High-precision rapid construction method for large frame structure by spatial coordinates

Abstract

The present application relates to a kind of high-precision fast construction methods of large frame structure by space coordinates, comprising the following steps: step one: making installation box;Step two: with installation box as control point, erect plane assembly jig frame;Step three: installation box and longitudinal beam, crossbeam are assembled and welded, and plane frame is formed;Step four: with installation box as control point, with plane control three-dimensional frame size, erect jig frame;Step five: frame assembly.The present application solves the size precision problem of steel column non-through type large cross-section frame module;Frame top is changed into platform assembly, improves work efficiency, also reduces high-altitude operation.

Description

Technical Field

[0001] This invention relates to the field of assembly manufacturing, specifically a method for high-precision and rapid construction of large frame structures using spatial coordinates. Background Technology

[0002] Conventional frame structures connect the frames along their length. Even when frames are stacked, they are only connected at the four right-angled points at the top or bottom. However, this particular frame structure is a welded frame measuring 14 meters x 4.5 meters x 4.5 meters. The top and bottom plates each have eight mounting boxes, and in addition to the four right-angled points, there are four more mounting boxes along the central axis. The mounting box panels have pin holes and high-strength bolt holes. These eight frames are connected to form a single building using base plate pins and high-strength bolts. The pin connectors and the pin holes in the mounting boxes differ in size by only 2 mm. Therefore, not only the external dimensions of the frame but also the axis dimensions of the frame columns are extremely critical: the frame column axis dimensions must be controlled within ±1 mm, the frame length and width within ±2 mm, and the frame height within ±1 mm. Conventional frame manufacturing processes cannot achieve this.

[0003] Through comparison and retrieval:

[0004] The utility model patent "A Prefabricated Frame Steel Structure" (CN20201992986.2) invented by Shandong Zhongmei Luning Heavy Industry Technology Co., Ltd. relates to a prefabricated frame steel structure, the structural type of which is different from that of this application.

[0005] The patent "A Steel Structure Frame" (CN202023122902.2) invented by Jiangsu Lianming Steel Structure Co., Ltd. includes gable columns, intermediate beams, purlins, etc., and its structural form is different from that of this application.

[0006] The invention "A Steel Frame Structure" (CN201922048176.5) by Sino-European International Construction Group Co., Ltd. includes several intermediate beams and several purlins, and its structural form is different from that of this application. Summary of the Invention

[0007] This invention aims to overcome the shortcomings of existing technologies and provide a high-precision and rapid construction method for large frame structures using spatial coordinates, solving the problem of dimensional accuracy control for multi-pin connections in large beam-through frames.

[0008] To solve the above-mentioned technical problems, the present invention is implemented as follows:

[0009] A high-precision and rapid construction method for large frame structures using spatial coordinates, characterized by the following steps:

[0010] Step 1: Make the installation box;

[0011] Step 2: Using the mounting box as a control point, construct a flat assembly jig;

[0012] Step 3: Assemble and weld the mounting box, longitudinal beams, and transverse beams to form a planar frame;

[0013] Step 4: Using the mounting box as a control point, control the dimensions of the three-dimensional frame using a plane, and erect the jig;

[0014] Step 5: Frame assembly.

[0015] The high-precision and rapid construction method for large frame structures using spatial coordinates is characterized in that: in step one, the panel of the mounting box is first made, the panel is an L-shaped panel, and bolt holes and pin holes are opened on the panel; secondly, stiffening plates are installed on each side of the panel.

[0016] The high-precision and rapid construction method for large frame structures using spatial coordinates is characterized in that the panels, bolt holes, and pin holes are cut by laser.

[0017] The high-precision and rapid construction method for large frame structures using spatial coordinates is characterized by the following steps in step two: [Details of step two are missing from the original text.]

[0018] 1) Use H-beams to make the assembly platform. H-beams are set up to form a frame at the main beams. The crossbeams must not be higher than the longitudinal beams to ensure the stability of the platform frame.

[0019] 2) Set a template at the mounting box position. The template size and shape are the same as the mounting box panel. Bolts and pins are set on it. The pin shaft size is 0.5mm smaller than the pin hole.

[0020] 3) Use a level to check the flatness of the platform and template;

[0021] 4) Lay out the main beam axis, outer frame outline, etc. on the jig according to the drawing and mark them with a punch.

[0022] 5) Allowance for shrinkage between adjacent axes: Each weld seam welded to the mounting box needs to have a shrinkage allowance, and there are two weld seams between adjacent axes.

[0023] 6) After the formwork is erected, use a total station or level to check the coordinates of the top center point of the eight formwork panels.

[0024] The method for high-precision and rapid construction of large frame structures using spatial coordinates is characterized in that: in step three, the specific steps for forming the planar frame are as follows:

[0025] 1) The mounting box is placed on the template and fixed by the pin and the positioning pin.

[0026] 2) Assemble the longitudinal and transverse beams, adjust them to meet the requirements, and weld them securely; then assemble the remaining secondary beams;

[0027] 3) After assembly, check the dimensions of each beam and the diagonal dimensions, with an allowable deviation of ±1mm;

[0028] 4) Hoist the planar unit onto the welding platform and weld from the middle to both ends; weld the longitudinal butt weld first, then weld the transverse butt weld. In the flat state, weld the vertical weld first at each butt joint, then weld the planar weld.

[0029] The high-precision and rapid construction method for large frame structures using spatial coordinates is characterized in that: in step four, the specific steps for erecting the formwork are as follows:

[0030] 1) Use H-beams to make the assembly platform. H-beams are set up to form a frame at the main beams. The crossbeams must not be higher than the longitudinal beams to ensure the stability of the platform frame.

[0031] 2) Set a template at the mounting box position. The template is the same as the mounting box panel, and bolts and pins are installed on it;

[0032] 3) Use a level to check the flatness of the platform;

[0033] 4) Lay out the site according to the drawing and make the stake marks, including the axis and outer frame lines;

[0034] 5) After the formwork is erected, use a total station or level to check the coordinates of the top four corners of the eight formwork panels.

[0035] 6) Erect the platform positioning frame, and install uprights at the corresponding positions of the columns and on one side, with the uprights higher than the frame height; the uprights are firmly welded to the platform frame;

[0036] 7) Install a crossbar on the end frame column. The crossbar elevation is lower than the module elevation. Two brackets are installed on the crossbar, and jacks are placed on them. Weld brackets to the column at the module outlet and install movable brackets. When in use, insert the movable brackets into the fixed brackets and install jacks on them.

[0037] 8) Install pads on the left upright at positions corresponding to the upper and lower mounting box panels;

[0038] 9) Draw lines at the module elevation for each column to facilitate adjustment of the overall height during assembly;

[0039] 10) Use a total station or plumb bob to check the verticality of the pole; the allowable deviation is 1mm.

[0040] The high-precision and rapid construction method for large frame structures using spatial coordinates is characterized in that: in step four, 10 uprights with a cross-section of H200 or higher are set at the corresponding positions of the columns and on one side, and the height of the uprights is 200mm higher than the height of the frame; the four uprights on the left and the two columns at the ends are moved 10mm outward from the outer contour line, and the four uprights on the right are moved 200mm outward from the outer contour line.

[0041] The method for high-precision and rapid construction of large frame structures using spatial coordinates is characterized in that: in step five, the specific steps of frame assembly are as follows:

[0042] 1) Assemble the bottom piece and fix it with the pins and positioning pins on the jig;

[0043] 2) Assemble the column. Hoist the square tube column to the designated mounting box position. Adjust the verticality of the column by measuring with a plumb line and infrared light. After adjustment, spot weld the column and the bottom piece firmly.

[0044] 3) Assemble the top piece. After confirming that the dimensions of the upright are correct, assemble the top piece. Use a jack to lift the top piece to the corresponding marked position on the upright of the jig, complete the positioning, and spot weld it firmly after confirming that there are no errors.

[0045] 4) Check the top and two end diagonals. After verifying the frame dimensions, install diagonal bracing at both ends of the frame for reinforcement before lifting it off the jig.

[0046] The beneficial effects of this invention are as follows: As can be seen from the above technical solution, this application provides a high-precision and rapid construction method for large frame structures using spatial coordinates. First, an installation box is fabricated; then, using the installation box as a control point, a planar assembly jig is erected; the installation box, longitudinal beams, and transverse beams are assembled and welded to form a planar frame; finally, using the installation box as a control point, a jig is erected to control the dimensions of the three-dimensional frame; and the frame is assembled. The steel columns in this application are non-continuous; the steel columns and beams are connected together through the installation box, resulting in significantly different process steps.

[0047] This application uses an assembly process based on fixed points, lines, surfaces, and three-dimensional dimensions of the installation box to solve the problem of dimensional accuracy of non-through large-section steel column frame modules; the top of the frame is changed to a platform assembly, which improves work efficiency and reduces high-altitude work; originally, after the components were completed, it took two days to form a frame, but with the method of this application, a frame can be formed in one day, optimizing the process and increasing work efficiency. Attached Figure Description

[0048] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:

[0049] Figure 1 This is a framework model diagram;

[0050] Figure 2 This is a schematic diagram of the mounting box;

[0051] Figure 3 This is a schematic diagram of the node types of columns, beams, and mounting boxes in the frame;

[0052] Figure 4 Schematic diagram of the assembly mold for the mounting box;

[0053] Figure 5 For stiffening plate assembly Figure 1 ;

[0054] Figure 6 For stiffening plate assembly Figure 2 ;

[0055] Figure 7 For stiffening plate assembly Figure 3 ;

[0056] Figure 8 This is a template illustration;

[0057] Figure 9 This is a planar drawing of the jig.

[0058] Figure 10 for Figure 9 Enlarged view at point B in the middle;

[0059] Figure 11 This is a two-dimensional assembly drawing;

[0060] Figure 12 for Figure 11 Enlarged view of point A in the middle;

[0061] Figure 13 Drawings for assembling the jig for the three-dimensional frame;

[0062] Figure 14 for Figure 13 Cross-sectional view.

[0063] Figure 15 This is a flowchart. Detailed Implementation

[0064] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection claimed in this application.

[0065] like Figure 1-4 As shown in Figure 15: A high-precision and rapid construction method for large frame structures using spatial coordinates.

[0066] Step 1: Controlling the assembly dimensions of the mounting box;

[0067] The mounting box panel is laser-cut, and the pin holes and bolt holes on the panel are also laser-cut, with the hole size and axis deviation controlled within 0.05mm. The mounting box stiffening plates are assembled using the panel as a template.

[0068] 2) Welding sequence for the mounting box: First, follow... Figure 5 , Figure 6 Assemble the stiffening plates sequentially, and after welding, proceed according to... Figure 7 Assemble the last two stiffening plates and weld them.

[0069] Step 2: Using the mounting box as a control point, construct a planar assembly jig;

[0070] 1) Use H-beams with a cross section of H500 or higher to make the assembly platform. H-beams should be installed at the main beams to form a frame (the crossbeams should not be higher than the longitudinal beams). Ensure that the platform frame is stable.

[0071] like Figure 8 As shown: 2) Set a template at the position of the mounting box. The template size and shape are the same as the mounting box panel. Set square and round pins on it. The pin size is 0.5mm smaller than the hole.

[0072] 3) Use a level to check the flatness of the platform (±1mm), especially the flatness of the template position;

[0073] 4) Lay out the main beam axis, outer frame outline, etc. on the jig according to the drawing and mark them with a punch.

[0074] 5) Allowance of 3.5mm for shrinkage between adjacent axes: The flange plate of the H-section beam is 12mm thick. The shrinkage allowance for each weld seam welded to the mounting box is calculated as: 1.01 * 2.718282 * 0.0464 * 12 = 1.763mm. There are two weld seams between adjacent axes, therefore a shrinkage allowance of 3.5mm is considered.

[0075] 6) After the formwork is erected, use a total station or level to check the coordinates of the top center point of each of the eight formwork panels. Figure 9 , 10 As shown:

[0076] Step 3: Assemble and weld the mounting box, longitudinal beams, and transverse beams to form a planar frame; such as Figure 11 , 12 As shown;

[0077] 1) The mounting box is placed on the template and fixed by the pin and the positioning pin.

[0078] 2) Assemble the longitudinal and transverse beams, adjust them to meet the requirements, and weld them securely; then assemble the remaining secondary beams;

[0079] 3) After assembly, check the dimensions of each beam and the diagonal dimensions, with an allowable deviation of ±1mm;

[0080] 4) Hoist the planar unit onto the welding platform for welding. Four welders should be arranged to weld symmetrically during welding; weld from the middle to both ends. First weld the longitudinal butt welds, then weld the transverse butt welds. When the unit is laid flat, weld the vertical welds first at each butt joint, then weld the planar welds.

[0081] Step 4: Using the mounting box as a control point, and controlling the dimensions of the three-dimensional frame with a planar control, erect the jig; such as Figure 13 , 14 As shown;

[0082] 1) Use H-beams with a cross section of H500 or higher to make the assembly platform. H-beams should be installed at the main beams to form a frame (the crossbeams should not be higher than the longitudinal beams). Ensure that the platform frame is stable.

[0083] 2) Set a template at the mounting box position. The template is the same as the mounting box panel, and square and round pins are set on it.

[0084] 3) Use a level to check the flatness of the platform; the flatness of the jig frame is ±1mm.

[0085] 4) Lay out the ground pattern according to the drawing and make the pattern punch marks, including the axis and outer frame lines. The axis distances L1, L2, and L3 are according to the design dimensions.

[0086] 5) After the formwork is erected, use a total station or level to check the coordinates of the top four corners of the top surface of the eight formwork panels;

[0087] 6) Erect the platform positioning frame, and install 10 uprights with a cross-section of H200 or higher at the corresponding positions of the uprights and on one side. The height of the uprights should be 200mm higher than the frame height. The four uprights on the left and the two uprights at the ends should be moved 10mm outward from the outer contour line, and the four uprights on the right should be moved 200mm outward from the outer contour line. The uprights should be firmly welded to the platform frame.

[0088] 7) Install a horizontal bar on the end frame column, with the bar elevation 300mm lower than the module elevation. Two brackets are installed on the horizontal bar, on which a jack can be placed. Weld two larger square tube brackets to the column at the module outlet, and install two smaller square tubes as movable brackets, also 300mm from the module elevation. In use, insert the movable brackets into the fixed brackets, and place the jack on top.

[0089] 8) Install a 10mm pad (10*40*200) on the left upright, corresponding to the position of the upper and lower mounting box panels.

[0090] 9) Draw lines at the module elevation for each column to facilitate adjustment of the overall height during assembly;

[0091] 10) Use a total station or plumb bob to check the verticality of the pole; the allowable deviation is 1mm.

[0092] Step 5: Frame assembly;

[0093] 1) Assemble the bottom piece and fix it with the pins and positioning pins on the jig;

[0094] 2) Assemble the column. Hoist the square tube column to the designated mounting box position. Adjust the verticality of the column by measuring with a plumb line and infrared light. After adjustment, spot weld the column and the bottom piece firmly.

[0095] 3) Assemble the top piece. After confirming that the dimensions of the upright are correct, assemble the top piece. Use a jack to lift the top piece to the corresponding marked position on the upright of the jig, complete the positioning, and spot weld it firmly after confirming that there are no errors.

[0096] 4) Check the top and two end diagonals. After verifying the frame dimensions, install diagonal bracing at both ends of the frame for reinforcement before lifting it off the jig.

[0097] This type of large frame joint connects columns, longitudinal beams, and transverse beams using mounting boxes, with the steel columns not penetrating the bottom and top of the frame. Conventional frame assembly involves assembling columns and beams into a single frame before welding. However, this frame relies on mounting boxes connected vertically and horizontally using base plate pins. Therefore, the positioning dimensions of the 16 mounting boxes must be controlled, and the mounting boxes must be used to define points, lines, surfaces, and overall dimensions. First, the dimensions of the mounting box panel holes and their external dimensions must be controlled; then, the linear dimensions and flatness between the mounting boxes in the plane must be controlled; finally, the linear dimensions and flatness or perpendicularity of the mounting boxes on the six sides of the frame must be controlled. Based on this, the manufacturing process is established, and the dimensional accuracy of each component is controlled.

[0098] The above are merely embodiments provided in this application and are not intended to limit this application. Although this application has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A high-precision and rapid construction method for large-scale frame structures using spatial coordinates, characterized in that... Includes the following steps: Step 1: Make the installation box; Step 2: Using the mounting box as a control point, construct a flat assembly jig; Step 3: Assemble and weld the mounting box, longitudinal beams, and transverse beams to form a planar frame; Step 4: Using the mounting box as a control point, control the dimensions of the three-dimensional frame using a plane, and erect the jig; Step 5: Frame assembly.

2. The high-precision and rapid construction method for large-scale frame structures using spatial coordinates as described in claim 1, characterized in that: In step one, the first step is to make the panel of the mounting box. The panel is an L-shaped panel with bolt holes and pin holes. The second step is to install stiffening plates on each side of the panel.

3. The high-precision and rapid construction method for large-scale frame structures using spatial coordinates as described in claim 2, characterized in that: The panel, bolt holes, and pin holes are laser-cut.

4. The high-precision and rapid construction method for large-scale frame structures using spatial coordinates as described in claim 1, characterized in that: In step two, the specific steps for setting up the flat assembly jig are as follows: 1) Use H-beams to make the assembly platform. H-beams are set up to form a frame at the main beams. The crossbeams must not be higher than the longitudinal beams to ensure the stability of the platform frame. 2) Set a template at the mounting box position. The template size and shape are the same as the mounting box panel. Bolts and pins are set on it. The pin shaft size is 0.5mm smaller than the pin hole. 3) Use a level to check the flatness of the platform and template; 4) Lay out the main beam axis and outer frame outline on the jig according to the drawing and mark them with a punch. 5) Allowance for shrinkage between adjacent axes: Each weld seam welded to the mounting box needs to have a shrinkage allowance, and there are two weld seams between adjacent axes. 6) After the formwork is erected, use a total station or level to check the coordinates of the top center point of the eight formwork panels.

5. The high-precision and rapid construction method for large frame structures using spatial coordinates as described in claim 1, characterized in that: In step three, the specific steps for forming the planar frame are as follows: 1) The mounting box is placed on the template and fixed by the pin and the positioning pin. 2) Assemble the longitudinal and transverse beams, adjust them to meet the requirements, and weld them securely; then assemble the remaining secondary beams; 3) After assembly, check the dimensions of each beam and the diagonal dimensions, with an allowable deviation of ±1mm; 4) Hoist the planar unit onto the welding platform and weld from the middle to both ends; weld the longitudinal butt weld first, then weld the transverse butt weld. In the flat state, weld the vertical weld first at each butt joint, then weld the planar weld.

6. The high-precision and rapid construction method for large frame structures using spatial coordinates as described in claim 1, characterized in that: In step four, the specific steps for setting up the formwork are as follows: 1) Use H-beams to make the assembly platform. H-beams are set up to form a frame at the main beams. The crossbeams must not be higher than the longitudinal beams to ensure the stability of the platform frame. 2) Set a template at the mounting box position. The template is the same as the mounting box panel, and bolts and pins are installed on it; 3) Use a level to check the flatness of the platform; 4) Lay out the site according to the drawing and make the stake marks, including the axis and outer frame lines; 5) After the formwork is erected, use a total station or level to check the coordinates of the top four corners of the eight formwork panels. 6) Erect the platform positioning frame, and install uprights at the corresponding positions of the columns and on one side, with the uprights higher than the frame height; the uprights are firmly welded to the platform frame; 7) Install a crossbar on the end frame column. The crossbar elevation is lower than the module elevation. Two brackets are installed on the crossbar, and jacks are placed on them. Weld brackets to the column at the module outlet and install movable brackets. When in use, insert the movable brackets into the fixed brackets and install jacks on them. 8) Install pads on the left upright at positions corresponding to the upper and lower mounting box panels; 9) Draw lines at the module elevation for each column to facilitate adjustment of the overall height during assembly; 10) Use a total station or plumb bob to check the verticality of the pole; the allowable deviation is 1mm.

7. The high-precision and rapid construction method for large frame structures using spatial coordinates as described in claim 6, characterized in that: In step four, 10 uprights with a cross-section of H200 or higher are installed at the corresponding positions of the uprights and on one side. The height of the uprights is 200mm higher than the height of the frame. The four uprights on the left and the two uprights at the end are moved 10mm outward from the outer contour line, and the four uprights on the right are moved 200mm outward from the outer contour line.

8. The high-precision and rapid construction method for large frame structures using spatial coordinates as described in claim 1, characterized in that: Step five involves the following specific steps for assembling the frame: 1) Assemble the bottom piece and fix it with the pins and positioning pins on the jig; 2) Assemble the column. Hoist the square tube column to the designated mounting box position. Adjust the verticality of the column by measuring with a plumb line and infrared light. After adjustment, spot weld the column and the bottom piece firmly. 3) Assemble the top piece. After confirming that the dimensions of the upright are correct, assemble the top piece. Use a jack to lift the top piece to the corresponding marked position on the upright of the jig, complete the positioning, and spot weld it firmly after confirming that there are no errors. 4) Check the top and two end diagonals. After verifying the frame dimensions, install diagonal bracing at both ends of the frame for reinforcement before lifting it off the jig.

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