Construction method of super high-rise building tower crane

Abstract

The application relates to the technical field of super-high building construction, in particular to a construction method of a super-high building tower crane. The construction method of the super-high building tower crane specifically comprises the following steps: S1, positioning and digging a hole; S2, constructing a high-pile pile cap foundation; S3, installing the tower crane: installing the tower crane on the high-pile pile cap foundation, and the tower crane can be used in a foundation pit supporting project and a basement project; S4, constructing a supporting structure: embedding a lattice column into a core tube shear wall structure to form the supporting structure; S5, constructing a main body structure; S6, converting an inner climbing tower crane: when a building under construction reaches a certain number of layers, installing a supporting leg of the inner climbing tower crane, simultaneously converting the high-pile pile cap tower crane into the inner climbing tower crane, cutting off the high-pile pile cap foundation after construction is completed, and using the inner climbing tower crane as a main tool for vertical transportation of the super-high building. The application has the advantages that the tower crane is inserted in advance as a vertical transportation tool, and the construction progress is accelerated.

Description

TECHNICAL FIELD

[0001] The present application 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. BACKGROUND

[0002] In recent years, with the rapid development of urban construction, super high-rise buildings have sprung up like mushrooms. Due to the location of some super high-rise building projects in the core area, the site is limited, which leads to the inability to install a small tower crane outside the foundation pit of the proposed building for vertical material transportation.

[0003] The existing solutions include non-high-pile pile cap projects and high-pile pile cap projects. If a high-pile pile cap is not used as a tower crane foundation, the tower crane needs to be installed after the excavation of the earthwork to the base, and during the foundation pit support and basement construction stage, a large number of truck cranes or crawler cranes need to be used for vertical material transportation, which is very costly. If the project uses a high-pile pile cap as a tower crane foundation, the tower crane needs to be installed outside the core tube area (preferably outside the basement structure), and if the site conditions are limited, the tower crane foundation construction needs to be carried out within the basement structure range of the proposed building. This method needs to seal and repair the floor holes reserved for the tower crane during the main structure construction stage, which affects the construction quality of the structure.

[0004] Therefore, in view of the deficiencies of the prior art, a construction method of a super high-rise building tower crane is provided. SUMMARY

[0005] In order to overcome the deficiencies of the prior art, the present application provides a construction method of a super high-rise building tower crane, which aims to solve the problem of being limited by the site and being unable to install a tower crane in the early stage.

[0006] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0007] A construction method of a super high-rise building tower crane, comprising the following steps:

[0008] S1: Positioning hole digging: positioning the core tube area by laying out a line, and positioning the tower crane foundation in the core tube area. According to the area of the positioned tower crane foundation, a base hole is excavated downward from the original ground level to form a rotary pile hole;

[0009] S2: Construction of high-pile pile cap foundation: making a rotary pile reinforcement cage, fixing the rotary pile reinforcement cage into the assembled lattice column after placing it into the assembled lattice column, forming an integral whole, and then hoisting it into the rotary pile hole to construct the tower crane high-pile pile cap foundation on the original ground;

[0010] S3: Installation of tower crane: while constructing the tower crane high-pile pile cap foundation, the tower crane foundation section is buried in the pile cap, and the tower crane is installed on the high-pile pile cap foundation. After the installation of the tower crane is completed, the tower crane can be put into use for the foundation pit support project and the basement project;

[0011] S4: construction support structure: excavate earthwork downward, install reinforcement structure to latticed column as the depth of earthwork excavation, construct basement structure, gradually cut off reinforcement structure as the construction of basement structure, and embed latticed column into core tube shear wall structure to form support structure;

[0012] S5: construction of main body structure: continue to use high-pile pile cap tower crane as the main tool of vertical transportation when the proposed building enters the main body structure construction;

[0013] S6: conversion of inner climbing tower crane: install the foot of the inner climbing tower crane when the construction of the proposed building reaches a certain number of layers, and convert the high-pile pile cap tower crane into an inner climbing tower crane, cut off the high-pile pile cap foundation after construction, and use the inner climbing tower crane as the main tool of vertical transportation for super high-rise buildings.

[0014] As a further improvement of the technical scheme of the application, in step S1, rotary digging hole forming process is used when excavating the foundation hole.

[0015] As a further improvement of the technical scheme of the application, in step S2, the height of the latticed column is constructed to the high-pile pile cap foundation elevation, and the thickness of the high-pile pile cap foundation is greater than 1500mm.

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

[0017] As a further improvement of the technical scheme of the application, in step S4, the reinforcement structure includes inclined beams and transverse beams, and the transverse beam reinforcement height is not greater than 2400mm.

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

[0019] As a further improvement of the technical scheme of the application, in step S6, after the foot is installed, the tower crane is installed on the foot, the high-pile pile cap foundation is cut off, and the high-pile pile cap tower crane is converted into an inner climbing tower crane.

[0020] As a further improvement of the technical scheme of the application, in step S6, the part of the cut-off high-pile pile cap foundation is integrated into the core tube shear wall structure.

[0021] Compared with the prior art, the application has the following advantages:

[0022] The construction method of the super high-rise building tower crane of the present application can install the tower crane after the project starts, without waiting for the excavation of the earthwork to the basement to install the tower crane, and can use the tower crane as a vertical transport tool in the foundation pit support stage and the basement construction stage, thereby reducing the investment of the truck crane and the crawler crane, reducing the construction cost, and accelerating the construction progress; the high-pile pile cap tower crane is made in the core tube elevator shaft of the super high-rise building, the main structure of the high-pile pile cap tower crane is converted into an inner climbing tower crane when it is constructed to a certain layer, avoiding the basement structure part, and the reserved hole of the top plate of each layer of the basement structure does not need to be repaired in the later stage, thereby improving the engineering quality and accelerating the construction progress. The construction method of the super high-rise building tower crane has the characteristics of inserting the tower crane as a vertical transport tool in advance and accelerating the construction progress. BRIEF DESCRIPTION OF DRAWINGS

[0023] The technology of the present application will be further described in detail below in combination with the drawings and specific embodiments:

[0024] Figure 1 is a structure schematic diagram of the positioning of the line in step S1 of the construction method of the super high-rise building tower crane of the present application;

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

[0026] Figure 3 is a structure schematic diagram of the installation of the latticed column in step S2 of the construction method of the super high-rise building tower crane of the present application;

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

[0028] Figure 5 is a structure schematic diagram of the installation of the tower crane and the reinforcing structure in step S3 of the construction method of the super high-rise building tower crane of the present application;

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

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

[0031] Figure 8 is a structure schematic diagram of the conversion of the inner climbing tower crane in step S6 of the construction method of the super high-rise building tower crane of the present application.

[0032] In the drawings:

[0033] 1, core tube area; 2, tower crane foundation; 3, rotary excavating pile hole; 4, lattice column; 5, high-pile pile cap foundation; 6, reinforcing structure; 7, core tube shear wall; 8, foot. DETAILED DESCRIPTION

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

[0035] It should be noted that, unless otherwise specified, when a certain feature is referred to as being "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. In addition, the up, down, left, right and the like used in the present application are only relative to the relative position relationship of the components of the present application 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 hole digging: positioning the core tube area 1 by laying out lines, and positioning the tower crane foundation 2 in the core tube area 1. According to the area of the positioned tower crane foundation 2, a base hole is excavated downward from the original ground level to form a rotary excavating pile hole 3;

[0038] S2: construction of high-pile pile cap foundation 5: making a rotary excavating pile reinforcement cage, fixing the rotary excavating pile reinforcement cage into the assembled lattice column 4 after the rotary excavating pile reinforcement cage is placed into the assembled lattice column 4, hoisting the whole into the rotary excavating pile hole 3, and constructing the tower crane high-pile pile cap foundation 5 on the original ground;

[0039] S3: installation of tower crane: according to the requirements of the tower crane instruction manual, when the tower crane high-pile pile cap foundation 5 is under construction, the tower crane foundation 2 is embedded into the pile cap, and the tower crane is installed on the high-pile pile cap foundation 5. After the installation of the tower crane is completed, the tower crane will be used for foundation pit support engineering and basement engineering, which can speed up the construction progress and reduce the vertical transportation cost.

[0040] S4: construction of support structure: excavating earthwork downward, installing reinforcing structure 6 on the lattice column 4 as the depth of the earthwork excavation, constructing the basement structure, gradually removing the reinforcing structure 6 as the basement structure is constructed, and embedding the lattice column 4 into the core tube shear wall 7 structure to form a support structure, thereby further reinforcing the support structure of the tower crane high-pile pile cap;

[0041] S5: construction of main body structure: when the proposed building enters the main body structure construction, the high-pile pile cap tower crane continues to be used as the main tool for vertical transportation;

[0042] S6: converting the inner climbing tower crane: when the construction of the building to be built reaches a certain number of layers, the foot 8 of the inner climbing tower crane is installed, and the high-pile pile cap tower crane is converted into an inner climbing tower crane. After the construction is completed, the high-pile pile cap foundation 5 is cut off, and the inner climbing tower crane is used as the main tool for vertical transportation of the super high-rise building.

[0043] Among them, the tower crane can be installed after the project starts, without waiting for the installation of the tower crane after the excavation of the earthwork to the base. The tower crane can be used as a vertical transportation tool during the foundation pit support stage and the basement construction stage, reducing the investment in the truck crane and the crawler crane, reducing the construction cost, and accelerating the construction progress. The high-pile pile cap tower crane is made in the core tube elevator shaft of the super high-rise building. When the main structure of the high-pile pile cap tower crane is constructed to a certain number of layers, it is converted into an inner climbing tower crane, avoiding the basement structure part. In the later stage, the reserved holes in the top plate of each layer of the basement structure do not need to be repaired again, improving the engineering quality and accelerating the construction progress. The construction method of the super high-rise building tower crane has the characteristics of inserting the tower crane as a vertical transportation tool in advance to accelerate the construction progress.

[0044] In one embodiment, in step S1, the rotary digging hole forming process is used when excavating the foundation hole.

[0045] In one embodiment, in step S2, the lattice column 4 is constructed to the high-pile pile cap foundation 5 elevation, and the thickness of the high-pile pile cap foundation 5 is greater than 1500mm. When the tower crane high-pile pile cap foundation 5 is constructed on the original ground, the lower end of the high-pile pile cap foundation 5 is sunk into the ground and connected with the lattice column 4. The depth of the lattice column 4 buried in the high-pile pile cap foundation 5 is not less than 850mm. The tower crane foundation 2 adopts a prefabricated assembly type lattice column 4 high-pile pile cap foundation 5 form, avoiding the quality problems and tedious workload of re-repairing the hole in the later stage when the tower crane is installed in the basement area, improving the engineering quality while saving the construction cost.

[0046] In one embodiment, in step S4, the reinforcing structure 6 includes diagonal beams and transverse beams, and the transverse beam reinforcing height is not greater than 2400mm. The earthwork is excavated downward to the elevator shaft bottom plate, and the core tube shear wall 7 structure is the core tube elevator shaft, avoiding the basement structure part. In the later stage, the reserved holes in the top plate of each layer of the basement structure do not need to be repaired again, improving the engineering quality and accelerating the construction progress.

[0047] In one embodiment, in step S6, after the foot 8 is installed, the tower crane is installed on the foot 8, the high-pile pile cap foundation 5 is cut off, and the high-pile pile cap tower crane is converted into an inner climbing tower crane. The cut-off high-pile pile cap foundation 5 part is integrated into the core tube shear wall 7 structure. The tower crane is positioned in the core tube climbing tower area of the building to be built, which prepares for the conversion of the inner climbing tower crane in the main structure construction stage in advance, reduces the workload of the tower crane installation and removal in the main structure construction stage, and accelerates the construction progress.

[0048] Other contents of the construction method of the super high-rise building tower crane are known from the prior art and are not described again here.

[0049] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any modification, equivalent change and modification of the above embodiment according to the technical essence of the present application, without departing from the technical solution content of the present application, still belongs to the scope of the technical solution of the present application.

[0050] In addition, the terms "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0051] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A construction method for a tower crane in a super high-rise building, characterized in that, Includes the following steps: S1: Positioning and excavation: Lay out the positioning of the core tube area, lay out the positioning of the tower crane foundation within the core tube area, and excavate the foundation hole downward from the original ground elevation to form a rotary pile hole according to the positioning of the tower crane foundation area. S2: Construction of high pile foundation: Fabricate rotary drilling pile reinforcement cage, place the rotary drilling pile reinforcement cage into the lattice column and fix it to the lattice column to form a whole, then hoist it into the rotary drilling pile hole, and construct the tower crane high pile foundation on the original ground. 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 1500mm; In step S2, when constructing the tower crane high pile foundation on the original ground, the lower end of the high pile foundation is sunk into the ground and connected to the lattice column, and the depth of the lattice column buried in the high pile foundation is not less than 850mm. S3: Tower crane installation: When constructing the high pile foundation of the tower crane, the tower crane foundation section is embedded in the foundation, and the tower crane is installed on the high pile foundation. After the tower crane is installed, it can be used for foundation pit support engineering and basement engineering. S4: Construction support structure: Excavate the earth downwards, install the reinforcement structure on the lattice column as the earth excavation depth increases, construct the basement structure, and gradually remove the reinforcement structure as the basement structure is constructed, embedding the lattice column into the core tube shear wall structure to form the support structure. In step S4, the reinforcement structure includes diagonal beams and transverse beams, and the reinforcement height of the transverse beams is no more than 2400mm; S5: Main Construction Structure: Once the proposed building enters the main construction phase, the high-pile foundation tower crane will continue to be used as the main tool for vertical transportation. S6: Conversion to internal climbing tower crane: When the construction of the proposed building reaches a certain number of floors, install the legs of the internal climbing tower crane, and at the same time convert the high pile foundation tower crane into an internal climbing tower crane. After the construction is completed, the high pile foundation is cut off, and the internal climbing tower crane is used as the main tool for vertical transportation of the super high-rise building. In step S6, after the support legs are installed, the tower crane is installed on the support legs, the high pile foundation is cut off, and the high pile foundation tower crane is converted into an internal climbing tower crane. In step S6, the removed high-pile foundation portion is integrated into the core tube shear wall structure.

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

3. The construction method of a tower crane for a super high-rise building according to claim 1, characterized in that, In step S4, the earthwork is excavated downwards to the bottom slab of the elevator shaft, and the core tube shear wall structure is the core tube elevator shaft.

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