Construction method and construction system based on inner climbing tower crane structure

Abstract

The application provides a construction method based on an inner climbing tower crane structure. A tower body based on a steel beam material is arranged in a first layer height range of a core barrel, a tower crane foundation based on concrete is arranged in an Nth layer height range of the core barrel, and construction of the inner climbing tower crane structure is completed, so that the technical effects of reducing construction difficulty and improving construction efficiency are achieved.

Description

Technical Field

[0001] This invention belongs to the field of tower crane construction technology, and specifically relates to a construction method and system based on an internal climbing tower crane structure. Background Technology

[0002] In large-scale construction environments, especially for buildings with high ceilings, tower cranes are often used to assist in the construction of high-rise buildings. For example, the first phase of the Hubei Provincial Radio and Television Media Base project covers an area of ​​226 acres (150,836.15 square meters) with a total construction area of ​​405,376 square meters. It consists of a 40-story tower, an 11-story podium, and two basement levels, so tower cranes are needed to assist in the construction. However, the construction of internal climbing tower cranes has always been hampered by drawbacks such as high construction difficulty, potential safety hazards, and low construction efficiency.

[0003] In other words, the construction of existing internal climbing tower crane structures still has drawbacks such as high construction difficulty, easy safety hazards during construction, and low construction efficiency.

[0004] It is evident that how to address the challenges of constructing internal climbing tower crane structures, including high construction difficulty, potential safety hazards, and the need to improve construction efficiency, are technical issues that urgently require solutions for those skilled in the art. Summary of the Invention

[0005] The present invention provides a construction method based on an internal climbing tower crane structure to at least solve the above-mentioned technical problems;

[0006] To address the aforementioned problems, a first aspect of the present invention provides a construction method based on an internal climbing tower crane structure. The tower crane structure includes a tower crane foundation, the tower crane foundation includes a tower body, and the tower crane foundation is disposed within a core tube. The construction method includes: setting up the tower crane foundation along a first floor height range of the core tube; setting up the tower crane foundation along the first floor height range of the core tube includes: setting up the tower body based on a steel beam material; setting up the tower crane foundation along an Nth floor height range of the core tube, where N is a positive integer; setting up the tower crane foundation along the Nth floor height range of the core tube includes: setting up the tower body based on a concrete foundation.

[0007] In the first aspect, the tower crane foundation further includes first embedded parts, a load-bearing steel frame, and an inner climbing frame, characterized in that setting up the tower crane foundation along the first floor height range of the core tube includes: symmetrically setting a plurality of first embedded parts on the shear walls opposite to the core tube; connecting the opposite ends of the load-bearing steel frame to the plurality of first embedded parts; setting the inner climbing frame on the load-bearing steel beam; and in the inner climbing frame...

[0008] The tower body is constructed based on steel beams, and the tower body, based on steel beams, is constructed to climb within the aforementioned climbing frame.

[0009] In the first aspect, setting up the tower crane foundation within the range of the Nth floor height of the core tube includes: setting up a second embedded part within the range of the N+3th floor height of the core tube; pouring concrete based on the second embedded part to complete the tower body of the concrete foundation; and carrying out climbing construction of the tower body of the concrete foundation.

[0010] In the first aspect, the concrete pouring based on the second embedded part includes: setting an inner climbing frame inside the core tube based on the second embedded part; and setting a second inner climbing frame based on the inner climbing frame.

[0011] In the first aspect, based on the second embedded part, setting an inner climbing and squatting mechanism within the core tube includes:

[0012] The inner crawler is connected to the second embedded part by welding.

[0013] 5. In the first aspect, the embedded part includes round steel and steel plate; in the N+3rd layer of the core tube...

[0014] The second embedded part is set in the enclosure as follows: a number of holes with a diameter of 36 are pre-set on the steel plate; a number of φ32HPB300 round steel bars are selected and one end of the round steel bars is welded into the corresponding holes of the steel plate by plug welding; the other end of the round steel bars is set in the shear wall of the core tube.

[0015] In the first aspect, the construction method further includes: setting up a plurality of jacking mechanisms inside the core tube, such that the plurality of jacking mechanisms are connected to the tower body based on steel beams or based on concrete foundations; the climbing construction of the tower body based on steel beams within the inner climbing frame or the climbing construction of the tower body based on concrete foundations includes: using the jacking device to climb the tower body based on steel beams or the tower body based on concrete foundations in the height direction of the core tube.

[0016] 5. In the first aspect, the concrete pouring based on the second embedded part to complete the tower body of the concrete foundation includes: pouring the structure of the tower body that makes up the concrete foundation, wherein the structure of the tower body that makes up the concrete foundation includes a wall structure, a beam structure, a column structure, and a floor slab structure; pouring the wall structure, the beam structure, and the column structure includes setting a first template adapted to the wall structure, the beam structure, and the column structure, then pouring concrete in the first template, and performing an immersion vibration process using an immersion vibrator; pouring the floor slab structure includes setting a second template adapted to the floor slab structure, then pouring concrete in the second template, and then performing an immersion vibration process and a surface vibration process on the concrete in the second template.

[0017] In the first aspect, pouring concrete within a first formwork adapted to the beam structure includes: pouring concrete within the first formwork adapted to the beam structure using a grouting method.

[0018] Secondly, the present invention provides a construction system based on an internal climbing tower crane structure, the construction system including the construction method based on an internal climbing tower crane structure as described in any one of the above.

[0019] Beneficial effects: This invention proposes a construction method based on an internal climbing tower crane structure. By setting up a tower body made of steel beams within the first floor height range of the core tube and a tower crane foundation with a concrete foundation within the Nth floor height range of the core tube, the construction of the internal climbing tower crane structure is completed, thereby achieving the technical effects of reducing construction difficulty and improving construction efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this specification or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a flowchart of the construction method based on the internal climbing tower crane structure in Embodiment 1 of the present invention; Detailed Implementation

[0022] The technical solutions of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention are within the scope of protection of the present invention.

[0023] Furthermore, in the embodiments of this specification, when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in the embodiments of this specification are for illustrative purposes only and are not intended to limit the invention.

[0024] Example 1:

[0025] like Figure 1 As shown, this embodiment provides a construction method based on an internal climbing tower crane structure. The tower crane structure includes a tower crane foundation, the tower crane foundation includes a tower body, and the tower crane foundation is set inside the core tube.

[0026] The construction methods include: setting up tower crane foundations along the first floor height range of the core tube; setting up tower crane foundations along the first floor height range of the core tube includes: setting up the tower body based on steel beams; setting up tower crane foundations along the Nth floor height range of the core tube, where N is a positive integer; setting up tower crane foundations along the Nth floor height range of the core tube includes: setting up the tower body based on concrete foundations.

[0027] Specifically, this embodiment proposes a construction method based on an internal climbing tower crane structure. By setting up a tower body made of steel beams within the first floor height range of the core tube, and setting up a tower crane foundation with a concrete foundation within the Nth floor height range of the core tube, the construction of the internal climbing tower crane structure is completed, thereby achieving the technical effect of reducing construction difficulty and improving construction efficiency.

[0028] For the first and Nth floor height ranges in this embodiment, this embodiment proposes a specific implementation method: For tower cranes below 27 floors (inclusive), the original steel beam foundation is used, and the tower crane is lifted normally. For floors 30 floors and above, a concrete structure foundation is used. When the tower crane base is lifted to 27 floors, the 30-floor concrete structure is used as an attached wall layer, with embedded parts pre-embedded in the concrete structure, and the lifting frame welded to the embedded parts. When the tower crane base is lifted to 30 floors, the 30-floor concrete structure serves as the tower crane foundation, and the 33-floor concrete structure serves as an attached wall layer. When the tower crane base is lifted to 33 floors, the 33-floor concrete structure serves as the tower crane foundation, and the 36-floor concrete structure serves as an attached wall layer.

[0029] When the tower crane base is raised to the 36th floor, the 36th floor concrete structure serves as the tower crane foundation, and the 39th floor concrete structure is used as the wall attachment layer. This is the final state of the tower crane.

[0030] For the tower crane foundation installation within the first floor range, the tower crane foundation also includes the first embedded parts, the load-bearing steel frame, and the inner climbing frame. Setting up the tower crane foundation within the first floor height range of the core tube includes: symmetrically setting several first embedded parts on the shear walls opposite to the core tube; connecting the opposite ends of the load-bearing steel frame to the several first embedded parts; setting the inner climbing frame on the load-bearing steel beam; setting up the tower body based on the steel beam material within the inner climbing frame, and allowing the tower body based on the steel beam material to climb within the inner climbing frame.

[0031] Furthermore, for the installation of tower crane foundations within the range of the Nth floor, setting up tower crane foundations within the range of the Nth floor height of the core tube includes: setting up a second embedded part within the range of the N+3th floor height of the core tube; pouring concrete based on the second embedded part to complete the tower body of the concrete foundation; and carrying out climbing construction of the tower body of the concrete foundation.

[0032] In some possible implementations, concrete pouring based on the second embedded part includes: setting an inner climbing frame inside the core tube based on the second embedded part; and setting a second inner climbing frame based on the inner climbing frame.

[0033] Specifically, for the internal climbing frame installed within the core tube, this embodiment proposes a specific implementation method: an internal climbing frame is installed at the lower part of the tower crane for connection to the foundation. The internal climbing frame is welded to the foundation embedded parts using fillet welds, with full welding around all four sides. The internal climbing frame and the internal climbing frame are connected by bolts. During the welding and fixing of the internal climbing frame, a specialist from the tower crane manufacturer is dispatched to the site to provide guidance and verify the positioning and elevation of the internal climbing frame to ensure a smooth bolt connection between the internal climbing frame and the internal climbing frame.

[0034] Welding process requirements

[0035] (1) Pre-welding preparation

[0036] 1) The welding material selected is E5015 welding electrode, which has a tensile strength of 470-600MPa for the fully deposited metal and is a low-hydrogen basic electrode. The welding machine should be a DC welding machine with a rated current of 400A, an electrode current of 135-170A, an arc voltage of 21-23V, and a welding speed of 160-180mm / min. 2) Before use, the welding electrodes must be dried in a drying oven at 350-400℃ for 2 hours as specified. The electrodes should be stored in a heat-insulating container at 100-150℃ and used immediately. During use, ensure the electrodes are dry and take appropriate moisture-proof measures.

[0037] (2) Environmental requirements

[0038] 1) Outdoor wind protection: When manual arc welding exceeds 10 m / s, reliable protective measures should be taken at the welding site; 2) Outdoor moisture protection: When the relative humidity exceeds 90%, local protective treatment is required.

[0039] (3) Welding requirements

[0040] 1) Welders must possess the corresponding welding qualification certificate and comply with all welding operation requirements; 2) After welding defective areas, grind them smooth; 3) Arc initiation must be completed at the bevel. Arc initiation and arc striking on the base material surface outside the welding area are prohibited. If defects such as porosity or cracks are found at the arc initiation and termination points, they should be cleaned up promptly; 4) After welding is completed, clean the spatter and dirt from the weld surface, and then perform 100% visual and magnetic particle inspection on all welds; 5) The weld surface must be free of defects such as cracks, lack of fusion, slag inclusions, porosity, incomplete penetration, and undercut; 6) Welds require non-destructive testing.

[0041] In some possible implementations, setting an inner climbing member within the core tube based on the second embedded member includes: connecting the inner climbing member to the second embedded member by welding. The second embedded member includes round steel bars and steel plates; setting the second embedded member within the Nth layer height range of the core tube includes: pre-setting a plurality of holes with a diameter of 36 on the steel plate; selecting a plurality of φ32HPB300 round steel bars, welding one end of the plurality of round steel bars to the corresponding holes in the steel plate by plug welding; and setting the other end of the plurality of round steel bars within the shear wall of the core tube.

[0042] Specifically, the connection between the φ32HPB300 round steel and the δ30 steel plate is crucial (plug welding). Eight φ36 holes must first be cut into the steel plate, then the round steel is inserted into the holes and plug welded together. Strict quality control of the plug welding is essential. Before welding, the surface of the weldment must be cleaned of debris, rust, and oil. The embedded part is made of Q235 steel and uses E4303 welding rods. Welding must be strictly controlled according to the E4303 welding rod instructions. During fabrication, ensure the round steel is perpendicular to the anchor plate and strictly control the relative positions of each round steel; spot welding is sufficient between the positioning reinforcement and the round steel. When embedding the part, the outer surface of the anchor plate must be flush with the building surface and must not be covered by concrete. To facilitate embedding, the positioning reinforcement can be cut during installation, but the positions of the round steel must not be moved or deformed. The short round steel is welded to the anchor rod using E4303 welding rods, with a weld thickness of 10mm.

[0043] In some possible implementations, the construction method further includes: setting up a plurality of jacking mechanisms inside the core tube, and connecting the plurality of jacking mechanisms to the tower body based on steel beams or on a concrete foundation; the climbing construction of the tower body based on steel beams within the inner climbing frame or the climbing construction of the tower body on a concrete foundation includes: using a jacking device to climb the tower body based on steel beams or on a concrete foundation in the height direction of the core tube.

[0044] For tower construction using steel beams as the foundation and climbing within an inner climbing frame, or for climbing of a tower with a concrete foundation, this embodiment proposes the following method: 1. Raise the control lever of the hydraulic cylinder support upwards, causing the hydraulic cylinder lifting beam to approach the tower body. 2. Operate the pump station to extend the hydraulic cylinder until the lifting beam's hanging shoe inserts into the lower part of the tower body's lifting lug. 3. Start the pump station to slightly lift the tower body, just until the support device is disengaged from the support. 4. Simultaneously, pull out the eight wedges of the climbing frame at the lifting mechanism; each wedge is connected to the support by two pins.

[0045] 5. Remove the connecting pin between the support seat and the support plate. 6. Disconnect the climbing frame connected to the 0 special section and install the support seat onto the climbing frame at the jacking mechanism. 7. Operate the pump station to...

[0046] 8. Lift the tower body upwards until the stop device engages with the tower body lifting lug. 9. Operate the pump station to unload the hydraulic cylinder. Remove the safety pin of the lifting shoe. 10. Press down the operating handle of the hydraulic cylinder bracket to detach the hydraulic cylinder from the tower body and support it on the hydraulic cylinder bracket. 11. Operate the pump station to retract the hydraulic cylinder until the lifting beam lifting shoe can be inserted into the next tower body lifting lug.

[0047] Up to the bottom. 11. Operate the operating handle of the hydraulic cylinder bracket to bring the hydraulic cylinder lifting beam closer to the tower body and insert the hanging shoe into the lower part of the tower body lifting lug. Insert the safety pin. 12. Repeat the above steps until the hole on the support plate can...

[0048] 13. Connect the support plate to the support seat pin; 14. Operate the pump station to slowly retract the cylinder, allowing the support device to fully bear the load; 15. Pull out the pin between the climbing frame and the uppermost climbing frame and the wedge at the lifting mechanism, allowing the wedge to wedge in evenly; 16. Operate the pump station to unload the cylinder; 17. Connect the cylinder bracket.

[0049] Press down the operating handle to detach the hydraulic cylinder lifting beam from the tower body and support the hydraulic cylinder on the cylinder bracket. Remove the safety pin from the hanging shoe. 18. Dismantle the lifting mechanism, remove the stop device, and unload the counterweight. Precautions: During the lifting process, the operator must closely observe the pressure gauge. The pressure must meet the requirements; otherwise, the lifting should be stopped immediately until the cause of the fault is found and eliminated.

[0050] In some possible implementations, the concrete pouring to complete the tower body of the concrete foundation, based on the second embedded part, includes: pouring the structure of the tower body that makes up the concrete foundation, wherein the five structures of the tower body that make up the concrete foundation include wall structure, beam structure, column structure and floor slab structure; pouring the wall structure, beam structure and column structure includes setting up a first template adapted to the wall structure, beam structure and column structure, then pouring concrete in the first template, and performing an immersion vibration process using an immersion vibrator; pouring the floor slab structure includes setting up a second template adapted to the floor slab structure, then pouring concrete in the second template, and then performing an immersion vibration process and a surface vibration process on the concrete in the second template.

[0051] Specifically, regarding the pouring steps, this embodiment proposes a specific implementation method: (1) Beam and slab concrete should be poured simultaneously. The pouring method starts from one end using the "grouting method," that is, first pour the beam, then pour it in layers according to the beam height to form a stepped shape. When it reaches the bottom position of the slab, pour it together with the slab concrete. As the stepped shape continues to extend, the pouring of beam and slab concrete continues forward. (2) When pouring slab concrete, the loose thickness of the concrete should be slightly greater than the slab thickness. A flat vibrator is used for vibration; for densely reinforced areas such as beam and column joints, an immersion vibrator is used. The vibration point spacing is 40cm, arranged in a quincunx pattern, with quick insertion and slow withdrawal. Vibration is carried out point by point in sequence to ensure no missed vibration. The vibrator should avoid colliding with the reinforcing bars and embedded parts as much as possible. (3) Control of concrete slab elevation and flatness: Insert an 800mm long φ12 steel bar every 2m along the length of the frame beam and weld it to the main reinforcement of the beam. Extend it 600mm above the slab elevation as a guide bar. Mark the elevation line 500mm on the inserted bars and the main reinforcement of the columns and mark it with white tape. During the finishing process, pull lines between the reinforcement of each column to form a control network. Use a steel tape measure to measure the distance from the control line to the concrete surface to control the elevation of the slab concrete surface. (4) Before the initial setting of the concrete, use a screed to smooth the concrete surface. Before the final setting, perform a second smoothing and finishing. After completion, immediately cover it with plastic film to prevent the moisture from evaporating too quickly and causing cracks. After the final setting, water curing time shall not be less than 7 days. (5) When pouring beams and slabs that are integrated with columns and walls, stop for 1 to 1.5 hours after the columns and walls are poured to allow them to settle initially before continuing to pour. (6) When the concrete strength grades of beams and columns are different, the columns should be poured first and then the beams, as shown in the figure below. Before pouring concrete, steel reinforcement supports and special galvanized steel wire mesh should be set up to block the concrete, and the bonding surface should be roughened. The pouring of beam concrete must be completed before the initial setting of column concrete.

[0052] In some possible implementations, pouring concrete into a first formwork adapted to the beam structure includes: pouring concrete into the first formwork adapted to the beam structure using a grouting method.

[0053] Example 2:

[0054] This invention provides a construction system based on an internal climbing tower crane structure. The construction system includes any of the above-mentioned construction methods based on the internal climbing tower crane structure. This construction method completes the construction of the internal climbing tower crane structure, thereby achieving the technical effects of reducing construction difficulty and improving construction efficiency.

[0055] Since Embodiment 2 and Embodiment 1 are embodiments under the same inventive concept and have some identical structures, the structures in Embodiment 2 that are substantially the same as those in Embodiment 1 will not be described in detail. For the parts not described in detail, please refer to Embodiment 1.

[0056] Finally, it should be noted that the above embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, 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. All should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

[0057] Although embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for the present invention. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A construction method based on an internal climbing tower crane structure, wherein the tower crane structure includes a tower crane foundation, the tower crane foundation includes a tower body, and the tower crane foundation is disposed within a core tube, characterized in that, The construction method includes: A tower crane foundation is installed along the first floor height range of the core tube; the installation of the tower crane foundation along the first floor height range of the core tube includes: installing the tower body based on steel beams; A tower crane foundation is installed along the Nth floor height range of the core tube, where N is a positive integer; installing the tower crane foundation along the Nth floor height range of the core tube includes: installing the tower body with a concrete foundation; The tower crane foundation further includes a first embedded part, a load-bearing steel frame, and an inner climbing frame. The tower crane foundation is characterized by the following features: [The text abruptly ends here, so the translation also ends here.] Several first embedded parts are symmetrically arranged on the shear wall opposite the core tube; The opposite ends of the load-bearing steel frame are connected to several of the first embedded parts. The inner climbing frame is installed on the load-bearing steel beam; The tower body, based on steel beams, is installed in the inner climbing frame, and the tower body, based on steel beams, is then constructed to climb within the inner climbing frame. The provision of tower crane foundations along the Nth floor height range of the core tube includes: A second embedded part is installed within the height range of the N+3rd layer of the core tube; Concrete is poured based on the second embedded part to complete the tower body of the concrete foundation; The tower body of the concrete foundation is then raised during construction. The concrete pouring based on the second embedded part includes: Based on the second embedded part, an inner climbing and squatting part is set inside the core tube; A second inner climbing frame is set up based on the aforementioned inner climbing squat.

2. The construction method based on the internal climbing tower crane structure according to claim 1, characterized in that, Based on the second embedded part, the internal crawling and squatting mechanism installed within the core tube includes: The inner crawler is connected to the second embedded part by welding.

3. The construction method based on the internal climbing tower crane structure according to claim 2, wherein the embedded parts include round steel and steel plates; characterized in that, The second embedded part is installed within the height range of the Nth layer of the core tube, including: Several holes with a diameter of 36 are pre-set on the steel plate; Several φ32HPB300 round steel bars are selected, and one end of the round steel bars is welded into the corresponding hole of the steel plate by plug welding. The other end of several of the round steel bars is placed inside the shear wall of the core tube.

4. The construction method based on the internal climbing tower crane structure according to claim 3, characterized in that, Construction methods also include: A number of lifting mechanisms are provided inside the core tube, and the lifting mechanisms are connected to the tower body which is based on steel beams or on a concrete foundation. The construction of the tower body based on steel beams within the inner climbing frame, or the construction of the tower body on the concrete foundation, includes: using the lifting device to lift the tower body based on steel beams or the tower body on the concrete foundation in the height direction of the core tube.

5. The construction method based on the internal climbing tower crane structure according to claim 4, characterized in that, The process of pouring concrete based on the second embedded part to complete the tower body of the concrete foundation includes: The structure of the tower body that forms the concrete foundation is poured, and the structure of the tower body that forms the concrete foundation includes a wall structure, a beam structure, a column structure, and a floor slab structure. The pouring of the wall structure, the beam structure, and the column structure includes setting up a first template adapted to the wall structure, the beam structure, and the column structure, then pouring concrete into the first template, and performing an immersion vibration process using an immersion vibrator. The pouring of the floor slab structure includes setting up a second template adapted to the floor slab structure, then pouring concrete into the second template, and then performing an immersion vibration process and a surface vibration process on the concrete in the second template.

6. The construction method based on the internal climbing tower crane structure according to claim 5, characterized in that, Pouring concrete within a first formwork adapted to the beam structure includes: The concrete in the first formwork, which is adapted to the beam structure, is poured using the grouting method.

7. A construction system based on an internal climbing tower crane structure, characterized in that: The construction system includes the construction method based on an internal climbing tower crane structure as described in any one of claims 1-6.

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