Method for constructing a suspension structure between cylindrical structures

Abstract

The application discloses a construction method of a suspension structure between cylinder structures, and comprises the following steps: S1, construction preparation; S2, completing the construction and installation of vertical structures and third facade structures; S3, installing a main frame; S4, integrally hoisting a floor structure on a second facade structure; and S5, layer-by-layer hoisting a floor structure on a first facade structure. The construction method is characterized in that the suspension structure design system adopts a scheme of a roof conversion layer structure and first, second and third facade structures, and the steel structure construction selects a scheme of integral lifting. The integral lifting is not only multiple but also mutually superposed. The integral lifting is first hoisted through the roof conversion layer structure, and then forms an integral body with the vertical structures. The integral lifting is then used to lift the lower floors. The conversion truss layer and the already-positioned floors are used to lift the lower floors. The construction is convenient, and the safety is high.

Description

Technical Field

[0001] This invention relates to a construction method for suspended structures between cylindrical structures. Background Technology

[0002] In recent years, China's economy has grown rapidly, and its steel production has remained the world's largest. The imbalance between population and land use, coupled with economic and technological support, has led to the rapid development of high-rise and super high-rise buildings in my country. To enhance the artistic appeal of these buildings, a new type of structural system has emerged – the suspended building structure. In this system, only the main load-bearing frame is on the ground, occupying a small area and not obstructing pedestrian flow; all other floors are suspended. This structure has a clear and defined force transmission path. Unlike the traditional top-down force transmission mode, in a suspended structure, most of the load is transferred from bottom to top to the main load-bearing frame through the tension of the suspension rods or cables, and then to the foundation. This force transmission method is compatible with the suspended force characteristics of tree-like structures in nature and conforms to the principles of natural force transmission.

[0003] The construction of suspended steel structure floors in existing technologies faces installation difficulties, mainly as follows:

[0004] 1. The top truss of this type of structure is heavy and has a high installation height. If a large crane is used for installation, it cannot meet the hoisting requirements. If a tower crane is used for high-altitude assembly, a temporary platform needs to be erected, which will greatly increase the amount of work and require reinforcement of the lower frame, which is not conducive to the safety, quality and schedule control of on-site installation.

[0005] 2. When installing suspended floors in this type of structure, the conventional approach is to assemble them piecemeal from top to bottom under the truss. Whether using a large crane or a tower crane, this is subject to interference from the top truss components. Setting up temporary platforms is a significant undertaking, and these platforms need to be moved downwards continuously as the floors are installed, which is time-consuming. Workers on these platforms are also engaged in long-term high-altitude work, which poses a safety risk. Summary of the Invention

[0006] The purpose of this invention is to provide a technical solution for the construction of a suspended structure between cylindrical structures, which addresses the shortcomings of existing technologies. This construction method involves multiple lifting operations that are superimposed on each other, and is convenient and safe to implement.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] A construction method for a suspended structure between cylindrical structures, characterized by the following steps:

[0009] S1. Construction Preparation: Determine the quantity, model, and installation node type of the lifting equipment according to the construction requirements;

[0010] S2. Complete the construction and installation of the vertical structure and the third facade structure;

[0011] S3. Installation of the main frame: Install lifting equipment at the top of the vertical structure, and use the lifting equipment to install the roof transfer layer structure onto the vertical structure. First, hoist the second truss, and then hoist the first truss to make the roof transfer layer structure and the vertical structure form an integral whole, thus completing the installation of the main frame.

[0012] S4. Overall hoisting of the suspended floor structure on the second facade structure: Add reinforcement rods near the hoisting point for temporary support, install lifting equipment along the second truss, and complete the assembly of the suspended floor structure on the ground for overall hoisting. After the suspended floor structure is installed, use a crawler crane to install the traditional floor roof structure below to complete the construction and installation of the second facade structure.

[0013] S5. Layered hoisting of the suspended floor structure on the first facade structure: Add reinforcing rods near the hoisting points for temporary support, install lifting equipment along the first truss, and complete the assembly of the suspended floor structure on the ground. The lifting is carried out in two stages to complete the construction and installation of the first facade structure.

[0014] This construction method utilizes a suspended structure design system that incorporates a roof transfer layer structure, as well as first, second, and third facade structures. The steel structure construction employs an overall lifting scheme, which involves multiple lifting operations that are also superimposed on each other. First, the roof transfer layer structure is hoisted to form an integral unit with the vertical structure. Then, the lower floors are lifted using this integral structure. Finally, the entire transfer truss layer and the already positioned floors are used to lift the next lower floors. This method is convenient and highly safe.

[0015] Furthermore, the first facade structure, the second facade structure, and the third facade structure are spliced ​​end to end to form a horizontal cross-section of an equilateral triangle structure. The first facade structure includes a first truss and a suspended floor structure connected below the first truss. The second facade structure includes a second truss and a suspended floor structure and a traditional floor roof structure connected below the second truss. The third facade structure includes a traditional floor roof structure, which is formed by connecting large-section steel beams.

[0016] Furthermore, the vertical structure in step S2 consists of a concrete core tube and steel-concrete composite columns. The steel-concrete composite columns are connected to the concrete core tube by steel beams for overall support and shear resistance.

[0017] Furthermore, in step S3, before lifting the roof transfer layer structure, the lifting points of the roof transfer layer structure are arranged so that the position of the lifting points is close to the vertical mechanism.

[0018] Furthermore, steel sections are added near the lifting points as temporary supports, and the same steel webs are used at both ends of the nodes. Double-clamp plates are used for symmetrical welding and fixing. When the roof transfer layer structure is lifted, the diagonal web members near the lifting points are temporarily removed, resulting in insufficient strength of the members at the lifting points and affecting the lifting safety. The design of temporary supports can improve the safety of the roof transfer layer structure during lifting.

[0019] Furthermore, in step S4, when assembling the suspended floor structure on the ground, the actual distance between the splicing points of the second truss is first measured, and the truss is assembled at the projection position on the basement roof slab. Then, the end of the steel column above ground of the traditional floor roof structure is used as a support, and a "7"-shaped connecting plate is used to connect the lower chord of the truss and the connecting lug on the end of the steel column above ground, which facilitates the assembly of the truss.

[0020] Furthermore, during the lifting of the suspended floor structure in steps S4 and S5, the bolt holes on the pre-embedded brackets are changed to elliptical holes, and the supplementary steel beam is made 50mm longer. After actual on-site measurement, the bolt holes on the pre-embedded brackets are drilled using a magnetic drill. Because the gap between the floor beams at both ends and the pre-embedded brackets at the vertical structure is small during the lifting of the suspended floor structure, even a slight external force can cause the lifting structure to collide with the brackets, resulting in component damage or even the entire lifting structure to overturn, causing huge losses. Through the above steps, the problem of the supplementary steel beam being unable to be installed due to the installation error of the pre-embedded brackets can be avoided.

[0021] Furthermore, during the lifting of the suspended floor structure in steps S4 and S5, steel wire ropes running vertically from the top to the ground are added near both ends of the lifting structure. The lifting structure is then horizontally limited by limit rods and steel wire ropes. Due to the high lifting height of the lifting structure, it cannot be lifted to the final position in one go. At high altitudes, the wind force is strong, which can easily cause the structure to overturn due to large swing amplitude. Conventionally, horizontal limit steel wire ropes, shackles, and guide chains are set at both ends. However, there is an operating space on the outside of the lifting structure, which prevents workers from using the limit device for limitation. The above structure can greatly improve the stability and reliability of the lifting structure during lifting, and further improve the safety during construction.

[0022] Furthermore, the limiting rod includes a wire rope connecting part, a length adjusting part, and an angle adjusting part. The wire rope connecting part is connected to the angle adjusting part through the length adjusting part. The wire rope connecting part consists of two steel bars with arcs. The steel bars are connected to the length adjusting part by bolts. The two arcs fit together to form a circular hole for threading the wire rope. The length adjusting part includes a U-shaped end connected to the wire rope connecting part, a threaded round rod, an adjusting rod, and a square rod. The threaded round rod is fixed to the U-shaped end. The adjusting rod is threadedly connected to the threaded round rod. The adjusting rod is rotatably connected to the square rod through a first axle wheel. The angle adjusting part includes a steel plate end, a U-shaped head, and a limiting component. The steel plate end is welded to the lifting structure and the U-shaped head. The U-shaped head is connected to the square rod through a geared shaft. The limiting component includes a limiting head, a second axle wheel, and a bolt. The limiting head is located on the second axle wheel, and the bolt is connected to the second axle wheel. The limiting component locks the geared shaft, thus fixing the angle adjusting part and the length adjusting part.

[0023] Furthermore, during the lifting of the suspended floor structure, manual measurement is used for auxiliary monitoring. Before lifting, measurement points are set on the ground below each lifting point. During the lifting process, after each lifting distance, a laser rangefinder is used to measure the absolute height of each lifting point and compare the height difference. When the relative maximum height difference is greater than the preset value, adjustments are made through manual control. Since it is impossible to guarantee that the lifting points are completely synchronized during lifting, and the lifting structure is high and takes a long time, the accumulated error can easily lead to uneven stress on the lifting points, causing safety hazards.

[0024] The present invention, by adopting the above-described technical solution, has the following beneficial effects:

[0025] 1. By expanding the equipment's configuration, weight, span, and area can be increased without limitations.

[0026] 2. The lifting process is very safe, and the components can be locked at any position during the lifting process. Any lifting device can also be adjusted individually with high precision, which effectively improves the controllability of installation accuracy during the structural lifting process.

[0027] 3. Flexible rigging is used for load-bearing, and as long as there are reasonable load-bearing points, the lifting height is not limited.

[0028] 4. The lifting equipment is small in size, light in weight, and has a large load-bearing capacity, making it particularly suitable for lifting large equipment.

[0029] 5. The hydraulic lifter is driven by a hydraulic circuit. During operation, the acceleration is extremely small, and there is almost no additional dynamic load (vibration and impact) on the lifted equipment and the lifting frame structure.

[0030] 6. The equipment is highly automated, easy and flexible to operate, safe, reliable, and versatile.

[0031] 7. The hydraulic synchronous lifting system uses computer control to synchronize each lifting point, ensuring that the components maintain a stable lifting posture during the lifting process, and achieving high precision in synchronous control.

[0032] 8. It can make full use of the on-site construction work area, which is beneficial to the overall project schedule control. Attached Figure Description

[0033] The present invention will be further described below with reference to the accompanying drawings:

[0034] Figure 1 This is a flowchart of the construction method for the suspended structure between the cylindrical structures of the present invention;

[0035] Figure 2 This is a rendering of the suspension structure in this invention;

[0036] Figure 3 This is a rendering of the first facade structure in this invention;

[0037] Figure 4 This is a rendering of the second facade structure in this invention;

[0038] Figure 5 This is a rendering of the third facade structure in this invention;

[0039] Figure 6 This is a schematic diagram showing the completed vertical structure and third facade structure in this invention;

[0040] Figure 7 This is a schematic diagram of the installation of the second truss in this invention;

[0041] Figure 8 This is a schematic diagram of the completed main structure of the present invention;

[0042] Figure 9 This is a schematic diagram of the installation of the second facade structure in this invention;

[0043] Figure 10 This is a schematic diagram of the installation of the first facade structure in this invention;

[0044] Figure 11 This is a schematic diagram of the temporary fixed node between the end of the steel column above ground and the lower chord of the truss in this invention;

[0045] Figure 12 This is a schematic diagram of the temporary support connection node in this invention;

[0046] Figure 13 This is a schematic diagram of the modified and supplemented steel beams at both ends of the raised floor in this invention;

[0047] Figure 14 This is a schematic diagram of the pre-embedded corbel and the subsequent steel beam in this invention;

[0048] Figure 15 This is a schematic diagram of the horizontal limiting of the lifting structure in this invention;

[0049] Figure 16 This is a schematic diagram of the horizontal limiting rod in this invention;

[0050] Figure 17 for Figure 16 Schematic diagram of the structure in the AA direction;

[0051] Figure 18 This is a schematic diagram of the installation of the limiting component in this invention;

[0052] Figure 19 This is a schematic diagram of the structure after the limiting component in this invention has been limited.

[0053] In the diagram: 1-Vertical structure; 2-Roof transfer layer structure; 3-Suspended floor structure; 4-First facade structure; 5-Second facade structure; 6-Third facade structure; 7-Traditional floor roof structure; 8-First truss; 9-Second truss; 10-Steel column end protruding above ground; 11-Truss lower chord; 12-Connecting lug; 13-Connecting plate; 14-Steel section; 15-Steel plate; 16-Double-ply plate; 17-Embedded bracket; 18-Additional steel beam; 19-Ellipse 20-Round hole; 21-Limiting rod; 22-Wire rope; 23-Lifting structure; 24-Wire rope connection part; 25-Length adjustment part; 26-Angle adjustment part; 27-Steel bar; 28-Circular arc; 29-U-shaped end; 30-Threaded round rod; 31-Adjusting rod; 32-First shaft wheel; 33-Square rod; 34-Geared shaft; 35-Limiting component; 36-Steel plate end; 37-U-shaped head; 38-Limiting head; 39-Second shaft wheel; 30-Bolt. Detailed Implementation

[0054] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0055] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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 should fall within the scope of protection of the present invention.

[0056] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0057] The suspended structure between the cylindrical structures of this invention includes a first facade structure 4, a second facade structure 5, and a third facade structure 6. The first facade structure 4, the second facade structure 5, and the third facade structure 6 are spliced ​​end to end to form a horizontally equilateral triangular structure. The first facade structure 4 includes a first truss 8 and a suspended floor structure 3 connected below the first truss 8. The second facade structure 5 includes a second truss 9 and a suspended floor structure 3 and a traditional floor roof structure 7 connected below the second truss 9. The third facade structure 6 includes the traditional floor roof structure 7, which is formed by connecting large-section steel beams.

[0058] like Figures 1 to 19 The diagram illustrates the construction method for the suspended structure between cylindrical structures according to the present invention, comprising the following steps:

[0059] S1. Construction Preparation: Determine the quantity, model, and installation node type of the lifting equipment according to the construction requirements;

[0060] S2. Complete the construction and installation of vertical structure 1 and third facade structure 6;

[0061] Vertical structure 1 consists of a concrete core tube and steel-concrete composite columns. The steel-concrete composite columns are connected to the concrete core tube by steel beams for overall support and shear resistance.

[0062] S3. Installation of the main frame: Install lifting equipment on the top of the vertical structure 1, and use the lifting equipment to install the roof transfer layer structure 2 onto the vertical structure 1. First, hoist and install the second truss 9, and then hoist and install the first truss 8, so that the roof transfer layer structure 2 and the vertical structure 1 form an integral whole, and complete the installation of the main frame.

[0063] Before lifting, the suspension points of the roof transfer layer structure 2 are arranged so that the position of the suspension points is close to the vertical mechanism.

[0064] A steel section 14 is added near the lifting point as a temporary support. The two end nodes use the same steel section 14 web plate and are symmetrically welded and fixed with double-clamp plates 16. When the roof transfer layer structure 2 is lifted, the diagonal web members near the lifting point are temporarily removed, resulting in insufficient strength of the members at the lifting point and affecting the lifting safety. The design of temporary support can improve the safety of the roof transfer layer structure 2 during lifting.

[0065] Install a hydraulic synchronous lifting system, including a hydraulic lifter, hydraulic pump station, control system, ground anchors, steel strands, and control lines. Install a steel wire rope 21 running vertically from the top to the ground near the hydraulic lifter, and then install a limit rod 20 for horizontal limiting.

[0066] The hydraulic synchronous lifting system was debugged, and the steel strands were tensioned to ensure uniform stress on them. The hydraulic synchronous lifting system was preloaded in stages, sequentially loading at 20%-40%-60%-80%-90%-95%-100% of the design preload, until the truss structure detached from the assembly jig and was lifted to a certain height (150-200mm), where it remained suspended in the air.

[0067] The elevation of each lifting point was adjusted individually to ensure the truss structure was in a horizontal position, and observation was conducted for approximately 12 hours.

[0068] While ensuring the safety of the synchronous lifting system equipment, temporary measures (lifting platform, lifting gear, reinforcing members, etc.) and permanent structures (trusses, etc.), continue to synchronously lift the truss structure. During lifting, every 10m interval, use a laser rangefinder to measure the absolute height of each lifting point and compare the height difference. When the relative maximum height difference exceeds the preset value, immediately adjust it manually.

[0069] Lift the truss structure to approximately 1 meter from the design elevation, then pause the lifting. Measure the relative dimensions of the corbels and main chords at each joint of the truss to ensure they meet the lifting requirements. If not, make appropriate adjustments to meet the joint dimensions to facilitate the lifting operation. Adjust the hydraulic lifting speed and continue lifting at a slower pace to gradually reach the design elevation (5-6 m / h). When the truss structure reaches approximately 50 mm from the design elevation (highest point), stop lifting and individually adjust the elevation of each lifting point to sequentially reach the design elevation. Fix and weld the lifted portion of the truss structure to the upper corbels, complete any pre-installed members, dismantle the hydraulic lifting system and other temporary lifting measures, and the hydraulic synchronous lifting operation is complete.

[0070] S4. Overall hoisting of the suspended floor structure 3 on the second facade structure 5: Add reinforcing rods near the hoisting point for temporary support, install lifting equipment along the second truss 9, and complete the assembly of the suspended floor structure 3 on the ground for overall hoisting. After the suspended floor structure 3 is installed, use a crawler crane to install the traditional floor roof structure 7 below to complete the construction and installation of the second facade structure 5.

[0071] When assembling the suspended floor structure 3 on the ground, first measure the actual distance between the splicing points of the second truss 9, assemble it at the truss projection position on the basement roof slab, and then use the ground-exit steel column end 10 of the traditional floor roof structure 7 as a support. Use the "7"-shaped connecting plate 13 to connect the lower chord 11 of the truss and the connecting lug 12 on the ground-exit steel column end 10 to facilitate the assembly of the truss. If it is assembled first on the open space next to it and then moved to the projection surface of the truss installation position, it will affect the construction efficiency. If the steel column extending from the ground is used as the support point, the truss will tilt to one side when it is assembled above because the members have corbels and the center of gravity is biased to one side.

[0072] When the suspended floor structure 3 is lifted, the bolt holes 39 on the pre-embedded bracket 17 are changed to elliptical holes 19, and the supplementary steel beam 18 is made 50mm longer. After actual on-site measurement, the bolt holes 39 on the pre-embedded bracket 17 are drilled using a magnetic drill. Because the gap between the floor beams at both ends and the pre-embedded bracket 17 at the vertical structure 1 is small when the suspended floor structure 3 is lifted, even a slight external force will cause the lifting structure 22 to collide with the bracket, causing damage to the components, or even causing the lifting structure 22 to overturn and cause huge losses. Through the above steps, the problem of the supplementary steel beam 18 being unable to be installed due to the installation error of the pre-embedded bracket 17 can be avoided.

[0073] When the suspended floor structure 3 is being lifted, steel wire ropes 21 extending vertically from the top to the ground are added near both ends of the lifting structure 22. The lifting structure 22 is then horizontally limited by the limiting rods 20 and the steel wire ropes 21. Because the lifting height of the lifting structure 22 is relatively high, it cannot be lifted to the final position in one go. At high altitudes, the wind force is strong, and the structure is prone to overturning due to large swing amplitude. Conventionally, horizontal limiting steel wire ropes 21, shackles, and guide chains are set at both ends. However, the lifting structure 22 has an operating space on its outside, and workers cannot use the limiting device to limit it. The above structure can greatly improve the stability and reliability of the lifting structure 22 during lifting, and further improve the safety during construction.

[0074] The limiting rod 20 includes a wire rope connecting part 23, a length adjusting part 24, and an angle adjusting part 25. The wire rope connecting part 23 is connected to the angle adjusting part 25 through the length adjusting part 24, which facilitates connection with the lifting structure by welding.

[0075] The wire rope connecting part 23 consists of two steel bars 26 with arcs 27. The steel bars 26 are connected to the length adjusting part 24 by bolts. The two arcs 27 fit together to form a round hole for threading the wire rope 21. The other end of the steel bar is connected by bolts.

[0076] The length adjustment part 24 includes a U-shaped end 28 connected to the wire rope connection part 23, a threaded round rod 29, an adjusting rod 30, and a square rod 32. The threaded round rod 29 is fixed to the U-shaped end 28. The adjusting rod 30 is threadedly connected to the threaded round rod 29. The adjusting rod 30 is rotatably connected to the square rod 32 through the first axle wheel 31. When the adjusting rod is rotated, the square rod is prevented from rotating and the entire device is extended.

[0077] The angle adjustment part 25 includes a steel plate end 35, a U-shaped head 36 and a limiting member 34. The steel plate end 35 is welded to the lifting structure 22 and the U-shaped head 36. The U-shaped head 36 is connected to the square rod 32 through a geared shaft 33.

[0078] The limiting member 34 includes a limiting head 37, a second shaft wheel 38, and a bolt 39. The limiting head 37 is disposed on the second shaft wheel 38, and the bolt 39 is connected to the second shaft wheel 38. The limiting member 34 locks the geared shaft 33, thereby fixing the angle adjustment part 25 and the length adjustment part 24.

[0079] During the lifting of the suspended floor structure 3, manual measurement is used for auxiliary monitoring. Before lifting, measurement points are set on the ground below each lifting point. During the lifting process, after each lifting distance, a laser rangefinder is used to measure the absolute height of each lifting point and compare the height difference. When the relative maximum height difference is greater than the preset value, it is adjusted by manual control. Since it is impossible to guarantee that the lifting points are completely synchronized during lifting, and the lifting structure 22 is high and takes a long time, the accumulated error can easily lead to uneven stress on the lifting points, causing safety hazards.

[0080] S5. Layered hoisting of the floor structure 3 suspended on the first facade structure 4: Add reinforcing rods near the hoisting point for temporary support, install lifting equipment along the first truss 8, and complete the assembly of the suspended floor structure 3 on the ground. The lifting is carried out in two stages to complete the construction and installation of the first facade structure 4.

[0081] When the suspended floor structure 3 is lifted, the bolt holes 39 on the pre-embedded bracket 17 are changed to elliptical holes 19, and the supplementary steel beam 18 is made 50mm longer. After actual on-site measurement, the bolt holes 39 on the pre-embedded bracket 17 are drilled using a magnetic drill. Because the gap between the floor beams at both ends and the pre-embedded bracket 17 at the vertical structure 1 is small when the suspended floor structure 3 is lifted, even a slight external force will cause the lifting structure 22 to collide with the bracket, causing damage to the components, or even causing the lifting structure 22 to overturn and cause huge losses. Through the above steps, the problem of the supplementary steel beam 18 being unable to be installed due to the installation error of the pre-embedded bracket 17 can be avoided.

[0082] When the suspended floor structure 3 is being lifted, steel wire ropes 21 extending vertically from the top to the ground are added near both ends of the lifting structure 22. The lifting structure 22 is then horizontally limited by the limiting rods 20 and the steel wire ropes 21. Because the lifting height of the lifting structure 22 is relatively high, it cannot be lifted to the final position in one go. At high altitudes, the wind force is strong, and the structure is prone to overturning due to large swing amplitude. Conventionally, horizontal limiting steel wire ropes 21, shackles, and guide chains are set at both ends. However, the lifting structure 22 has an operating space on its outside, and workers cannot use the limiting device to limit it. The above structure can greatly improve the stability and reliability of the lifting structure 22 during lifting, and further improve the safety during construction.

[0083] The limiting rod 20 includes a wire rope connecting part 23, a length adjusting part 24, and an angle adjusting part 25. The wire rope connecting part 23 is connected to the angle adjusting part 25 through the length adjusting part 24, which facilitates connection with the lifting structure by welding.

[0084] The wire rope connecting part 23 consists of two steel bars 26 with arcs 27. The steel bars 26 are connected to the length adjusting part 24 by bolts. The two arcs 27 fit together to form a round hole for threading the wire rope 21. The other end of the steel bar is connected by bolts.

[0085] The length adjustment part 24 includes a U-shaped end 28 connected to the wire rope connection part 23, a threaded round rod 29, an adjusting rod 30, and a square rod 32. The threaded round rod 29 is fixed to the U-shaped end 28. The adjusting rod 30 is threadedly connected to the threaded round rod 29. The adjusting rod 30 is rotatably connected to the square rod 32 through the first axle wheel 31. When the adjusting rod is rotated, the square rod is prevented from rotating and the entire device is extended.

[0086] The angle adjustment part 25 includes a steel plate end 35, a U-shaped head 36 and a limiting member 34. The steel plate end 35 is welded to the lifting structure 22 and the U-shaped head 36. The U-shaped head 36 is connected to the square rod 32 through a geared shaft 33.

[0087] The limiting member 34 includes a limiting head 37, a second shaft wheel 38, and a bolt 39. The limiting head 37 is disposed on the second shaft wheel 38, and the bolt 39 is connected to the second shaft wheel 38. The limiting member 34 locks the geared shaft 33, thereby fixing the angle adjustment part 25 and the length adjustment part 24.

[0088] During the lifting of the suspended floor structure 3, manual measurement is used for auxiliary monitoring. Before lifting, measurement points are set on the ground below each lifting point. During the lifting process, after each lifting distance, a laser rangefinder is used to measure the absolute height of each lifting point and compare the height difference. When the relative maximum height difference is greater than the preset value, it is adjusted by manual control. Since it is impossible to guarantee that the lifting points are completely synchronized during lifting, and the lifting structure 22 is high and takes a long time, the accumulated error can easily lead to uneven stress on the lifting points, causing safety hazards.

[0089] This construction method utilizes a suspended structure design system with a roof transfer layer structure 2, a first facade structure 4, a second facade structure 5, and a third facade structure 6. The steel structure construction employs an overall lifting scheme, which involves multiple lifting operations that are also superimposed on each other. First, the roof transfer layer structure 2 is hoisted and integrated with the vertical structure 1 to form a whole. Then, the lower floors are lifted using the entire structure. Finally, the lower floors are lifted using the overall transfer truss layer and the already positioned floors. This construction method is convenient and highly safe.

[0090] The above are merely specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on the present invention to achieve substantially the same technical effect are all covered within the protection scope of the present invention.

Claims

1. A construction method for a suspended structure between cylindrical structures, characterized in that, The suspended structure between the cylindrical structures includes a first facade structure, a second facade structure, and a third facade structure. These three facade structures are joined end-to-end to form an equilateral triangle structure in horizontal cross-section. The first facade structure includes a first truss and a suspended floor structure connected below the first truss. The second facade structure includes a second truss and a suspended floor structure and a traditional floor roof structure connected below the second truss. The third facade structure includes a traditional floor roof structure, which is formed by connecting large-section steel beams. The construction method includes the following steps: S1. Construction Preparation: Determine the quantity, model, and installation node type of the lifting equipment according to the construction requirements; S2. Complete the construction and installation of the vertical structure and the third facade structure; S3. Installation of the main frame: Install lifting equipment at the top of the vertical structure, and use the lifting equipment to install the roof transfer layer structure onto the vertical structure. First, hoist the second truss, and then hoist the first truss to make the roof transfer layer structure and the vertical structure form an integral whole, thus completing the installation of the main frame. S4. Overall hoisting of the suspended floor structure on the second facade structure: Add reinforcement rods near the hoisting point for temporary support, install lifting equipment along the second truss, and complete the assembly of the suspended floor structure on the ground for overall hoisting. After the suspended floor structure is installed, use a crawler crane to install the traditional floor roof structure below to complete the construction and installation of the second facade structure. S5. Layered hoisting of the suspended floor structure on the first facade structure: Add reinforcing rods near the hoisting points for temporary support, install lifting equipment along the first truss, and complete the assembly of the suspended floor structure on the ground. The lifting is carried out in two stages to complete the construction and installation of the first facade structure.

2. The construction method for the suspended structure between cylindrical structures according to claim 1, characterized in that: The vertical structure in step S2 consists of a concrete core tube and steel-concrete composite columns. The steel-concrete composite columns are connected to the concrete core tube by steel beams for overall support and shear resistance.

3. The construction method for the suspended structure between cylindrical structures according to claim 1, characterized in that: Before lifting the roof transfer layer structure in step S3, the lifting points of the roof transfer layer structure are arranged so that the position of the lifting points is close to the vertical mechanism.

4. The construction method for the suspended structure between cylindrical structures according to claim 3, characterized in that: A steel section is added near the lifting point as a temporary support, and the two end nodes use the same steel web and are fixed by symmetrical welding with double clamps.

5. The construction method for the suspended structure between cylindrical structures according to claim 1, characterized in that: In step S4, when assembling the suspended floor structure on the ground, first measure the actual distance of the second truss splicing point, assemble the truss at the projection position on the basement roof slab, and then use the ground-exit steel column end of the traditional floor roof structure as a support, and use a "7"-shaped connecting plate to connect the lower chord of the truss and the connecting lug plate on the ground-exit steel column end.

6. The construction method for the suspended structure between cylindrical structures according to claim 1, characterized in that: When the suspended floor structure described in steps S4 and S5 is being lifted, the bolt holes on the pre-embedded brackets are changed to elliptical holes, and the supplementary steel beam is made 50mm longer. After actual on-site measurement, a magnetic drill is used to drill the bolt holes on the pre-embedded brackets.

7. The construction method for the suspended structure between cylindrical structures according to claim 1, characterized in that: When the suspended floor structure described in steps S4 and S5 is being lifted, steel wire ropes are added near both ends of the lifting structure, running vertically from the top to the ground. Then, the lifting structure is horizontally limited by the limiting rods and the steel wire ropes.

8. The construction method for the suspended structure between cylindrical structures according to claim 7, characterized in that: The limiting rod includes a wire rope connecting part, a length adjusting part, and an angle adjusting part. The wire rope connecting part is connected to the angle adjusting part through the length adjusting part. The wire rope connecting part consists of two steel bars with arcs, which are bolted to the length adjusting part. The two arcs fit together to form a circular hole for fitting the wire rope. The length adjusting part includes a U-shaped end connected to the wire rope connecting part, a threaded round rod, an adjusting rod, and a square rod. The threaded round rod is fixed to the U-shaped end, and the adjusting rod is connected to the angle adjusting part. The threaded round rod is connected by a threaded connection. The adjusting rod is rotatably connected to the square rod via a first axle wheel. The angle adjusting part includes a steel plate end, a U-shaped head, and a limiting member. The steel plate end is welded to the lifting structure and the U-shaped head. The U-shaped head is connected to the square rod via a geared shaft. The limiting member includes a limiting head, a second axle wheel, and a bolt. The limiting head is located on the second axle wheel, and the bolt is connected to the second axle wheel. The limiting member locks the geared shaft, thereby fixing the angle adjusting part and the length adjusting part together.

9. The construction method for the suspended structure between cylindrical structures according to claim 7, characterized in that: During the lifting of the suspended floor structure, manual measurement is used for auxiliary monitoring. Before lifting, measurement points are set on the ground below each lifting point. During the lifting process, after each lifting distance, a laser rangefinder is used to measure the absolute height of each lifting point and compare the height difference. When the relative maximum height difference is greater than the preset value, it is adjusted by manual control.

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