006] A main frame, comprising a plurality of main columns arranged at intervals in the circumferential direction and a top main frame beam connected between the tops of two adjacent main columns;

[0007] The conversion layer frame includes a plurality of conversion columns arranged at circumferential intervals, the conversion columns are inclined columns, the bottom ends of the conversion columns are hinged to the corresponding top main frame beams, the tops of two adjacent conversion columns are connected with a top conversion frame beam, and the frame area enclosed by the tops of the plurality of conversion columns is smaller than the frame area enclosed by the tops of the plurality of main columns.

[0008] In a preferred embodiment of the present invention, the cross-section of the main frame is rectangular, and the main frame also includes two platform beams arranged in parallel and at intervals, and the two ends of the platform beams are respectively connected to two top main frame beams arranged oppositely; the number of conversion columns is four, and the hinge position between the bottom end of the conversion column and the corresponding top main frame beam corresponds to the connection position between the corresponding platform beam and the top main frame beam, and the length direction of the conversion column is arranged obliquely from bottom to top along the length direction of the corresponding platform beam.

[0009] In a preferred embodiment of the present invention, at least one intermediate conversion frame beam is connected between two adjacent conversion columns, and a plurality of vertical oblique support beams are provided between two adjacent conversion columns, and both ends of the vertical oblique support beams are connected to the corresponding top main frame beam, top conversion frame beam or intermediate conversion frame beam.

[0010] In a preferred embodiment of the present invention, the conversion column is a cross column, the main column is an I-beam column, the plate surface of one of the webs of the conversion column is perpendicular to the plate surface of the web of the top main frame beam, and the web of the conversion column includes an upper web and a lower web connected up and down, the width of the lower web gradually decreases from top to bottom, and the bottom end width of the lower web is smaller than the width of the flange plate of the top main frame beam.

[0011] In a preferred embodiment of the present invention, a first thickening layer is provided on the lower web, and a second thickening layer is provided on the lower part of another web in the conversion column.

[0012] In a preferred embodiment of the present invention, transverse reinforcing ribs are provided on the two webs of the conversion column and at the joint positions corresponding to the upper web and the lower web.

[0013] In a preferred embodiment of the present invention, a conversion vertical reinforcement rib is provided at the lower portion of another web in the conversion column along its length direction.

[0014] In a preferred embodiment of the utility model, a column base plate is connected to the bottom end of the conversion column, a retaining ring is provided between the top main frame beam and the column base plate, a pad is provided inside the retaining ring, a gap is left between the pad and the inner ring of the retaining ring, the thickness of the pad is greater than the thickness of the retaining ring, a gap is left between the top surface of the retaining ring and the bottom surface of the column base plate, and the bottom surface of the retaining ring rests on the top surface of the top main frame beam; the retaining ring, the top main frame beam and the column base plate are connected by passing a plurality of fasteners, the pad is connected to the column base plate, and the pad can rotate in the retaining ring.

[0015] In a preferred embodiment of the present invention, the retaining ring is a rectangular ring body, the cushion block is a rectangular block, and the bottom of the cushion block is provided with a rounded corner so that the cushion block can rotate in the retaining ring.

[0016] In a preferred embodiment of the present invention, main body vertical reinforcing ribs are provided on both sides of the web of the top main body frame beam, and frame beam reinforcing ribs are provided on the bottom surface of the top flange plate of the top main body frame beam.

[0017] As described above, the tower structure in the utility model can reduce the platform area above the transfer layer by adopting a transfer layer frame composed of multiple inclined columns, and avoid the columns of the transfer layer being directly connected to the platform beam of the main frame and directly acting on the platform beam. In addition, the bottom end of each transfer column is hinged to the top main frame beam, which can reduce the concentrated moment of force transmitted to the top main frame beam by the bending moment of the column foot. It can be applied to the situation where the horizontal force and vertical force of the column foot above the transfer layer are large and it is not suitable to directly act on the platform beam inside the main frame. It is more suitable for the column foot node method of large tower at the transfer layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0019] Figure 1 : A schematic top view of the tower structure provided by the utility model;

[0020] Figure 2 :for Figure 1 Sectional view along the middle of MM;

[0021] Figure 3 :for Figure 1 Section along NN;

[0022] Figure 4 :for Figure 1 Sectional view along AA;

[0023] Figure 5 :for Figure 1 Section along BB;

[0024] Figure 6 : A partial three-dimensional schematic diagram of the tower structure provided for the utility model.

[0025] Figure 7 : A partial side view of the tower structure provided by the utility model.

[0026] Figure 8 :for Figure 7 Cross-section along CC;

[0027] Fig. 9 :for Figure 7 Section along DD.

[0028] Description of Figure Numbers:

[0029] 1. Main column; 11. Main column; 12. Middle column;

[0030] 2. Top main frame beam; 21. Main vertical reinforcement ribs; 22. Frame beam reinforcement ribs;

[0031] 3. Platform beam;

[0032] 4. Conversion column; 41. Upper web; 42. Lower web; 421. First thickening layer; 43. Second thickening layer; 44. Transverse stiffener; 45. Conversion vertical stiffener; 46. Column bottom plate; 47. Retaining ring; 471. Fastener; 48. Pad;

[0033] 5. Top conversion frame beam;

[0034] 6. Intermediate conversion frame beam;

[0035] 7. Vertical inclined support beam. DETAILED DESCRIPTION

[0036] In order to have a clearer understanding of the technical features, purposes and effects of the utility model, the specific implementation methods of the utility model are now described with reference to the accompanying drawings.

[0037] like Figures 1 to 9 As shown, this embodiment provides a tower structure, including:

[0038] The main frame includes a plurality of main columns 1 arranged at intervals in the circumferential direction and a top main frame beam 2 connected between the tops of two adjacent main columns 1;

[0039] The conversion layer frame includes a plurality of conversion columns 4 arranged at circumferential intervals, the conversion columns 4 are inclined columns, the bottom ends of the conversion columns 4 are hinged to the corresponding top main frame beams 2, the tops of two adjacent conversion columns 4 are connected with a top conversion frame beam 5, and the frame area enclosed by the tops of the plurality of conversion columns 4 is smaller than the frame area enclosed by the tops of the plurality of main columns 1.

[0040] Therefore, the tower structure in this embodiment, by adopting a transfer layer frame composed of multiple inclined columns, can reduce the platform area above the transfer layer, and avoid the transfer layer columns being directly connected to the platform beam 3 of the main frame and directly acting on the platform beam 3, and the bottom end of each transfer column 4 is hinged to the top main frame beam 2, which can reduce the concentrated moment of force transmitted to the top main frame beam 2 by the bending moment of the column foot. It can be used in the situation where the horizontal force and vertical force of the column foot above the transfer layer are large and it is not suitable to directly act on the platform beam 3 inside the main frame. It is more suitable for the column foot node method of large tower at the transfer layer.

[0041] In a specific implementation, the cross-sectional shapes of the main frame and the conversion layer frame and the number of each main column 1 and the conversion column 4 can be designed according to actual needs. Figure 1 The cross-section of the main frame is rectangular, and the main frame also includes two platform beams 3 arranged in parallel and at intervals, and the two ends of the platform beam 3 are respectively connected to the two top main frame beams 2 arranged oppositely; the number of conversion columns 4 is four, and the hinge position between the bottom end of the conversion column 4 and the corresponding top main frame beam 2 corresponds to the connection position between the corresponding platform beam 3 and the top main frame beam 2, and the length direction of the conversion column 4 is arranged obliquely from bottom to top along the length direction of the corresponding platform beam 3.

[0042] It can be understood that the multiple main columns 1 include four main columns 11 located at the four corners of the rectangular cross-section and at least one intermediate column 12 located between two adjacent main columns 11. For example, in the present embodiment, the cross-section of the main frame is square, and an intermediate column 12 is provided between two adjacent main columns 11. Two top main frame beams 2 are connected between the intermediate column 12 and the tops of the two adjacent main columns 11. There are a total of eight top main frame beams 2 at the top; the two ends of one platform beam 3 are respectively connected to the two opposite top main frame beams 2, and the two ends of another platform beam 3 are connected to another group of two opposite top main frame beams 2. Of course, a corresponding frame beam will be connected between the intermediate column 12 and the two adjacent main columns 11 and below the top.

[0043] The above-mentioned four conversion columns 4 are respectively hinged to the four top main frame beams 2 connected to the platform beams 3; the two conversion columns 4 connected to one group of two opposite top main frame beams 2 are located in the same vertical plane, and form an isosceles trapezoid with the corresponding top conversion frame beams 5; the two conversion columns 4 connected to the other group of two opposite top main frame beams 2 are located in the same vertical plane, and form an isosceles trapezoid with the corresponding top conversion frame beams 5; the four conversion columns 4 and the corresponding top conversion frame beams 5 enclose a four-prism with two bottom surfaces being isosceles trapezoids, two opposite side surfaces being rectangular, and the other two opposite side surfaces being square.

[0044] If the column base on the conversion layer of a large tower is rigidly connected, the concentrated moment of force generated by the bending moment of the column base and transmitted to the top main frame beam 2 will be too large. In this embodiment, the conversion column 4 and the top main frame beam 2 are hingedly connected to the column base, which can reduce the concentrated moment of force.

[0045] Taking into account the reduced platform area above the transfer layer, the transfer column 4 is an inclined column, and the component of the axial force of the inclined column will generate an out-of-plane horizontal force on the top main frame beam 2. Therefore, in this embodiment, a platform beam 3 is added as an out-of-plane support here, which together with the entire horizontal support system transmits the horizontal component of force to the main column 1.

[0046] Further, see Figures 2 to 5 At least one intermediate conversion frame beam 6 is connected between two adjacent conversion columns 4, and a plurality of vertical oblique support beams 7 are provided between two adjacent conversion columns 4, and both ends of the vertical oblique support beams 7 are connected to the corresponding top main frame beam 2, top conversion frame beam 5 or intermediate conversion frame beam 6.

[0047] Whether to set the intermediate conversion frame beam 6 and the number of the intermediate conversion frame beams 6 depends on the number of platform layers corresponding to the conversion layer. If the conversion layer corresponds to one platform, there is no need to set the intermediate conversion frame beam 6; Figure 4 The transfer layer shown in the figure corresponds to two platforms, and an intermediate transfer frame beam 6 is arranged between two adjacent transfer columns 4. The number and inclination angle of the vertical oblique support beams 7 are determined according to needs to meet the force requirements.

[0048] The entire conversion layer, refer to Figure 2 and Figure 3 In this direction, the two adjacent conversion columns 4 are arranged in parallel, and the distance between the columns and the center line from bottom to top can ensure that the second column distance L2 remains unchanged; refer to Figure 4 and Figure 5 In this direction, the two adjacent conversion columns 4 are arranged in a trapezoidal shape, and the distance between the columns and the center line can be reduced from the first column distance L1 to the third column distance L3 from bottom to top. Figure 1 In the plane, the horizontal force generated by the foot of the conversion column 4 is transmitted to the main column 1 of the lower layer through the platform beam 3 and the top main frame beam 2, and finally to the foundation. In the vertical direction, it forms a lateral force resistance system together with the vertical oblique support beam 7 to ensure the inter-story displacement ratio.

[0049] In order to facilitate installation and connection, the conversion column 4 is a cross column, and the main column 1 is an I-beam column. Figure 6 The web plate surface of the I-beam column is vertically arranged, and the cross column and the frame beams of each platform are bidirectionally rigidly connected. Specifically, the corresponding flange plate of the cross column is connected to the corresponding top conversion frame beam 5 or the corresponding middle conversion frame beam 6.

[0050] Considering the limited width of the flange of the top main frame beam 2, in this embodiment, the height of the cross column is reduced in the direction of the flange of the top main frame beam 2. Figure 7 and Figure 8The plate surface of one of the webs of the conversion column 4 is perpendicular to the plate surface of the web of the top main frame beam 2, and the web of the conversion column 4 includes an upper web 41 and a lower web 42 connected up and down, the width of the lower web 42 gradually decreases from top to bottom, and the bottom end width of the lower web 42 is smaller than the width of the flange plate of the top main frame beam 2. The bottom end width of the lower web 42 is preferably 2 / 3 of the width of the flange plate of the top main frame beam 2 to ensure the force requirements.

[0051] Specifically, refer to Figures 6 to 8 The two webs of the cross column are perpendicular to each other, the plate surface of one web is vertically arranged and perpendicular to the plate surface of the web of the top main frame beam 2, and the width of the lower part of the web is gradually reduced downward; and of the two flange plates on both sides of the lower web 42, the plate surface of the flange plate located on the outside is vertically arranged, and the plate surface of the flange plate located on the inside is inclined; the plate surfaces of the two flange plates on both sides of the upper web 41 are both inclined. The plate surface of the other web of the cross column is inclined and inclined along the length direction of the entire cross column, and the plate surfaces of the two flange plates on both sides of the web are vertically arranged and perpendicular to the plate surface of the web of the top main frame beam 2.

[0052] Since the width of the lower web 42 of the cross column is gradually reduced, in order to ensure that the pressure area remains unchanged, the cross column web with a reduced height range is thickened in this embodiment (the thickening thickness is determined by calculating the pressure area). Figure 8 A first thickening layer 421 is provided on the lower web 42 , and a second thickening layer 43 is provided at the lower part of another web in the conversion column 4 .

[0053] For the thickened part of the web of the cross column, generally the lengths of the thickened parts of the two webs are different. For example, the length of the second thickened layer 43 is greater than the length of the first thickened layer 421. The lengths of the two differ by 300 mm, for example, to avoid cross welds. The lower end of each thickened layer is planed and tightened to be connected to the corner weld of the column base plate 46 described below.

[0054] Further, see Figure 7 and Figure 8 , transverse reinforcing ribs 44 are provided on the two webs of the conversion column 4 and at the joint positions corresponding to the upper web 41 and the lower web 42. The transverse reinforcing ribs 44 are located at the bending position of the cross column flange, perpendicular to the original flange direction (the length direction of the transverse reinforcing ribs 44 on one of the webs of the conversion column 4 is perpendicular to the plate surface of the flange plates on both sides of the upper web 41. The length direction of the transverse reinforcing ribs 44 on the other web is perpendicular to the plate surface of the flange plates on both sides of the web), and are welded to the flange cuts in both directions of the cross column to locally reinforce this position.

[0055] Reference Figure 7 A conversion vertical stiffener 45 is provided at the lower part of another web in the conversion column 4 along its length direction.

[0056] Generally, two conversion vertical stiffeners 45 are provided at the lower part of the other web and are symmetrically distributed on both sides of one of the webs of the conversion column 4, that is, along the span direction of the top main frame beam 2, two conversion vertical stiffeners 45 are symmetrically arranged, and the lower ends of the conversion vertical stiffeners 45 are planed and tightened, and are connected to the column bottom plate 46 described below by fillet welds.

[0057] Furthermore, the hinge between the conversion column 4 and the top main frame beam 2 can be realized as follows:

[0058] Reference Figures 7 to 9 A column base plate 46 is connected to the bottom end of the conversion column 4, a retaining ring 47 is provided between the top main frame beam and the column base plate 46, a pad 48 is provided inside the retaining ring 47, a gap is left between the pad 48 and the inner ring of the retaining ring 47, the thickness of the pad 48 is greater than the thickness of the retaining ring 47, a gap is left between the top surface of the retaining ring 47 and the bottom surface of the column base plate 46, and the bottom surface of the retaining ring 47 abuts on the top surface of the top main frame beam 2; the retaining ring 47, the top main frame beam 2 and the column base plate 46 are connected by passing a plurality of fasteners 471, the top surface of the pad 48 is connected to the column base plate 46, the bottom surface of the pad 48 abuts on the top surface of the top main frame beam 2 and the pad 48 can rotate in the retaining ring 47.

[0059] The fastener 471 can be, for example, a bolt. The pad 48 is connected to the column base plate 46 by a corner weld and is placed on the top of the flange plate of the top main frame beam 2. The retaining ring 47 can be, for example, a rectangular ring body, the length direction of which is arranged along the length direction of the flange plate of the top main frame beam 2. The pad 48 is a rectangular block. A gap of 1 mm is left between the retaining ring 47 and the pad 48, and the four sides are milled flat. The pad 48 is not welded to the flange of the top main frame beam 2, and the bottom of the pad 48 is provided with rounded corners at the four bottom edges to ensure the rotation ability of the pad 48 in two directions, namely, the rotation ability in the length direction of the top main frame beam 2 and the rotation ability perpendicular to the length direction. The pad 48 is a rectangular block and its rotation ability is ensured by rounding the bottom corners to achieve the above-mentioned hinge function, which can ensure the bearing area of ​​the hinge position.

[0060] Furthermore, main body vertical stiffeners 21 are provided on both sides of the web of the top main body frame beam 2, and frame beam stiffeners 22 are provided on the bottom surface of the top flange plate of the top main body frame beam 2. The main body vertical stiffeners 21 can be made of rectangular plates, and the plate surface is perpendicular to the plate surface of the web of the top main body frame beam 2. The rectangular plate is welded to the two flange plates and the web of the top main body frame beam 2, and the rectangular plate is located in the middle of the above-mentioned column bottom plate 46. Frame beam stiffeners 22 are symmetrically added to the bottom of the flange plate of the top main body frame beam 2 within the width of the retaining ring 47 (symmetrical about the main body vertical stiffeners 21), the upper end is planed and tightened, and connected with the flange plate and web of the top main body frame beam 2 by fillet welds.

[0061] The entire conversion column 4 is connected to the top main frame beam 2 through a pad 48 and bolts, which can reduce the force-bearing surface of the column foot and ensure the column foot's ability to rotate in two directions; the pad 48 is used to bear the vertical force and horizontal force of the upper frame, and the bolt is used to bear the vertical tension of the upper frame; transverse stiffeners 44 are added to bear the component force perpendicular to the flange direction generated by the flange bending; the top main frame beam 2 has frame beam stiffeners 22 symmetrically added within the range of the retaining ring 47 to transmit the vertical force to the top main frame beam 2.

[0062] In summary, the tower structure of this embodiment specifically proposes a new scheme and node method for the column foot at the transfer layer of a large tower, which solves the design problems of large vertical force, large horizontal force, and strict interlayer displacement requirements for the column foot of the transfer layer of the large tower structure. It is suitable for the design of the column foot node of the transfer layer of a large tower, and meets the structural design needs of the change in the platform area of ​​the large tower frame. The scheme and node design comprehensively consider the platform beam 3, the vertical support system, and the horizontal support system, and have the advantages of clear force, reliable force transmission, and strong lateral force resistance. It has a very high reference significance for the column foot node of the transfer layer of a large tower, and therefore has good market promotion value and significant market application value.

[0063] The above is only an illustrative embodiment of the utility model, and is not intended to limit the scope of the utility model. Any equivalent changes and modifications made by any technician in the field without departing from the concept and principle of the utility model should fall within the scope of protection of the utility model.

Claims

1. A tower structure, characterized in that: include: A main frame, comprising a plurality of main columns arranged at intervals in the circumferential direction and a top main frame beam connected between the tops of two adjacent main columns; The conversion layer frame comprises a plurality of conversion columns arranged at circumferential intervals, wherein the conversion columns are inclined columns, the bottom ends of the conversion columns are hinged to the corresponding top main frame beams, the tops of two adjacent conversion columns are connected with a top conversion frame beam, and the frame area enclosed by the tops of the plurality of conversion columns is smaller than the frame area enclosed by the tops of the plurality of main columns.

2. The tower structure according to claim 1, characterized in that: The cross section of the main frame is rectangular, and the main frame further comprises two platform beams arranged in parallel and spaced apart, and the two ends of the platform beams are respectively connected to the two top main frame beams arranged oppositely; There are four conversion columns, the bottom ends of the conversion columns correspond to the hinged positions of the corresponding top main frame beams and the connection positions of the corresponding platform beams and the top main frame beams, and the length directions of the conversion columns are arranged obliquely from bottom to top along the length directions of the corresponding platform beams.

3. The tower structure according to claim 1, characterized in that: At least one intermediate conversion frame beam is connected between two adjacent conversion columns, and a plurality of vertical oblique support beams are provided between two adjacent conversion columns, and both ends of the vertical oblique support beams are connected to the corresponding top main frame beam, the top conversion frame beam or the intermediate conversion frame beam.

4. The tower structure according to claim 1, characterized in that: The conversion column is a cross column, the main column is an I-beam column, the plate surface of one of the webs of the conversion column is perpendicular to the plate surface of the web of the top main frame beam, and the web of the conversion column includes an upper web and a lower web connected up and down, the width of the lower web gradually decreases from top to bottom, and the bottom end width of the lower web is smaller than the width of the flange plate of the top main frame beam.

5. The tower structure according to claim 4, characterized in that: A first thickening layer is provided on the lower web, and a second thickening layer is provided on the lower part of another web in the conversion column.

6. The tower structure according to claim 4, characterized in that: Transverse reinforcing ribs are provided on the two webs of the conversion column and at the butt joint positions corresponding to the upper web and the lower web.

7. The tower structure according to claim 4, characterized in that: A conversion vertical stiffener is provided at the lower part of another web in the conversion column along its length direction.

8. The tower structure according to claim 1, characterized in that: A column base plate is connected to the bottom end of the conversion column, a retaining ring is provided between the top main frame beam and the column base plate, a pad is provided in the retaining ring, a gap is left between the pad and the inner ring of the retaining ring, the thickness of the pad is greater than the thickness of the retaining ring, a gap is left between the top surface of the retaining ring and the bottom surface of the column base plate, and the bottom surface of the retaining ring abuts against the top surface of the top main frame beam; the retaining ring, the top main frame beam and the column base plate are connected by passing a plurality of fasteners, the pad is connected to the column base plate, and the pad can rotate in the retaining ring.

9. The tower structure according to claim 8, characterized in that: The retaining ring is a rectangular ring body, the cushion block is a rectangular block, and the bottom of the cushion block is provided with a rounded corner so that the cushion block can rotate in the retaining ring.

10. The tower structure according to claim 4, characterized in that: Main body vertical reinforcing ribs are arranged on both sides of the web plate of the top main body frame beam, and frame beam reinforcing ribs are arranged on the bottom surface of the top flange plate of the top main body frame beam.

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