Control tower top, construction system and construction method of suspended steel truss structure

Abstract

The application discloses a control tower top structure of a suspended steel truss, a construction system and a construction method, adopts a fabricated top frame structure composed of a center cylinder and a purlin truss, guarantees the reliable stability of the overall structure, is easier to control the butt joint precision of the structure when high-altitude assembling, reduces the construction difficulty, and effectively guarantees the construction efficiency and the construction quality; in the construction process, the construction system is used to ensure the levelness of the center cylinder and limit the axial position of the center cylinder, so that the center cylinder is always at the center, and the purlin truss can be accurately butted with the center cylinder, the construction difficulty is effectively reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of control tower construction technology, specifically to a control tower top with a suspended steel truss structure, a construction system, and a construction method. Background Technology

[0002] The control tower's steel structure is installed at the top of a control tower approximately 50 meters high. The conventional construction method involves constructing the steel structure walls at the top of the tower, assembling the steel roof structure on the ground, and then using large hoisting equipment to lift the entire roof structure to the top of the tower for final assembly. However, in some areas, large hoisting equipment is unavailable or cannot be deployed, necessitating a high-altitude assembly method. Because the steel roof structure typically uses a symmetrical layout, strict assembly precision is required. However, the limited construction space at the top of the control tower makes controlling this precision difficult. Therefore, conventional high-altitude assembly methods cannot meet the construction requirements and carry significant risks. Thus, a different construction method is needed to ensure both construction quality and efficiency. Summary of the Invention

[0003] This invention provides a control tower top with a suspended steel truss structure, a construction system, and a construction method, enabling high-precision construction of the control tower top and ensuring construction quality and efficiency.

[0004] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: A control tower top with a suspended steel truss structure is located at the top of the control tower, including a main structure, a wall frame structure, a middle frame structure and a top frame structure. The wall frame structure is located on the main structure, the middle frame structure is horizontally located in the middle of the wall frame structure, and the top frame structure is horizontally located at the top of the wall frame structure. The top frame structure includes a central tube and purlin trusses. The central tube is coaxial with the wall frame structure and is connected to the wall frame structure through the purlin trusses. The purlin trusses are centrally symmetrically arranged between the central tube and the wall frame structure, and a first connecting rod is provided between adjacent purlin trusses.

[0005] Furthermore, the purlin truss is arranged vertically, with its inner end connected to the central tube and its outer end connected to the support column; The purlin truss includes an upper chord, a lower chord, and web members, with the web members positioned between the parallel upper and lower chords.

[0006] Furthermore, the central tube is a circular tube, and the upper chord and lower chord are respectively connected to the top and bottom of the central tube.

[0007] Furthermore, the central frame structure includes a central column, purlins, and a second connecting rod. The central column is vertically arranged on the main structure, and the purlins are arranged symmetrically at the center. The inner end of the purlin is connected to the central column, and the outer end is connected to the wall frame structure. The second connecting rod is arranged between adjacent purlins.

[0008] Furthermore, the wall frame structure includes support columns and connecting beams, with the support columns spaced apart on the main structure and the connecting beams positioned between adjacent support columns.

[0009] A construction system for the top of a control tower with a suspended steel truss structure includes a support frame, an adjustment device, a tensioning device, and a positioning device. The support frame is mounted on the main structure to support the central cylinder; The adjustment device is mounted on the support frame and is used to place the center cylinder; The tensioning device is installed between the wall frame structure and the central tube to limit the position of the central tube; The positioning device is installed on the central cylinder and is used to determine the position of the central cylinder.

[0010] Furthermore, the adjusting device includes a fixed plate and a movable plate. The fixed plate is fixedly mounted on the support frame, and the movable plate is movably mounted in the fixed plate and moves horizontally within the fixed plate. The central cylinder is fixedly mounted on the movable plate.

[0011] Furthermore, the tensioning devices are arranged in pairs, with the two tensioning devices symmetrically connected to the central cylinder.

[0012] A construction method for a control tower top construction system with a suspended steel truss structure includes the following steps: S1, Precast Components: Precast wall frame structures, intermediate frame structures, and top frame structures, and transfer them to the construction site; S2, Construction of wall frame structure: Construction of wall frame structure on the main structure; S3, Construction of intermediate frame structure: Construction of the intermediate frame structure is carried out on the completed wall frame structure; S4, Erecting the construction system: Erecting the construction system on the main structure; First, the support frame is erected, and then the adjustment device is fixedly installed on the support frame. The height and level of the adjustment device are adjusted to meet the design requirements. S5, Construction of the roof frame structure: Construction of the roof frame structure on the construction system; S51, Place the center cylinder on the adjusting device and fix it to the adjusting device; S52, connect the tensioning device to the central tube so that the tensioning device remains in an untensioned state; S53, first install the first set of purlins and trusses, then tension the tensioning device and adjust the axis of the central tube so that its axis is collinear with the axis of the wall frame structure. Then install the purlins and trusses symmetrically. During the installation process, adjust the tensioning device in real time to ensure that the axis of the central tube is always collinear with the axis of the wall frame structure until all the purlins and trusses are installed. S6, Construction wall frame structure: Concrete is poured on top of the top frame structure. After the concrete has solidified, the construction system is dismantled.

[0013] Furthermore, in step S53, the first set of purlins is located on the extension line of the angle bisector of the two tensioning devices, and then the purlins are installed symmetrically on both sides of the angle bisector.

[0014] The beneficial effects of this invention are as follows: The use of a prefabricated top frame structure composed of a central tube and purlin trusses not only ensures the reliability and stability of the overall structure, but also makes it easier to control the docking accuracy of the structure during high-altitude assembly, and reduces the difficulty of construction, effectively ensuring construction efficiency and quality. The construction system ensures the levelness of the central tube and restricts its axial position, keeping the central tube centered and allowing the purlin trusses to be precisely aligned with it. This effectively reduces construction difficulty and improves construction efficiency. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the overall structure of the present invention; Figure 3 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 4 This is a top view of the overall structure of the present invention; Figure 5 This is a three-dimensional schematic diagram of the top frame structure of the present invention; Figure 6 This is a schematic diagram of the construction status of the top frame structure of the present invention; Figure 7 This is a top view of the construction system of the present invention; Figure 8 This is a schematic diagram showing the central tube configuration of the present invention; Figure 9 This is a cross-sectional schematic diagram of the adjustment device of the present invention.

[0016] Reference numerals in the attached drawings: 1. Wall frame structure; 11. Support column; 12. Connecting beam; 2. Middle frame structure; 21. Central column; 22. Purlin; 3. Top frame structure; 31. Central tube; 32. Purlin truss; 33. First connecting rod; 4. Support frame; 5. Adjustment device; 51. Fixed plate; 52. Movable plate; 6. Tensioning device. Detailed Implementation

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] In the description of this invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0019] like Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, a control tower top with a suspended steel truss structure is located at the top of the control tower. It includes a main structure, a wall frame structure 1, a middle frame structure 2, and a top frame structure 3. The wall frame structure 1 is located on the main structure, the middle frame structure 2 is horizontally located in the middle of the wall frame structure 1, and the top frame structure 3 is horizontally located at the top of the wall frame structure 1. The top frame structure 3 includes a central tube 31 and purlin trusses 32. The wall frame structure 1 is cylindrical, with a frustum-shaped lower part and a frustum-shaped upper part. The central tube 31 is a circular tube and is coaxial with the wall frame structure 1. It is connected to the wall frame structure 1 through the purlin trusses 32. The purlin trusses 32 are centrally symmetrically arranged between the central tube 31 and the wall frame structure 1. The purlin trusses 32 are arranged vertically. The inner end of the purlin trusses 32 is connected to the central tube 31, and the outer end is connected to the support column 11. A first connecting rod 33 is arranged between adjacent purlin trusses 32. The central tube 31, purlin trusses 32 and the first connecting rod 33 form a circular top frame structure 3.

[0020] Furthermore, the purlin truss 32 includes an upper chord, a lower chord, and web members, with the web members positioned between the parallel upper and lower chords. The inner ends of the upper and lower chords are connected to the top and bottom of the central tube 31, respectively, while the outer ends of the upper and lower chords are connected to the support column 11.

[0021] like Figure 2 , 3 As shown, the central frame structure 2 further includes a central column 21, purlins 22, and a second connecting rod. The central column 21 is vertically arranged on the main structure, and the purlins 22 are arranged symmetrically at the center. The inner end of the purlin 22 is connected to the central column 21, and the outer end is connected to the wall frame structure 1. The second connecting rod is arranged between adjacent purlins 22.

[0022] like Figure 6 As shown, the wall frame structure 1 further includes support columns 11 and connecting beams 12. The support columns 11 are spaced apart on the main structure, and the connecting beams 12 are arranged between adjacent support columns 11.

[0023] In an embodiment of the present invention, 15 sets of purlin trusses 32 are arranged symmetrically between the central tube 31 and the wall frame structure 1. Since the two purlin trusses 32 arranged opposite each other are not on the same diameter, the installation of the purlin trusses 32 will cause the central tube 31 to deviate from the center, which will make it difficult to connect and install the purlin trusses 32 in subsequent steps. Moreover, as the purlin trusses 32 are installed, multiple sets of purlin trusses 32 exert force on the central tube 31 at the same time, making the centering operation of the central tube 31 more difficult, and causing the horizontality of the central tube 31 to deviate, which will make it impossible to accurately connect the purlin trusses 32 in subsequent steps. By setting up a construction system to limit the horizontality of the central tube 31 and adjust the position of the central tube 31 in real time to make it coaxial with the wall frame structure 1, the purlin trusses 32 can be successfully connected to the central tube 31 and the accurate installation can be achieved.

[0024] like Figure 7 , 8 As shown in Figures 9 and 1, a construction system for the top of a control tower with a suspended steel truss structure includes a support frame 4, an adjustment device 5, a tensioning device 6, and a positioning device. The support frame 4 is installed on the main structure and located inside the wall frame structure 1, and is used to support the central cylinder 31; The adjustment device 5 is installed on the support frame 4 and is used to place the center cylinder 31 and limit the horizontality of the center cylinder 31. The tensioning device 6 is disposed between the wall frame structure 1 and the central tube 31 to limit the position of the central tube 31; The positioning device is installed on the central cylinder 31 and is used to determine the position of the central cylinder 31.

[0025] The specific working principle of the construction system is to limit the horizontality of the central cylinder 31 by adjusting the device 5 fixed on the support frame 4, so that it can only move horizontally at the designed height, avoiding the phenomenon of the central cylinder 31 tilting, and thus avoiding the phenomenon of the purlin truss 32 and the central cylinder 31 failing to connect. Then, the central cylinder 31 is tied by the paired tensioning devices 6. By adjusting the tensioning length of the two tensioning devices 6, the position of the central cylinder 31 is adjusted. The horizontality of the central cylinder 31 is limited by the adjusting device 5, and the horizontal position of the central cylinder 31 is limited by the tensioning devices 6, so that it can be smoothly connected with the purlin truss 32.

[0026] like Figure 9 As shown, the adjusting device 5 further includes a fixed disk 51 and a movable disk 52. The fixed disk 51 is fixedly mounted on the support frame 4, and the movable disk 52 is movably mounted in the fixed disk 51 and moves horizontally within the fixed disk 51. The central cylinder 31 is fixedly mounted on the movable disk 52.

[0027] like Figure 9 As shown, preferably, the fixed disk 51 has a circular groove at its center, and the movable disk 52 is located in the circular groove. The surface of the movable disk 52 is flush with the surface of the fixed disk 51. A limiting ring is provided on the fixed disk 51, and the limiting ring is horizontally disposed on the inner wall of the circular groove. An annular limiting groove is provided on the outer wall of the movable disk 52, and the limiting ring is located in the limiting groove. The bottom surfaces of the upper and lower surfaces of the limiting ring are in contact with the upper and lower surfaces of the limiting groove and can only move horizontally relative to each other, thus allowing the movable disk 52 to move horizontally only within the fixed disk 51. Through the cooperation of the limiting ring and the limiting groove, the movement trajectory of the movable disk 52 is restricted, allowing it to move horizontally only within the circular groove. When the central cylinder 31 is fixed on the movable disk 52, the horizontality of the central cylinder 31 is thus restricted.

[0028] like Figure 7 As shown, the tensioning devices 6 are arranged in pairs, with the two tensioning devices 6 symmetrically connected to the central cylinder 31. By adjusting the tensioning length of the two tensioning devices 6, the horizontal position of the central cylinder 31 can be adjusted.

[0029] Furthermore, the support frame 4 is a scaffold, erected from the top of the main structure, passing through the middle frame structure 2, with its top located below the top frame structure 3. When the fixing plate 51 is fixed on the support frame 4, its height is at the designed height and it is in a horizontal state.

[0030] Furthermore, the tensioning device 6 includes a cable and a tensioning jack. One end of the cable is connected to the central cylinder 31, and the other end is connected to the tensioning jack, which is connected to the wall frame structure 1. When the tensioning device 6 is installed, it is positioned at the installation location of the purlin truss 32. The purlin truss 32 occupied by the two tensioning devices 6 is installed after the tensioning devices 6 are removed.

[0031] A construction method for a construction system for a control tower top with a suspended steel truss structure includes the following steps.

[0032] S1, Precast components: Precast wall frame structure 1, intermediate frame structure 2 and top frame structure 3, and transfer them to the construction site; When the wall frame structure 1 is prefabricated, the prefabricated components are support columns 11 and connecting beams 12. When the middle frame structure 2 is prefabricated, the prefabricated components are central column 21, purlin 22 and second connecting rod. When the top frame structure 3 is prefabricated, the prefabricated components are central tube 31, purlin truss 32 and first connecting rod 33.

[0033] S2, Construction of wall frame structure: Construction of wall frame structure 1 on the main structure; First, install the support columns 11 one by one, and then install the connecting beams 12 between adjacent support columns 11 to complete the installation of the wall frame structure 1.

[0034] S3, intermediate frame structure: the intermediate frame structure 2 is constructed on the completed wall frame structure 1; First, install the central column 21, then install the purlins 22 one by one, and finally install the second connecting rod between the purlins 22 to complete the installation of the central frame structure 2.

[0035] S4, Erecting the construction system: Erecting the construction system on the main structure; First, the support frame 4 is erected, and then the adjustment device 5 is fixedly installed on the support frame 4. The height and level of the adjustment device 5 are adjusted to meet the design requirements.

[0036] S5, Construction of the top frame structure: Construction of the top frame structure 3 is carried out on the construction system; S51, place the center cylinder 31 on the movable plate 52 of the adjusting device 5, and fix it to the movable plate 52; S52, connect the two tensioning devices 6 to the central cylinder 31, and keep the tensioning devices 6 in an untensioned state; Two tensioning devices 6 are respectively installed at the purlin truss positions 32, numbered 7 and 10; S53, first install the first set of purlin trusses 32 (numbered 1). The tensioning devices 6 at positions 7 and 10 cooperate with the purlin truss 32 at position 1 to form a three-point tie structure. Adjust the tensioning lengths of the two tensioning devices 6 to adjust the horizontal position of the central cylinder 31. Then, based on the horizontal position of the central cylinder 31, tension the two tensioning devices 6 to adjust the axis of the central cylinder 31, making its axis collinear with the axis of the wall frame structure 1. Then, install the purlins symmetrically from both sides. During the installation of truss 32, the tensioning length of tensioning device 6 is adjusted in real time to control the central tube 31 so that its axis is always collinear with the axis of wall frame structure 1 until all purlin trusses 32 except for positions numbered 7 and 10 are installed. Then tensioning device 6 is removed. At this time, the combined effect of the installed purlin trusses 32 enables the central tube 31 to maintain accurate and stable position. Therefore, the installation of the last two sets of purlin trusses 32 can be carried out directly. Then the installation of the first connecting rod 33 is carried out between the purlin trusses 32. When the purlin truss 32 is connected to the central tube 31, it is mated through ear plates and then locked with bolts. After all the purlin trusses 32 are installed, the connection positions are welded to enhance the connection strength and stability.

[0037] S6, Construction of the wall frame structure: Concrete is poured on the top of the top frame structure 3. After the concrete is poured, the load on the top frame structure 3 increases and deflection will occur. The construction system is used to support the top frame structure 3. After the concrete solidifies, the support frame 4 and adjustment device 5 of the construction system are removed.

[0038] Furthermore, in step S53, the first set of purlin trusses 32 is located on the extension line of the angle bisector of the two tensioning devices 6, and then the purlin trusses 32 are installed symmetrically on both sides of the angle bisector.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A construction system for a control tower top with a suspended steel truss structure, wherein the control tower top is located at the top of the control tower, characterized in that: The control tower top includes a main structure, a wall frame structure (1), a middle frame structure (2) and a top frame structure (3). The wall frame structure (1) is installed on the main structure, the middle frame structure (2) is horizontally installed in the middle of the wall frame structure (1), and the top frame structure (3) is horizontally installed on the top of the wall frame structure (1). The top frame structure (3) includes a central tube (31) and purlin trusses (32). The central tube (31) is coaxial with the wall frame structure (1) and is connected to the wall frame structure (1) through the purlin trusses (32). The purlin trusses (32) are centrally symmetrically arranged between the central tube (31) and the wall frame structure (1). A first connecting rod (33) is provided between adjacent purlin trusses (32). The construction system for controlling the top of the tower includes a support frame (4), an adjustment device (5), a tensioning device (6), and a positioning device; The support frame (4) is installed on the main structure and is used to support the central cylinder (31). The adjustment device (5) is installed on the support frame (4) and is used to place the center cylinder (31). The tensioning device (6) is disposed between the wall frame structure (1) and the central tube (31) to limit the position of the central tube (31); The positioning device is installed on the central cylinder (31) and is used to determine the position of the central cylinder (31); The central frame structure (2) includes a central column (21), purlins (22) and a second connecting rod. The central column (21) is vertically arranged on the main structure. The purlins (22) are arranged symmetrically in the center. The inner end of the purlin (22) is connected to the central column (21) and the outer end is connected to the wall frame structure (1). The second connecting rod is arranged between adjacent purlins (22). The adjustment device (5) includes a fixed plate (51) and a movable plate (52). The fixed plate (51) is fixedly mounted on the support frame (4). The movable plate (52) is movably mounted in the fixed plate (51) and moves horizontally in the fixed plate (51). The central cylinder (31) is fixedly mounted on the movable plate (52).

2. The construction system for the control tower top of the suspended steel truss structure according to claim 1, characterized in that: The purlin truss (32) is arranged vertically, with its inner end connected to the central tube (31) and its outer end connected to the support column (11). The purlin truss (32) includes an upper chord, a lower chord, and web members, with the web members arranged between the mutually parallel upper and lower chords.

3. The construction system for the control tower top of the suspended steel truss structure according to claim 2, characterized in that: The central cylinder (31) is a circular cylinder, and the upper chord and lower chord are respectively connected to the top and bottom of the central cylinder (31).

4. The construction system for the control tower top of the suspended steel truss structure according to claim 1, characterized in that: The wall frame structure (1) includes support columns (11) and connecting beams (12). The support columns (11) are spaced apart on the main structure, and the connecting beams (12) are arranged between adjacent support columns (11).

5. The construction system for the control tower top of the suspended steel truss structure according to claim 1, characterized in that: The tensioning devices (6) are arranged in pairs, and the two tensioning devices (6) are symmetrically connected to the central cylinder (31).

6. A construction method for a control tower top construction system using the suspended steel truss structure as described in claim 1, characterized in that, Includes the following steps, S1, Precast components: Precast the wall frame structure (1), the middle frame structure (2) and the top frame structure (3) and transfer them to the construction site; S2, Construction of wall frame structure: Construction of wall frame structure (1) on the main structure; S3, Construction of intermediate frame structure: Construction of intermediate frame structure (2) is carried out in the completed wall frame structure (1); S4, Erecting the construction system: Erecting the construction system on the main structure; First, the support frame (4) is erected, and then the adjustment device (5) is fixedly installed on the support frame (4). The height and level of the adjustment device (5) are adjusted to meet the design requirements. S5, Construction of the top frame structure: Construction of the top frame structure (3) on the construction system; S51, place the center cylinder (31) on the adjusting device (5) and fix it to the adjusting device (5); S52, connect the tensioning device (6) to the central cylinder (31) so that the tensioning device (6) remains untensioned; S53, first install the first set of purlin trusses (32), then tension the tensioning device (6) and adjust the axis of the central tube (31) so that its axis is collinear with the axis of the wall frame structure (1), then install the purlin trusses (32) symmetrically. During the installation process, adjust the tensioning device (6) in real time to ensure that the axis of the central tube (31) is always collinear with the axis of the wall frame structure (1) until all the purlin trusses (32) are installed. S6, Construction wall frame structure: Concrete is poured on the top of the top frame structure (3). After the concrete solidifies, the construction system is removed.

7. The construction method of the construction system for the top of a control tower with a suspended steel truss structure according to claim 6, characterized in that: In step S53, the first set of purlin trusses (32) is located on the extension line of the angle bisector of the two tensioning devices (6), and then the purlin trusses (32) are installed symmetrically on both sides of the angle bisector.

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