Aerial segmented installation method for wing curve overhanging steel box frame

Abstract

The invention discloses an overhead sectional installation method for a wing curved overhanging steel box frame. The overhead sectional installation method comprises the steps that a middle truss and side trusses are separated according to composition components; a first component and a second component of two middle trusses are installed on the upper portion of the outer side of the steel structure tower; first middle steel beams are arranged between the first horizontal cantilever steel beams and between the first horizontal steel beams; side trusses are installed on the two sides of the upper portion of the outer side of the steel structure tower respectively; mounting a third component and a fourth component on the second component; the second horizontal cantilever steel beams, the second horizontal steel beams and the third component are collinear to form roof middle beams, the fourth horizontal cantilever steel beams, the fourth horizontal steel beams and the fifth horizontal steel beams are collinear to form roof side beams, and second middle steel beams are arranged between the two roof middle beams and between the roof side beams and the roof middle beams. According to the aerial segmented installation method for the wing curved overhanging steel box frame, the installation sequence design is reasonable and ingenious, stress is stable in the overall installation process, the overall structure stability is high, and the installation efficiency can be improved easily.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure buildings, and in particular to an aerial segmented installation method for a wing-curved cantilevered steel box frame. Background Art

[0002] With the vigorous development of the construction industry, large, complex and peculiar building structures continue to emerge, especially the steel-structured tower buildings with a "large upper part and small lower part inverted cone-shaped" and double-wing curved shape. The cross-section of the inclined support components of the cantilevered structure on both wings of the building is box-shaped, with the maximum steel box section height of 700mm and width of 500mm. The tower is surrounded by inclined supports, horizontal steel beams and vertical steel box columns to form a steel box frame, which expands and cantilevers outward layer by layer. The farthest ends of the structures on the east and west sides are 22.9m away from the center of the vertical main load-bearing steel columns. The total cantilever length of the cantilever structures on the east and west sides accounts for 48.2% of the length of the main structure of the building in this direction, and the vertical distance from the top surface of the cantilevered structures on both sides of the wing curve to the ground is 22.8m. In the main structure installation project of this type of building, the segmented and zoned installation method of the giant wing-curved cantilever structure becomes a key factor that must be considered in advance before the construction of the steel structure project. On the one hand, if the traditional integral installation is followed, the overall weight is large, the volume is large, and the lifting and positioning are difficult, which will reduce the construction efficiency; on the other hand, if the segmentation and installation sequence is unreasonable, it is likely to cause large local forces during the subsequent installation process, resulting in the risk of collapse, or poor overall structural stability. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an aerial segmented installation method for a wing-curved cantilever steel box frame with a reasonable and ingenious installation sequence design, which makes the overall installation process stable, the overall structural stability is strong, and is conducive to improving the installation efficiency.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A method for installing a wing-curved cantilevered steel box frame in sections in the air comprises the following steps:

[0006] S1. Separate the middle and side beams according to their components;

[0007] The components of the intermediate frame include a first component, a second component, a third component and a fourth component;

[0008] The first component comprises a first arc-shaped steel box, a first oblique tie rod and a second oblique tie rod, a first butt joint portion, a second butt joint portion and a third butt joint portion are provided in the middle of the outer convex arc surface of the first arc-shaped steel box, one end of the first oblique tie rod is fixedly connected to the first butt joint portion, and one end of the second oblique tie rod is fixedly connected to the second butt joint portion;

[0009] The second component includes a first horizontal cantilever steel beam, a first horizontal steel beam and a first vertical steel box column, wherein the first horizontal cantilever steel beam and the first horizontal steel beam are respectively fixed on both sides of the middle of the first vertical steel box column and are collinear, and a first externally cantilevered arc section is provided at the bottom of one end of the first horizontal cantilever steel beam away from the first vertical steel box column;

[0010] The third member is a horizontal steel beam member;

[0011] The fourth component includes a second horizontal cantilever steel beam, a second horizontal steel beam and a second vertical steel box column, wherein the second horizontal cantilever steel beam and the second horizontal steel beam are respectively fixed on both sides of the top of the second vertical steel box column and are collinear;

[0012] The components of the side frame include a fifth component, a sixth component, a seventh component, an eighth component and a ninth component;

[0013] The fifth component includes an oblique support steel box and a third horizontal steel beam, one end of the third horizontal steel beam is fixedly connected to the middle of the oblique support steel box;

[0014] The sixth component includes a fourth horizontal steel beam, a fifth horizontal steel beam and a third vertical steel box column, wherein the fourth horizontal steel beam and the fifth horizontal steel beam are respectively fixedly connected to the top of the third vertical steel box column and are collinear;

[0015] The seventh component includes a second arc-shaped steel box and a fourth vertical steel box column, and the bottom end of the fourth vertical steel box column is fixedly connected to the middle part of the outer convex arc surface of the second arc-shaped steel box;

[0016] The eighth component includes a third horizontal cantilever steel beam, a sixth horizontal steel beam and an inclined beam, wherein the third horizontal cantilever steel beam is fixedly connected to the sixth horizontal steel beam and is collinear, the bottom end of the inclined beam is fixedly connected to the third horizontal cantilever steel beam, and the bottom of the third horizontal cantilever steel beam is provided with a second externally cantilevered arc segment;

[0017] The ninth component includes a fifth vertical steel box column and a fourth horizontal cantilever steel beam, and the top of the fifth vertical steel box column is fixedly connected to the middle of the fourth horizontal cantilever steel beam;

[0018] S2, installing the first component and the second component of the two middle beams at the middle position of the upper outer part of the steel structure tower, including the following sub-steps:

[0019] S21, hoisting the first component to a designated position outside the steel structure tower, and fixing the bottom end of the first arc-shaped steel box, the other end of the second inclined rod, and the other end of the first inclined rod to the steel structure tower through temporary fixing mechanisms;

[0020] S22, hoisting the second component above the first component, fixing the bottom end of the first outwardly suspended arc segment to the top end of the first arc-shaped steel box through a temporary fixing mechanism, fixing the end of the first horizontal steel beam away from the first vertical steel box column to the steel structure tower through a temporary fixing mechanism, and butting the bottom end of the first vertical steel box column to the third butting portion;

[0021] S23, after determining the positions of the first component and the second component, welding the nodes of the temporary connections between the first component, the second component and the steel structure tower;

[0022] S3, setting a first intermediate steel beam between the first horizontal cantilever steel beams of the two intermediate beams and between the first horizontal steel beams;

[0023] S4, installing side beams at both sides of the upper outer side of the steel structure tower, including the following sub-steps:

[0024] S41, fixing the bottom end of the oblique support steel box and the other end of the third horizontal steel beam to the steel structure tower through temporary fixing mechanisms respectively;

[0025] S42, the bottom end of the third vertical steel box column is fixedly connected to the middle part of the oblique support steel box through a temporary fixing mechanism, the end of the fourth horizontal steel beam away from the third vertical steel box column is fixedly connected to the top of the oblique support steel box through a temporary fixing mechanism, and the end of the fifth horizontal steel beam away from the third vertical steel box column is fixedly connected to the steel structure tower through a temporary fixing mechanism;

[0026] S43, the bottom end of the second arc-shaped steel box is fixedly connected to the steel structure tower through a temporary fixing mechanism, and the top end of the fourth vertical steel box column is fixedly connected to the middle part of the oblique support steel box through a temporary fixing mechanism;

[0027] S44, the bottom end of the second outer cantilever arc segment is fixedly connected to the top end of the second arc steel box through a temporary fixing mechanism, the end of the sixth horizontal steel beam away from the third horizontal cantilever steel beam is fixedly connected to the middle part of the oblique support steel box through a temporary fixing mechanism, and the top end of the inclined tension beam is fixedly connected to the top of the oblique support steel box through a temporary fixing mechanism;

[0028] S45, after determining the positions of the fifth component, the sixth component, the seventh component and the eighth component, welding the nodes of each temporary connection;

[0029] S46, the bottom end of the fifth vertical steel box column is fixedly connected to the third horizontal cantilever steel beam through a temporary fixing mechanism, and the fourth horizontal cantilever steel beam is fixedly connected to the top end of the oblique support steel box through a temporary fixing mechanism;

[0030] S47, after determining the position of the ninth component, welding the nodes of each temporary connection;

[0031] S5, installing the third component and the fourth component on the second component, including the following sub-steps:

[0032] S51, fixing one end of the third member to the top of the first vertical steel box column through a temporary fixing mechanism, and fixing the other end of the third member to the steel structure tower through a temporary fixing mechanism;

[0033] S52, the bottom end of the second vertical steel box column is fixedly connected to the first horizontal cantilever steel beam through a temporary fixing mechanism, and the end of the second horizontal steel beam away from the second vertical steel box column is fixedly connected to the top end of the first vertical steel box column through a temporary fixing mechanism;

[0034] S53, after determining the positions of the third component and the fourth component, welding the nodes of each temporary connection;

[0035] S6, the second horizontal cantilever steel beam, the second horizontal steel beam and the third member are collinear to form a roof middle beam, the fourth horizontal cantilever steel beam, the fourth horizontal steel beam and the fifth horizontal steel beam are collinear to form a roof side beam, and a second middle steel beam is arranged between the two roof middle beams and between the roof side beam and the corresponding roof middle beam.

[0036] As a further improvement of the above technical solution:

[0037] The first component, the second component, the third component, the fourth component, the fifth component, the sixth component, the seventh component, the eighth component and the ninth component are all lowered from the top of the steel structure tower to the installation position by a crane.

[0038] The installation positions of the first component and the fifth component are determined by adjusting the crane and the jacks arranged below.

[0039] After installation, the roof middle beam and the roof side beam are flush with the top surface of the steel structure tower.

[0040] A first connection portion is provided on the upper surface of the first horizontal cantilever steel beam, and in S52, the bottom end of the second vertical steel box column is connected to the first connection portion.

[0041] A horizontal docking section is provided at the top of the oblique support steel box. In S42, the fourth horizontal steel beam is connected to one end of the horizontal docking section. In S46, the fourth horizontal cantilever steel beam is connected to the other end of the horizontal docking section.

[0042] The middle upper surface of the inclined support steel box is provided with a first horizontal connecting head and a first vertical connecting head, the middle lower surface of the inclined support steel box is provided with a second horizontal connecting head and a second vertical connecting head, the third horizontal steel beam is connected to the first horizontal connecting head, in S42, the bottom end of the third vertical steel box column is connected to the first vertical connecting head, in S43, the top end of the fourth vertical steel box column is connected to the second vertical connecting head, and in S44, the sixth horizontal steel beam is connected to the second horizontal connecting head.

[0043] The first horizontal connector and the second horizontal connector are collinear, and the first vertical connector and the second vertical connector are collinear.

[0044] A third vertical connector is provided in the middle of the upper surface of the third horizontal cantilever steel beam, a second connector is provided on the side of the third vertical connector, the bottom end of the cable-stayed beam is connected to the second connector, and in S46, the bottom end of the fifth vertical steel box column is connected to the third vertical connector.

[0045] The third docking portion is vertically arranged, the first docking portion and the second docking portion are inclinedly arranged, and the second docking portion is located between the first docking portion and the third docking portion.

[0046] Compared with the prior art, the advantages of the present invention are:

[0047] The aerial segmented installation method of the wing-curved cantilever steel box frame, on the one hand, adopts the step-by-step lifting sequence of "the front part of the middle frame first, the side frame following, and the rear part of the middle frame last", forming a stable force from the local to the whole. On the one hand, each step of the installation process is stable, there will be no large local force, and the overall structural stability is strong, and there will be no risk of collapse; on the other hand, it will not cause large local forces on the steel structure tower, and will not have an adverse effect on the original stable structure of the steel structure tower. In addition, the overall installation process is temporarily fixed in sections, and then the nodes are welded after the position is determined, which can improve the overall installation accuracy. The aerial segmented installation method of the wing-curved cantilever steel box frame has a reasonable and ingenious installation sequence design, which makes the overall installation process stable, the overall structural stability is strong, and it is conducive to improving installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic diagram of the main structure after the first component of the aerial segmented installation method of the wing-curved cantilevered steel box frame of the present invention is installed.

[0049] Figure 2 It is a schematic diagram of the main structure after the second component of the aerial segmented installation method of the wing-curved cantilever steel box frame of the present invention is installed.

[0050] Figure 3It is a schematic diagram of the top view of the structure after the second component of the aerial segmented installation method of the wing-curved cantilevered steel box frame of the present invention is installed.

[0051] Figure 4 It is a schematic diagram of the top view structure after the first intermediate steel beam of the aerial segmented installation method of the wing-curved cantilever steel box frame of the present invention is installed.

[0052] Figure 5 It is a schematic diagram of the main structure after the fifth component of the aerial segmented installation method of the wing-curved cantilever steel box frame of the present invention is installed.

[0053] Figure 6 It is a schematic diagram of the main structure after the sixth component of the aerial segmented installation method of the wing-curved cantilevered steel box frame of the present invention is installed.

[0054] Figure 7 It is a schematic diagram of the main structure after the seventh component of the aerial segmented installation method of the wing-curved cantilever steel box frame of the present invention is installed.

[0055] Figure 8 It is a schematic diagram of the main structure after the eighth component of the aerial segmented installation method of the wing-curved cantilevered steel box frame of the present invention is installed.

[0056] Fig. 9 It is a schematic diagram of the main structure after the ninth component of the aerial segmented installation method of the wing-curved cantilever steel box frame of the present invention is installed.

[0057] Fig.10 It is a schematic diagram of the top view structure after the ninth component of the aerial segmented installation method of the wing-curved cantilevered steel box frame of the present invention is installed.

[0058] Fig.11 It is a schematic diagram of the main structure after the third component of the aerial segmented installation method of the wing-curved cantilevered steel box frame of the present invention is installed.

[0059] Fig.12 It is a schematic diagram of the main structure after the fourth component of the aerial segmented installation method of the wing-curved cantilever steel box frame of the present invention is installed.

[0060] Fig.13 It is a schematic diagram of the top structure of the wing-curved cantilevered steel box frame aerial segmented installation method after the second intermediate steel beam is installed.

[0061] Fig.14 It is a schematic diagram of the overall structure of the middle beam and the steel structure tower of the aerial segmented installation method of the wing-curved cantilevered steel box frame of the present invention.

[0062] Fig.15 It is a schematic diagram of the overall structure of the side beams and the steel structure tower of the aerial segmented installation method of the wing-curved cantilevered steel box frame of the present invention.

[0063] The symbols in the figure represent:

[0064] 1. First component; 10. Steel structure tower; 101. Through temporary fixing mechanism; 11. First arc-shaped steel box; 111. First docking part; 112. Second docking part; 113. Third docking part; 12. First diagonal tie rod; 13. Second diagonal tie rod; 2. Second component; 21. First horizontal cantilever steel beam; 211. First external cantilever arc segment; 212. First connecting part; 22. First horizontal steel beam; 23. First vertical steel box column; 24. First middle steel beam; 3. Third component; 4. Fourth component; 41. Second horizontal cantilever steel beam; 42. Second horizontal steel beam; 43. Second vertical steel box column; 44. Second middle steel beam; 5. Fifth component; 51. Diagonal support steel box; 5 11. Horizontal docking section; 512. First horizontal connector; 513. First vertical connector; 514. Second horizontal connector; 515. Second vertical connector; 52. Third horizontal steel beam; 6. Sixth member; 61. Fourth horizontal steel beam; 62. Fifth horizontal steel beam; 63. Third vertical steel box column; 7. Seventh member; 71. Second arc-shaped steel box; 72. Fourth vertical steel box column; 8. Eighth member; 81. Third horizontal cantilever steel beam; 811. Second external cantilever arc-shaped section; 812. Third vertical connector; 813. Second connecting part; 82. Sixth horizontal steel beam; 83. Cable-stayed beam; 9. Ninth member; 91. Fifth vertical steel box column; 92. Fourth horizontal cantilever steel beam. DETAILED DESCRIPTION

[0065] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0066] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0067] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0068] In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0069] Figures 1 to 15 An embodiment of the method for installing a wing-curved cantilevered steel box frame in aerial sections of the present invention is shown. The method for installing a wing-curved cantilevered steel box frame in aerial sections of the present embodiment comprises the following steps:

[0070] S1. Separate the middle and side beams according to their components;

[0071] The components of the middle frame include a first component 1, a second component 2, a third component 3 and a fourth component 4;

[0072] The first component 1 includes a first arc-shaped steel box 11, a first diagonal tie rod 12 and a second diagonal tie rod 13. A first docking portion 111, a second docking portion 112 and a third docking portion 113 are provided in the middle of the outer convex arc surface of the first arc-shaped steel box 11. One end of the first diagonal tie rod 12 is fixedly connected to the first docking portion 111, and one end of the second diagonal tie rod 13 is fixedly connected to the second docking portion 112.

[0073] The second component 2 includes a first horizontal cantilever steel beam 21, a first horizontal steel beam 22 and a first vertical steel box column 23. The first horizontal cantilever steel beam 21 and the first horizontal steel beam 22 are respectively fixed on both sides of the middle of the first vertical steel box column 23 and are collinear. A first externally cantilevered arc section 211 is provided at the bottom of one end of the first horizontal cantilever steel beam 21 away from the first vertical steel box column 23.

[0074] The third member 3 is a horizontal steel beam member;

[0075] The fourth member 4 includes a second horizontal cantilever steel beam 41, a second horizontal steel beam 42 and a second vertical steel box column 43, wherein the second horizontal cantilever steel beam 41 and the second horizontal steel beam 42 are respectively fixed to both sides of the top of the second vertical steel box column 43 and are collinear;

[0076] The components of the side frame include a fifth component 5, a sixth component 6, a seventh component 7, an eighth component 8 and a ninth component 9;

[0077] The fifth member 5 includes an oblique support steel box 51 and a third horizontal steel beam 52, one end of the third horizontal steel beam 52 is fixedly connected to the middle of the oblique support steel box 51;

[0078] The sixth member 6 includes a fourth horizontal steel beam 61, a fifth horizontal steel beam 62 and a third vertical steel box column 63. The fourth horizontal steel beam 61 and the fifth horizontal steel beam 62 are respectively fixedly connected to the top of the third vertical steel box column 63 and are collinear.

[0079] The seventh component 7 includes a second arc-shaped steel box 71 and a fourth vertical steel box column 72, and the bottom end of the fourth vertical steel box column 72 is fixedly connected to the middle part of the outer convex arc surface of the second arc-shaped steel box 71;

[0080] The eighth component 8 includes a third horizontal cantilever steel beam 81, a sixth horizontal steel beam 82 and an inclined beam 83. The third horizontal cantilever steel beam 81 is fixedly connected to the sixth horizontal steel beam 82 and is collinear. The bottom end of the inclined beam 83 is fixedly connected to the third horizontal cantilever steel beam 81. The bottom of the third horizontal cantilever steel beam 81 is provided with a second externally cantilevered arc section 811.

[0081] The ninth component 9 includes a fifth vertical steel box column 91 and a fourth horizontal cantilever steel beam 92, and the top of the fifth vertical steel box column 91 is fixedly connected to the middle of the fourth horizontal cantilever steel beam 92;

[0082] S2, installing the first component 1 and the second component 2 of the two middle beams at the middle position of the upper outer part of the steel structure tower 10, including the following sub-steps:

[0083] S21, such as Figure 2 As shown, the first component 1 is hoisted to a designated position outside the steel structure tower, and the bottom end of the first arc-shaped steel box 11, the other end of the second inclined rod 13 and the other end of the first inclined rod 12 are fixedly connected to the steel structure tower 10 through a temporary fixing mechanism 101 respectively;

[0084] S22, such as Figure 3 As shown, the second component 2 is hoisted above the first component 1, the bottom end of the first outwardly suspended arc segment 211 is fixedly connected to the top end of the first arc-shaped steel box 11 through a temporary fixing mechanism 101, the end of the first horizontal steel beam 22 away from the first vertical steel box column 23 is fixedly connected to the steel structure tower 10 through a temporary fixing mechanism 101, and the bottom end of the first vertical steel box column 23 is butted with the third butt joint 113;

[0085] S23, after determining the positions of the first component 1 and the second component 2, welding the nodes of the temporary connection between the first component 1, the second component 2 and the steel structure tower 10;

[0086] S3, a first intermediate steel beam 24 is arranged between the first horizontal cantilever steel beams 21 of the two intermediate beams and between the first horizontal steel beams 22;

[0087] S4, such as Figure 4 As shown, the side beams are respectively installed on both sides of the upper outer side of the steel structure tower 10, including the following sub-steps:

[0088] S41, such as Figure 5 As shown, the bottom end of the oblique support steel box 51 and the other end of the third horizontal steel beam 52 are fixedly connected to the steel structure tower 10 through a temporary fixing mechanism 101 respectively;

[0089] S42, such as Figure 6 As shown, the bottom end of the third vertical steel box column 63 is fixedly connected to the middle of the oblique support steel box 51 through a temporary fixing mechanism 101, the end of the fourth horizontal steel beam 61 away from the third vertical steel box column 63 is fixedly connected to the top of the oblique support steel box 51 through a temporary fixing mechanism 101, and the end of the fifth horizontal steel beam 62 away from the third vertical steel box column 63 is fixedly connected to the steel structure tower 10 through a temporary fixing mechanism 101;

[0090] S43, such as Figure 7 As shown, the bottom end of the second arc-shaped steel box 71 is fixedly connected to the steel structure tower 10 through a temporary fixing mechanism 101, and the top end of the fourth vertical steel box column 72 is fixedly connected to the middle of the oblique support steel box 51 through a temporary fixing mechanism 101;

[0091] S44, such as Figure 8 As shown, the bottom end of the second outer cantilever arc segment 811 is fixedly connected to the top end of the second arc steel box 71 through a temporary fixing mechanism 101, the end of the sixth horizontal steel beam 82 away from the third horizontal cantilever steel beam 81 is fixedly connected to the middle of the oblique support steel box 51 through a temporary fixing mechanism 101, and the top end of the inclined tension beam 83 is fixedly connected to the top of the oblique support steel box 51 through a temporary fixing mechanism 101;

[0092] S45, after determining the positions of the fifth component 5, the sixth component 6, the seventh component 7 and the eighth component 8, welding the nodes of each temporary connection;

[0093] S46, such as Fig. 9 and Fig.10 As shown, the bottom end of the fifth vertical steel box column 91 is fixedly connected to the third horizontal cantilever steel beam 81 through a temporary fixing mechanism 101, and the fourth horizontal cantilever steel beam 92 is fixedly connected to the top end of the oblique support steel box 51 through a temporary fixing mechanism 101;

[0094] S47, after determining the position of the ninth component 9, welding the nodes of each temporary connection;

[0095] S5, installing the third component 3 and the fourth component 4 on the second component 2, including the following sub-steps:

[0096] S51, such as Fig.11As shown, one end of the third member 3 is fixedly connected to the top of the first vertical steel box column 23 through a temporary fixing mechanism 101, and the other end of the third member 3 is fixedly connected to the steel structure tower 10 through a temporary fixing mechanism 101;

[0097] S52, such as Fig.12 As shown, the bottom end of the second vertical steel box column 43 is fixedly connected to the first horizontal cantilever steel beam 21 through a temporary fixing mechanism 101, and the end of the second horizontal steel beam 42 away from the second vertical steel box column 43 is fixedly connected to the top of the first vertical steel box column 23 through a temporary fixing mechanism 101;

[0098] S53, after determining the positions of the third component 3 and the fourth component 4, welding the nodes of each temporary connection;

[0099] S6, such as Fig.13 As shown, the second horizontal cantilever steel beam 41, the second horizontal steel beam 42 and the third member 3 are collinear to form a roof middle beam, the fourth horizontal cantilever steel beam 92, the fourth horizontal steel beam 61 and the fifth horizontal steel beam 62 are collinear to form a roof side beam, and a second middle steel beam 44 is arranged between the two roof middle beams and between the roof side beam and the corresponding roof middle beam.

[0100] The present method for installing sections in the air of a wing-curved cantilevered steel box frame, on the one hand, adopts a step-by-step lifting sequence of installing a part of the middle frame first, followed by the side frame, and then the other part of the middle frame, that is, "the front part of the middle frame first, the side frame follows, and the rear part of the middle frame is the last", so as to form a stable force from the local to the whole. On the one hand, each step of the installation process is stable, there will be no large local force, and the overall structural stability is strong, and there will be no risk of collapse; on the other hand, it will not cause large local forces on the steel structure tower 10, and will not have an adverse effect on the original stable structure of the steel structure tower 10. In addition, the overall installation process is temporarily fixed in sections, and then the nodes are welded after the position is determined, which can improve the overall installation accuracy. The installation sequence design of the present method for installing sections in the air of a wing-curved cantilevered steel box frame is reasonable and ingenious, so that the overall installation process is stable, the overall structural stability is strong, and it is conducive to improving the installation efficiency.

[0101] Furthermore, in this embodiment, the first component 1, the second component 2, the third component 3, the fourth component 4, the fifth component 5, the sixth component 6, the seventh component 7, the eighth component 8 and the ninth component 9 are all lowered from the top of the steel structure tower 10 to the installation position by a crane.

[0102] Compared with the traditional installation technology of setting up temporary support components at the bottom, the steel structure installation cost is reduced by about 20% (reducing the cost of setting up the support frame and reducing the cost of using the car crane), and the construction period is shortened by 15% (reducing the time of setting up the support frame, and the total construction period is 80 days according to the traditional installation process). Due to the reduction in the use of temporary support materials, it also has certain environmental benefits, reduces the generation of construction waste, and is in line with the concept of green building development.

[0103] Furthermore, in this embodiment, the installation positions of the first component 1 and the fifth component 5 are determined by adjusting the crane and the jack arranged below. The first component 1 and the fifth component 5 are positioned as the first stage, and the first stage positioning error is ≤3mm, and the overall structure cumulative error is ≤10mm.

[0104] Furthermore, in this embodiment, after installation, the roof middle beam and the roof side beam are flush with the top surface of the steel structure tower 10 .

[0105] Further, in this embodiment, the upper surface of the first horizontal cantilever steel beam 21 is provided with a first connection portion 212, and in S52, the bottom end of the second vertical steel box column 43 is connected to the first connection portion 212. The first connection portion 212 is vertically arranged.

[0106] Furthermore, in this embodiment, a horizontal docking section 511 is provided at the top end of the inclined support steel box 51, in S42, the fourth horizontal steel beam 61 is connected to one end of the horizontal docking section 511, and in S46, the fourth horizontal cantilever steel beam 92 is connected to the other end of the horizontal docking section 511.

[0107] Furthermore, in this embodiment, a first horizontal connecting head 512 and a first vertical connecting head 513 are provided on the middle upper surface of the inclined support steel box 51, a second horizontal connecting head 514 and a second vertical connecting head 515 are provided on the middle lower surface of the inclined support steel box 51, the third horizontal steel beam 52 is connected to the first horizontal connecting head 512, in S42, the bottom end of the third vertical steel box column 63 is connected to the first vertical connecting head 513, in S43, the top end of the fourth vertical steel box column 72 is connected to the second vertical connecting head 515, and in S44, the sixth horizontal steel beam 82 is connected to the second horizontal connecting head 514.

[0108] Furthermore, in this embodiment, the first horizontal connector 512 and the second horizontal connector 514 are collinear, and the first vertical connector 513 and the second vertical connector 515 are collinear.

[0109] Furthermore, in this embodiment, a third vertical connecting head 812 is provided in the middle of the upper surface of the third horizontal cantilever steel beam 81, a second connecting portion 813 is provided on the side of the third vertical connecting head 812, and the bottom end of the diagonal beam 83 is connected to the second connecting portion 813. In S46, the bottom end of the fifth vertical steel box column 91 is connected to the third vertical connecting head 812.

[0110] Further, in this embodiment, the third docking portion 113 is vertically disposed, the first docking portion 111 and the second docking portion 112 are obliquely disposed, and the second docking portion 112 is located between the first docking portion 111 and the third docking portion 113 .

[0111] This method of aerial segmented installation of wing-curved cantilevered steel box frame clarifies the division of assembly points of each rigid frame component, and the formation of block local units through assembly connection points. It also plans the lifting sequence of each block unit to ensure reasonable structural force during the construction process, thereby improving the safety and stability of the structure during the construction process.

[0112] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A method for installing a wing-curved cantilevered steel box frame in sections in the air, characterized in that: The steps include: S1. Separate the middle and side beams according to their components; The components of the intermediate frame include a first component (1), a second component (2), a third component (3) and a fourth component (4); The first component (1) comprises a first arc-shaped steel box (11), a first inclined brace (12) and a second inclined brace (13); a first docking portion (111), a second docking portion (112) and a third docking portion (113) are provided in the middle of the outer convex arc surface of the first arc-shaped steel box (11); one end of the first inclined brace (12) is fixedly connected to the first docking portion (111), and one end of the second inclined brace (13) is fixedly connected to the second docking portion (112); The second component (2) comprises a first horizontal cantilever steel beam (21), a first horizontal steel beam (22) and a first vertical steel box column (23); the first horizontal cantilever steel beam (21) and the first horizontal steel beam (22) are respectively fixed on both sides of the middle of the first vertical steel box column (23) and are collinear; a first externally cantilevered arc section (211) is provided at the bottom of one end of the first horizontal cantilever steel beam (21) away from the first vertical steel box column (23); The third member (3) is a horizontal steel beam member; The fourth component (4) comprises a second horizontal cantilever steel beam (41), a second horizontal steel beam (42) and a second vertical steel box column (43), wherein the second horizontal cantilever steel beam (41) and the second horizontal steel beam (42) are respectively fixed on both sides of the top of the second vertical steel box column (43) and are collinear; The components of the side frame include a fifth component (5), a sixth component (6), a seventh component (7), an eighth component (8) and a ninth component (9); The fifth component (5) comprises an oblique support steel box (51) and a third horizontal steel beam (52), one end of the third horizontal steel beam (52) being fixedly connected to the middle of the oblique support steel box (51); The sixth component (6) comprises a fourth horizontal steel beam (61), a fifth horizontal steel beam (62) and a third vertical steel box column (63), wherein the fourth horizontal steel beam (61) and the fifth horizontal steel beam (62) are respectively fixedly connected to the top of the third vertical steel box column (63) and are collinear; The seventh component (7) comprises a second arc-shaped steel box (71) and a fourth vertical steel box column (72), wherein the bottom end of the fourth vertical steel box column (72) is fixedly connected to the middle part of the outer convex arc surface of the second arc-shaped steel box (71); The eighth component (8) comprises a third horizontal cantilever steel beam (81), a sixth horizontal steel beam (82) and an inclined beam (83), wherein the third horizontal cantilever steel beam (81) is fixedly connected to the sixth horizontal steel beam (82) and is collinear, the bottom end of the inclined beam (83) is fixedly connected to the third horizontal cantilever steel beam (81), and the bottom of the third horizontal cantilever steel beam (81) is provided with a second outwardly cantilevered arc section (811); The ninth component (9) comprises a fifth vertical steel box column (91) and a fourth horizontal cantilevered steel beam (92), wherein the top end of the fifth vertical steel box column (91) is fixedly connected to the middle portion of the fourth horizontal cantilevered steel beam (92); S2, installing the first component (1) and the second component (2) of the two middle frames at the middle position of the upper outer part of the steel structure tower (10), comprising the following sub-steps: S21, hoisting the first component (1) to a designated position outside the steel structure tower, and fixing the bottom end of the first arc-shaped steel box (11), the other end of the second inclined rod (13), and the other end of the first inclined rod (12) to the steel structure tower (10) through a temporary fixing mechanism (101); S22, hoisting the second component (2) above the first component (1), fixing the bottom end of the first outwardly suspended arc segment (211) to the top end of the first arc-shaped steel box (11) through a temporary fixing mechanism (101), fixing the end of the first horizontal steel beam (22) away from the first vertical steel box column (23) to the steel structure tower (10) through a temporary fixing mechanism (101), and butting the bottom end of the first vertical steel box column (23) to the third butting portion (113); S23, after determining the positions of the first component (1) and the second component (2), welding the nodes of the temporary connection points of the first component (1), the second component (2) and the steel structure tower (10); S3, disposing a first intermediate steel beam (24) between the first horizontal cantilever steel beams (21) of the two intermediate beams and between the first horizontal steel beams (22); S4, installing side frames at both sides of the upper outer side of the steel structure tower (10), including the following sub-steps: S41, fixing the bottom end of the oblique support steel box (51) and the other end of the third horizontal steel beam (52) to the steel structure tower (10) through a temporary fixing mechanism (101); S42, the bottom end of the third vertical steel box column (63) is fixedly connected to the middle of the oblique support steel box (51) through a temporary fixing mechanism (101), the end of the fourth horizontal steel beam (61) away from the third vertical steel box column (63) is fixedly connected to the top of the oblique support steel box (51) through a temporary fixing mechanism (101), and the end of the fifth horizontal steel beam (62) away from the third vertical steel box column (63) is fixedly connected to the steel structure tower (10) through a temporary fixing mechanism (101); S43, the bottom end of the second arc-shaped steel box (71) is fixedly connected to the steel structure tower (10) through a temporary fixing mechanism (101), and the top end of the fourth vertical steel box column (72) is fixedly connected to the middle part of the oblique support steel box (51) through a temporary fixing mechanism (101); S44, the bottom end of the second outwardly cantilevered arc segment (811) is fixedly connected to the top end of the second arc-shaped steel box (71) through a temporary fixing mechanism (101), the end of the sixth horizontal steel beam (82) away from the third horizontal cantilevered steel beam (81) is fixedly connected to the middle of the oblique support steel box (51) through a temporary fixing mechanism (101), and the top end of the inclined tension beam (83) is fixedly connected to the top of the oblique support steel box (51) through a temporary fixing mechanism (101); S45, after determining the positions of the fifth component (5), the sixth component (6), the seventh component (7) and the eighth component (8), welding the nodes of each temporary connection; S46, the bottom end of the fifth vertical steel box column (91) is fixedly connected to the third horizontal cantilever steel beam (81) through a temporary fixing mechanism (101), and the fourth horizontal cantilever steel beam (92) is fixedly connected to the top end of the oblique support steel box (51) through a temporary fixing mechanism (101); S47, after determining the position of the ninth component (9), welding the nodes of each temporary connection; S5, installing the third component (3) and the fourth component (4) on the second component (2), comprising the following sub-steps: S51, one end of the third component (3) is fixedly connected to the top of the first vertical steel box column (23) through a temporary fixing mechanism (101), and the other end of the third component (3) is fixedly connected to the steel structure tower (10) through the temporary fixing mechanism (101); S52, the bottom end of the second vertical steel box column (43) is fixedly connected to the first horizontal cantilever steel beam (21) through a temporary fixing mechanism (101), and the end of the second horizontal steel beam (42) away from the second vertical steel box column (43) is fixedly connected to the top end of the first vertical steel box column (23) through a temporary fixing mechanism (101); S53, after determining the positions of the third component (3) and the fourth component (4), welding the nodes of each temporary connection; S6, the second horizontal cantilever steel beam (41), the second horizontal steel beam (42) and the third member (3) are collinearly formed to form a roof middle beam, the fourth horizontal cantilever steel beam (92), the fourth horizontal steel beam (61) and the fifth horizontal steel beam (62) are collinearly formed to form a roof side beam, and a second middle steel beam (44) is arranged between the two roof middle beams and between the roof side beam and the corresponding roof middle beam.

2. The aerial segmented installation method of the wing-curved cantilevered steel box frame according to claim 1 is characterized in that: The first component (1), the second component (2), the third component (3), the fourth component (4), the fifth component (5), the sixth component (6), the seventh component (7), the eighth component (8) and the ninth component (9) are all lowered from the top of the steel structure tower (10) to the installation position by a crane.

3. The aerial segmented installation method of the wing-curved cantilevered steel box frame according to claim 2 is characterized in that: The installation positions of the first component (1) and the fifth component (5) are determined by adjusting the crane and the jacks arranged below.

4. The aerial segmented installation method of the wing-curved cantilevered steel box frame according to claim 1 is characterized in that: After installation, the roof middle beam and the roof side beam are flush with the top surface of the steel structure tower (10).

5. The aerial segmented installation method of the wing-curved cantilevered steel box frame according to claim 1 is characterized in that: The upper surface of the first horizontal cantilever steel beam (21) is provided with a first connecting portion (212), and in S52, the bottom end of the second vertical steel box column (43) is connected to the first connecting portion (212).

6. The aerial segmented installation method of the wing-curved cantilevered steel box frame according to claim 1 is characterized in that: A horizontal docking section (511) is provided at the top end of the inclined support steel box (51), and in S42, the fourth horizontal steel beam (61) is connected to one end of the horizontal docking section (511), and in S46, the fourth horizontal cantilever steel beam (92) is connected to the other end of the horizontal docking section (511).

7. The aerial segmented installation method of the wing-curved cantilevered steel box frame according to claim 1 is characterized in that: The middle upper surface of the inclined support steel box (51) is provided with a first horizontal connection head (512) and a first vertical connection head (513), the middle lower surface of the inclined support steel box (51) is provided with a second horizontal connection head (514) and a second vertical connection head (515), the third horizontal steel beam (52) is connected to the first horizontal connection head (512), in S42, the bottom end of the third vertical steel box column (63) is connected to the first vertical connection head (513), in S43, the top end of the fourth vertical steel box column (72) is connected to the second vertical connection head (515), and in S44, the sixth horizontal steel beam (82) is connected to the second horizontal connection head (514).

8. The aerial segmented installation method of the wing-curved cantilevered steel box frame according to claim 7 is characterized in that: The first horizontal connector (512) and the second horizontal connector (514) are collinear, and the first vertical connector (513) and the second vertical connector (515) are collinear.

9. The aerial segmented installation method of a curved cantilever steel box frame according to any one of claims 1 to 8, characterized in that: A third vertical connector (812) is provided in the middle of the upper surface of the third horizontal cantilever steel beam (81), a second connecting portion (813) is provided on the side of the third vertical connector (812), the bottom end of the cable-stayed beam (83) is connected to the second connecting portion (813), and in S46, the bottom end of the fifth vertical steel box column (91) is connected to the third vertical connector (812).

10. The aerial segmented installation method of a curved cantilever steel box frame according to any one of claims 1 to 8, characterized in that: The third docking portion (113) is arranged vertically, the first docking portion (111) and the second docking portion (112) are arranged obliquely, and the second docking portion (112) is located between the first docking portion (111) and the third docking portion (113).

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