Rapid and accurate construction method of individual units in modular box-type building

Abstract

The application is a kind of fast and accurate construction method of unit individual in modular box building, which comprises preparing a first jig, a second jig and a third jig, the first jig is used for assembling between the column and the connecting box, the second jig is used for assembling between the column with the connecting box and the longitudinal beam, and the third jig is used for connecting between the side structure and the cross beam; the column and the connecting box are assembled on the first jig; the column is connected with the longitudinal beam through the connecting box on the second jig to form the two side structures of the unit individual; the two side structures formed by the column and the longitudinal beam are connected with the upper and lower cross beams through the connecting box on the third jig to form the complete structure of the unit individual. The jig assembly can reduce the assembly time, ensure the size accuracy and improve the work efficiency; as long as similar components, batch production can be carried out; the welding shrinkage is considered during assembly; after the steel column is assembled, the movable baffle is removed, the steel column is taken out for welding, and the overall size accuracy is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of steel structure installation technology, specifically a method for the rapid and precise construction of individual units in modular box-type buildings. Background Technology

[0002] Modular box-type buildings are typically constructed by stacking and assembling multiple unit modules. Since individual unit modules are relatively large, a beam-column structure is used as the supporting framework. The stacking and assembly of unit modules are achieved through prefabricated connections using connecting boxes at the beam-column joints. Therefore, the installation accuracy of the connecting boxes directly affects the positional accuracy between unit modules, requiring high-quality workmanship. Current unit module manufacturing processes involve separately fabricating beams, columns, and connecting boxes, then assembling them into a frame. However, due to the large size and relatively weak rigidity of the unit modules, deformation is highly likely during this process, making dimensional accuracy difficult to control and resulting in low production efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned defects and propose a method for constructing unit individuals in modular box-type buildings that can guarantee production efficiency and connection accuracy.

[0004] To achieve the above objectives, the present invention is implemented as follows:

[0005] A rapid and precise construction method for individual units in a modular box-type building, including...

[0006] Step 1: Prepare the first jig, the second jig, and the third jig. The first jig is used for the assembly between the column and the connecting box, the second jig is used for the assembly between the column with the connecting box and the longitudinal beam, and the third jig is used for the connection between the side structure and the crossbeam.

[0007] Step 2: Assemble the uprights and connecting boxes on the first fixture;

[0008] Step 3: On the second jig, connect the column to the longitudinal beam through the connecting box to form the two sides of the unit individual;

[0009] Step 4: On the third fixture, connect the two side structures formed by the columns and longitudinal beams to the upper and lower horizontal beams by connecting boxes to form a complete structure of the unit.

[0010] In the aforementioned operations, the connections between the box and the columns, longitudinal beams, and transverse beams are all welded.

[0011] The method for rapid and precise construction of unit individuals in the modular box - type building. The first jig includes a bottom jig composed of H - shaped steel and left and right templates arranged on the bottom jig. The left and right templates have the same shape as the panel of the connection box. An infrared projector is arranged between the left and right templates to check whether the plate holes located on the left and right templates are coaxial, and the coaxiality of the two template holes needs to be ensured.

[0012] The method for rapid and precise construction of unit individuals in the modular box - type building. In step 2, two connection boxes are respectively placed on the left and right templates of the first jig, and are temporarily fixed between the left and right templates and the connection boxes by bolts or pins. Columns are arranged on the bottom jig, and both ends of the columns are fixedly connected to the connection boxes located on both sides of the left and right templates.

[0013] The method for rapid and precise construction of unit individuals in the modular box - type building. An activity baffle is arranged between the right template and the connection box. The activity baffle is used to temporarily fill the gap between the connection box and the right template, facilitating the later removal of the columns.

[0014] The method for rapid and precise construction of unit individuals in the modular box - type building. The second jig includes a "day" - shaped bottom jig and connecting ear plates vertically arranged at the cross - nodes. The connecting ear plates are used to temporarily erect and fix the columns with connection boxes.

[0015] The method for rapid and precise construction of unit individuals in the modular box - type building. In step 3, the columns with connection boxes obtained in step 2 are respectively erected on all the connecting ear plates of the second jig and are temporarily fixed by pin shafts. A longitudinal beam is arranged between adjacent columns, and both ends of the longitudinal beam are fixedly connected to the connection boxes on the front and rear columns.

[0016] Among them,

[0017] According to the assembly drawing, the axis and outer - frame contour line of the column are marked with a center punch on the second jig and are re - checked with the position of the connecting ear plate. The flatness of the horizontal plane of the second jig is detected by a level.

[0018] The perpendicularity between the connecting ear plate and the horizontal plane of the second jig is detected by a square to be ±0mm, and then the connecting ear plate is welded and fixed.

[0019] First, each column is set up on the second jig, and the column is fixed to the connecting ear plate with a pin shaft. Then, each longitudinal beam is installed on the second jig, and the perpendicularity between each longitudinal beam and the column and the second jig is detected by a square. After adjustment to be qualified, they are welded and connected.

[0020] The method for rapid and precise construction of individual units in the modular box-type building includes a third fixture comprising a longitudinal pad beam located below the longitudinal beam and a transverse connecting beam located below the longitudinal pad beam. The interval between adjacent longitudinal pad beams is the length of the transverse beam to be installed. An auxiliary support rod is vertically installed on the outside of the vertical pad beam, and the spacing of the auxiliary support rod is the same as the spacing of the columns.

[0021] In the method for rapid and precise construction of individual units in the modular box-type building, step 4 involves placing the two side structures formed by columns and longitudinal beams onto the longitudinal pad beams of the third fixture, temporarily fixing the columns and auxiliary support rods with pins, setting a crossbeam between the two side columns, and connecting the two ends of the crossbeam through the connecting boxes on the two side columns.

[0022] This method has the following advantages:

[0023] 1. Assembly using a jig reduces assembly time, ensures dimensional accuracy, and greatly improves work efficiency. Similar components can be mass-produced.

[0024] 2. Welding shrinkage is taken into account during assembly; after the steel column is assembled, the movable baffle is removed, the steel column is taken out and welded, and the overall dimensional accuracy is guaranteed.

[0025] 3. After the steel columns are welded, they are installed on the platform and fixed with pins. Then, the steel beams are installed on the platform, and all weldable seams are completed on the platform. Next, the individual frame pieces are moved apart for welding. Finally, all the assembled individual frame pieces are assembled as a whole. This method is suitable for mass production and ensures product size and operational safety. Attached Figure Description

[0026] Figure 1 This is a process flow diagram of the present invention.

[0027] Figure 2 This is a schematic diagram of the first fixture in use.

[0028] Figure 3 This is a schematic diagram of a single-sided structure of a unit module.

[0029] Figure 4 This is a schematic diagram of the third type of fixture. Detailed Implementation

[0030] The present invention will be further illustrated below through specific embodiments.

[0031] A rapid and precise construction method for individual units in a modular box-type building, including...

[0032] Step 1: Prepare the first jig, the second jig, and the third jig. Among them, the first jig is used for the assembly between the column and the connection box, the second jig is used for the assembly between the column with the connection box and the longitudinal beam, and the third jig is used for the connection between the side structure and the cross beam;

[0033] Step 2: Assemble the column and the connection box on the first jig;

[0034] Step 3: Connect the column to the longitudinal beam through the connection box on the second jig and form the two-side structures of the unit individual;

[0035] Step 4: On the third jig, connect the two-side structures formed by the column and the longitudinal beam to the upper and lower cross beams through the connection box to form the complete structure of the unit individual;

[0036] Among them, in the above operations, the connection box is welded to the column, the longitudinal beam, and the cross beam.

[0037] The method for quickly and accurately constructing the unit individual in the modular box-type building. The first jig includes a bottom jig composed of H-shaped steel and left and right templates arranged on the bottom jig. The left and right templates have the same panel shape as the connection box; an infrared projector is arranged between the left and right templates to check whether the plate holes located on the left and right templates are coaxial, and the coaxiality of the two template holes needs to be ensured.

[0038] The method for quickly and accurately constructing the unit individual in the modular box-type building. In Step 2, place two connection boxes on the left and right templates of the first jig respectively, and temporarily fix them between the left and right templates and the connection box by bolts or pins. Set a column on the bottom jig, and the two ends of the column are fixedly connected to the connection boxes located on both sides of the left and right templates respectively.

[0039] The method for quickly and accurately constructing the unit individual in the modular box-type building. An activity baffle is arranged between the right template and the connection box. The activity baffle is used to temporarily fill the gap between the connection box and the right template to facilitate the later removal of the column.

[0040] The method for quickly and accurately constructing the unit individual in the modular box-type building. The second jig includes a "day"-shaped bottom jig and connection ear plates vertically arranged at the cross nodes. The connection ear plates are used to temporarily erect and fix the column with the connection box.

[0041] The method for quickly and accurately constructing the unit individual in the modular box-type building. In Step 3, erect the columns with the connection boxes obtained in Step 2 on all the connection ear plates of the second jig and temporarily fix them with pins. Set a longitudinal beam between adjacent columns, and the two ends of the longitudinal beam are fixedly connected to the connection boxes on the front and rear columns respectively;

[0042] in,

[0043] According to the assembly drawings, mark the axis and outline of the column on the second jig and verify them with the location of the connecting ear plate; use a level to check the flatness of the horizontal surface of the second jig.

[0044] Use a square to check the perpendicularity of the connecting ear plate to the horizontal plane of the second fixture to ±0mm before welding and fixing the connecting ear plate.

[0045] First, set up each column on the second jig, fix the column to the connecting ear plate with pins, then install each longitudinal beam on the second jig, use a square to check the verticality between each longitudinal beam, column and the second jig, and weld the connection after adjustment.

[0046] The method for rapid and precise construction of individual units in the modular box-type building includes a third fixture comprising a longitudinal pad beam located below the longitudinal beam and a transverse connecting beam located below the longitudinal pad beam. The interval between adjacent longitudinal pad beams is the length of the transverse beam to be installed. An auxiliary support rod is vertically installed on the outside of the vertical pad beam, and the spacing of the auxiliary support rod is the same as the spacing of the columns.

[0047] In the method for rapid and precise construction of individual units in the modular box-type building, step 4 involves placing the two side structures formed by columns and longitudinal beams onto the longitudinal pad beams of the third fixture, temporarily fixing the columns and auxiliary support rods with pins, setting a crossbeam between the two side columns, and connecting the two ends of the crossbeam through the connecting boxes on the two side columns.

[0048] This method has the following advantages:

[0049] 1. Assembly using a jig reduces assembly time, ensures dimensional accuracy, and greatly improves work efficiency. Similar components can be mass-produced.

[0050] 2. Welding shrinkage is taken into account during assembly; after the steel column is assembled, the movable baffle is removed, the steel column is taken out and welded, and the overall dimensional accuracy is guaranteed.

[0051] 3. After the steel columns are welded, they are installed on the platform and fixed with pins. Then, the steel beams are installed on the platform, and all weldable seams are completed on the platform. Next, the individual frame pieces are moved apart for welding. Finally, all the assembled individual frame pieces are assembled as a whole. This method is suitable for mass production and ensures product size and operational safety.

Claims

1. A rapid and precise construction method for individual units in a modular box-type building, characterized by: including Step 1: Prepare the first jig, the second jig, and the third jig. Among them, the first jig is used for the assembly between the column and the connection box; the second jig is used for the assembly between the column with the connection box and the longitudinal beam; the third jig is used for the connection between the two-side structure and the cross beam; Step 2: Assemble the column and the connection box on the first jig; Step 3: Connect the column to the longitudinal beam through the connection box on the second jig and form the two-side structures of the unit individual; Step 4: On the third jig, connect the two-side structures formed by the column and the longitudinal beam to the upper and lower cross beams through the connection box to form the complete structure of the unit individual; In the above operations, the connection between the connection box and the column, the longitudinal beam, and the cross beam is all welded connection; among them, The first jig includes a bottom jig composed of H-shaped steel and left and right templates arranged on the bottom jig. The left and right templates have the same panel shape as the connection box; an infrared projector is arranged between the left and right templates to check whether the plate holes located on the left and right templates are coaxial, and the coaxiality of the two template holes needs to be ensured; In Step 2, two connection boxes are respectively placed on the left and right templates of the first jig, and are temporarily fixed between the left and right templates and the connection box by bolts or pins. A column is arranged on the bottom jig, and both ends of the column are fixedly connected to the connection boxes located on both sides of the left and right templates; An activity baffle is arranged between the right template and the connection box. The activity baffle is used to temporarily fill the gap between the connection box and the right template to facilitate the later extraction of the column.

2. The method for rapid and precise construction of individual units in a modular box-type building according to claim 1, characterized in that: The second jig includes a "day"-shaped bottom jig and connection ear plates vertically arranged at the cross nodes. The connection ear plates are used to temporarily erect and fix the column with the connection box.

3. The method for rapid and precise construction of individual units in a modular box-type building according to claim 1, characterized in that: In Step 3, the columns with connection boxes obtained in Step 2 are respectively erected on all the connection ear plates of the second jig and temporarily fixed by pins. A longitudinal beam is arranged between adjacent columns, and both ends of the longitudinal beam are fixedly connected to the connection boxes on the front and rear columns; Among them, According to the assembly drawing, the axis and the outer frame contour line of the column are marked with a punch on the second jig and are rechecked with the position where the connection ear plate is located; use a level to detect the flatness of the horizontal plane of the second jig; Use a square to detect the perpendicularity of the connection ear plate to the horizontal plane of the second jig at ±0mm and then weld and fix the connection ear plate; First, erect each column on the second jig, fix the column and the connection ear plate with a pin, then install each longitudinal beam on the second jig, use a square to detect the perpendicularity between each longitudinal beam and the column and the second jig, and weld and connect after adjustment is qualified.

4. The method for rapid and precise construction of individual units in a modular box-type building according to claim 1, characterized in that: The third jig includes a longitudinal cushion beam located below the longitudinal beam and a transverse connecting beam located below the longitudinal cushion beam. The interval between adjacent longitudinal cushion beams is the length of the cross beam to be installed. Auxiliary support rods are vertically arranged outside the vertical cushion beam, and the spacing of the auxiliary support rods is the same as the spacing of the columns.

5. The method for rapid and precise construction of individual units in a modular box-type building according to claim 1, characterized in that: In Step 4, the two-side structures formed by the column and the longitudinal beam are respectively placed on the longitudinal cushion beams of the third jig, and the column is temporarily fixed to the auxiliary support rod by a pin. A cross beam is arranged between the two-side columns and both ends of the cross beam are connected through the connection boxes on the two-side columns.

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