Support-free mounting method for inclined column of steel structure

Abstract

The invention relates to a support-free mounting method for a steel structure batter post, which is used for mounting the batter post in a frame post outside a core tube, and comprises the following steps: S1, designing a lifting point according to the gravity center of the batter post to be mounted; s2, hoisting equipment is used for carrying out inclined column hoisting through the designed hoisting points; s3, the bottoms of the inclined columns are connected with the bottom columns of the frame columns; s4, the other hoisting equipment is used for hoisting the frame column steel beam; s5, the tops of the inclined columns are connected with the steel beams of the frame columns; s6, butt joint position repair welding; the position of a hoisting point is designed by utilizing the gravity center of the inclined column, a relatively stable state can be kept after hoisting equipment hoists, meanwhile, another hoisting equipment can be used for hoisting a frame column steel beam, and after the frame column steel beam is in place, fixing of the inclined column can be completed only by respectively connecting a frame column bottom column, an inclined column bottom column, an inclined column top column and the frame column steel beam. Installation of the inclined column under the condition that no support is arranged is achieved, the construction complexity is reduced, and the construction efficiency of inclined column installation is improved.

Description

Technical Field

[0001] The invention relates to the technical field of building construction, in particular to a support-free installation method for inclined columns of steel structures. Background Art

[0002] At present, steel structures have been widely used in large buildings. At the same time, the diversified requirements of buildings have led to the emergence of a large number of inclined columns, Y-shaped columns, etc. with relatively high requirements for architectural decoration. The inclined columns have the characteristics of large inclination angle, eccentric center of gravity, and difficulty in measurement and positioning.

[0003] The conventional method of installing inclined columns is to use a support frame for temporary support and fixation, and then unload it after the relevant structures are installed to form a structural system. If this method is used, it is necessary to restore the basement roof under the support frame and weld and dismantle the temporary corbels of the inclined columns, and the construction measures are complicated. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art, provide a method for installing steel structure inclined columns without support, and solve the problem of complicated construction measures for installing inclined columns in the prior art.

[0005] To achieve the above object, the present invention provides a method for installing a steel structure oblique column without support, which is used for installing an oblique column in a frame column outside a core tube, and comprises the following steps:

[0006] S1. Design the hanging point according to the center of gravity of the inclined column to be installed;

[0007] S2. Use lifting equipment to lift inclined columns through designed lifting points;

[0008] S3, the bottom of the inclined column is connected to the bottom column of the frame column;

[0009] S4. Use another lifting equipment to lift the frame column steel beam;

[0010] S5. Connect the top of the inclined column with the steel beam of the frame column;

[0011] S6, welding at the butt joint;

[0012] S7. The lifting equipment is evacuated and the inclined column installation construction is completed.

[0013] By adopting this technical solution and utilizing the center of gravity of the inclined column to design the position of the lifting point, a relatively stable state can be maintained after being lifted by the lifting equipment. At the same time, another lifting equipment can be used to lift the steel beam of the frame column. After they are in place, it is only necessary to connect the bottom column of the frame column, the bottom of the inclined column, the top of the inclined column and the steel beam of the frame column respectively to complete the fixation of the inclined column. After that, the connection is reinforced by welding to achieve the installation of the inclined column without setting up supports. Compared with setting up supports for auxiliary installation of the inclined column, this reduces the complexity of the construction and increases the construction efficiency of the inclined column installation.

[0014] Furthermore, the step S1 also includes calculation of the deformation and strength of the inclined column, and the specific steps are as follows:

[0015] According to the structural characteristics of the inclined column to be installed, a finite element model of the inclined column is obtained;

[0016] Analyze deformation calculation based on the finite element model of inclined column;

[0017] By analyzing the deformation calculation results, it is determined whether the deformation and strength of the inclined column to be installed meet the requirements;

[0018] If both its deformation and strength meet the requirements, construction will continue; if either or all of its deformation and strength do not meet the requirements, the inclined column will be replaced and the deformation analysis and calculation will be re-performed until the deformation and strength of the replaced inclined column meet the requirements, and construction will continue.

[0019] By adopting this technical solution, finite element simulation analysis and deformation calculation are used to carry out deformation and strength tests on the inclined columns before installation and use, so as to ensure the quality of the inclined columns to be used, thereby ensuring the stability of the installed inclined columns in the entire support system.

[0020] Furthermore, the step S1 also includes adjusting the inclined column joint, and the specific steps are as follows:

[0021] Re-measure the three-dimensional coordinates of each corner point at the bottom of the inclined column to be installed;

[0022] Adjust the cross-sectional size of the inclined column bottom joint according to the connection position of the frame column bottom column top.

[0023] By adopting this technical solution, the size of the inclined column docking position can be accurately adjusted to ensure the docking quality with the base column of the frame column on site.

[0024] Furthermore, before step S1, the step also includes the construction of a circumferential operating platform for the frame column base column.

[0025] By adopting this technical solution, an artificial construction plane is established, which facilitates the connection between the base of the inclined column and the base of the frame column.

[0026] Furthermore, step S2 includes finding the center of gravity of the inclined column using computer software, designing the position of the hanging point according to the center of gravity, and connecting the hanging lugs.

[0027] By adopting this technical solution, the center of gravity of the inclined column can be accurately obtained to ensure the stability of the inclined column after it is subsequently lifted.

[0028] Further, the step S4 includes using a hoisting device to hoist a frame steel beam, and connecting two ends of the frame steel beam to the top of the inclined column and the frame column respectively;

[0029] The lifting equipment is used again to lift another frame steel beam, and the two ends of the frame steel beam are connected to the top of the inclined column and the outer wall of the core tube respectively.

[0030] By adopting this technical solution, the frame steel beam serves as the top beam of the frame column itself, forming the overall frame column structure while assisting in the fixation of the diagonal column to form a stable spatial system, ensuring the stability of the entire frame column structure after the diagonal column is installed.

[0031] Compared with the prior art, the present invention has the following beneficial effects:

[0032] 1. By using the center of gravity of the inclined column to design the position of the lifting point, it can maintain a relatively stable state after being lifted by the lifting equipment. At the same time, another lifting equipment can be used to lift the frame column steel beam. After it is in place, it is only necessary to connect the frame column bottom, the inclined column bottom, the inclined column top and the frame column steel beam respectively to complete the fixation of the inclined column. After that, the connection is reinforced by welding to achieve the installation of the inclined column without setting up supports. Compared with setting up supports for auxiliary installation of inclined columns, it reduces the complexity of construction and increases the construction efficiency of inclined column installation.

[0033] 2. Before installing and using the inclined column, finite element simulation analysis and deformation calculation should be carried out to ensure the quality of the inclined column to be used, thereby ensuring the stability of the installed inclined column in the entire support system.

[0034] 3. The two ends of the inclined column are respectively connected to the base column of the frame column and the steel beam of the frame column. After being fixed, a stable space system is formed, which can ensure the stability of the entire frame column structure after the inclined column is installed. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the installation of inclined columns in the method for installing inclined columns of steel structures without support in the present invention;

[0036] Figure 2 It is a schematic diagram of deformation calculation of the inclined column by finite element simulation analysis in the unsupported installation method of the inclined column of the steel structure in the present invention;

[0037] Figure 3 It is a schematic diagram of the construction of the operating platform in the unsupported installation method of the steel structure inclined column in the present invention;

[0038] Figure 4 It is a schematic diagram of the lifting and positioning of the inclined column in the method for installing the inclined column of the steel structure without support in the present invention;

[0039] Figure 5 It is a schematic diagram of the hoisting of the steel beams of the frame columns in the unsupported installation method of the inclined columns of the steel structure in the present invention. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0041] Please see attached Figure 1-5 The present invention provides a method for installing a steel structure oblique column without support, which is used for installing an oblique column in a frame column outside a core tube, and includes the following steps: S1, designing a hanging point according to the center of gravity of the oblique column to be installed; S2, using a hanging device to hang the oblique column through the designed hanging point; S3, connecting the bottom of the oblique column with the bottom of the frame column; S4, using another hanging device to hang the steel beam of the frame column; S5, connecting the top of the oblique column with the steel beam of the frame column; S6, welding the docking position; S7, withdrawing the hanging device, and completing the installation of the oblique column;

[0042] By designing the position of the lifting point based on the center of gravity of the inclined column, it can maintain a relatively stable state after being lifted by the lifting equipment. At the same time, another lifting equipment can be used to lift the frame column steel beam. After it is in place, it is only necessary to connect the frame column bottom, the inclined column bottom, the inclined column top and the frame column steel beam respectively to complete the fixation of the inclined column. After that, the connection is reinforced by welding to achieve the installation of the inclined column without setting up supports. Compared with setting up supports for auxiliary installation of the inclined column, it reduces the complexity of construction and increases the construction efficiency of the inclined column installation.

[0043] For further information, see Figure 2 , the step S1 also includes calculation of the deformation and strength of the inclined column, and the specific steps are as follows: according to the structural characteristics of the inclined column to be installed, a finite element model of the inclined column is obtained; deformation analysis calculation is performed according to the finite element model of the inclined column; by analyzing the deformation calculation results, it is determined whether the deformation and strength of the inclined column to be installed meet the requirements; if both the deformation and strength meet the requirements, the construction is continued; if any or all of the deformation and strength do not meet the requirements, the inclined column is replaced and the deformation analysis calculation is performed again until the deformation and strength of the replaced inclined column meet the requirements, and the construction is continued;

[0044] Finite element simulation analysis and deformation calculation are used to carry out deformation and strength tests on the inclined columns before installation and use, to ensure the quality of the inclined columns to be used, thereby ensuring the stability of the installed inclined columns in the entire support system.

[0045] Furthermore, the step S1 also includes adjustment of the inclined column joint, and the specific steps are as follows: re-measure the three-dimensional coordinates of each corner point of the bottom of the inclined column to be installed; adjust the cross-sectional size of the bottom joint of the inclined column according to the connection position of the bottom column of the frame column and the top of the frame column; accurately adjust the size of the docking position of the inclined column to ensure the docking quality with the bottom column of the frame column on site.

[0046] For further information, see Figure 3 Before step S1, the step also includes building a circumferential operating platform for the bottom column of the frame column to establish an artificial construction plane to facilitate the connection between the bottom of the inclined column and the bottom column of the frame column.

[0047] Furthermore, step S2 includes using computer software to find the center of gravity of the inclined column, designing the position of the lifting point according to its center of gravity, and connecting the lifting lugs; accurately obtaining the center of gravity position of the inclined column to ensure the stability of the inclined column after subsequent lifting.

[0048] For further information, see Figure 5 , the step S4 includes using a hoisting device to hoist a frame steel beam, and connecting the two ends of the frame steel beam to the top of the inclined column and the frame column respectively; using the hoisting device again to hoist another frame steel beam, and connecting the two ends of the frame steel beam to the top of the inclined column and the outer wall of the core tube respectively;

[0049] The frame steel beam is the top beam of the frame column itself. While constituting the overall frame column structure, it also assists in fixing the diagonal columns to form a stable spatial system, ensuring the stability of the entire frame column structure after the diagonal columns are installed.

[0050] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A method for installing steel structure inclined columns without support, used for installing inclined columns in the outer frame columns of the core tube, characterized in that: The steps include: S1. Design the hanging point according to the center of gravity of the inclined column to be installed; S2. Use lifting equipment to lift inclined columns through designed lifting points; S3, the bottom of the inclined column is connected to the bottom column of the frame column; S4. Use another lifting equipment to lift the frame column steel beam; S5. Connect the top of the inclined column with the steel beam of the frame column; S6, welding at the butt joint; S7. The lifting equipment is evacuated and the inclined column installation construction is completed.

2. The method for installing steel structure inclined columns without support according to claim 1, characterized in that: The step S1 also includes calculation of the deformation and strength of the inclined column, and the specific steps are as follows: According to the structural characteristics of the inclined column to be installed, a finite element model of the inclined column is obtained; Analyze deformation calculation based on the finite element model of inclined column; By analyzing the deformation calculation results, it is determined whether the deformation and strength of the inclined column to be installed meet the requirements; If its deformation and strength meet the requirements, continue construction; If any or all of its deformation and strength do not meet the requirements, the inclined column will be replaced and the deformation analysis and calculation will be carried out again until the deformation and strength of the replaced inclined column meet the requirements, and construction will continue.

3. The method for installing a steel structure inclined column without support according to claim 1, characterized in that: The step S1 also includes adjusting the inclined column joint, and the specific steps are as follows: Re-measure the three-dimensional coordinates of each corner point at the bottom of the inclined column to be installed; Adjust the cross-sectional size of the inclined column bottom joint according to the connection position of the frame column bottom column top.

4. The method for installing a steel structure inclined column without support according to claim 1, characterized in that: Before step S1, the step also includes the construction of a circumferential operating platform for the frame column base column.

5. The method for installing steel structure inclined columns without support according to claim 1, characterized in that: The step S2 includes finding the center of gravity of the inclined column by using computer software, designing the position of the hanging point according to the center of gravity, and connecting the hanging lugs.

6. The method for installing steel structure inclined columns without support according to claim 1, characterized in that: The step S4 includes using a lifting device to lift a frame steel beam, and connecting the two ends of the frame steel beam to the top of the inclined column and the frame column respectively; The lifting equipment is used again to lift another frame steel beam, and the two ends of the frame steel beam are connected to the top of the inclined column and the outer wall of the core tube respectively.

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