A tower crane buttress installation construction method

Abstract

The present invention relates to the technical field of construction hoisting machinery installation, and in particular to a tower crane buttress installation construction method. The construction steps are to determine the size of the tower crane buttress component according to the tower crane model, prefabricate the tower crane buttress component in the factory according to the determined size, use BIM simulation software to simulate the stress conditions at the tower crane buttress connection point, pre-embed the buttress connection sleeve at the construction site, install the buttress connection ear plate on the buttress connection sleeve, install the buttress connection rod on the buttress connection ear plate, install the tower crane body, and connect and fix the buttress connection rod to the tower crane body. Use BIM to simulate the stress and structural installation of the tower crane buttress, assist in designing a reasonable tower crane buttress connection method, avoid the problem of uneven stress or insufficient acceptance strength, and avoid overlapping and colliding with construction components to affect normal construction operations, combine the buttress structure with the construction of the building body, and reduce the impact of the installation and disassembly process of the buttress components on the quality of the building.

Description

Technical Field

[0001] The invention relates to the technical field of construction hoisting machinery installation, and in particular to a tower crane buttress installation construction method. Background Art

[0002] Tower crane, also known as "tower crane", is the most commonly used lifting equipment on construction sites. It is formed by stacking and connecting standard sections from the ground or construction platform. It is used to lift construction materials such as steel bars, wooden slats, concrete, steel pipes, etc. The current development of super high-rise buildings is relatively complete. During the construction of high-rise and super high-rise buildings, the height of the tower crane is also raised in order to adapt to the construction requirements of high-rise buildings. A tower crane that is too high has reduced stability and is prone to tilting and collapse.

[0003] At present, the stability of tower crane lights is improved by connecting the tower crane to the construction wall of high-rise buildings through connectors. The load at the connection point is large, and the ear plate attached to the wall of the tower crane mainly bears the force perpendicular to the plane of the ear plate and the force parallel to the plane of the ear plate. The connection form of the existing tower crane buttress is a single structure stress, which may easily lead to the situation that the building cannot bear this part of the load. The installation form is a temporary setting and installation on site, and the overall stability cannot be controlled. Summary of the invention

[0004] In order to provide a tower crane buttress method with a reasonable design and reduce the rework phenomenon in construction, the present invention provides a tower crane buttress installation construction method.

[0005] A tower crane buttress installation construction method provided by the present invention adopts the following technical solution:

[0006] A tower crane buttress installation construction method comprises the following construction steps:

[0007] S1: Determine the size of the tower crane buttress components according to the tower crane model, and prefabricate the tower crane buttress components in the factory according to the determined size;

[0008] S2: Use BIM simulation software to simulate the stress conditions at the connection points of the tower crane buttresses. During the simulation process, adjust the position of the buttress connection points to finally determine that the stress at the buttress connection points is uniform and reasonable;

[0009] S3: Pre-buried buttress connection sleeves are installed at the construction site according to the buttress connection point locations determined by simulation test results;

[0010] S4: Install the buttress connection ear plate on the buttress connection sleeve;

[0011] S5: Install the buttress connecting rod on the buttress connecting ear plate;

[0012] S6: Install the tower crane body and connect and fix the buttress connecting rod to the tower crane body.

[0013] By adopting the above technical solution, BIM is used to simulate the force and structural installation of the tower crane buttress, and to assist in the design of a reasonable tower crane buttress connection method, it is possible to avoid problems such as uneven force or insufficient strength, as well as overlapping and colliding with construction components that affect normal construction operations. The buttress connection sleeves are pre-buried, and the buttress structure is combined with the construction of the main building to achieve the integrity and strength of the building construction and reduce the impact on the quality of the building caused by the installation and disassembly process of the buttress components.

[0014] Preferably, the tower crane buttress components in step S1 include buttress connecting ear plates, buttress connecting rods, buttress connecting sleeves and fixing bolts.

[0015] By adopting the above technical solution, the buttress connecting ear plate is used to provide an installation point for connecting the building structure, the buttress connecting rod is used to connect the tower crane and the building to bear the tension, the buttress connecting sleeve is used to fix the buttress connecting ear plate to the building structure, and the fixing bolts are used to connect various structural members.

[0016] Preferably, the tower crane buttress connection points in step S2 include vertical connection points of the vertical structure and horizontal connection points of the transverse structure, and the stress conditions include the force direction and magnitude of the buttress connection points when gravity load, vibration load, wind load and temperature load act together.

[0017] By adopting the above technical solution, the vertical connection points of the vertical structure and the horizontal connection points of the transverse structure are installed from two directions to adapt to different attached building structures. At the same time, the tower crane is provided with restraint forces in two directions, so that the tower crane can be installed stably in all directions. The gravity load, vibration load, wind load and temperature load simulate several situations that may occur in the environment and have a greater impact on the stress, thereby reducing the interference of special circumstances during actual installation and use.

[0018] Preferably, the specific construction steps of the pre-buried buttress connecting sleeve in step S3 are:

[0019] S3.1: Tie-down of reinforcement bars in building walls;

[0020] S3.2: Weld the buttress connection sleeve to the tied steel bars according to the designed position of the buttress connection point;

[0021] S3.3: Seal both ends of the buttress connection sleeve and cast the wall as a whole;

[0022] S3.4: Clean the inside and surface of the buttress connection sleeve and seal the opening of the buttress connection sleeve with a patch.

[0023] By adopting the above technical scheme, the buttress connecting sleeve is pre-buried to reduce damage to the building surface and structure, improve the installation accuracy of the buttress connecting sleeve, and weld the buttress connecting sleeve to the steel bar to further improve the installation stability of the buttress connecting sleeve. Sealing both ends of the buttress connecting sleeve is conducive to reducing the pollution of the buttress connecting sleeve caused by wall construction.

[0024] Preferably, the design installation positions of the buttress connection points include structural columns, structural shear walls and floor slabs, the structural columns include horizontal tension fixing points and vertical tension fixing points, the structural shear walls include vertical shear force fixing points, and the floor slabs include horizontal shear force fixing points.

[0025] By adopting the above technical solution, combining different building structures and using different connection methods, it not only conforms to the building installation form and maximizes the use of the building structure, but also meets the multi-directional requirements for the fixing force of the tower crane.

[0026] Preferably, the order of connecting and installing the structural columns, structural shear walls and buttress connection points on the floor slab with the tower crane body is first the buttress connection points on the floor slab, and then the buttress connection points on the structural columns and structural shear walls.

[0027] By adopting the above technical solution, the buttress connection points on the floor slab are easier to install and have a higher stress resistance, which makes it easier to fix and position the tower crane and facilitate the installation of the buttress connection points on the subsequent structural columns and structural shear walls.

[0028] Preferably, the buttress connecting sleeve is an inner straight-through pipe, and the welding point between the buttress connecting sleeve and the wall reinforcement is welded with a water stop plate.

[0029] By adopting the above technical solution, the straight-through pipe is convenient for manual installation, and the welding water stop plate treatment makes the buttress connecting sleeve more firmly installed in the wall, and also provides a larger contact range for welding.

[0030] Preferably, when the building wall reinforcement is tied in step S3.1, the designed position of the buttress connection point described in step S3.2 is encrypted.

[0031] By adopting the above technical solution, the density treatment of the wall reinforcement is beneficial to improving the force-bearing capacity of the buttress connection points and alleviating the cracking of the building structure caused by the tension of the buttress connection points.

[0032] Preferably, the buttress connecting ear plate in step S4 includes a wall plate, a vertical plate and a rib plate, and the installation of the buttress connecting ear plate and the buttress connecting sleeve is to fix the wall plate and the buttress connecting sleeve by bolts, and the installation of the buttress connecting ear plate and the buttress connecting rod in step S5 is to fix the vertical plate and the buttress connecting rod by bolts.

[0033] By adopting the above technical solution, the wall panels are used to be close to the building structure for easy installation and fixation, the vertical panels are used to be convenient for connecting the buttress connecting rods, and the ribs are used to strengthen the tensile strength between the wall panels and the vertical panels.

[0034] Preferably, when the buttress connecting rod is connected and fixed to the tower crane body in step S6, two buttress connection points, one horizontally fixed and one vertically fixed, are simultaneously connected to the same connection point on the tower crane body.

[0035] By adopting the above technical solution, the same connection point includes both horizontally fixed and vertically fixed connection points, thereby improving the fixing stability of the connection point in multiple directions.

[0036] In summary, the present invention has the following beneficial technical effects:

[0037] 1. Use BIM to simulate the stress and structural installation of tower crane buttresses, assist in designing a reasonable tower crane buttress connection method, avoid uneven stress or insufficient strength, and avoid overlapping and colliding with construction components, affecting normal construction operations, pre-embed buttress connection sleeves, combine the buttress structure with the construction of the main building, achieve the integrity and strength of the building construction, and reduce the impact of the installation and disassembly process of the buttress components on the quality of the building.

[0038] 2. The buttress connecting ear plate is used to provide an installation point for connecting the building structure. The buttress connecting rod is used to connect the tower crane and the building to bear the tension. The buttress connecting sleeve is used to fix the buttress connecting ear plate to the building structure. The fixing bolts are used to connect various structural members. The vertical connection points of the vertical structure and the horizontal connection points of the transverse structure are installed from two directions to adapt to different attached building structures. At the same time, the tower crane is provided with restraints in two directions, so that the tower crane can be installed stably in all directions. The gravity load, vibration load, wind load and temperature load simulate several situations that may have a greater impact on the force in the environment, so as to reduce the interference of special circumstances during the actual installation and use.

[0039] 3. The buttress connection sleeve is pre-buried to reduce damage to the building surface and structure and improve the installation accuracy of the buttress connection sleeve. The buttress connection sleeve is welded to the steel bar to further improve the installation stability of the buttress connection sleeve. Blocking both ends of the buttress connection sleeve is conducive to reducing the pollution of the wall construction to the buttress connection sleeve. Different connection methods are adopted in combination with different building structures, which not only conforms to the building installation form and maximizes the use of the building structure, but also meets the multi-directional requirements of the tower crane's fixing force. The buttress connection point on the floor is easier to install and has a higher stress degree, which is convenient for fixing and positioning the tower crane and facilitating the installation of the buttress connection points on the subsequent structural columns and structural shear walls. The straight-through pipe is convenient for manual installation. The welding of water stop plate treatment makes the buttress connection sleeve more firmly installed in the wall and provides a larger contact range for welding. The dense treatment of the wall steel bars is conducive to improving the force-bearing capacity of the buttress connection point and slowing down the cracking of the building structure due to the tension of the buttress connection point.

[0040] 4. The wall panels are used to fit closely to the building structure for easy installation and fixation; the vertical panels are used to connect to the buttress connecting rods for easy installation; the ribs are used to strengthen the tensile strength between the wall panels and the vertical panels; the same connection point includes both horizontal and vertical fixed connection points to improve the fixing stability of the connection points in multiple directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the installation structure of the buttress connecting ear plate of the present invention.

[0042] Description of reference numerals:

[0043] 1. Buttress connecting sleeve, 2. Buttress connecting ear plate, 22. Wall plate, 23. Vertical plate, 21. Rib plate, 3. Buttress connecting rod, 4. Fixing bolt, 5. Structural column. DETAILED DESCRIPTION

[0044] The following is combined with Figure 1 The present invention is described in further detail.

[0045] Embodiment 1:

[0046] The embodiment of the present invention discloses a tower crane buttress installation construction method, comprising the following construction steps:

[0047] S1: Determine the size of the tower crane buttress components according to the tower crane model, and prefabricate the tower crane buttress components in the factory according to the determined size;

[0048] S2: Use BIM simulation software to simulate the stress conditions at the connection points of the tower crane buttresses. During the simulation process, adjust the position of the buttress connection points to finally determine that the stress at the buttress connection points is uniform and reasonable;

[0049] S3: pre-embed the buttress connection sleeve 1 at the construction site according to the buttress connection point position determined by the simulation experiment result;

[0050] S4: Install the buttress connecting ear plate 2 on the buttress connecting sleeve 1;

[0051] S5: Install the buttress connecting rod 3 on the buttress connecting ear plate 2;

[0052] S6: Install the tower crane body, and connect and fix the buttress connecting rod 3 to the tower crane body.

[0053] Embodiment 2:

[0054] On the basis of Example 1, add:

[0055] The specific construction steps of the pre-buried buttress connecting sleeve 1 in step S3 are as follows:

[0056] S3.1: Tie-down of reinforcement bars in building walls;

[0057] S3.2: Weld the buttress connection sleeve 1 to the tied steel bars according to the designed position of the buttress connection point;

[0058] S3.3: Block both ends of the buttress connecting sleeve 1 and cast the wall as a whole;

[0059] S3.4: Clean the inside and surface of the buttress connecting sleeve 1, and use a patch to seal the opening of the buttress connecting sleeve 1.

[0060] The diameter of the buttress connection sleeve 1 is 2~3mm larger than the diameter of the embedded bolt

[0061] 28 days after the concrete pouring is completed, the structural strength of the tower crane buttress position will be confirmed. The tower crane buttress components can only be installed after the structural concrete strength reaches 100% of the original design strength.

[0062] The design installation positions of the buttress connection points include structural columns 5, structural shear walls and floor slabs. The structural columns 5 include horizontal tension fixing points and vertical tension fixing points, the structural shear walls are vertical shear fixing points, and the floor slabs are horizontal shear fixing points.

[0063] The order of connecting and installing the structural columns 5, the structural shear walls and the buttress connection points on the floor slab with the tower crane body is first the buttress connection points on the floor slab, then the structural columns 5 and the buttress connection points on the structural shear walls.

[0064] The buttress connecting sleeve 1 is an inner straight-through pipe, and the welding place between the buttress connecting sleeve 1 and the wall reinforcement is welded with a water stop plate.

[0065] When the building wall reinforcement is tied in step S3.1, the designed position of the buttress connection point in step S3.2 is encrypted.

[0066] Embodiment 3:

[0067] On the basis of Example 1, add:

[0068] In step S1, the tower crane buttress component includes a buttress connecting ear plate 2, a buttress connecting rod 3, a buttress connecting sleeve 1 and a fixing bolt 4.

[0069] In step S2, the tower crane buttress connection points include vertical connection points of the vertical structure and horizontal connection points of the transverse structure, and the stress conditions include the force direction and magnitude of the buttress connection points when gravity load, vibration load, wind load and temperature load act together.

[0070] In step S4, the buttress connecting ear plate 2 includes a wall plate 22, a vertical plate 23 and a rib plate 21. The installation of the buttress connecting ear plate 2 and the buttress connecting sleeve 1 is to fix the wall plate 22 and the buttress connecting sleeve 1 by bolts. In step S5, the installation of the buttress connecting ear plate 2 and the buttress connecting rod 3 is to fix the vertical plate 23 and the buttress connecting rod 3 by bolts.

[0071] In step S6, when the buttress connecting rod 3 is connected and fixed to the tower crane body, two buttress connecting points, one horizontally fixed and one vertically fixed, are simultaneously connected to the same connecting point on the tower crane body.

[0072] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tower crane buttress installation construction method, characterized in that: The construction steps include: S1: Determine the size of the tower crane buttress components according to the tower crane model, and prefabricate the tower crane buttress components in the factory according to the determined size; S2: Use BIM simulation software to simulate the stress conditions at the connection points of the tower crane buttresses. During the simulation process, adjust the position of the buttress connection points to finally determine that the stress at the buttress connection points is uniform and reasonable; S3: pre-embed the buttress connection sleeve (1) at the construction site according to the buttress connection point position determined by the simulation experiment result; S4: Installing the buttress connection ear plate (2) on the buttress connection sleeve (1); S5: Installing the buttress connecting rod (3) on the buttress connecting ear plate (2); S6: Install the tower crane body, and connect and fix the buttress connecting rod (3) to the tower crane body; The specific construction steps of the pre-buried buttress connecting sleeve (1) in step S3 are as follows: S3.1: Tie-down of reinforcement bars in building walls; S3.2: Weld the buttress connection sleeve (1) to the tied steel bars according to the designed position of the buttress connection point; S3.3: Seal both ends of the buttress connecting sleeve (1) and cast the wall as a whole; S3.4: Clean the inside and surface of the buttress connecting sleeve (1), and use a patch to seal the opening of the buttress connecting sleeve (1); The design installation position of the buttress connection point includes a structural column (5), a structural shear wall and a floor slab, the structural column (5) includes a horizontal tension fixing point and a vertical tension fixing point, the structural shear wall is a vertical shear fixing point, and the floor slab is a horizontal shear fixing point; In step S4, the buttress connecting ear plate (2) comprises a wall plate (22), a vertical plate (23) and a rib plate (21); the buttress connecting ear plate (2) and the buttress connecting sleeve (1) are installed by connecting the wall plate (22) and the buttress connecting sleeve (1) with bolts; and in step S5, the buttress connecting ear plate (2) and the buttress connecting rod (3) are installed by connecting the vertical plate (23) and the buttress connecting rod (3) with bolts.

2. A tower crane buttress installation construction method according to claim 1, characterized in that: Step S1: The tower crane buttress component comprises a buttress connecting ear plate (2), a buttress connecting rod (3), a buttress connecting sleeve (1) and a fixing bolt (4).

3. A tower crane buttress installation construction method according to claim 1, characterized in that: Step S2: The tower crane buttress connection points include vertical connection points of the vertical structure and horizontal connection points of the transverse structure. The stress conditions include the force direction and magnitude of the buttress connection points when gravity load, vibration load, wind load and temperature load act together. Small.

4. A tower crane buttress installation construction method according to claim 1, characterized in that: The order of connecting and installing the structural columns (5), structural shear walls and buttress connection points on the floor slab with the tower crane body is first the buttress connection points on the floor slab, then the structural columns (5) and buttress connection points on the structural shear walls.

5. A tower crane buttress installation construction method according to claim 1, characterized in that: The buttress connecting sleeve (1) is an inner straight-through pipe, and the welding point between the buttress connecting sleeve (1) and the wall reinforcement is welded with a water stop plate.

6. A tower crane buttress installation construction method according to claim 1, characterized in that: When the building wall reinforcement is tied in step S3.1, the designed position of the buttress connection point in step S3.2 is encrypted.

7. A tower crane buttress installation construction method according to claim 1, characterized in that: Step S6: Buttress When the connecting rod (3) is connected and fixed to the tower crane body, two types of buttress connection points, namely, horizontal fixed and vertical fixed, are simultaneously connected at the same connection point on the tower crane body.

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