Construction structure for special-shaped landscape steel arch main tower of cable-stayed bridge

Abstract

The utility model relates to a special-shaped landscape steel arch main tower construction structure of a cable-stayed bridge. According to the scheme, the special-shaped landscape steel arch main tower construction structure comprises a steel arch on-site horizontal splicing jig frame, a steel arch installation guiding temporary fixing device, a jacking type construction platform device in a main tower, a lifting operation platform temporary fixing structure and a construction support stable wind-resistant structure. The construction efficiency of the landscape steel member is improved, the precision and stability of the steel arch in the operation process are improved, and the efficiency and safety of construction in the concrete main tower are improved.

Description

Technical Field

[0001] The present application relates to the technical field of cable-stayed bridge construction, and in particular to the construction structure of a special-shaped landscape steel arch main tower of a cable-stayed bridge. Background Art

[0002] During the construction of cable-stayed bridges, the use of landscape steel arch towers is becoming increasingly widespread. The pre-assembly and linear calibration of steel arch components before construction plays a crucial role in construction quality. Traditional cradles suffer from inconvenient adjustment, high material loss, and low construction efficiency. During the construction of steel arch components, it is difficult to ensure accuracy, component stability, and construction quality. During the construction of traditional main tower cavities, the narrow space and high tower height lead to low construction efficiency, high construction costs, and certain construction difficulties. Therefore, it is of great significance to study the special-shaped landscape steel arch main towers and construction methods of cable-stayed bridges.

[0003] Aiming at the above problems existing in the construction, the utility model proposes a corresponding special-shaped landscape steel arch main tower of a cable-stayed bridge and a construction method to solve the relevant technical difficulties. Utility Model Content

[0004] The purpose of this application is to address the above-mentioned problems existing in the prior art and to provide a construction structure for a special-shaped landscape steel arch main tower of a cable-stayed bridge.

[0005] In order to achieve the above application purpose, this application adopts the following technical solutions: The construction structure of the special-shaped landscape steel arch main tower of the cable-stayed bridge includes:

[0006] The on-site horizontal assembly frame of the steel arch includes an upper support, an oblique support, a lower support and an adjustable bottom support; the upper support is provided with a steel support beam, a sliding block and a fixedly connected block slide are provided on the top of the steel support beam, a limit steel plate and a firmly connected angle brace steel plate are provided at the end of the steel support beam, and a hydraulic jack is fixedly installed between the sliding block and the limit steel plate; the oblique support is welded with a steel pad at the top of the oblique support rod and is firmly connected to the lower support by tension bolts, the bottom of the oblique support rod is rotatably connected to the slider in the slide, the end of the slide is provided with a screw positioning steel block and an adjustable screw, the bottom surface of the slide is fixedly connected to the oblique support bottom plate, and the oblique support bottom plate and the site are firmly connected by high-strength chemical bolts;

[0007] The temporary fixing device for the steel arch installation guide includes a limit support, a fixed connecting rib plate, and high-strength tension bolts connecting the limit support. The limit supports are arranged in pairs on the lower installed and fixed steel arch segment and the upper steel arch segment being installed, with the weld between the upper and lower segments as the symmetry axis, and sufficient working space is reserved between the limit support arrangement position and the weld construction position.

[0008] The jacking-type construction platform device inside the main tower includes a fixed platform, a telescopic mobile platform, a hydraulic jacking device, a boom, and a hydraulic telescopic device. The top and middle fixed platforms in the jacking-type construction platform device are connected by a hydraulic jacking device, and the hydraulic jacking device is used to achieve the overall climbing of the construction platform device. The middle and bottom fixed platforms are fixedly connected by a boom. The telescopic mobile platform can be extended and retracted inside and outside the fixed platform by a hydraulic telescopic device arranged on the side. The contact area between the end of the telescopic mobile platform and the concrete tooth block is equipped with anti-slip teeth to enhance friction. The hydraulic telescopic device is firmly connected to the middle fixed block through the end fixed block.

[0009] Steel arch work platform, including bottom frame and work area.

[0010] Furthermore, it also includes a temporary fixed structure for the lifting work platform, which includes an inclined load wire rope, a conduit and a concrete tooth block, and is connected to the steel arch work platform and the main tower through the inclined load wire rope, and is connected to the main tower through the conduit and the concrete tooth block.

[0011] Furthermore, the bottom frame of the steel arch working platform is composed of the platform's longitudinal steel frame and the platform's transverse steel frame. The working area is paved with patterned steel plates and is equipped with enclosure components on the periphery. A safety enclosure structure is arranged around the inner steel arch mounting hole. The steel arch working platform uses a frame structure composed of oblique steel supports, transverse steel supports, and vertical steel supports to provide stable support to the outer wall of the main tower.

[0012] Furthermore, it also includes a construction support to stabilize the wind-resistant structure, and the construction support to stabilize the wind-resistant structure includes an I-beam and a steel support. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural diagram of the steel arch on-site horizontal assembly frame;

[0014] Figure 2 This is a schematic diagram of the main view of the upper support structure of the horizontal tire frame;

[0015] Figure 3 This is a schematic diagram of the arrangement structure of the sliding limit baffle and the slideway in the horizontal tire frame;

[0016] Figure 4 It is a schematic diagram of the arrangement structure of the oblique support and the bottom adjustable support;

[0017] Figure 5 Schematic diagram of the bottom adjustable support structure;

[0018] Figure 6 This is a schematic diagram of the installation guide temporary fixation technology for steel arch segments;

[0019] Figure 7 It is a schematic diagram of the structure of the guide temporary fixing device;

[0020] Figure 8 This is a schematic diagram of the structure of the jacking construction platform device;

[0021] Figure 9 This is a schematic diagram of the overhead structure of the personnel working area in the jacking construction platform device;

[0022] Figure 10 This is a flowchart of the climbing construction inside the main tower of the jacking construction platform device;

[0023] Figure 11 This is a schematic diagram of the temporary fixation technology for the lifting work platform;

[0024] Figure 12 This is a schematic diagram of the steel arch working platform from a bird's-eye view;

[0025] Figure 13 This is a schematic diagram of the technology for the buckle bracket to stabilize and resist wind;

[0026] Figure 14 It is a schematic diagram of the main tower reinforcement structure with steel support hoops.

[0027] Explanation of reference numerals: 1. Upper bracket; 11. Steel support beam; 12. Positioning steel plate; 13. Angle support steel plate; 14. Sliding block; 15. Block slide; 16. Hydraulic jack; 2. Diagonal support; 21. Diagonal support rod; 22. Slider; 23. Steel pad; 24. Tension bolt; 25. Slide; 26. Screw positioning steel block; 27. Adjustable screw; 28. Diagonal support base plate; 29. High-strength chemical bolt; 3. Lower support Support; 4. Adjustable bottom support; 41. Steel casing; 42. Screw nut; 43. Top plate; 44. Threaded screw; 45. High-strength threaded adjustment member; 46. Threaded screw support; 47. Support base plate; 5. Lower installed and fixed steel arch segment; 6. Upper steel arch segment being installed; 7. Cable hole; 8. Temporary guide fixture; 81. Limit support; 82. Rib plate; 83. High-strength tension bolts; 9. Upper and lower segments Intermediate welds; 10. Lifting construction platform device; 101. Fixed platform; 102. Telescopic mobile platform; 1021. Anti-slip teeth; 103. Hydraulic telescopic device; 104. End fixing block; 105. Intermediate fixing block; 106. Hydraulic jacking device; 1061. Outer casing; 1062. Inner jacking pipe; 107. Hanging rod; 108. Protective fence; 110. Concrete tooth block; 120. Cable hole on the main tower; 130. Main Tower outer wall; 140, guide tube; 150, inclined load wire rope; 160, platform longitudinal steel frame; 170, transverse steel support; 180, vertical steel support; 190, oblique steel support; 200, lifting lug; 210, enclosure component; 220, safety enclosure structure; 230, platform transverse steel frame; 240, buckle bracket; 250, I-beam; 260, steel support; 270, total station; 280, patterned steel plate. DETAILED DESCRIPTION

[0028] The following will be combined with the accompanying drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0029] Those skilled in the art should understand that, in the disclosure of this application, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting this application.

[0030] Example 1

[0031] The construction structure of the special-shaped landscape steel arch main tower of this cable-stayed bridge includes the on-site horizontal assembly frame of the steel arch, the temporary fixing device for the steel arch installation guide, the jacking-type construction platform device inside the main tower, the temporary fixing technology (structure) for the lifting work platform, and the stable and wind-resistant technology (structure) for the construction support.

[0032] Example 2

[0033] The construction method of the special-shaped landscape steel arch main tower of the cable-stayed bridge includes the following steps:

[0034] S1. Harden the ground within the construction range with concrete and divide the site into scales. Then, install the steel arch on-site horizontal cradle according to the designed position. Use high-strength chemical bolts 29 to fix the inclined support base plate 28 and the support base plate 47 at the bottom of the steel arch on-site horizontal cradle to the concrete hardened site. After the steel arch on-site horizontal cradle is installed, lift the landscape steel arch segment to the top of the steel support beam 11 for pre-assembly. Use the total station 270 to measure and calibrate the component coordinates during the construction process. Twist the high-strength threaded adjustment component 45 at the bottom adjustable support 4 to complete the height adjustment of the upper bracket 1. Use the hydraulic jack 16 to push and pull the sliding block 14 to adjust the upper bracket 1 in the horizontal position. When adjusting the height, the inclined support 2 controls the position of the slider 22 in the slide groove 25 by rotating the adjustable screw 27 to complete the height adjustment of the inclined support 2 structure.

[0035] S2. During the on-site installation of the landscape steel arch segment, high-strength tension bolts 83 are used to temporarily fix the limit supports 81 on the upper and lower segments, and then weld them together. The limit supports 81 are symmetrically arranged according to the weld 9 between the upper and lower segments and are provided with multiple ribs 82 for enhanced support. The temporary guiding and fixing device 8 is used to improve the efficiency of the steel arch segment assembly construction and effectively ensure the construction quality.

[0036] S3. Install the jacking construction platform device 10 in the main tower, and control the hydraulic telescopic device 103 on the platform to extend and move the telescopic movable platform 102 out of the fixed platform 101 and support it on the concrete tooth block 110 in the tower, thereby completing the support and fixation of the jacking construction platform device 10 in the tower. Before carrying out construction in the next area, first retract the telescopic movable platform 102 on the top floor into the fixed platform 101, then start the hydraulic jacking device 106 to let its outer sleeve 1061 and inner jacking pipe 1062 lift the platform on the top floor to the upper concrete tooth block 110 through relative movement and control the telescopic movable platform 102 on the top floor to support and fix it, then retract the telescopic movable platforms 102 on the middle and bottom floors into the fixed platform 101 and use the outer sleeve 1061 and inner jacking pipe 1062 to relative shrink to complete the lifting of the middle and bottom platforms, finally control the middle and bottom telescopic movable platforms 102 to support and fix them when the middle and bottom platforms are lifted to the predetermined positions, and then continue to work in the tower.

[0037] S4. After the current landscape steel arch segment is installed, the temporary fixing technology of the lifting work platform is used to first lift the work platform upward and temporarily fix it. Then, after the lower buckle bracket 240 is erected in place, the temporary fixing connection of the steel arch work platform is released, and the work platform is fixed to the lower buckle bracket 240. After the steel arch work platform is lifted to the designated position, the inclined load steel wire rope 150 is used to temporarily fix the platform to the outer wall 130 of the main tower. The bottom of the inclined load steel wire rope 150 is connected to the lifting lug 200 of the longitudinal steel frame 160 of the platform, and the top is temporarily fixed with the help of the guide tube 140 at the inclined cable hole 120 on the main tower. The temporary fixation of the steel arch work platform is completed by using the two pairs of inclined load steel wire ropes 150 connected on the platform in conjunction with the horizontal steel support 170, the vertical steel support 180, and the inclined steel support 190.

[0038] S5. During the installation of the steel arch construction disc bracket 240, the construction bracket is stabilized and wind-resistant using technology to fix the I-beam 250 vertically, then connect the steel bracket 260 horizontally, and finally connect the steel bracket 260 to the concrete main tower hoop, so that the overall stability of the disc bracket 240 is improved, thereby resisting the risk of shaking caused by strong winds or other unstable factors during construction.

[0039] In this embodiment, if Figures 1 to 5As shown, at the pre-assembly construction site, high-strength chemical bolts 29 are first used to anchor the inclined support base plate 28 and the support base plate 47 to the hardened concrete ground within the site, achieving the fixed installation of the steel arch horizontal assembly frame within the site. The landscape steel arch segment is then hoisted above the steel support beam 11 for pre-assembly. During the construction process, a total station 270 is used to measure and calibrate the coordinates of the measuring points on the components. The height of the upper support 1 can be adjusted by twisting the high-strength threaded adjustment member 45 at the bottom of the frame. When adjusting the height of the frame, the inclined support 2 controls the position of the slider 22 in the slide 25 by rotating the adjustable screw 27, completing the height adjustment of the inclined support 2 structure. The horizontal position can be adjusted by using the hydraulic jack 16 in the upper support 1 to push and pull the sliding block 14.

[0040] Among them, the steel arch on-site horizontal assembly frame is composed of an upper bracket 1, a lower support 3, an oblique support 2, and a bottom adjustable support 4; the upper bracket 1 is provided with a steel support beam 11, a sliding block 14 and a fixedly connected block slide 15 are provided on the top of the steel support beam 11, and a limiting steel plate 12 and a firmly connected angle support steel plate 13 are provided at the end of the steel support beam 11. In addition, a hydraulic jack 16 is fixedly installed between the sliding block 14 and the limiting steel plate 12. The curvature of the contact surface of the sliding block 14 is determined according to the curvature of the steel arch segment component; the oblique support 2 is welded with a steel pad 23 at the top of the oblique support rod 21 and is firmly connected to the lower support member 3 through a tension bolt 24, and the bottom of the oblique support rod 21 is connected to the slide 25 The slider 22 is rotatably connected, the end of the slide 25 is provided with a screw positioning steel block 26 and an adjustable screw 27, and the bottom surface is fixedly connected to the inclined support base plate 28, and the inclined support base plate 28 is firmly connected to the site through high-strength chemical bolts 29; the bottom adjustable support 4 includes a top plate 43 fixedly connected to the bottom 3 of the lower support member 3, a steel sleeve 41 provided with a screw nut 42, a threaded screw 44 threadedly connected to the lower part of the screw nut 42, a high-strength threaded adjustment member 45 fixedly connected to the threaded screw 44, a threaded screw support 46 rotatably connected to the threaded screw 44, and a support base plate 47 fixedly connected to the threaded screw support 46, and the support base plate 47 is firmly connected to the site through high-strength chemical bolts 29.

[0041] like Figure 6 、 Figure 7 As shown, the temporary fixing device for the steel arch installation guide includes a limit support 81, a fixed connecting rib 82 and a high-strength tension bolt 83 connecting the limit support 81; when the upper and lower steel arch segments are welded, the limit supports 81 symmetrically arranged on the upper and lower steel arch segments are first aligned and temporarily fixed and connected by the high-strength tension bolt 83 (arranged in pairs on the lower installed and fixed steel arch segment 5 and the upper steel arch segment 6 being installed), and then the joints of the steel arch segments are welded; sufficient working space is reserved between the arrangement position of the limit support 81 and the construction weld position.

[0042] like Figure 8 、 Figure 9 、 Figure 10 As shown, the jacking construction platform device in the main tower consists of a fixed platform 101, a telescopic movable platform 102, a hydraulic jacking device 106, a boom 107 and a hydraulic telescopic device 103; when working in the concrete main tower cavity, the jacking construction platform device is first used to support the telescopic movable platform 102 on the concrete tooth block 110 to complete the construction and fixation of the device; when the construction of the current area is completed and the construction of the next area is about to begin, the telescopic movable platform 102 on the top floor is first retracted into the top floor fixed platform 101, and then the hydraulic jacking device 106 is used to jack the top floor platform to the set position and fixedly supported on the concrete tooth block 110 by the telescopic movable platform 102, then the telescopic movable platforms 102 on the middle and bottom floors are retracted and lifted upward by the hydraulic jacking device 106, and finally when the middle and bottom floors reach the designated position, the telescopic movable platform 102 is supported on the concrete tooth block 110 to complete the platform climbing and fixation before construction.

[0043] Among them, the jacking construction platform device in the main tower consists of a fixed platform 101, a telescopic mobile platform 102, a hydraulic jacking device 106, a boom 107 and a hydraulic telescopic device 103; the top and middle fixed platforms 101 in the jacking construction platform device are connected by a hydraulic jacking device 106 and the hydraulic jacking device 106 can be used to realize the overall climbing of the construction platform device, and the middle and bottom fixed platforms 101 are fixedly connected by a boom 107; the telescopic mobile platform 102 is telescoped inside and outside the fixed platform 101 by the hydraulic telescopic device 103 arranged on the side, and the contact part between the end of the telescopic mobile platform 102 and the concrete tooth block 110 is provided with anti-slip teeth 1021 to enhance friction; the hydraulic telescopic device 103 is firmly connected to the middle fixed block 105 through the end fixed block 104; the construction work area is arranged on the fixed platform 101 and the telescopic mobile platform 102 on the bottom floor, and is surrounded by a protective fence 108.

[0044] like Figure 11 、 Figure 12As shown, after the current landscape steel arch segment is fixed and installed, the steel arch work platform is first lifted to the specified position, and then the inclined load wire rope 150 is used to temporarily fix the platform to the outer wall 130 of the main tower. The bottom of the inclined load wire rope 150 is connected to the lifting lug 200 of the longitudinal steel frame 160 of the platform, and the top is temporarily consolidated with the help of the guide tube 140 at the inclined cable hole 120 on the main tower. The two pairs of inclined load wire ropes 150 connected on the platform are used in conjunction with the horizontal steel support 170, the vertical steel support 180, and the inclined steel support 190 to form a frame structure to complete the temporary fixation of the steel arch work platform; then after the lower buckle bracket 240 is erected in place, the temporary fixed connection of the steel arch work platform is released, and the work platform is fixed to the lower buckle bracket 240.

[0045] like Figure 13 、 Figure 14 As shown, first, the buckle bracket 240 is constructed on the steel arch part and vertically arranged to connect the I-beam 250 for vertical reinforcement. Then, the steel bracket 260 is fixed in the horizontal direction to form a hoop reinforcement between the bracket as a whole and the concrete main tower, thereby enhancing the overall stability of the bracket structure. The vertical setting interval range of the steel bracket 260 on the concrete main tower should be controlled within 10m.

[0046] Among them, the temporary fixation technology of the lifting work platform is to temporarily lift and fix the steel arch work platform on the outer wall 130 of the main tower with the help of the inclined load wire rope 150 before the installation of the new section of the steel arch; the bottom of the inclined load wire rope 150 is connected to the lifting lug 200 of the steel arch work platform, and the top is temporarily tied and fixed with the help of the guide tube 140 and the concrete tooth block 110 arranged in the inclined cable hole 120 on the main tower; the bottom frame of the steel arch work platform is composed of the platform longitudinal steel frame 160 and the platform transverse steel frame 230. The patterned steel plate 280 is laid in the working area and the enclosure structure 210 is set on the periphery. At the same time, the safety enclosure structure 220 is also arranged around the inner steel arch installation hole. In the working area, the steel arch work platform is firmly supported between the outer wall 130 of the main tower by the frame structure composed of inclined steel supports 190, transverse steel supports 170, and vertical steel supports 180.

[0047] Among them, the construction support is stable and wind-resistant technology. During the steel arch construction, the buckle bracket 240 is vertically arranged to connect the I-beam 250, and the steel bracket 260 is fixedly connected to the concrete main tower to form a hoop reinforcement.

[0048] Furthermore, a thread is provided in the hole of the screw positioning block 26 at the end of the slide 25 and is threadedly connected to the adjustable screw 27 .

[0049] Furthermore, there are no less than 8 groups of limit supports 81 provided at the weld 9, and the number thereof is evenly distributed on each side of the steel structure.

[0050] Furthermore, in the jacking construction platform device 10, there are no less than four suspension rods 107 arranged between the middle and bottom platforms.

[0051] Furthermore, no less than four groups of lifting lugs 200 are provided on the platform longitudinal steel frame 160 .

[0052] Furthermore, when the steel support 260 is used to clamp the concrete main tower to enhance stability, the vertical spacing range of the support on the concrete main tower should be controlled within 10m.

[0053] The parts not described in detail in this application are prior art, so this application does not describe them in detail.

[0054] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0055] Although this document uses a lot of professional terms, it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of this application; interpreting them as any additional restrictions is contrary to the spirit of this application.

[0056] This application is not limited to the above-mentioned optimal implementation method. Anyone can derive various other forms of products based on the inspiration of this application. However, no matter what changes are made in their shape or structure, any technical solution that is the same or similar to that of this application falls within the scope of protection of this application.

Claims

1. The construction structure of the special-shaped landscape steel arch main tower of the cable-stayed bridge is characterized by: include: A steel arch on-site horizontal assembly frame comprises an upper support (1), an oblique support (2), a lower support member (3) and a bottom adjustable support (4); the upper support (1) is provided with a steel support beam (11), a sliding block (14) and a fixedly connected block slide (15) are provided on the top of the steel support beam (11), a limiting steel plate (12) and a firmly connected angle support steel plate (13) are provided at the end of the steel support beam (11), and a hydraulic jack (13) is fixedly installed between the sliding block (14) and the limiting steel plate (12). 6); The oblique support (2) is welded with a steel plate (23) at the top of the oblique support rod (21) and is firmly connected to the lower support member (3) through a tension bolt (24); the bottom of the oblique support rod (21) is rotatably connected to the slider (22) in the chute (25); the end of the chute (25) is provided with a screw positioning steel block (26) and an adjustable screw (27); the bottom surface of the chute (25) is fixedly connected to the oblique support bottom plate (28), and the oblique support bottom plate (28) is firmly connected to the site through a high-strength chemical bolt (29); A temporary fixing device for guiding the installation of a steel arch comprises a limit support (81), a fixed connecting rib (82), and a high-strength tension bolt (83) connecting the limit support (81); the limit support (81) is arranged in pairs on the lower fixed steel arch segment (5) and the upper steel arch segment (6) being installed, with the weld (9) between the upper and lower segments as the symmetry axis, and sufficient working space is reserved between the arrangement position of the limit support (81) and the weld construction position; A jacking type construction platform device in a main tower comprises a fixed platform (101), a telescopic movable platform (102), a hydraulic jacking device (106), a suspension rod (107) and a hydraulic telescopic device (103); the top and middle fixed platforms (101) in the jacking type construction platform device are connected via a hydraulic jacking device (106) and the hydraulic jacking device (106) is used to achieve overall climbing of the construction platform device, and the middle and bottom fixed platforms (101) are fixedly connected via a suspension rod (107); the telescopic movable platform (102) is telescopically movable inside and outside the fixed platform (101) via a hydraulic telescopic device (103) arranged on the side; the contact portion between the end of the telescopic movable platform (102) and the concrete tooth block (110) is provided with anti-slip teeth (1021) to enhance friction; the hydraulic telescopic device (103) is firmly connected to the middle fixed block (105) via the end fixed block (104); Steel arch work platform, including bottom frame and work area.

2. The cable-stayed bridge special-shaped landscape steel arch main tower construction structure according to claim 1 is characterized in that: The temporary fixed structure of the lifting work platform is also included. The temporary fixed structure of the lifting work platform includes an inclined load wire rope (150), a guide tube (140) and a concrete tooth block (110). The structure is connected to the steel arch work platform and the main tower through the inclined load wire rope (150), and is connected to the main tower through the guide tube (140) and the concrete tooth block (110).

3. The cable-stayed bridge special-shaped landscape steel arch main tower construction structure according to claim 2 is characterized in that: The bottom frame of the steel arch work platform is composed of a platform longitudinal steel frame (160) and a platform transverse steel frame (230) connected together. A patterned steel plate (280) is laid in the work area and a protective member (210) is provided on the periphery. A safety protective structure (220) is arranged around the inner steel arch mounting hole. The steel arch work platform is firmly supported by a frame structure composed of oblique steel supports (190), transverse steel supports (170), and vertical steel supports (180) and the outer wall (130) of the main tower.

4. The cable-stayed bridge special-shaped landscape steel arch main tower construction structure according to any one of claims 1 to 3, characterized in that: It also includes a construction support stabilizing wind-resistant structure, which includes an I-beam (250) and a steel support (260).

5. The special-shaped landscape steel arch main tower construction structure of a cable-stayed bridge according to any one of claims 1 to 3, characterized in that: A thread is provided in the hole of the screw positioning steel block (26) at the end of the slide groove (25) and is threadedly connected to the adjustable screw (27).

6. The cable-stayed bridge special-shaped landscape steel arch main tower construction structure according to any one of claims 1 to 3, characterized in that: There are no less than 8 groups of limit supports (81) provided at the weld (9), and the number of limit supports (81) is evenly distributed on each side of the steel structure.

7. The cable-stayed bridge special-shaped landscape steel arch main tower construction structure according to any one of claims 1 to 3, characterized in that: In the jacking construction platform device (10), there are no less than four suspension rods (107) arranged between the middle and bottom platforms.

8. The cable-stayed bridge special-shaped landscape steel arch main tower construction structure according to claim 3 is characterized in that: The platform longitudinal steel frame (160) is provided with no less than four groups of lifting lug (200) components.

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