Method for integrating installation of prefabricated combined riser of super high-rise core tube and plugging of tube well

Abstract

The invention relates to a super high-rise core tube prefabricated combined vertical tube installation and tube well plugging integrated method. The method comprises the following steps that the tube well distribution range of prefabricated combined vertical tube construction is determined in the design stage, a tube well hole is adjusted to be a reserved hole from a post-pouring hole, and reserved steel bars, later-period steel bar planting and hole hole steel bar binding are omitted; the sections of the prefabricated combined vertical pipe are designed to be consistent with the sections of the core tube stiff steel reinforced column, and a pipeline support and a fixing mode are determined; according to the designed prefabricated combined vertical pipe, the designed pipeline support and the designed fixing mode, the prefabricated combined vertical pipe and a pipeline frame sealing plate arranged on the prefabricated combined vertical pipe are machined, and the edge of the pipeline frame sealing plate and a foldable turning plate are connected into a whole through a hinge piece; then, after overall hoisting, correcting and fixing are conducted, the turning plate is opened and abuts against a concrete structure on the side face of the pipeline hole, and the pipeline frame sealing plate and the turning plate form an integrated hole plugging formwork; during floor terrace construction, plain concrete is directly adopted for hole plugging.

Description

Technical Field

[0001] The invention relates to the field of building technology, and more particularly to an integrated method for installing a prefabricated combined riser of a super-high-rise core tube and plugging a pipe well. Background Art

[0002] In modern high-rise buildings, the design and installation of the piping system is a crucial part of the construction process. Traditional building pipeline installation methods have many problems, including difficult safety assurance, poor quality reliability, low construction efficiency, and large installation deviations. These problems not only affect the construction progress and project quality, but also increase construction costs and safety hazards. In order to solve the problems caused by these traditional methods, prefabricated composite riser construction technology came into being. This technology was successfully applied for the first time in the Shanghai World Financial Center project and quickly popularized nationwide. Prefabricated composite risers are mainly used for the installation of large-size air-conditioning water pipes. Through factory prefabrication and on-site assembly, the construction efficiency and quality are significantly improved. However, in the actual construction process, the pipe well plugging stage after the installation of prefabricated composite risers still faces a series of challenges.

[0003] Due to the small space of the core tube shaft and the fact that the shaft opening is usually a post-cast opening, problems such as difficulty in planting reinforcement, chaotic steel bar tying, and loose concrete pouring are common. These problems not only increase the complexity of the shaft plugging process and the construction period, but also increase the safety hazards during the construction process and reduce the quality standards and fire resistance of the shaft plugging.

[0004] Therefore, how to provide a method for solving the above-mentioned problems on the basis of continuing to use the prefabricated composite riser construction technology is an issue that technical personnel in this field urgently need to solve. Summary of the invention

[0005] To this end, the purpose of the present invention is to propose an integrated method based on the prefabricated composite riser construction technology to solve the problems of difficulty in planting reinforcement, chaotic reinforcement binding and loose concrete pouring due to the narrow space of the core tube well and the post-cast well opening type.

[0006] The technical solution of the present invention is an integrated method for installing a prefabricated combined riser of a super high-rise core tube and plugging a pipe well, comprising the following steps:

[0007] S1. Determine the distribution range of the pipe wells for the construction of prefabricated composite risers during the design phase, adjust the pipe well openings from post-cast openings to reserved openings, and cancel reserved steel bars, later steel bar planting, and steel bar binding at the openings;

[0008] S2. Design the sections of prefabricated composite risers to be consistent with the sections of the core tube rigid steel columns, and determine the pipe supports and fixing methods;

[0009] S3. According to the prefabricated composite riser, pipe bracket and fixing method designed in S2, the prefabricated composite riser and the pipe frame cover plate on the prefabricated composite riser are processed, and the edges of the pipe frame cover plate are connected to the foldable flap through hinges to form a whole; then after hoisting, calibrating and fixing the whole, the flap is opened and pressed against the concrete structure on the side of the pipe opening, so that the pipe frame cover plate and the flap form an integrated opening plugging template;

[0010] S4. During floor construction, use plain concrete directly to seal the openings.

[0011] According to the method of the present invention, in S2, the sections of the prefabricated composite riser are designed according to the sections of the rigid steel frame columns of the core tube, the length and width of the unit sections are determined, and the prefabricated composite riser is processed according to the length and width of the unit sections.

[0012] According to the method of the present invention, in S3, before lifting, the opening sites on each floor are cleaned, roughened, checked for size and handed over: within the length range of the prefabricated combined riser unit section and above floors, the main structure wall formwork and beam side formwork around the pipe shaft opening are dismantled first to ensure that the site around the opening is flat and free of obstacles.

[0013] According to the method of the present invention, after the cleaning in S3 is completed and before the on-site installation, channel steel legs are installed on the floor and corresponding height on one side of the structural wall of the pipe opening, a temporary stacking site is applied on-site, and a trial hoisting inspection of the prefabricated composite riser is carried out. Then, the prefabricated composite riser is formally hoisted, and the prefabricated composite riser is vertically hoisted until it is free from the ground or the transport vehicle, and then hoisted to the vertical pipe opening above the civil engineering working surface, and the prefabricated composite riser is aligned with the vertical pipe opening and slowly lowered to the channel steel legs; after the prefabricated composite riser is placed in place, the vertical pipe opening protection of the main structure construction layer is immediately restored.

[0014] According to the method of the present invention, if the docking interface is not aligned, fine-tuning work needs to be carried out on the lower layer, using a fall chain to fine-tune the verticality, horizontal position, and docking interface, and using a laser plumb line meter to check the positioning points. After qualified adjustments, the support points are fixed.

[0015] According to the method of the present invention, the prefabricated composite riser described in each section of S2 comprises:

[0016] Multiple prefabricated risers, all made of seamless steel pipes;

[0017] A channel steel frame supports a plurality of vertically arranged prefabricated risers, on which steel plate lifting ears are arranged, and a hanging rod is arranged on the outer wall of the prefabricated risers corresponding to the lower part of the channel steel frame, and the bottom of the channel steel frame is seated on the channel steel legs;

[0018] The steel frame cover plate is located below the channel steel frame and fixed to the prefabricated riser. A flap is hinged on its edge through a hinge. During the hoisting process, the angle between the flap and the steel frame cover plate is less than 90°. After hoisting and fixing, the flap is opened and pressed against the concrete structure on the side of the pipe opening.

[0019] According to the method of the present invention, the prefabricated composite riser also includes a pad located on the top of the channel steel frame, and a plurality of load-bearing attachment plates located on the outer wall of each of the prefabricated risers, wherein the pad is located between the channel steel frame and the load-bearing attachment plates.

[0020] According to the method of the present invention, the prefabricated composite riser also includes a wall-mounted bracket located below the steel frame cover plate.

[0021] According to the method of the present invention, a casing is arranged outside each of the prefabricated risers.

[0022] It can be seen from the above technical solution that compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention adjusts the type of the core tube shaft opening, changing it from a post-cast opening to a reserved opening, and adopts a flip plate that is integrated with the pipeline frame sealing plate to form an overall opening sealing template. Through this improvement, plain concrete can be directly poured to seal the opening, avoiding the occurrence of construction difficulties such as planting reinforcement, steel bar tying and hanging hole formwork in the narrow shaft at a later stage.

[0024] The present invention seamlessly connects the entire process from design to construction, reduces intermediate links, and improves overall efficiency. Most components are prefabricated in the factory to ensure processing accuracy and quality consistency. The originally scattered operations are concentrated in the factory, and only simple assembly and debugging are required on site, which greatly shortens the construction period. Factory production reduces material waste and improves resource utilization. It simplifies the on-site operation process and speeds up the construction progress. The entire construction process is safer and more reliable, reduces the impact on the environment, and conforms to the concept of green buildings.

[0025] The method of the present invention effectively solves many problems existing in the installation of traditional building pipelines, improves construction quality and efficiency, reduces construction costs, and achieves the goals of safety, high efficiency, environmental protection, and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0027] Figure 1 A front view of the prefabricated composite riser used in the method of the present invention;

[0028] Figure 2 A side view of a prefabricated composite riser used in the method of the present invention;

[0029] Figure 3 A top view of the prefabricated composite riser used in the method of the present invention;

[0030] Figure 4 A schematic diagram of a plurality of prefabricated composite riser units is illustrated;

[0031] Figure 5 The schematic diagram shows the hoisting of a section of prefabricated composite riser. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0033] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] Since the core tube shaft is small and the shaft opening is usually post-cast, it is difficult to plant reinforcement, the steel bar binding is chaotic, and the concrete pouring is not tight. This increases the complexity of the shaft plugging process and the construction period, increases the safety hazards during the construction process, and reduces the quality standard and fire resistance of the shaft plugging.

[0035] In view of this, the technical solution of the present invention is an integrated method for installing a prefabricated combined riser of a super high-rise core tube and plugging a pipe well, comprising the following steps:

[0036] S1. Determine the distribution range of the pipe wells for the construction of prefabricated composite risers during the design phase, adjust the pipe well openings from post-cast openings to reserved openings, and cancel reserved steel bars, later steel bar planting, and steel bar binding at the openings;

[0037] Specifically, the scope of the prefabricated riser construction well is determined by fully considering that the prefabricated composite riser should avoid the steel beams of the construction frame, the pre-embedded plates attached to the tower crane wall, the construction formwork frame, etc. For example, the implementation scope of the prefabricated composite riser is the well of the core tube air-conditioning room, and the clearance between the pipe frame and the side wall of the well structure opening is only 30-50mm. Therefore, in the drawing design stage, the opening type is adjusted from the post-cast opening to the reserved opening, and the floor slab reinforcement in the opening area is cancelled.

[0038] S2. Design the sections of prefabricated composite risers to be consistent with the sections of the core tube rigid steel columns, and determine the pipe supports and fixing methods;

[0039] For example, the pipe type of the prefabricated composite riser is a welded air-conditioning riser with DN>100mm in the core tube air-conditioning room. The riser section is consistent with the section of the core tube rigid steel column, and every two floors can be a unit section with a length of 9m and a maximum width of 2.5m. Due to the narrow space of the core tube pipe well opening, the tower crane hook cannot directly pass through the opening and fall into the work area. The installation layer of the prefabricated composite riser is two floors later than the main structure construction layer. According to the floor height from the structural construction layer to the riser installation layer, a 12m extended sling is required below the lifting point. The odd-numbered floors of the core tube air-conditioning room are openings, and the even-numbered floors are structural floors. Each unit section is designed with a floor bracket at the even-numbered floor slab, which is welded to multiple load-bearing attachments through pipes. The load-bearing attachments are then welded to the pads connected to the pipe frame to form a stable unit section, and the prefabricated composite riser is hoisted and fixed as a whole.

[0040] During the design phase, REVIT architectural drawing software can be used to draw detailed processing and manufacturing drawings of each combined riser component and arrange the risers reasonably. The design of prefabricated combined risers must fully consider the impact of construction loads, structural errors, and process interleaving. The design and calculation of the riser module components include all construction load combinations, the strength and deformation calculation of the pipe support of the riser module, and the force calculation of the riser module on the structure.

[0041] S3. According to the prefabricated composite riser, pipe bracket and fixing method designed in S2, the prefabricated composite riser and the pipe frame cover plate on the prefabricated composite riser are processed, and the edges of the pipe frame cover plate are connected to the foldable flap through hinges to form a whole; then after hoisting, calibrating and fixing the whole, the flap is opened and pressed against the concrete structure on the side of the pipe opening, so that the pipe frame cover plate and the flap form an integrated opening plugging template;

[0042] S4. During floor construction, use plain concrete directly to seal the openings.

[0043] Through the above technical scheme, the present invention changes the core tube shaft opening into a reserved opening, and adopts a foldable flap integrated with the pipeline frame cover to form an overall opening sealing template. Through this improvement, plain concrete can be directly poured to seal the opening, avoiding the occurrence of construction difficulties such as planting reinforcement, steel bar tying and hanging hole formwork in the narrow pipe shaft in the later stage.

[0044] In the technical solution of the present invention, in S2, the sections of the prefabricated composite riser are designed according to the sections of the core tube rigid steel frame columns, the length and width of each unit section of the prefabricated composite riser are determined, and the prefabricated composite riser is processed according to the length and width of the unit section.

[0045] In the embodiments of the present invention, see the attached Figure 1-4 , the prefabricated composite riser described in each section of S2 may include:

[0046] Multiple prefabricated risers 10 are all made of seamless steel pipes. Different prefabricated risers 10 may have steel pipes of different diameters to meet different needs;

[0047] The channel steel frame 20 supports a plurality of vertically arranged prefabricated risers 10, on which a steel plate lifting lug 21 is arranged. A suspension rod 11 is arranged on the outer wall of the prefabricated riser 10 corresponding to the lower part of the channel steel frame 20, and the bottom of the channel steel frame 20 is seated on the channel steel legs 70; the arrangement of the lifting lug 21 and the suspension rod 11 facilitates the lifting of a single section of the prefabricated combined riser, see the attached Figure 5 ;

[0048] The steel frame cover plate 30 is located below the channel steel frame 20 and is fixed to the prefabricated riser 10. A flap 40 is hinged to its edge through a hinge. During the hoisting process, the angle between the flap 40 and the steel frame cover plate 30 is less than 90°. After hoisting and fixing, the flap 40 is opened and pressed against the concrete structure 80 on the side of the pipe opening. The hinged member may be a steel hinge. The flap 40 forms a foldable structure corresponding to the edge around the steel frame cover plate 30. It can be understood that during the downward hoisting process, the flap 40 is folded and opened after it is in place. After opening, the flap 40 and the steel frame cover plate 30 form an integral hole plugging template. Therefore, it is sufficient to directly cast plain concrete to plug the hole. The above structure effectively avoids the construction difficulties such as planting reinforcement, steel bar tying and hanging hole formwork in the narrow pipe well in the later stage.

[0049] The flap 40 may include a corner folding flap 42, a long side folding flap 43 and a short side folding flap 44, see the attached Figure 3 , to accommodate the connection of the edges around the steel frame cover plate 30.

[0050] In an embodiment where the pipe type of the prefabricated composite riser is a welded air-conditioning riser with DN>100mm in a core tube air-conditioning room, the steel frame sealing plate 30 can be made of a 3mm thick steel plate, and is connected to the foldable flap at the edge of the steel frame sealing plate 30 through a steel hinge page 41 to form an integrated design for sealing the opening template, and the folding flap is made of the same material and thickness as the sealing plate.

[0051] Advantageously, see Appendix Figure 1 The prefabricated composite riser also includes a pad 22 located at the top of the channel steel frame 20, and a plurality of load-bearing attachment plates 50 located on the outer wall of each prefabricated riser 10, wherein the pad 22 is located between the channel steel frame 20 and the load-bearing attachment plates 50. The pad 22 is an anti-corrosion pad.

[0052] The prefabricated riser 10 transfers the gravity to the load-bearing attachment plate 50 , the load-bearing attachment plate 50 is connected to the pad 22 and transfers the force, the pad 22 is connected to the channel steel frame 20 , and finally the force is transferred to the channel steel frame 20 .

[0053] The load-bearing attachment plate 50 has connecting plates at the bottom and sides. The connecting plate at the bottom is located on the pad 22 and is fixed to the channel steel frame 20 through the connecting plate and bolts.

[0054] More advantageously, the prefabricated composite riser further comprises a wall-mounted bracket 60 located below the steel frame cover plate 30 .

[0055] In the embodiment of the present invention, a casing 12 is disposed outside each of the prefabricated risers 10 .

[0056] Fireproof sealing is required between the casing 12 and the prefabricated riser 10. The prefabricated riser 10 must not be in direct contact with concrete. Therefore, the casing 12 plays a role in isolating and protecting the prefabricated riser 10. There is also a riser insulation layer between the casing 12 and the prefabricated riser 10.

[0057] In the embodiment of the invention, before hoisting in S3, the site within 3m around the openings of each layer is cleaned and leveled, the opening protection is removed and the side roughening is completed, the opening structure size deviation is within ±30mm, and the verticality deviation of the openings of each layer is ±30mm.

[0058] Within the length range of the prefabricated composite riser unit section and above floors, priority should be given to completing the removal of the main structure wall formwork and beam side formwork around the pipe shaft opening to ensure that the area around the opening is flat and free of obstacles, providing an obstacle-free operating space for subsequent construction.

[0059] After the cleaning in S3 is completed, before on-site installation, install channel steel legs 70 at the floor and corresponding height on one side of the structural wall of the pipe opening, apply for a temporary stacking site on site, and conduct a trial hoisting inspection of the prefabricated combined riser;

[0060] In order to ensure the smooth installation of prefabricated composite risers, a temporary prefabricated riser stacking site must be applied for on-site before formal implementation, and the site size must be used for on-site trial lifting of prefabricated risers. The test contents of the trial lifting are:

[0061] a. The overall stability of the lifting lugs, hanging rods, channel steel frame fixing points and wall brackets during the entire process of prefabricated composite riser lifting.

[0062] b. Overall safety when using extended slings during lifting.

[0063] c. Coordination and linkage between special workers such as hoisting personnel, tower operators, signal workers, etc.

[0064] d. Discover other uncertain influencing factors in the lifting process. They may be:

[0065] Hang four lifting ropes on the four lifting ears of the channel steel frame, and hang a traction rope on the wall bracket; check the environment around the hanging parts to ensure that the site is open and there are no lifting obstacles above the trial lifting range. The ground signal worker instructs the tower crane to drop the hook to the lifting point. After the hook is correctly hooked, the tower crane is slowly lifted. During the lifting process, a special person is assigned to focus on checking the lifting ropes, the lifting ears on the channel steel frame, and the pipe fixing points on each bracket to see if there are any deformations, looseness, or abnormal noises. When the lifting end of the pipeline is 1m off the ground, the lifting is stopped, and a comprehensive inspection of the entire pipe group is carried out. After all the connection points are normal, the ground personnel hold the traction rope away from the hanging parts and continue to lift until the hanging parts are completely vertical and 1m off the ground. See attached Figure 5 , ground personnel should observe the stability of the hoisting parts. If there are no stability risks, the trial lifting is successful.

[0066] Then the prefabricated composite riser is officially hoisted. Before the on-site prefabricated composite riser is installed, the channel steel legs should be installed in advance on one side of the structural wall according to the floor and corresponding height marked on the drawing. A signalman is assigned to each of the three locations: the prefabricated composite riser installation layer, the main structure construction layer, and the material preparation yard (or transport vehicle). After the prefabricated composite riser is vertically hoisted until it is free from the ground or the transport vehicle, and after the pipe group is stable, it is hoisted to the vertical pipe opening J above the civil construction working surface, and the prefabricated composite riser is aligned with the vertical pipe opening J and slowly lowered to the channel steel legs 70; after the prefabricated composite riser is in place, the protection of the vertical pipe opening J on the main structure construction layer is immediately restored.

[0067] If there is a misalignment, carry out fine-tuning work on the lower floor in time. Set a fall chain above 1.5m on the construction floor of the prefabricated composite riser, and use the fall chain to make fine adjustments to the verticality, horizontal position, and alignment. Use a laser plumb line instrument to adjust the riser vertically, and check whether the positioning points are consistent. If the floor is uneven, use shims to adjust it, and the error of the butt joint should be controlled within the allowable deviation range. After the adjustment is qualified, fix the support points. The support points on the concrete beam are fixed with expansion bolts, and the prefabricated support points on the wall are fixed by welding. Welding should be done by spot welding first and then full welding to prevent deformation during welding and affect the installation accuracy of the next prefabricated riser.

[0068] In S4, plain concrete of the same grade as the floor slab concrete is used for pouring.

[0069] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0070] The present invention eliminates the need for embedding reinforcement at the hole, tying of steel bars and supporting formwork at the hanging hole, thereby simplifying the construction process, shortening the construction period, and having reliable quality and high safety. Ordinary materials are used, which are easy to process and reduce cost investment. The invention eliminates the need for embedding reinforcement at the hole, tying of steel bars and supporting formwork at the hanging hole, greatly reducing the investment in materials and personnel for blocking the hole and shortening the construction period. The factory processes the prefabricated combined risers, with low material loss, reduced construction rework, fast construction, excellent quality, safety and reliability. The on-site installation project is small and efficient, reducing labor cost investment. According to statistics, the application of this technology saves the following costs: 26,400 yuan in material costs (6.6 tons × 4,000 yuan / ton) for steel bars at the opening, 33,600 yuan in labor costs for planting steel bars (300 yuan / day × 28 days × 4 people), 33,600 yuan in labor costs for supporting formwork for hanging holes (300 yuan / day × 28 days × 4 people), 33,600 yuan in labor costs for steel bar processing and binding (300 yuan / day × 28 days × 4 people), 134,400 yuan in labor costs for pipeline installation (300 yuan / day × 56 days × 8 people), and 100,000 yuan in other measures, with a total cost saving of about 361,600 yuan, with significant economic benefits and the value of promotion for similar engineering construction. The present invention is overall safe and reliable, of high quality, efficient in construction, environmentally friendly and energy-saving, in line with the requirements of the national energy conservation and emission reduction policy, with high market demand, and is worthy of reference and application for similar projects, with significant social benefits.

[0071] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0072] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. An integrated method for installing a prefabricated combined riser in a super high-rise core tube and plugging a pipe well, characterized in that: The following steps are involved: S1. Determine the distribution range of the pipe wells for the construction of prefabricated composite risers during the design phase, adjust the pipe well openings from post-cast openings to reserved openings, and cancel reserved steel bars, later steel bar planting, and steel bar binding at the openings; S2. Design the sections of prefabricated composite risers to be consistent with the sections of the core tube rigid steel columns, and determine the pipe supports and fixing methods; S3. According to the prefabricated composite riser, pipe bracket and fixing method designed in S2, the prefabricated composite riser and the pipe frame cover plate on the prefabricated composite riser are processed, and the edges of the pipe frame cover plate are connected to the foldable flap through hinges to form a whole; then after hoisting, calibrating and fixing the whole, the flap is opened and pressed against the concrete structure on the side of the pipe opening, so that the pipe frame cover plate and the flap form an integrated opening plugging template; S4. During floor construction, use plain concrete directly to seal the openings.

2. The method for integrating installation of prefabricated combined risers of super high-rise core tubes and plugging of pipe wells according to claim 1 is characterized in that: In S2, the sections of the prefabricated composite risers are designed according to the sections of the rigid steel columns of the core tube, the length and width of the unit sections are determined, and the prefabricated composite risers are processed according to the length and width of the unit sections.

3. The method for integrating installation of prefabricated combined risers of super high-rise core tubes and plugging of pipe wells according to claim 1 is characterized in that: In S3, the openings on each floor are cleaned, roughened, checked for size and handed over before hoisting: within the length range of the prefabricated composite riser unit section and above, priority is given to the removal of the main structure wall formwork and beam side formwork around the pipe shaft opening to ensure that the area around the opening is flat and free of obstacles.

4. The integrated method for installing prefabricated combined risers of super high-rise core tubes and plugging pipe wells according to claim 3 is characterized in that: After the cleaning in S3 is completed, before the on-site installation, install channel steel legs on the floor and corresponding height on one side of the structural wall of the pipe opening, apply for a temporary stacking site on site, conduct a trial lifting inspection of the prefabricated composite riser, and then formally lift the prefabricated composite riser. Vertically lift the prefabricated composite riser until it is free from the ground or the transport vehicle, and then lift it to the vertical pipe opening above the civil engineering working surface. Align the prefabricated composite riser with the vertical pipe opening and slowly lower it to the channel steel legs; after the prefabricated composite riser is in place, immediately restore the vertical pipe opening protection of the main structure construction layer.

5. The integrated method for installing prefabricated combined risers of super high-rise core tubes and plugging pipe wells according to claim 4 is characterized in that: If the joints are not aligned, fine-tuning work needs to be carried out on the lower layer. Use a fall chain to make fine adjustments to the verticality, horizontal position, and joints, and use a laser plumb line meter to check the positioning points. After qualified adjustments, the support points can be fixed.

6. The integrated method for installing a prefabricated combined riser of a super high-rise core tube and plugging a pipe well according to any one of claims 1 to 5, characterized in that: The prefabricated composite risers described in each section of S2 include: A plurality of prefabricated risers (10), all made of seamless steel pipes; A channel steel frame (20) supports a plurality of vertically arranged prefabricated risers (10), on which steel plate lifting lugs (21) are arranged, and a suspension rod (11) is arranged on the outer wall of the prefabricated risers (10) corresponding to the lower part of the channel steel frame (20), and the bottom of the channel steel frame (20) is seated on the channel steel legs (70); The steel frame cover plate (30) is located below the channel steel frame (20) and is fixed to the prefabricated riser (10). A flap (40) is hingedly connected to its edge via a hinge. During the hoisting process, the angle between the flap (40) and the steel frame cover plate (30) is less than 90°. After hoisting and fixing, the flap (40) is opened and pressed against the concrete structure (80) on the side of the pipe opening.

7. The integrated method for installing prefabricated combined risers of super high-rise core tubes and plugging pipe wells according to claim 6 is characterized in that: The prefabricated composite riser also includes a pad (22) located at the top of the channel steel frame (20), and a plurality of load-bearing attachment plates (50) located on the outer wall of each of the prefabricated risers (10), wherein the pad (22) is located between the channel steel frame (20) and the load-bearing attachment plates (50).

8. The integrated method for installing prefabricated combined risers of super high-rise core tubes and plugging pipe wells according to claim 6 is characterized in that: The prefabricated composite riser also includes a wall-mounted bracket (60) located below the steel frame cover plate (30).

9. The method for integrating installation of prefabricated combined risers of super high-rise core tubes and plugging of pipe wells according to claim 6 is characterized in that: Each of the prefabricated risers (10) is provided with a casing (12) on the outside.

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