Building inter steel structure canopy and construction method thereof

Abstract

This invention discloses a steel structure canopy between buildings and its construction method, belonging to the field of steel structure construction technology. To solve the problems of complex structure and long construction period, the canopy includes pre-assembled sections on both sides for support and fixation, a lifting unit as the main structure, and a patching section for fitting the lifting unit. The construction method includes the installation of the pre-assembled sections, the installation of cantilever brackets (using a crane to hoist the cantilever brackets to the required position, with construction workers positioning and welding the cantilever brackets inside the hoisting cage), and the installation of the edge sealing beams of the pre-assembled sections (hoisting the edge sealing beams to the cantilever brackets, with construction workers welding on the inside of the edge sealing beams to complete the connection between the edge sealing beams and the cantilever brackets). This invention divides the entire steel structure canopy into functionally supported pre-assembled sections, lifting units as the main structure, and patching sections for fitting the lifting unit, enabling modular installation and simplifying the structure and construction process.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel structure construction, in particular to a steel structure canopy between buildings and a construction method thereof. BACKGROUND

[0002] The steel structure canopy is built between two buildings, and serves as a canopy for connecting the two buildings as a passageway, or is arranged above the entrance or top balcony of a building to block rain, wind and falling objects from high altitude, and plays a protective role. It is suitable for use in the outer periphery of streets, industrial areas, schools, communities, office buildings, shopping malls and stations.

[0003] For canopies such as stations, office buildings and industrial areas, the span is large, and the support point is located at the building, so the construction difficulty is large.

[0004] The traditional structure and the construction process matched therewith have high construction cost, complex structure and long construction period.

[0005] Therefore, the present application provides a steel structure canopy between buildings and a construction method thereof. SUMMARY

[0006] The present application aims to solve the problems in the prior art and provides a steel structure canopy between buildings and a construction method thereof.

[0007] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0008] A steel structure canopy between buildings comprises pre-assembled sections for supporting and fixing on both sides, lifting units as main structures, and embedded sections for embedding the lifting units, the pre-assembled sections comprise cantilever corbels and pre-assembled section edge beams, the lifting units comprise side edge beams and segmented box beams, and the embedded sections comprise small beams A for connecting the pre-assembled section edge beams and the lifting units, small beams B for connecting the side edge beams and the segmented box beams, and small beams C for connecting adjacent segmented box beams.

[0009] Preferably, the surfaces of the components in the steel structure canopy between buildings are coated with a corrosion-resistant layer, and before coating, burrs, rust, oxide scales, oil stains and attachments on the surfaces of the components are thoroughly cleaned, sandblasting or shot blasting methods are used to thoroughly remove rust, and after rust removal, the surfaces of the components are inspected and qualified before coating.

[0010] Further, the rust removal before coating the corrosion-resistant layer should reach Sa2.5 level.

[0011] A construction method of a steel structure canopy between buildings comprises the following steps:

[0012] S1: installation of pre-assembled sections;

[0013] S11: installation of the cantilever bracket, the cantilever bracket is hoisted to the required position by a crane, and a construction worker performs positioning and welding of the cantilever bracket in a cage;

[0014] S12: installation of the pre-assembly section edge beam, the edge beam is hoisted to the cantilever bracket, and a construction worker performs welding work on the inner side of the edge beam to complete the connection of the edge beam and the cantilever bracket;

[0015] S2: assembly of the lifting unit;

[0016] S21: erection of the lifting area assembly jig frame and positioning and fixing according to the axial position relationship to prevent displacement of the jig frame;

[0017] S22: assembly of the lifting unit side edge beam adjacent to one side of the cantilever bracket, which is divided into two sections along the length direction and is assembled and welded in sequence;

[0018] S23: assembly of the segmented box girder adjacent to the side edge beam, after the assembly is completed, the segmented box girder is spliced with the side edge beam and is connected and fixed by using the small beam B of the embedded section;

[0019] S24: continuous splicing of the segmented box girder to the other side, and during the splicing process, the adjacent segmented box girders are connected and fixed by using the small beam C of the embedded section, until all the segmented box girders are spliced;

[0020] S25: splicing of the side edge beam on the other side and fixing the same to the segmented box girder by using the small beam A of the embedded section;

[0021] S3: hoisting and fixing of the lifting unit, the lifting unit assembled in the step S2 is hoisted as a whole, after being hoisted in place, the two ends of the lifting unit are fixed to the pre-assembly section edge beam by using the embedded section;

[0022] S4: removal of the splicing rack and other auxiliary supports.

[0023] In the foregoing scheme, a better scheme is that the pre-assembly section edge beam adopts a segmented structure.

[0024] As a further scheme of the present application, when the pre-assembly section edge beam is installed, the pre-assembly section edge beam located at the cantilever bracket is hoisted and installed first, and then is fixed to the cantilever bracket, after the pre-assembly section edge beam with the support of the cantilever bracket is completely installed, the edge beam at the middle part is installed.

[0025] Meanwhile, in the S1 step, when the cantilever bracket and the pre-assembly section edge beam are installed, double-row safety ropes need to be arranged on the cantilever fixed support pad, and the lower part is lifted to the working position by the climbing vehicle, and the construction workers operate on the climbing vehicle, and the construction workers stand on the inner side of the cantilever bracket to install the pre-assembly section edge beam, and a safety vertical pole is arranged in the inner side area of the inner side of the pre-assembly section edge beam, which is used for safety protection; after the pre-assembly section edge beam is hoisted and positioned, a vertical column is welded on the cantilever bracket to reinforce the pre-assembly section edge beam, and after the reinforcement is completed, the pre-assembly section edge beam and the fixed support are welded.

[0026] As a preferred embodiment of the present application: in the S21 step, the specific steps of assembling the jig frame are:

[0027] S211a: When the jig frame is set, the X and Y projection lines, the elevation line, the test line and the fulcrum position are first laid out according to the measured control points, a control network is formed, and the acceptance is submitted;

[0028] S212a: Then the jig frame straight rod is erected, and the jig frame template and the inclined brace are set according to the elevation at the fulcrum. The jig frame design should be optimized in all directions according to the shape size, segmented weight and height of the corresponding assembly unit, and the jig frame is placed on the steel platform;

[0029] S213a: After positioning, the steel plate of the lower steel platform is welded and fixed with a clamping plate to prevent the jig frame from shifting;

[0030] S214a: After the roof backfilling, the jig frame is fixed by installing expansion screws in cooperation with the clamping plate;

[0031] S215a: After the main beam splicing is completed, the two ends are raised by a steel pad, a reinforcing vertical rod is arranged above the jig frame and connected with the main beam for reinforcement.

[0032] Meanwhile, in the S21 step, the following steps are also included:

[0033] S211b: Measurement before assembly: after the assembly jig frame is set, the total length, width and height of the jig frame are measured and corrected in all directions before assembly, then a control grid is established for the rain shelter rod piece placement position, and the space position of each point is measured and laid out, and the limiting block for the rod piece placement is set;

[0034] S212b: Measurement during assembly: each chord and the inter-chord web is measured and positioned during assembly;

[0035] S214b: Measurement of the rain shelter beam after assembly: the rain shelter beam after assembly needs to be detected and corrected in all directions by a total station to ensure that it is consistent with the design state;

[0036] S215b: Measurement of the jig after assembly: After the jig is assembled once, its dimensions must be fully inspected and verified before the next assembly can proceed.

[0037] As a preferred embodiment of the present invention, step S3 specifically includes the following steps:

[0038] S31: Install the lower lifting device, lower lifting device reinforcing rods, and lifting bracket at the assembled lifting unit;

[0039] S32: Install hydraulic lifting equipment and facilities; install hydraulic lifters, hydraulic pump sources, steel strands, and special ground anchors for lifting at the designed location, connect hydraulic oil pipes, and lay communication signal lines;

[0040] S33: Overall debugging of hydraulic lifter, hydraulic pump source, and synchronous control system; after confirming that there are no errors, load the structure in sequence at 20%, 40%, 60%, 80%, and 100% until the structure is 5-10cm off the ground;

[0041] S34: Formal lifting operation, during which the lifting height of each lifting point is measured every 5m, the lifting points are fine-tuned, and the lifting channel is kept clear during the lifting process;

[0042] S35: During normal lifting operations, when the lifting unit is about to reach the preset point, each lifting point is finely adjusted to slow down the lifting speed;

[0043] S36: Slowly lift to the structural design position, lock the hydraulic lifter, and re-measure the lifting height of each lifting point to ensure that the design requirements are met;

[0044] S37: After the lifting unit is fixed to the pre-installed edge-sealing beams on both sides, the hydraulic lifter will unload in stages;

[0045] S38: Remove the hydraulic lifter, hydraulic pump source, steel strand, and lifting-specific ground anchor; connect hydraulic oil pipes; lay communication signal lines; lower the lifting tool; lower the lifting tool reinforcement rods and lifting support.

[0046] The beneficial effects of this invention are as follows:

[0047] 1. This invention divides the entire steel structure canopy into pre-assembled sections for support, lifting units for the main structure, and patching sections for patching the lifting units, enabling modular installation and simplifying the structure and construction process.

[0048] 2. This invention uses ground assembly and overall hoisting to construct the lifting units of the main structure of the canopy, which can reduce the amount of high-altitude work, improve construction efficiency, make quality control easier, and shorten the installation cycle; in addition, the absolute time of hydraulic overall lifting operation is relatively short, further shortening the cycle. Attached Figure Description

[0049] The accompanying drawings, which form a part of this application, are included to provide a further understanding of the application and are incorporated in and constitute a part of this application. The illustrations, together with their description, serve to explain the application. In the drawings:

[0050] Figure 1 A flowchart of a construction method of a building-to-building steel structure canopy according to the present application. DETAILED DESCRIPTION

[0051] In order to make the personnel in the technical field better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor should belong to the scope of protection of the present application.

[0052] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0053] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0054] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0055] In addition, the meaning of the term "a plurality of" should be two and more than two.

[0056] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0057] Embodiment 1

[0058] A steel structure canopy between buildings, as shown in Figure 1 , comprises pre-assembled sections for supporting and fixing on both sides, lifting units as main body structures, and patching sections for patching the lifting units, the pre-assembled sections comprise cantilever corbels and pre-assembled section edge beams, the lifting units comprise side edge beams and sectional box beams, and the patching sections comprise small beams A for connecting the pre-assembled section edge beams and the lifting units, small beams B for connecting the side edge beams and the sectional box beams, and small beams C for connecting adjacent sectional box beams.

[0059] The surfaces of the components in the steel structure canopy between buildings are coated with a corrosion protection layer. Before coating, burrs, rust, oxide scales, oil stains and attachments on the surfaces of the components are thoroughly cleaned, sand blasting or shot blasting method is used to thoroughly remove rust to reach Sa2.5 level, and the surfaces of the components after rust removal are inspected and qualified before coating.

[0060] In this embodiment, the entire steel structure canopy is divided into pre-assembled sections as supports, lifting units as main body structures, and patching sections for patching the lifting units according to functions, which can realize modular installation and simplify the structure and construction process.

[0061] Embodiment 2

[0062] A construction method of a steel structure canopy between buildings, as shown in Figure 1 , comprises the following steps:

[0063] S1: installation of the pre-assembled section;

[0064] S11: installation of the cantilever corbel, the cantilever corbel is hoisted to the required position by a crane, and positioning and welding of the cantilever corbel are performed by the construction personnel in the cage;

[0065] S12: installation of the pre-assembled section edge beam, the edge beam is hoisted to the cantilever corbel, and the construction personnel perform welding work on the inner side of the edge beam to complete the connection of the edge beam and the cantilever corbel;

[0066] S2: assembly of the lifting unit;

[0067] S21: erection of the lifting area assembly jig and positioning and fixing according to the axial position relationship to prevent displacement of the jig;

[0068] S22: Assemble the lifting unit side sealing edge beam on one side of the cantilever bracket, which is divided into two sections along the length direction, and is assembled and welded in turn;

[0069] S23: Assemble the segmented box girder adjacent to the side sealing edge beam, after the assembly is completed, splice the segmented box girder with the side sealing edge beam, and connect and fix it by using the small beam B of the embedded section;

[0070] S24: Continue to splice the segmented box girder to the other side, and during the splicing process, use the small beam C of the embedded section to connect and fix the adjacent segmented box girder, until all the segmented box girders are spliced;

[0071] S25: Assemble the side sealing edge beam on the other side, and fix it to the segmented box girder by using the small beam A of the embedded section;

[0072] S3: Hoisting and fixing of the lifting unit, the lifting unit assembled in step S2 is lifted as a whole, after lifting in place, the two ends of the lifting unit are fixed to the pre-assembly section sealing edge beam by using the embedded section;

[0073] S4: Remove the splicing rack and other auxiliary supports.

[0074] The pre-assembly section sealing edge beam adopts a segmented structure.

[0075] When installing the pre-assembly section sealing edge beam, first hoist and install the pre-assembly section sealing edge beam at the cantilever bracket, then fix it to the cantilever bracket, after all the pre-assembly section sealing edge beams with cantilever bracket support are installed, install the sealing edge beam in the middle part.

[0076] In step S1, when installing the cantilever bracket and the pre-assembly section sealing edge beam, double-row safety ropes need to be arranged on the cantilever fixed support pad, the lower part is lifted to the working position by the aerial platform truck, and the construction workers operate the construction on the aerial platform truck, the construction workers stand inside the cantilever bracket to install the pre-assembly section sealing edge beam, safety vertical poles are arranged inside the inside area of the pre-assembly section sealing edge beam for safety protection; after the pre-assembly section sealing edge beam is hoisted and positioned, vertical columns are welded on the cantilever bracket to reinforce the pre-assembly section sealing edge beam, after the reinforcement is completed, the pre-assembly section sealing edge beam is welded to the fixed support,

[0077] In step S1, the type of vertical column and the weld joint are not limited in this embodiment, preferably: the vertical column is selected to be a channel steel, and the weld joint is in the form of an angle weld joint.

[0078] In step S21, the specific steps for assembling the jig are as follows:

[0079] S211a: When setting up the jig, first measure the control points, draw the projection lines of X and Y, draw the elevation lines, test lines and fulcrum positions, form a control network, and submit it for acceptance;

[0080] S212a: Then the straight rod of the vertical jig is erected, and the jig template and inclined brace are set according to the elevation at the fulcrum. The jig is placed on the steel platform, and the jig design should be comprehensively optimized and selected in combination with the shape size, segmented weight and height of the corresponding assembly unit;

[0081] S213a: After positioning, the steel plate of the lower steel platform is welded with the clamping plate to prevent the jig from shifting;

[0082] S214a: After backfilling the top plate, the jig is fixed by installing the expansion screw in cooperation with the clamping plate;

[0083] S215a: After the main beam splicing is completed, the two ends are raised by the profile steel pad, the reinforcing vertical rod is arranged above the jig and connected with the main beam for reinforcement. In the embodiment, the type and size of the reinforcing vertical rod are not limited, and preferably, the reinforcing vertical rod is HM1500*100*6*9.

[0084] In the S21 step, the following steps are further included:

[0085] S211b: Measurement before assembly: After the assembly of the jig is completed, the total length, width and height of the jig are measured and corrected comprehensively before assembly, then the control grid of the rain shelter rod piece placement position is established, and the spatial position of each point is measured and laid out, and the limiting block of the rod piece placement is set;

[0086] S212b: Measurement during assembly: Each chord and the web between the chords is measured and positioned one by one during assembly;

[0087] S214b: Measurement of the rain shelter beam after assembly: the rain shelter beam after assembly needs to be detected and corrected comprehensively by the total station to ensure that it is consistent with the design state;

[0088] S215b: Measurement of the jig after assembly: after the jig is assembled once, its size must be detected and reviewed comprehensively, and the review requirement must be met before the next assembly.

[0089] In the S3 step, the following steps are specifically included:

[0090] S31: Installing the lower lifting tool, the lower lifting tool reinforcing rod piece and the lifting support at the assembled lifting unit;

[0091] S32: Installing the hydraulic lifting equipment; installing the hydraulic lifter, the hydraulic pump source, the steel strand, the special anchor for lifting at the designed position, connecting the hydraulic oil pipe and laying the communication signal line;

[0092] S33: The hydraulic hoist, hydraulic pump source and synchronous control system are debugged as a whole; after confirming that there is no error, 20%, 40%, 60%, 80% and 100% are loaded to the structure to make the structure off the ground by 5-10 cm in sequence;

[0093] S34: Official lifting operation is performed, during which the lifting height of each lifting point is measured every 5 m, fine adjustment of the lifting point is performed, and the smoothness of the lifting passage is ensured during the lifting process;

[0094] S35: Normal lifting operation is performed, when the lifting unit is about to reach the preset point, fine adjustment of each lifting point is performed, and the lifting speed is slowed down;

[0095] S36: Slowly lift to the structure design position, lock the hydraulic hoist, re-measure the lifting height of each lifting point, and ensure that the design requirements are met;

[0096] S37: After the lifting unit and the pre-installed edge beam on both sides are fixed, the hydraulic hoist is unloaded in stages;

[0097] S38: Remove the hydraulic hoist, hydraulic pump source, steel strand and lifting special ground anchor, connect the hydraulic oil pipe and lay the communication signal line, lower the lifting tool, reinforce the lifting tool rod and the lifting support.

[0098] In the embodiment, first, based on the division of the structure, the installation of the pre-installed section and the assembly of the lifting unit can be performed simultaneously, thereby shortening the construction period and increasing the construction efficiency; in addition, for the entire lifting unit, the ground assembly and then the whole lifting are performed, which can ensure that most of the construction time is located on the ground operation, the construction efficiency is high, and the construction quality is easy to guarantee.

[0099] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A construction method of a building steel structure canopy, the building steel structure canopy comprising pre-assembled sections for supporting and fixing at both sides, a lifting unit as a main structure, and a patching section for patching the lifting unit, characterized in that, The pre-assembled segment comprises a cantilever bracket and a pre-assembled segment edge beam, the lifting unit comprises a side edge beam and a segmented box girder, and the patching segment comprises a small beam A for connecting the pre-assembled segment edge beam and the lifting unit, a small beam B for connecting the side edge beam and the segmented box girder, and a small beam C for connecting adjacent segmented box girders, and the construction method comprises the following steps: S1: installation of the pre-assembled segment; S11: installation of the cantilever bracket, the cantilever bracket is hoisted to the required position by a crane, and workers in the cage position and weld the cantilever bracket; S12: installation of the pre-assembled segment edge beam, the edge beam is hoisted to the cantilever bracket, and the workers weld on the inside of the edge beam to complete the connection of the edge beam and the cantilever bracket; S2: assembly of the lifting unit; S21: erecting the assembly bed of the lifting area and positioning and fixing according to the axial position relationship to prevent displacement of the bed; S22: assembling the lifting unit side edge beam adjacent to one side of the cantilever bracket, which is divided into two sections along the length direction, and is assembled and welded in sequence; S23: splicing the segmented box girder adjacent to the side edge beam, after splicing, the segmented box girder is spliced with the side edge beam and connected and fixed by the small beam B of the patching segment; S24: continuing to splice the segmented box girder on the other side, and in the splicing process, the adjacent segmented box girders are connected and fixed by the small beam C of the patching segment, until all the segmented box girders are spliced; S25: splicing the side edge beam on the other side and fixing it to the segmented box girder by the small beam A of the patching segment; S3: hoisting and fixing of the lifting unit, the lifting unit assembled in step S2 is hoisted as a whole, after hoisting in place, the two ends of the lifting unit are fixed to the pre-assembled segment edge beam by the patching segment; S4: the assembly bed and other auxiliary supports can be removed.

2. The construction method of a building-to-building steel structure canopy according to claim 1, characterized in that, The pre-assembled segment edge beam adopts a segmented structure.

3. The construction method of a building-to-building steel structure canopy according to claim 2, characterized in that, The pre-assembled segment edge beam is hoisted and installed first at the cantilever bracket, then fixed with the cantilever bracket, and after the pre-assembled segment edge beam with the cantilever bracket support is completely installed, the edge beam in the middle part is installed.

4. The construction method of a building-to-building steel structure canopy according to claim 1, wherein In step S1, when the cantilever bracket and the pre-assembled segment edge beam are installed, double rows of safety ropes are arranged on the cantilever fixed support pad, the lower part is lifted to the working position by the elevated vehicle, the workers operate construction on the elevated vehicle, the workers stand on the inside of the cantilever bracket to install the pre-assembled segment edge beam, safety vertical poles are arranged in the inside area of the inside of the pre-assembled segment edge beam for safety protection; after the pre-assembled segment edge beam is hoisted in place, vertical columns are welded on the cantilever bracket to reinforce the pre-assembled segment edge beam, and after reinforcement, the pre-assembled segment edge beam is welded with the fixed support.

5. The construction method of a building-to-building steel structure canopy according to claim 1, wherein In step S21, the specific steps of assembling the bed are as follows: S211a: when the bed is set, the X and Y projection lines, the elevation line, the test line and the fulcrum position are first set according to the measured control points to form a control network, and the control network is submitted for acceptance; S212a: then, the vertical bed straight rod is set, and the bed template and inclined braces are set according to the elevation at the fulcrum; The tire rack design should be optimized in all aspects in combination with the shape size, segmented weight and height of the corresponding assembling unit, and the tire rack is placed on the steel platform; S213a: After positioning, the steel plate of the lower steel platform is welded with the clamping plate to prevent the tire rack from moving; S214a: After the top plate is backfilled, the tire rack is fixed by installing expansion screws and clamping plates; S215a: After the main beam splicing is completed, the two ends are raised by the steel pad, the reinforcing vertical rod above the tire rack is connected with the main beam for reinforcement.

6. The construction method of a building-to-building steel structure canopy according to claim 5, wherein The S21 step further includes the following steps: S211b: Measurement before assembly: After the assembly of the tire rack is completed, the overall length, width and height of the tire rack are measured and corrected before assembly, then a control grid is established for the placement position of the canopy bar, and the spatial position of each point is measured and laid out, and the limiting block for placing the bar is set; S212b: Measurement during assembly: Each chord and the web between the chords is measured and positioned during assembly; S214b: Measurement of the canopy beam after assembly: the canopy beam after assembly needs to be detected and corrected by a total station to ensure that it conforms to the design state; S215b: Measurement of the tire rack after assembly: after the tire rack is assembled once, its size must be detected and reviewed in all aspects, and the next assembly can be carried out only after the review.

7. The construction method of a building-to-building steel structure canopy according to claim 1, wherein The S3 step specifically includes the following steps: S31: Install the lower hanger, the lower hanger reinforcing bar and the lifting support at the completed lifting unit; S32: Install the hydraulic lifting equipment; install the hydraulic hoist, hydraulic pump source, steel strand, special anchor for lifting at the designed position, connect the hydraulic oil pipe and lay the communication signal line; S33: Debug the hydraulic hoist, hydraulic pump source and synchronous control system as a whole; after confirming that there is no error, load 20%, 40%, 60%, 80% and 100% to the structure 5-10 cm off the ground in sequence; S34: Formal lifting operation, during which the lifting height of each lifting point is measured every 5m, the lifting point is fine-tuned, and the smoothness of the lifting channel is ensured during the lifting process; S35: Normal lifting operation, when the lifting unit is about to reach the preset point, fine-tune each lifting point and slow down the lifting speed; S36: Slowly lift to the structure design position, lock the hydraulic hoist, re-measure the lifting height of each lifting point to ensure that the design requirements are met; S37: After the lifting unit is fixed with the pre-installed edge beam on both sides, the hydraulic hoist is unloaded in stages; S38: Remove the hydraulic hoist, hydraulic pump source, steel strand, special anchor for lifting, connect the hydraulic oil pipe and lay the communication signal line, and remove the lower hanger, lower hanger reinforcing bar and lifting support.

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