Sectional hoisting construction method for cast-in-place support of main tower cross beam

Abstract

The invention relates to the technical field of bridge construction, in particular to a main tower cross beam cast-in-place support segmented hoisting construction method which comprises the following steps that a first supporting support and a second supporting support are hoisted correspondingly and connected with embedded parts on two vertical segments correspondingly; the middle support is hoisted, so that the middle support is connected with the first supporting support and the second supporting support; and S6, the first stable support and the second stable support are hoisted so that the first stable support can be connected with the first supporting support, the second stable support can be connected with the second supporting support, and the third stable support is hoisted so that the third stable support can be connected with the first stable support and the second stable support. The first supporting bracket, the second supporting bracket, the middle bracket, the first stabilizing bracket, the second stabilizing bracket and the third stabilizing bracket are mutually connected to form a whole so as to better bear force, and meanwhile, multiple positions in the first supporting bracket and the second supporting bracket are hinged, so that bending moment can be better released so as to improve the bearing capacity.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to a segmented hoisting construction method for a cast-in-place bracket of a main tower cross beam. Background Art

[0002] Conventional main tower beam construction adopts cast-in-place construction of ground-type steel pipe supports. The upper, middle and lower beam support systems are composed of steel pipe support foundations, steel pipe supports, cross braces and scissors braces, sand cylinders, distribution beams, Bailey trusses and bottom molds.

[0003] The lower crossbeam support column is supported on the bedrock between the pedestals, the middle and upper crossbeams are supported on the cast crossbeams, and corbel supports are provided near the tower wall.

[0004] The steel pipe columns are pre-processed in sections in the factory, and then installed and extended one by one on site. The verticality and top elevation are measured and controlled. After each layer of steel pipes is installed, the horizontal cross braces are immediately installed to form a frame structure. The steel pipe brackets are all connected by flanges. After the steel pipe columns are installed, the sand cylinder and steel beams are installed on the top, and then the Bailey truss distribution beam is installed and the bottom formwork is laid.

[0005] The existing solutions have the following problems: (1) Since the steel pipe support needs to be installed from the lower beam upward, wind vibration may occur when the wind load is strong.

[0006] (2) The use of steel materials such as steel pipe supports is large, which puts a heavy economic burden on the project.

[0007] (3) The steel pipe support adopts flange connection, which poses a high safety risk in high-altitude construction.

[0008] (4) There are many monitoring points during the construction process, which increases the difficulty of management.

[0009] (5) During construction, conflicts occur with the cross braces, increasing the difficulty of construction. Summary of the invention

[0010] The technical problem to be solved by the present invention is: in order to solve the technical problems in the prior art, the present invention provides a segmented hoisting construction method for a cast-in-place bracket of a main tower cross beam.

[0011] The technical solution adopted by the present invention to solve the technical problem is: a construction method for segmented hoisting of a cast-in-place bracket of a main tower cross beam, comprising the following steps: S1. Construct two vertical bottom sections of the main tower and construct the lower cross beam between the two vertical bottom sections; S2, construct the vertical section of the main tower by climbing formwork, and construct temporary horizontal braces between the two vertical sections after each climbing formwork construction; S3. During the construction of the vertical section, embedded parts are set on the side walls of the two vertical sections; S4, hoisting the first supporting bracket and the second supporting bracket respectively, and connecting them to the embedded parts on the two vertical sections respectively; S5, hoisting the intermediate bracket so that the intermediate bracket is located between the first supporting bracket and the second supporting bracket, and the intermediate bracket is connected to the first supporting bracket and the second supporting bracket; S6, hoisting the first stable bracket and the second stable bracket, so that the first stable bracket is connected to the first supporting bracket, so that the second stable bracket is connected to the second supporting bracket, hoisting the third stable bracket, and so that the third stable bracket is connected to the first stable bracket and the second stable bracket, and at the same time connecting the third stable bracket to the first supporting bracket, the second supporting bracket, and the intermediate bracket; S7. Install the sand box, distribution beam, Bailey beam, wooden square and bottom mold on the first stable support and the second stable support, then install the side mold on the bottom mold, and cast the upper beam through the bottom mold and the side mold.

[0012] The present invention provides a method for segmented hoisting construction of a cast-in-place bracket for a main tower beam, which realizes the installation of a first supporting bracket and a second supporting bracket through embedded parts, thereby facilitating the support of a bottom formwork. Compared with a solution using steel pipe columns, this solution occupies a small space and is not prone to wind vibration when the wind load is strong. At the same time, the steel consumption is small, and the economic burden on the project is relatively small. At the same time, this solution requires fewer nodes to be connected, has lower safety risks, fewer monitoring points during the construction process, and is less difficult to manage. During construction, there will be no conflict with the cross brace. In addition, the first supporting bracket and the second supporting bracket are reinforced by an intermediate bracket, a first stable bracket, a second stable bracket and a third stable bracket to improve the overall strength and ensure reliability, thereby solving the common problem that a large-span main tower can only be supported by ground-mounted steel pipes.

[0013] Furthermore, the embedded part includes a first embedded part, and the first embedded part is connected to a first stabilizing bracket.

[0014] Further, the embedded part further includes a second embedded part and a third embedded part, and the first supporting bracket includes a first oblique rod, a second oblique rod, a third oblique rod, a fourth oblique rod, a first vertical rod, a first cross rod and a second cross rod; One end of the first oblique rod is hinged to the second embedded part, and the other end is hinged to the first stable bracket; One end of the second oblique rod is hinged to the third embedded part, and the other end is hinged to the third stable bracket.

[0015] Furthermore, one end of the third diagonal rod, the fourth diagonal rod, the first cross rod, the second cross rod and the first vertical rod is hinged to the first diagonal rod, and the other end is hinged to the second diagonal rod.

[0016] Furthermore, the structure of the second supporting bracket is mirror-imaged to the structure of the first supporting bracket along the midpoint of the line connecting the two vertical segments.

[0017] Furthermore, the intermediate bracket includes a third crossbar, a fourth crossbar, a second vertical bar, a third vertical bar, a fourth vertical bar and a fifth vertical bar, two ends of the third crossbar are connected to two second crossbars, and two ends of the fourth crossbar are connected to two second diagonal bars.

[0018] Furthermore, one end of the second vertical rod and the fifth vertical rod is connected to the third cross rod, and the other end is connected to the fourth cross rod.

[0019] Furthermore, one end of the third vertical rod and the fourth vertical rod is connected to the third stable bracket, and the other end is connected to the fourth cross rod.

[0020] Furthermore, the first supporting bracket, the second supporting bracket, the first stabilizing bracket and the second stabilizing bracket are connected to the embedded parts through the ear plate seat. During hoisting, the ear plate seat is first connected to the first supporting bracket, the second supporting bracket, the first stabilizing bracket and the second stabilizing bracket, and then the ear plate seat is welded to the embedded parts.

[0021] Furthermore, when the first supporting bracket is lifted by the tower crane hook to the vicinity of the embedded part, the first supporting bracket is temporarily connected to the embedded part through the guide chain, and when the guide chain is subjected to stable force, the tower crane is unhooked.

[0022] The beneficial effects of the present invention are: 1. The first support bracket and the second support bracket are installed through embedded parts, which is convenient for supporting the bottom formwork. Compared with the steel pipe column solution, this solution occupies a small space and is not easy to produce wind vibration when the wind load is strong. At the same time, the amount of steel used is small, and the economic burden on the project is relatively small. At the same time, this solution requires fewer nodes to be connected, the safety risk is lower, the construction process has fewer monitoring points, and the management difficulty is small. During construction, there will be no conflict with the cross brace; in addition, the first support bracket and the second support bracket are strengthened by the intermediate bracket, the first stable bracket, the second stable bracket and the third stable bracket to improve the overall strength and ensure reliability, solving the common problem that the large-span main tower can only be supported by ground-type steel pipes; 2. During hoisting, first connect the ear plate seat with the first supporting bracket, the second supporting bracket, the first stable bracket and the second stable bracket, and then weld the ear plate seat with the embedded parts, which can reduce the number of procedures for high-altitude construction and reduce safety hazards; 3. When the first supporting bracket is lifted by the tower crane hook to the vicinity of the embedded part, the first supporting bracket is temporarily connected to the embedded part through the guide chain. When the guide chain is under stable force, the tower crane is unhooked and a temporary connection is achieved through the guide chain, which facilitates the tower crane hook to lift other brackets and improves construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0024] Figure 1 The present invention is a schematic flow chart of a method for segmented hoisting construction of a main tower cross beam cast-in-place bracket.

[0025] Figure 2 It is a schematic diagram of the overall structure of the main tower in the present invention.

[0026] Figure 3 It is a schematic diagram of the entire upper crossbeam support in the present invention.

[0027] Figure 4 It is a schematic diagram of the first supporting bracket and the intermediate bracket in the present invention.

[0028] Figure 5 It is a schematic diagram of the distribution beam, Bailey beam and bottom mold in the present invention.

[0029] Figure 6 It is a front view schematic diagram embodying the temporary cross brace in the present invention.

[0030] Figure 7 It is a top view schematic diagram embodying the temporary cross brace in the present invention.

[0031] Figure 8 yes Figure 6 A partial enlarged view of part A in the middle.

[0032] Fig. 9 yes Figure 6 A partial enlarged view of part B in the middle.

[0033] Fig.10 It is a schematic diagram of the invention showing the reinforced vertical side and the reinforced horizontal side.

[0034] In the figure: 1, vertical bottom section; 11, lower crossbeam; 12, upper crossbeam; 2, vertical section; 21, first embedded part; 22, second embedded part; 23, third embedded part; 3, first supporting bracket; 31, first diagonal rod; 32, second diagonal rod; 33, third diagonal rod; 34, fourth diagonal rod; 35, first vertical rod; 36, first crossbar; 37, second crossbar; 4, second supporting bracket; 5, middle bracket; 51, third crossbar; 52, fourth crossbar; 53, second vertical rod; 54, third vertical rod; 55, fourth vertical rod; 56, fifth vertical rod; 57, fifth diagonal rod; 58, sixth diagonal rod; 6, first stable bracket Fixed bracket; 61, second stable bracket; 62, third stable bracket; 63, first distribution beam; 64, second distribution beam; 65, Bailey beam; 66, wooden square; 67, bottom formwork; 68, guardrail; 7, temporary cross brace; 71, embedded bracket; 72, supporting steel pipe; 721, middle steel pipe; 7211, reinforcement ring; 7212, triangular rib; 722, reinforcement steel pipe; 723, reinforcement vertical side; 724, reinforcement horizontal side; 725, triangular reinforcement plate; 73, reinforcement rack; 731, reinforcement cross bar; 732, first reinforcement diagonal bar; 733, second reinforcement diagonal bar; 74, reinforcement bar; 75, inclined reinforcement bar. DETAILED DESCRIPTION

[0035] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the 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 cannot be understood as a limitation on the present invention. In addition, 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, unless otherwise specified, "multiple" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The invention discloses a segmented hoisting construction method for a cast-in-place bracket of a main tower cross beam.

[0038] Reference Figures 1 to 5 , a main tower beam cast-in-place bracket segmented hoisting construction method, comprising the following steps: S1, construct two vertical bottom sections 1 of the main tower, and construct the lower cross beam 11 between the two vertical bottom sections 1; S2, constructing the vertical section 2 of the main tower by climbing formwork, and constructing a temporary horizontal brace 7 between two vertical sections 2 after each climbing formwork construction; S3. During the construction of the vertical section 2, embedded parts are arranged on the side walls of the two vertical sections 2; S4, hoisting the first supporting bracket 3 and the second supporting bracket respectively, and connecting them to the embedded parts on the two vertical sections 2 respectively; S5, hoisting the intermediate bracket 5, so that the intermediate bracket 5 is located between the first supporting bracket 3 and the second supporting bracket 4, and the intermediate bracket 5 is connected to the first supporting bracket 3 and the second supporting bracket 4; S6, hoist the first stable bracket 6 and the second stable bracket 61, so that the first stable bracket 6 is connected to the first supporting bracket 3, and the second stable bracket 61 is connected to the second supporting bracket 4, hoist the third stable bracket 62, and connect the third stable bracket 62 to the first stable bracket 6 and the second stable bracket 61, and at the same time connect the third stable bracket 62 to the first supporting bracket 3, the second supporting bracket 4, and the intermediate bracket 5; S7, installing the distribution beam, Bailey beam 65, wooden square 66 and bottom mold 67 on the first stable support 6 and the second stable support 61, then installing the side mold on the bottom mold 67, and casting the upper cross beam 12 through the bottom mold 67 and the side mold.

[0039] Specifically, the embedded parts include a first embedded part 21, a second embedded part 22 and a third embedded part 23. The first embedded part 21 is installed on both vertical sections 2. The first embedded part 21 on one vertical section 2 is fixedly connected to the first stable bracket 6, and the first embedded part 21 on the other vertical section 2 is fixedly connected to the second stable bracket 61. The third stable bracket 62 is fixedly connected between the first stable bracket 6 and the second stable bracket 61, and is flush with the first stable bracket 6 and the second stable bracket 61. The first embedded part 21, the second embedded part 22 and the third embedded part 23 can all adopt brackets.

[0040] The first supporting bracket 3 includes a first oblique rod 31, a second oblique rod 32, a third oblique rod 33, a fourth oblique rod 34, a first vertical rod 35, a first cross rod 36 and a second cross rod 37; one end of the first oblique rod 31 is hinged to the second embedded part 22, and the other end is hinged to the first stable bracket 6; one end of the second oblique rod 32 is hinged to the third embedded part 23, and the other end is hinged to the third stable bracket 62. One end of the third oblique rod 33, the fourth oblique rod 34, the first cross rod 36, the second cross rod 37 and the first vertical rod 35 is hinged to the first oblique rod 31, and the other end is hinged to the second oblique rod 32.

[0041] Among them, the first vertical rod 35, the first cross rod 36 and the second diagonal rod 32 form a triangle, the first cross rod 36, the third diagonal rod 33 and the first diagonal rod 31 form a triangle, the third diagonal rod 33, the second diagonal rod 32 and the second cross rod 37 form a triangle, and the second cross rod 37, the fourth diagonal rod 34 and the first diagonal rod 31 form a triangle to ensure the overall stability of the first supporting bracket 3.

[0042] In addition, the structure of the second support bracket 4 is mirrored to the structure of the first support bracket 3 along the midpoint of the line connecting the two vertical sections 2. That is, the structure of the second support bracket 4 is the same as that of the first support bracket 3, but is symmetrically arranged.

[0043] More specifically, the intermediate bracket 5 includes a third crossbar 51, a fourth crossbar 52, a second vertical bar 53, a third vertical bar 54, a fourth vertical bar 55 and a fifth vertical bar 56. Both ends of the third crossbar 51 are connected to the two second crossbars 37, and both ends of the fourth crossbar 52 are connected to the two second oblique bars 32. One end of the second vertical bar 53 and the fifth vertical bar 56 are connected to the third crossbar 51, and the other end is connected to the fourth crossbar 52. One end of the third vertical bar 54 and the fourth vertical bar 55 are connected to the third stable bracket 62, and the other end is connected to the fourth crossbar 52.

[0044] The third cross bar 51 is fixedly connected to a fifth diagonal bar 57 and a sixth diagonal bar 58 . The fifth diagonal bar 57 and the second diagonal bar 32 are both connected to the third stabilizing bracket 62 .

[0045] It should be noted that the first supporting bracket 3, the second supporting bracket 4, the first stable bracket 6 and the second stable bracket 61 are connected to the embedded parts through the ear plate seats. During hoisting, the ear plate seats are first hinged with the first supporting bracket 3, the second supporting bracket 4, the first stable bracket 6 or the second stable bracket 61 through the pin shaft, and then the ear plate seats are welded to the embedded parts, which can reduce the number of procedures for high-altitude construction and reduce safety hazards.

[0046] When the first support bracket 3 is lifted by the tower crane hook to the vicinity of the embedded part, the first support bracket 3 is temporarily connected to the embedded part through the guide chain, and when the guide chain is stabilized, the tower crane is unhooked. The temporary connection is achieved through the guide chain, which facilitates the tower crane hook to lift other brackets and improves construction efficiency.

[0047] The distribution beam includes a first distribution beam 63 and a second distribution beam 64. The first distribution beam 63 is installed on the first stable bracket 6, the second stable bracket 61 and the third stable bracket 62. The Bailey beam 65 is installed on the first distribution beam 63. The second distribution beam 64 is installed on the Bailey beam 65. The wood 66 is installed on the second distribution beam 64. The bottom mold 67 is installed on the wood 66. At the same time, a guardrail 68 is arranged around the bottom mold 67.

[0048] Reference Figures 6 to 10 The temporary cross brace 7 includes a pre-embedded bracket 71, and two pre-embedded brackets 71 are provided, which are respectively pre-embedded in the two vertical sections 2 of the main tower. Two support steel pipes 72 are welded between the two pre-embedded brackets 71, and the two support steel pipes 72 are located between the two vertical sections 2 of the main tower. Each support steel pipe 72 is also connected to a reinforced bent frame 73, and a plurality of reinforcement rods 74 are connected between the two support steel pipes 72. By combining the reinforcement bent frame 73, the reinforcement rod 74 and the support steel pipe 72, the overall strength of the cross brace is improved, and the cost and construction difficulty are greatly reduced under the premise of ensuring safety and reliability.

[0049] Specifically, the supporting steel pipe 72 includes a middle steel pipe 721 and two reinforcing steel pipes 722. The two reinforcing steel pipes 722 are respectively sleeved on both ends of the middle steel pipe 721. The reinforcing steel pipes 722 are fixedly connected to the middle steel pipe 721. The opposite ends of the two reinforcing steel pipes 722 are respectively welded to the two embedded brackets 71. A reinforcing ring 7211 is welded to the middle steel pipe 721, and a triangular rib 7212 is welded between the reinforcing ring 7211 and the middle steel pipe 721.

[0050] More specifically, the side walls of the middle steel tube 721 and the one reinforcing steel tube 722 are fixedly connected with a same reinforcing vertical edge 723 .

[0051] A reinforcing horizontal side 724 is fixedly connected to the reinforcing vertical side 723. A triangular reinforcing plate 725 is welded to the side wall of the reinforcing vertical side 723. A plurality of triangular reinforcing plates 725 are provided, some of which are welded to the middle steel pipe 721, and some of which are welded to the reinforcing steel pipe 722. An inclined reinforcing rod 75 is connected to the reinforcing steel pipe 722, and the other end of the inclined reinforcing rod 75 is connected to the middle steel pipe 721 of another supporting steel pipe 72, so as to increase the reliability of the connection between the middle steel pipe 721 and the reinforcing steel pipe 722.

[0052] The reinforcement rack 73 is fixedly connected to the middle steel pipe 721 and the reinforcement steel pipe 722. The reinforcement rack 73 includes a reinforcement cross bar 731, a first reinforcement diagonal bar 732 and a second reinforcement diagonal bar 733. The reinforcement cross bar 731 is arranged parallel to the support steel pipe 72. One end of the first reinforcement diagonal bar 732 is connected to the support steel pipe 72, and the other end is connected to the reinforcement cross bar 731. One end of the second reinforcement diagonal bar 733 is connected to the support steel pipe 72, and the other end is connected to the reinforcement cross bar 731. The first reinforcement diagonal bar 732, the second reinforcement diagonal bar 733 and the support steel pipe 72 support to form a triangle.

[0053] It should be noted that there are multiple first reinforcing diagonal rods 732 and second reinforcing diagonal rods 733 arrayed along the length direction of the reinforcing cross bar 731, so that a triangle is formed between each group of first reinforcing diagonal rods 732 and second reinforcing diagonal rods 733, that is, a triangle is also formed between the second reinforcing diagonal rods 733, the reinforcing cross bar 731 and the adjacent group of first reinforcing diagonal rods 732.

[0054] Working principle: The first supporting bracket 3, the second supporting bracket 4, the intermediate bracket 5, the first stable bracket 6, the second stable bracket 61 and the third stable bracket 62 are interconnected to form a whole to better bear the force. At the same time, there are many hinges inside the first supporting bracket 3 and the second supporting bracket 4, which can better release the bending moment to improve the carrying capacity.

[0055] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A method for the segmented hoisting construction of a cast-in-place support for a main tower beam, characterized in that: The steps include: S1, constructing two vertical bottom sections (1) of the main tower, and constructing a lower cross beam (11) between the two vertical bottom sections (1); S2, constructing the vertical section (2) of the main tower by means of climbing formwork, and constructing a temporary horizontal brace (7) between two vertical sections (2) after each climbing formwork construction; S3. During the construction of the vertical section (2), embedded parts are arranged on the side walls of the two vertical sections (2); S4, hoisting the first supporting bracket (3) and the second supporting bracket respectively, and connecting them to the embedded parts on the two vertical sections (2) respectively; S5, hoisting the intermediate bracket (5) so that the intermediate bracket (5) is located between the first supporting bracket (3) and the second supporting bracket (4), and the intermediate bracket (5) is connected to the first supporting bracket (3) and the second supporting bracket (4); S6, hoisting the first stable bracket (6) and the second stable bracket (61), so that the first stable bracket (6) is connected to the first supporting bracket (3), so that the second stable bracket (61) is connected to the second supporting bracket (4), hoisting the third stable bracket (62), and so that the third stable bracket (62) is connected to the first stable bracket (6) and the second stable bracket (61), and at the same time, the third stable bracket (62) is connected to the first supporting bracket (3), the second supporting bracket (4), and the intermediate bracket (5); S7, installing the distribution beam, Bailey beam (65), wooden beam (66) and bottom mold (67) on the first stable support (6) and the second stable support (61), then installing the side mold on the bottom mold (67), and casting the upper cross beam (12) through the bottom mold (67) and the side mold.

2. The method for segmented hoisting construction of a cast-in-place support for a main tower cross beam according to claim 1 is characterized in that: The embedded parts include a first embedded part (21), and the first embedded part (21) is connected to a first stabilizing bracket (6).

3. The method for segmented hoisting construction of a cast-in-place support for a main tower cross beam according to claim 1 is characterized in that: The embedded parts further include a second embedded part (22) and a third embedded part (23); the first supporting bracket (3) includes a first oblique rod (31), a second oblique rod (32), a third oblique rod (33), a fourth oblique rod (34), a first vertical rod (35), a first cross rod (36) and a second cross rod (37); One end of the first oblique rod (31) is hinged to the second embedded part (22), and the other end is hinged to the first stable bracket (6); One end of the second oblique rod (32) is hinged to the third embedded part (23), and the other end is hinged to the third stable bracket (62).

4. The method for segmented hoisting construction of cast-in-place brackets for main tower cross beams according to claim 3 is characterized in that: One end of the third diagonal rod (33), the fourth diagonal rod (34), the first cross rod (36), the second cross rod (37) and the first vertical rod (35) is hinged to the first diagonal rod (31), and the other end is hinged to the second diagonal rod (32).

5. A method for sectional hoisting construction of cast-in-place brackets for main tower cross beams as claimed in claim 4, characterized in that: The structure of the second supporting bracket (4) and the structure of the first supporting bracket (3) are arranged in a mirror image along the midpoint of the line connecting the two vertical sections (2).

6. A method for segmented hoisting construction of cast-in-place brackets for main tower cross beams as claimed in claim 5, characterized in that: The intermediate bracket (5) comprises a third cross bar (51), a fourth cross bar (52), a second vertical bar (53), a third vertical bar (54), a fourth vertical bar (55) and a fifth vertical bar (56); two ends of the third cross bar (51) are connected to two second cross bars (37); and two ends of the fourth cross bar (52) are connected to two second oblique bars (32).

7. A method for sectional hoisting construction of cast-in-place brackets for main tower cross beams as claimed in claim 6, characterized in that: One end of the second vertical rod (53) and the fifth vertical rod (56) is connected to the third cross rod (51), and the other end is connected to the fourth cross rod (52).

8. A method for segmented hoisting construction of cast-in-place brackets for main tower cross beams as claimed in claim 7, characterized in that: One end of the third vertical rod (54) and the fourth vertical rod (55) is connected to the third stable bracket (62), and the other end is connected to the fourth cross rod (52).

9. A method for segmented hoisting construction of cast-in-place brackets for main tower cross beams as claimed in claim 1, characterized in that: The first supporting bracket (3), the second supporting bracket (4), the first stabilizing bracket (6) and the second stabilizing bracket (61) are respectively connected to the embedded parts via ear plate seats. During hoisting, the ear plate seats are first connected to the first supporting bracket (3), the second supporting bracket (4), the first stabilizing bracket (6) or the second stabilizing bracket (61), and then the ear plate seats are welded to the embedded parts.

10. A method for segmented hoisting construction of cast-in-place brackets for main tower cross beams as claimed in claim 1, characterized in that: When the first supporting bracket (3) is lifted by the tower crane hook to the vicinity of the embedded part, the first supporting bracket (3) is temporarily connected to the embedded part through the guide chain, and when the guide chain is subjected to a stable force, the tower crane is unhooked.

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