Construction method of super high-rise building tower crane

Abstract

The invention relates to the technical field of super high-rise building construction, in particular to a construction method of a super high-rise building tower crane. The construction method of the super high-rise building tower crane specifically comprises the following steps that S1, positioning and hole digging are conducted; s2, constructing a high pile cap foundation; s3, a tower crane is installed, specifically, the tower crane is installed on the high pile cap foundation, and the tower crane can be put into foundation pit supporting engineering and basement engineering to be used; s4, a supporting structure is constructed, specifically, the latticed columns are embedded into the core tube shear wall structure to form the supporting structure; s5, constructing a main body structure; and S6, the internal climbing tower crane is converted, specifically, when the to-be-built building is constructed to a certain layer number, supporting legs of the internal climbing tower crane are installed, meanwhile, the high-pile bearing platform tower crane is converted into the internal climbing tower crane, a high-pile bearing platform foundation is cut off after construction is completed, and the internal climbing tower crane is subsequently used as a main tool for vertical transportation of the super high-rise building. The method has the advantages that the tower crane is inserted in advance to serve as a vertical transportation tool, and the construction progress is accelerated.

Description

Technical Field

[0001] The invention relates to the technical field of super high-rise building construction, and in particular to a construction method of a super high-rise building tower crane. Background Art

[0002] In recent years, with the rapid development of urban construction, super high-rise buildings have sprung up like mushrooms after rain. Because some super high-rise building projects are located in core areas, the limited site makes it impossible to install small tower cranes outside the foundation pit of the proposed building for vertical material transportation.

[0003] Existing solutions include: non-high pile cap projects and high pile cap projects. If the high pile cap is not used as the tower crane foundation, the tower crane can only be installed after the earthwork is excavated to the base. During the foundation pit support and basement construction stage, a large number of truck cranes or crawler cranes are required for vertical material transportation, which is costly. If the project uses a high pile cap as the tower crane foundation, the tower crane needs to be installed outside the core tube area (preferably outside the basement structure). If site conditions are limited, the tower crane foundation needs to be constructed within the basement structure of the proposed building. This approach requires the floor holes reserved for the above-mentioned tower crane parts to be sealed during the main structure construction stage, which affects the quality of the structural construction.

[0004] Therefore, a construction method for a super high-rise building tower crane is provided to address the deficiencies in the prior art. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a construction method for a super high-rise building tower crane, aiming to solve the problem that the tower crane cannot be installed in the early stage due to site limitations.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A construction method for a super high-rise building tower crane comprises the following steps:

[0008] S1: Positioning and digging holes: Lay out lines to locate the core tube area, and lay out lines to locate the tower crane foundation in the core tube area. According to the area of ​​the located tower crane foundation, dig the foundation hole downward at the original ground elevation to form a rotary pile hole;

[0009] S2: Construction of high pile cap foundation: Make a rotary pile reinforcement cage, put the rotary pile reinforcement cage into the assembled lattice column and fix it with the assembled lattice column, and then hoist it into the rotary pile hole after forming a whole, and construct the tower crane high pile cap foundation on the original ground;

[0010] S3: Install the tower crane: When constructing the high pile cap foundation of the tower crane, bury the tower crane foundation section into the cap, and install the tower crane on the high pile cap foundation. After the tower crane is installed, it can be put into use in the foundation pit support project and basement project;

[0011] S4: Construction of supporting structure: excavate downwards, install reinforcement structure on lattice columns as the excavation depth increases, construct basement structure, gradually remove reinforcement structure as the basement structure is constructed, bury lattice columns in the core tube shear wall structure to form supporting structure;

[0012] S5: Construction of the main structure: When the proposed building enters the main structure construction, the high pile cap tower crane will continue to be used as the main tool for vertical transportation;

[0013] S6: Conversion to an inner climbing tower crane: When the proposed building is constructed to a certain number of floors, the legs of the inner climbing tower crane are installed, and the high pile cap tower crane is converted to an inner climbing tower crane. After the construction is completed, the high pile cap foundation is removed, and the inner climbing tower crane is subsequently used as the main tool for vertical transportation of super high-rise buildings.

[0014] As a further improvement of the technical solution of the present invention, in step S1, a rotary drilling process is adopted when excavating the base hole.

[0015] As a further improvement of the technical solution of the present invention, in step S2, the height of the lattice column is constructed to the elevation of the high pile cap foundation, and the thickness of the high pile cap foundation is greater than 1500 mm.

[0016] As a further improvement of the technical solution of the present invention, in step S2, when constructing the tower crane high pile cap foundation on the original ground, the lower end of the high pile cap foundation is sunk into the ground and connected with the lattice column, and the depth of the lattice column buried in the high pile cap foundation is not less than 850 mm.

[0017] As a further improvement of the technical solution of the present invention, in step S4, the reinforcement structure includes an oblique beam and a transverse beam, and the reinforcement height of the transverse beam is not greater than 2400 mm.

[0018] As a further improvement of the technical solution of the present invention, in step S4, earth is excavated downward to the bottom plate of the elevator shaft, and the core tube shear wall structure is the core tube elevator shaft.

[0019] As a further improvement of the technical solution of the present invention, in step S6, after the support legs are installed, the tower crane is installed on the support legs, the high pile cap foundation is cut off, and the high pile cap tower crane is converted into an inner climbing tower crane.

[0020] As a further improvement of the technical solution of the present invention, in step S6, the removed high pile cap foundation part is integrated into the core tube shear wall structure.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] In the construction method of the super high-rise building tower crane of the present invention, the tower crane can be installed after the project starts, and there is no need to wait for the earthwork to be excavated to the base before installing the tower crane. The tower crane can be used as a vertical transportation tool in the foundation pit support stage and the basement construction stage, reducing the investment in automobile cranes and crawler cranes, reducing construction costs, and speeding up the construction progress; a high-pile foundation tower crane is made in the core tube elevator shaft of the super high-rise building, and when the main structure of the high-pile foundation tower crane is constructed to a certain number of floors, it is converted into an inner climbing tower crane to avoid the basement structure. In the later stage, there is no need to perform secondary sealing on the reserved openings of the top plates of each floor of the basement structure, thereby improving the project quality and speeding up the construction progress. The construction method of the super high-rise building tower crane has the characteristics of inserting the tower crane in advance as a vertical transportation tool to speed up the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The technology of the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments:

[0024] Figure 1 It is a structural schematic diagram of the line laying and positioning in step S1 of the construction method of the super high-rise building tower crane of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the hole digging in step S1 of the construction method of the super high-rise building tower crane of the present invention;

[0026] Figure 3 It is a structural schematic diagram of installing lattice columns in step S2 of the construction method of a super high-rise building tower crane of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the construction of a high pile cap foundation in step S2 of the construction method of a super high-rise building tower crane of the present invention;

[0028] Figure 5 It is a structural schematic diagram of installing a tower crane and a reinforcement structure in step S3 of the construction method of a super high-rise building tower crane of the present invention;

[0029] Figure 6 It is a structural schematic diagram of the construction support structure in step S4 of the construction method of the super high-rise building tower crane of the present invention;

[0030] Figure 7 It is a structural schematic diagram of the main construction structure in step S5 of the construction method of the super high-rise building tower crane of the present invention.

[0031] Figure 8 It is a structural schematic diagram of converting an inner climbing tower crane in step S6 of the construction method of a super high-rise building tower crane of the present invention.

[0032] In the figure:

[0033] 1. Core tube area; 2. Tower crane foundation; 3. Rotary bored pile hole; 4. Lattice column; 5. High pile cap foundation; 6. Reinforced structure; 7. Core tube shear wall; 8. Support foot. DETAILED DESCRIPTION

[0034] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, scheme and effect of the present invention. It should be noted that the embodiments in this application and the features in the embodiments can be combined with each other without conflict. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0035] It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly fixed or connected to the other feature, or it may be indirectly fixed or connected to the other feature. In addition, the descriptions of up, down, left, right, etc. used in the present invention are only relative to the relative positional relationship of the components of the present invention in the drawings.

[0036] Reference Figures 1 to 8 , a construction method of a super high-rise building tower crane, comprising the following steps:

[0037] S1: Positioning and digging holes: Laying out lines to position the core tube area 1, and laying out lines to position the tower crane foundation 2 in the core tube area 1. According to the area of ​​the located tower crane foundation 2, dig a foundation hole downward at the original ground elevation to form a rotary pile hole 3;

[0038] S2: Construction of high pile cap foundation 5: Make a rotary pile steel cage, put the rotary pile steel cage into the assembled lattice column 4 and fix it with the assembled lattice column 4, and then hoist it into the rotary pile hole 3 after forming a whole, and construct the tower crane high pile cap foundation 5 on the original ground;

[0039] S3: Install the tower crane: According to the requirements of the tower crane instruction manual, when constructing the tower crane high pile cap foundation 5, bury the 2nd section of the tower crane foundation into the cap, and install the tower crane on the high pile cap foundation 5; after the tower crane is installed, the tower crane will be put into use in the foundation pit support project and the basement project to speed up the construction progress and reduce the vertical transportation cost.

[0040] S4: construct the support structure: excavate downwards, install the reinforcement structure 6 on the lattice column 4 as the excavation depth increases, construct the basement structure, gradually remove the reinforcement structure 6 as the basement structure is constructed, bury the lattice column 4 into the core tube shear wall 7 structure to form a support structure, and further reinforce the support structure of the tower crane high pile cap;

[0041] S5: Construction of the main structure: When the proposed building enters the main structure construction, the high pile cap tower crane will continue to be used as the main tool for vertical transportation;

[0042] S6: Conversion to an inner climbing tower crane: When the proposed building is constructed to a certain number of floors, the support legs 8 of the inner climbing tower crane are installed, and the high pile foundation tower crane is converted to an inner climbing tower crane. After the construction is completed, the high pile foundation 5 is removed, and the inner climbing tower crane is subsequently used as the main tool for vertical transportation of super high-rise buildings.

[0043] Among them, the tower crane can be installed after the project starts, without waiting for the earthwork to be excavated to the base before installing the tower crane. The tower crane can be used as a vertical transportation tool in the foundation pit support stage and the basement construction stage, reducing the investment in automobile cranes and crawler cranes, reducing construction costs, and speeding up the construction progress; a high-pile foundation tower crane is made in the core tube elevator shaft of the super high-rise building. When the main structure of the high-pile foundation tower crane is constructed to a certain number of floors, it is converted into an inner climbing tower crane to avoid the basement structure. In the later stage, there is no need to perform secondary sealing on the reserved openings on the top plates of each floor of the basement structure, which improves the project quality and speeds up the construction progress. The construction method of the tower crane of this super high-rise building has the characteristics of inserting the tower crane as a vertical transportation tool in advance to speed up the construction progress.

[0044] In one embodiment, in step S1, a rotary drilling process is used when excavating the base hole.

[0045] In one embodiment, in step S2, the height of the lattice column 4 is constructed to the elevation of the high pile cap foundation 5, and the thickness of the high pile cap foundation 5 is greater than 1500mm. When the high pile cap foundation 5 of the tower crane is constructed on the original ground, the lower end of the high pile cap foundation 5 is sunk into the ground and connected with the lattice column 4, and the depth of the lattice column 4 buried in the high pile cap foundation 5 is not less than 850mm. The tower crane foundation 2 adopts the form of prefabricated assembled lattice column 4 high pile cap foundation 5, which avoids the quality problems and cumbersome workload of the tower crane being installed in the basement area and the re-repair of the hole in the later stage, thereby improving the quality of the project and saving the construction cost.

[0046] In one embodiment, in step S4, the reinforcement structure 6 includes an oblique beam and a transverse beam, and the transverse beam reinforcement height is not greater than 2400 mm. Excavate downward to the bottom plate of the elevator shaft, and the core tube shear wall 7 structure is the core tube elevator shaft, avoiding the basement structure. In the later stage, there is no need to perform secondary sealing on the reserved openings of the top plates of each floor of the basement structure, thereby improving the project quality and accelerating the construction progress.

[0047] In one embodiment, in step S6, after the support legs 8 are installed, the tower crane is installed on the support legs 8, the high pile cap foundation 5 is removed, and the high pile cap tower crane is converted into an inner climbing tower crane. The removed high pile cap foundation 5 is partially integrated into the core tube shear wall 7 structure. The tower crane is positioned in the core tube climbing tower area of ​​the proposed building, and is prepared in advance for conversion to an inner climbing tower crane during the main structure construction phase, thereby reducing the workload of tower crane installation and disassembly during the main structure construction phase and accelerating the construction progress.

[0048] For other contents of the construction method of the super high-rise building tower crane described in the present invention, please refer to the prior art and will not be repeated here.

[0049] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Therefore, any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

[0050] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0051] 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A construction method for a super high-rise building tower crane, characterized in that: The following steps are involved: S1: Positioning and digging holes: Lay out lines to locate the core tube area, and lay out lines to locate the tower crane foundation in the core tube area. According to the area of ​​the located tower crane foundation, dig the foundation hole downward at the original ground elevation to form a rotary pile hole; S2: Construction of high pile cap foundation: Make a rotary pile reinforcement cage, put the rotary pile reinforcement cage into the assembled lattice column and fix it with the assembled lattice column, and then hoist it into the rotary pile hole after forming a whole, and construct the tower crane high pile cap foundation on the original ground; S3: Install the tower crane: When constructing the high pile cap foundation of the tower crane, bury the tower crane foundation section into the cap, and install the tower crane on the high pile cap foundation. After the tower crane is installed, it can be put into use in the foundation pit support project and basement project; S4: Construction of supporting structure: excavate downwards, install reinforcement structure on lattice columns as the excavation depth increases, construct basement structure, gradually remove reinforcement structure as the basement structure is constructed, bury lattice columns in the core tube shear wall structure to form supporting structure; S5: Construction of the main structure: When the proposed building enters the main structure construction, the high pile cap tower crane will continue to be used as the main tool for vertical transportation; S6: Conversion to an inner climbing tower crane: When the proposed building is constructed to a certain number of floors, the legs of the inner climbing tower crane are installed, and the high pile cap tower crane is converted to an inner climbing tower crane. After the construction is completed, the high pile cap foundation is removed, and the inner climbing tower crane is subsequently used as the main tool for vertical transportation of super high-rise buildings.

2. The construction method of a super high-rise building tower crane according to claim 1, characterized in that: In step S1, a rotary drilling process is used when excavating the base hole.

3. The construction method of a super high-rise building tower crane according to claim 1, characterized in that: In step S2, the lattice column height is constructed to the elevation of the high pile cap foundation, and the thickness of the high pile cap foundation is greater than 1500 mm.

4. A construction method for a super high-rise building tower crane according to claim 1 or 3, characterized in that: In step S2, when constructing the tower crane high pile cap foundation on the original ground, the lower end of the high pile cap foundation is sunk into the ground and connected with the lattice column, and the depth of the lattice column buried in the high pile cap foundation is not less than 850 mm.

5. The construction method of a super high-rise building tower crane according to claim 1, characterized in that: In step S4, the reinforcement structure includes an oblique beam and a transverse beam, and the reinforcement height of the transverse beam is not greater than 2400 mm.

6. The construction method of a super high-rise building tower crane according to claim 1, characterized in that: In step S4, earth is excavated downward to the bottom plate of the elevator shaft, and the core tube shear wall structure is the core tube elevator shaft.

7. The construction method of a super high-rise building tower crane according to claim 1, characterized in that: In step S6, after the support legs are installed, the tower crane is installed on the support legs, the high pile cap foundation is cut off, and the high pile cap tower crane is converted into an inner climbing tower crane.

8. A construction method for a super high-rise building tower crane according to claim 1 or 7, characterized in that: In step S6, the removed high pile cap foundation portion is integrated into the core tube shear wall structure.

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