Installation method of high-altitude special-shaped steel structure sky corridor

Abstract

The present application relates to a kind of high-altitude special-shaped steel structure aerial gallery installation method, comprising the following steps: a. steel structure gallery is divided into pre-installation structure, lifting structure and post-supplement structure;B. pre-installation structure is assembled in high altitude using hoisting equipment, and pre-installation structure is installed on the support on the two sides of building main body;C. lifting structure is assembled as a whole on the ground directly below installation position;D. setting up lifting point on the pre-installation structure of two sides, and installing lifting equipment on lifting point;E. setting up lower lifting point on lifting structure;F. lifting equipment is connected with lower lifting point by steel strand;G. lifting structure is tried to lift;H. lifting structure is lifted to design elevation;I. after lifting structure is lifted in place, lifting structure and pre-installation structure are welded;J. install post-supplement structure;K. after acceptance, remove lifting equipment, and lifting construction operation is completed.The present application can complete high-altitude special-shaped gallery construction with lower cost and greater safety.

Description

Technical Field

[0001] This invention relates to a method for constructing a connecting corridor, specifically a method for installing an aerial connecting corridor with an irregularly shaped steel structure at high altitude. Background Technology

[0002] With urban development, urban architectural styles are becoming increasingly diverse and complex. The installation of steel-structured walkways between high-rise buildings has become a new norm. Normally, the construction of regular steel-structured walkways is relatively simple. They can be fabricated as a single unit and then hoisted into place using large hoisting equipment or lifted into position in one go using lifting equipment. However, with the increasing size, irregular shapes, and complexity of the surrounding environment of these walkways, the safety and quality risks of one-time hoisting or lifting are extremely high, and the costs are significantly increased, exceeding the capacity of construction companies.

[0003] Therefore, there is an urgent need for a method that can complete the construction of high-altitude irregular-shaped corridors with lower costs and greater safety. Summary of the Invention

[0004] The purpose of this invention is to provide a method for installing aerial walkways with irregularly shaped steel structures at high altitudes, in order to solve the problems of high safety and quality risks and high costs associated with the existing one-time hoisting or lifting installation of aerial walkways.

[0005] This invention is implemented as follows: a method for installing an aerial walkway with an irregularly shaped steel structure at high altitude, comprising the following steps: a. The steel structure corridor is divided into pre-assembled structure, lifting structure and post-construction structure. The side truss parts at both ends of the steel structure corridor are pre-assembled structures, the middle part of the steel structure corridor is lifting structure, and the connecting rod between the side truss and the middle part is post-construction structure. b. Use hoisting equipment to assemble the prefabricated structure at the height of the connecting corridor, and install the prefabricated structure on the supports on the main building on both sides; c. Assemble the lifting structure as a whole on the ground directly below the installation location; d. Set up lifting points on the pre-assembled structures on both sides, and install lifting equipment on the lifting points; e. Set a lower lifting point on the lifting structure at the position corresponding to the upper lifting point; f. The lifting equipment is connected to the lower suspension point via steel strands; g. Conduct a trial lift of the lifting structure to check whether the welds and deformation of the structure are normal; h. Raise the lifting structure to the design elevation and make fine adjustments using lifting equipment to ensure precise alignment between the lifting structure and the pre-installed structure; i. After the lifting structure is lifted into place, the lifting equipment is locked. Under stable locked conditions, the lifting structure and the pre-installed structure are welded together, so that the weight of the lifting structure is transferred to the main building structure. j. Post-installation structural repair; k. After acceptance, dismantle the lifting equipment, and the lifting operation is completed.

[0006] Furthermore, during the assembly of the pre-assembled structure and the lifting structure, reinforcing rods are added to the pre-assembled structure and the lifting structure respectively to increase the structural strength of the ends of the pre-assembled structure and the lifting structure. After the subsequent structure is installed, the reinforcing rods are removed.

[0007] Furthermore, both the upper and lower suspension points are corbel structures.

[0008] Furthermore, two lifting points are provided at each of the four corners of the lifting structure.

[0009] Furthermore, the lifting device is a hydraulic lifter.

[0010] Furthermore, in step g, the lifting structure is loaded step by step using the lifting equipment in the order of 20%, 40%, 60%, 70%, 80%, 90%, 95%, and 100% of the design load, until the lifting structure detaches from the assembly platform; after the lifting structure detaches from the assembly platform by 50-150mm, the lifting is paused; the elevation of each lifting point of the lifting unit is finely adjusted to ensure it is level, and the unit is left to stand for 12 hours; the lifting structure and lifting equipment are checked for any abnormalities; after confirming that there are no abnormalities, the formal lifting begins.

[0011] Furthermore, in step b, the upper and lower chords of the pre-assembled structure are fabricated in sections. After the side truss is laid out, fabricated, and welded as a whole in the factory, the upper and lower chords are then divided into sections, and the joint bevels are cut on the segmented surfaces of the upper and lower chords. The segmented upper and lower chords and web members are then assembled at high altitude.

[0012] Furthermore, in step c, the assembly steps for the lifting section are as follows: Step 1: Assemble the lower chord, web members, upper chord, and diagonal web members of one side of the lifting section truss; Step 2: Assemble the lower chord, web members, upper chord, and diagonal web members of the truss on the other side of the lifting section; Step 3: Assemble the connecting beams of the lower chords of the trusses on both sides of the lifting section; Step 4: Assemble the connecting secondary beams of the lower chords of the trusses on both sides of the lifting section; Step 5: Assemble the connecting beams of the upper chords of the trusses on both sides of the lifting section; For the trusses on both sides of the lifting section, the upper and lower chords of the longer trusses are manufactured and assembled in sections.

[0013] The present invention discloses a method for installing an aerial walkway with an irregularly shaped steel structure. The walkway is divided into a pre-assembled structure, a lifting structure, and a post-installation structure. The pre-assembled structure is lightweight and can be assembled and installed at high altitude using small-tonnage hoisting equipment. After the pre-assembled structure is installed, lifting points are set on it, and hoisting devices are installed. The lifting structure is then assembled on the ground and raised to a predetermined height using the hoisting devices. The lifting structure is then connected to the pre-assembled structure. After the post-installation structure is completed, the installation of the aerial walkway with the irregularly shaped steel structure is finished. This method avoids the use of large hoisting equipment, reducing construction costs. Segmented hoisting reduces the weight, difficulty, and risk of each hoisting operation, and facilitates ensuring stability during the hoisting process and smooth connection with the main building. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the installation method of the aerial corridor of the high-altitude irregular steel structure of the present invention.

[0015] Figure 2 This is a schematic diagram of the lifting structure after it has been lifted into place according to the present invention.

[0016] Figure 3 This is a schematic diagram of the installation of the supplementary structure of the present invention.

[0017] Figure 4 This is a schematic diagram showing the completed installation of the connecting corridor of the present invention.

[0018] Figure 5 This is a segmented diagram of the steel structure connecting corridor of the present invention.

[0019] Figure 6 This is a diagram showing the distribution of lifting points of the lifting structure in this invention.

[0020] Figure 7 This is a diagram showing the location of the reinforcing rods in the lifting structure and pre-assembled structure of this invention.

[0021] Figure 8 This is a model diagram of the structure before the improvement of the present invention.

[0022] Figure 9 This is a model diagram of the improved state of the structure in this invention.

[0023] Figure 10 This is a model diagram of the lifting structure after it has been lifted into place according to the present invention.

[0024] Figure 11 This is a model diagram of the post-installation supplementary structure of the present invention.

[0025] Figure 12 A model diagram of the completed construction of this invention.

[0026] In the diagram: 1. Main building; 2. Pre-assembled structure; 3. Lifting structure; 4. Post-installation structure; 5. Reinforcing rod; 6. Upper lifting point; 7. Lower lifting point; 8. Lifting equipment; 9. Steel strand; 10. Support; 11. Assembly platform. Detailed Implementation

[0027] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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.

[0028] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] like Figures 1 to 12 As shown, this invention is a method for installing an aerial walkway with an irregularly shaped steel structure at high altitude. The specific steps of the method are explained below using a fan-shaped steel structure walkway as an example.

[0030] a. The fan-shaped steel structure corridor consists of four main trusses (front, rear, left, and right) and connecting beams, all with box-shaped cross-sections. For example... Figure 5 As shown, the fan-shaped steel structure corridor is divided into pre-assembled structure 2, lifting structure 3, and post-construction structure 4. The side truss sections at the left and right ends of the steel structure corridor are divided into pre-assembled structure 2. The middle section of the steel structure corridor includes the trusses on the front and rear sides and the connecting beams on the top and bottom. This middle section is divided into lifting structure 3, while the connecting rods between the side trusses and the middle section are divided into post-construction structure 4.

[0031] b. Use hoisting equipment to assemble the prefabricated structure 2 at the height of the connecting corridor, and install the prefabricated structure 2 on the supports 10 on the main building 1 on both sides.

[0032] The upper and lower chords of prefabricated structure 2 are fabricated in sections, with the section surfaces avoiding the joint areas of the upper and lower chords. Each truss is laid out and fabricated as a whole in the factory according to the camber value of L / 1000, and then welded before being segmented to ensure that the upper and lower chords do not misalign. The upper and lower chords at the section surfaces are directly beveled. The segmented upper and lower chords and web members are then transported to the site for assembly.

[0033] The upper and lower chords, as well as the web members, are assembled at high altitude using a mobile crane.

[0034] When hoisting and assembling the pre-assembled structure 2, the sequence is as follows: hoist the first section of the side truss into position and weld it to the support 10; hoist the second section of the side truss into position and weld it to the support 10; hoist the third section of the side truss into position and weld it to the support 10; hoist the vertical web members of the side truss; install the upper chord of the side truss; install the diagonal web members of the side truss.

[0035] The segmented upper and lower chords are smaller in size and weight, as are the web members. This allows for the use of small-tonnage cranes and other lifting equipment for high-altitude installation, resulting in lower construction costs and higher safety.

[0036] c. For example Figure 8 As shown, the lifting structure 3 is assembled into a whole on the ground directly below the installation position.

[0037] For the trusses on both sides of the lifting section, the upper and lower chords of the longer trusses are fabricated and assembled in sections. For the fan-shaped steel structure corridor, the truss on the front side of the lifting section is shorter than the truss on the rear side, so the upper and lower chords of the rear truss are fabricated in sections.

[0038] The assembly steps for the lifting section are as follows: Step 1: Assemble the lower chord segments of the rear truss sequentially; assemble the web members; assemble the upper chord segments; assemble the diagonal web members. Step 2: Assemble the lower chord of the front truss; assemble the web members; assemble the upper chord; assemble the diagonal web members. Step 3: Assemble the connecting beams for the lower chords of the trusses on both sides of the lifting section. Step 4: Assemble the connecting secondary beams for the lower chords of the trusses on both sides of the lifting section. Step 5: Assemble the connecting beams for the upper chords of the trusses on both sides of the lifting section.

[0039] d. Set up lifting points 6 on the pre-installed structures 2 on both sides, and install lifting equipment 8 on the lifting points 6.

[0040] e. Set a lower suspension point 7 on the lifting structure 3 at the position corresponding to the upper suspension point 6.

[0041] f. such as Figure 1 , Figure 9 As shown, the lifting device 8 is connected to the lower suspension point 7 via steel strand 9.

[0042] In the above steps, such as Figure 6 As shown, two lower lifting points 7 are set at each of the four corners of the lifting structure 3, and the same number of upper lifting points 6 are also set at the corresponding positions on the pre-assembled structure 2.

[0043] Both the upper suspension point 6 and the lower suspension point 7 are bracket structures. The bracket of the upper suspension point 6 is vertically welded and fixed to the upper chord of the pre-assembled structure 2, and the bracket of the lower suspension point 7 is vertically welded and fixed to the lower chord at the end of the lifting structure 3.

[0044] The lifting device 8 can be a hydraulic lifter, on which a steel strand 9 is threaded, and the lower end of the steel strand 9 is fixedly connected to the lower suspension point 7.

[0045] g. Perform a trial lift on lifting structure 3 to check whether the welds and deformation of the structure are normal.

[0046] In step g, the lifting structure 3 is loaded step by step by the lifting equipment 8 in the order of 20%, 40%, 60%, 70%, 80%, 90%, 95%, and 100% of the design load, until the lifting structure 3 is detached from the assembly platform 11; after the lifting structure 3 is 150-150mm away from the assembly platform 11, the lifting is paused; the elevation of each lifting point of the lifting unit is finely adjusted to make it level, and it is left to stand for 12 hours; the lifting structure 3 and the lifting equipment 8 are checked for any abnormalities; after confirming that there are no abnormalities, the formal lifting begins.

[0047] h. such as Figure 2 , Figure 10 As shown, the lifting structure 3 is raised to the design elevation, and fine-tuned by the lifting device 8 to ensure precise docking between the lifting structure 3 and the pre-installed structure 2.

[0048] i. After the lifting structure 3 is lifted into place, the lifting equipment 8 is locked. Under stable locked conditions, the lifting structure 3 and the pre-installed structure 2 are welded together, so that the weight of the lifting structure 3 is transferred to the main building structure 1.

[0049] j. such as Figure 3 , Figure 11 As shown, the post-installation supplementary structure 4 is installed, and the lifting structure 3 is further connected to the pre-installed structure 2 through the rods of the post-installation supplementary structure 4.

[0050] k. such as Figure 4 , Figure 12 As shown, after passing the acceptance inspection, the lifting equipment 8 was dismantled, and the lifting operation was completed.

[0051] To ensure safety during the lifting process, reinforcing rods 5 are added to the pre-assembled structure 2 and the lifting structure 3 respectively when assembling the pre-assembled structure 2 and the lifting structure 3. By increasing the structural strength of the ends of the pre-assembled structure 2 and the lifting structure 3, the reinforcing rods 5 are removed after the supplementary structure 4 is installed.

[0052] The present invention discloses a method for installing an aerial walkway with an irregularly shaped steel structure. The walkway is divided into a pre-assembled structure 2, a lifting structure 3, and a supplementary structure 4. The pre-assembled structure 2 is lightweight and can be installed at high altitude using small-tonnage hoisting equipment. After the pre-assembled structure 2 is installed, lifting points 6 are directly set on it, and hoisting devices are installed. The lifting structure 3 is then assembled on the ground and lifted to a predetermined height using the hoisting devices. The lifting structure 3 is then connected to the pre-assembled structure 2. After the supplementary structure 4 is completed, the installation of the aerial walkway with the irregularly shaped steel structure is finished. This method avoids the use of large hoisting equipment, reducing construction costs. Segmented hoisting reduces the weight, difficulty, and risk of each hoisting operation, and facilitates ensuring stability during the hoisting process and smooth connection with the main building.

[0053] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for installing an aerial walkway with an irregularly shaped steel structure at high altitude, characterized in that, Includes the following steps: a. The steel structure corridor is divided into pre-assembled structure, lifting structure and post-construction structure. The side truss parts at both ends of the steel structure corridor are pre-assembled structures, the middle part of the steel structure corridor is lifting structure, and the connecting rod between the side truss and the middle part is post-construction structure. b. Using hoisting equipment, assemble the prefabricated structure at the height of the connecting corridor, and install the prefabricated structure on the supports on both sides of the main building; fabricate the upper and lower chords of the prefabricated structure in sections, and after the side trusses are laid out, fabricated and welded as a whole in the factory, the upper and lower chords are then segmented, and the joint bevels are cut on the segmented surfaces of the upper and lower chords; assemble the segmented upper and lower chords and web members at high altitude; The assembly steps for the lifting section are as follows: Step 1: Assemble the lower chord, web members, upper chord, and diagonal web members of one side of the lifting section truss; Step 2: Assemble the lower chord, web members, upper chord, and diagonal web members of the truss on the other side of the lifting section; Step 3: Assemble the connecting beams of the lower chords of the trusses on both sides of the lifting section; Step 4: Assemble the connecting secondary beams of the lower chords of the trusses on both sides of the lifting section; Step 5: Assemble the connecting beams of the upper chords of the trusses on both sides of the lifting section; For the trusses on both sides of the lifting section, the upper and lower chords of the longer trusses are manufactured and assembled in sections. c. Assemble the lifting structure as a whole on the ground directly below the installation location; d. Set up lifting points on the pre-assembled structures on both sides, and install lifting equipment on the lifting points; e. Set a lower lifting point on the lifting structure at the position corresponding to the upper lifting point; f. The lifting equipment is connected to the lower suspension point via steel strands; g. Conduct a trial lift of the lifting structure to check whether the welds and deformation of the structure are normal; h. Raise the lifting structure to the design elevation and make fine adjustments using lifting equipment to ensure precise alignment between the lifting structure and the pre-installed structure; i. After the lifting structure is lifted into place, the lifting equipment is locked. Under stable locked conditions, the lifting structure and the pre-installed structure are welded together, so that the weight of the lifting structure is transferred to the main building structure. j. Post-installation structural repair; k. After acceptance, the lifting equipment is dismantled, and the lifting operation is completed; When assembling the prefabricated structure and the lifting structure, reinforcing rods are added to the prefabricated structure and the lifting structure respectively to increase the structural strength of the ends of the prefabricated structure and the lifting structure. The reinforcing rods are removed after the subsequent structure is installed.

2. The method for installing an aerial corridor with an irregularly shaped steel structure at high altitude according to claim 1, characterized in that, Both the upper and lower suspension points are corbel structures.

3. The method for installing an aerial corridor with an irregularly shaped steel structure at high altitude according to claim 1, characterized in that, Two lifting points are set at each of the four corners of the lifting structure.

4. The method for installing an aerial corridor with an irregularly shaped steel structure according to claim 1, characterized in that, The lifting device is a hydraulic lifter.

5. The method for installing an aerial corridor with an irregularly shaped steel structure at high altitude according to claim 1, characterized in that, In step g, the lifting structure is loaded step by step using the lifting equipment in the order of 20%, 40%, 60%, 70%, 80%, 90%, 95%, and 100% of the design load until the lifting structure detaches from the assembly platform. After the lifting structure detaches from the assembly platform by 50-150mm, the lifting is paused. The elevation of each lifting point of the lifting unit is finely adjusted to ensure it is level, and the unit is left to stand for 12 hours. The lifting structure and lifting equipment are then checked for any abnormalities. After confirming that there are no abnormalities, the formal upgrade will begin.

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