A column steel structure combined module hoisting centering device and method

Abstract

The application relates to the technical field of building construction, in particular to a hoisting and centering device and method for a steel structure combined module with columns. The centering device comprises a plurality of steel columns, a plurality of steel beams and a plurality of temporary diagonal braces. One end of the steel beam is fixedly connected with the steel column to form a fixed beam-column joint, and the other end of the same steel beam is fixedly connected with another steel column to form an adjustable beam-column joint. One end of the temporary diagonal brace is fixedly connected with the steel column, and the other end of the temporary diagonal brace is fixedly connected with the fixed steel beam and movably connected with the adjustable steel beam. The fixed steel beam is the steel beam which forms the fixed beam-column joint with the same steel column, and the adjustable steel beam is the steel beam which forms the adjustable beam-column joint with the same steel column. Through the application, the position of the multiple columns after hoisting can be quickly and accurately adjusted without changing the main structure, the adjustment efficiency and quality are improved through the cooperation of the adjustable beam-column joint and the detachable temporary diagonal brace.

Description

Technical Field

[0001] This invention relates to the field of building construction technology, and in particular to a hoisting and centering device and method for a steel structure modular assembly with columns. Background Technology

[0002] Modular steel structure construction technology belongs to the subfield of steel structure engineering within the building construction industry. It involves the connection and alignment of beam-column joints during the prefabrication in the factory and overall hoisting process of large, multi-span steel structure modules. This type of structure typically consists of multiple steel columns and intersecting steel beams assembled into a single-story module, with precise alignment between upper and lower modules achieved through hoisting. In actual construction, due to manufacturing deviations, hoisting deformation, and cumulative installation errors, the alignment accuracy of the continuous steel columns between upper and lower floors becomes a key factor restricting construction quality and progress.

[0003] Traditional steel structure modules typically have beam-column joints where the steel columns run vertically through each other, with rigid connections on both sides. This lack of local adjustment mechanisms makes fine-tuning cumbersome and inefficient, and makes it difficult to achieve precise alignment of multiple columns simultaneously. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a hoisting and centering device and method for steel structure modular components with columns. This device enables rapid and precise adjustment of the positions of multiple columns after hoisting without altering the main structure, through the synergistic effect of adjustable beam-column joints and detachable temporary diagonal braces. This improves centering efficiency and quality, while also supporting the reuse of temporary components and reducing construction costs.

[0005] To achieve the above objectives, the embodiments of the present invention provide the following technical solutions: A hoisting and centering device for a steel structure modular assembly with columns includes: multiple steel columns, multiple steel beams, and multiple temporary diagonal braces; one end of each steel beam forms a fixed beam-column node with a steel column, and the other end of the same steel beam forms an adjustable beam-column node with another steel column; one end of each temporary diagonal brace is fixedly connected to a steel column, and the other end of the temporary diagonal brace is fixedly connected to a fixed steel beam and movablely connected to an adjustable steel beam, wherein the fixed steel beam is the steel beam that forms the fixed beam-column node with the same steel column, and the adjustable steel beam is the steel beam that forms the adjustable beam-column node with the same steel column.

[0006] Optionally, the fixed beam-column joint is connected by bolts and round bolt holes.

[0007] Optionally, the adjustable beam-column joint is connected by bolts and elongated bolt holes, the elongated bolt holes being arranged in a horizontal direction.

[0008] Optionally, the temporary diagonal brace is fixedly connected to the steel beam by bolts and round bolt holes, and the temporary diagonal brace is movablely connected to the steel beam by bolts and oblong bolt holes, wherein the oblong bolt holes are arranged in the horizontal direction.

[0009] Optionally, the steel columns are arranged vertically, the steel beams are arranged horizontally, and multiple steel beams and multiple steel columns are intersected to form a ring-shaped frame unit. The frame unit can be repeatedly expanded along both ends of the steel beams to form a grid structure.

[0010] Optionally, the annular frame unit is a rectangular structure, and the frame unit can be repeatedly expanded in two orthogonal directions to form a grid structure.

[0011] Optionally, the grid structure is a grid-like structure.

[0012] Optionally, the grid-shaped structure includes nine steel columns, six transverse main beams, and six longitudinal main beams.

[0013] This invention also provides a centering method for the hoisting and centering device for the steel structure modular assembly with columns as described in Embodiment 1, comprising the following steps: At the assembly site, steel beams, steel columns, and temporary diagonal braces are assembled. One end of the steel beam forms a fixed beam-column node with the steel column, and the other end forms an adjustable beam-column node. One end of the temporary diagonal brace is fixedly connected to the steel column, and the other end is either fixedly connected or movable depending on the type of steel beam being connected. Tighten the bolts at the fixed beam-column joints and fixed connections, while leaving the bolts at the adjustable beam-column joints and movable connections loose. Hoist the steel structure modular unit with columns to the predetermined position, so that the upper steel columns are initially aligned with the lower steel columns; Measure the horizontal positioning deviation of each steel column; The positioning deviations of the steel columns with adjustable beam-column joints and movable connections are adjusted in the horizontal direction to make the positioning deviations of each steel column more consistent. After adjustment, tighten all bolts at adjustable beam-column joints and movable connections; Remove the temporary diagonal bracing.

[0014] Furthermore, during adjustment, the steel columns on both sides are adjusted with the central steel column as the reference. When adjusting the steel column in the horizontal direction, the adjustment value is taken as the average value of the positioning deviation of multiple steel columns in that direction.

[0015] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages: 1. In the centering device of this invention, one end of the steel beam forms a fixed beam-column node with a steel column, while the other end forms an adjustable beam-column node with another steel column. One end of the temporary diagonal brace is fixedly connected to the steel column, while the other end adopts different connection methods depending on the type of steel beam being connected: a fixed connection when connected to a fixed steel beam, and a movable connection when connected to an adjustable steel beam. Through the combination of fixed nodes and adjustable points, and combined with the differentiated connection of the temporary diagonal brace, stable temporary support can be provided for the steel structure module during hoisting. Through the unique beam-column node with one fixed end and one adjustable end, and with the cooperation of the adjustable diagonal brace, the position of the steel column can be adjusted in a controlled manner after positioning, enabling rapid centering adjustment of the steel structure module with columns. This overcomes the centering difficulties caused by installation deviations and hoisting deformation, significantly improves the construction efficiency of steel structures, and shortens the construction cycle.

[0016] 2. High applicability: The beam-column joints and diagonal braces can be specifically designed according to the actual engineering needs, and the positions of adjustable points can be flexibly set according to the steel structure layout.

[0017] 3. In line with the concept of green construction: The adjustable diagonal brace, the node plate and bolts used to connect the diagonal brace and the steel beam in this invention can be used as temporary tooling to a certain extent. After hoisting and assembly, they can be recycled and reused according to actual use. In addition, apart from the above-mentioned adjustable diagonal brace, there are no other additional adjustment devices, which saves materials, processing and installation time, etc., and is in line with the development concept and requirements of green construction.

[0018] Advantages of additional aspects of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In addition, the dimensions or spacing between the components are exaggerated to show the position of each component, and the schematic diagrams are for illustrative purposes only.

[0020] Figure 1 This is a plan view of the beam-column connection node provided in an embodiment of the present invention; Figure 2 yes Figure 1 Sectional view of AA; Figure 3 yes Figure 1 BB section view; In the diagram: 1. Steel column; 2. Longitudinal main beam; 3. Transverse main beam; 4. Adjustable beam-column joint; 5. Fixed beam-column joint; 6. Temporary diagonal brace; 7. Fixed connection; 8. Movable connection; Detailed Implementation It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0021] Example 1 like Figure 1 As shown in the figure, this embodiment proposes a hoisting and centering device for a steel structure modular assembly with columns, which is suitable for two or more spans and situations where there are no diagonal bracings between the columns in the original design.

[0022] like Figure 2 , Figure 3 As shown, one end of a steel beam (longitudinal main beam 2 and transverse main beam 3) forms a fixed beam-column node 5 with a steel column 1, and the other end of the same steel beam forms an adjustable beam-column node 4 with another steel column 1. One end of the temporary diagonal brace 6 is fixedly connected to the steel column 1 7, and the other end of the temporary diagonal brace 6 is fixedly connected to the fixed steel beam 7, and movablely connected to the adjustable steel beam 8. The fixed steel beam is the steel beam that forms the fixed beam-column node 5 with the same steel column 1, and the adjustable steel beam is the steel beam that forms the adjustable beam-column node 4 with the same steel column 1. In this embodiment, the fixed and adjustable steel beams refer to a specific steel column 1. That is, if a steel column 1 forms a fixed beam-column node 5, then the steel beam is a fixed steel beam; if it forms an adjustable beam-column node 4, then the steel beam is an adjustable steel beam. Therefore, the same steel beam can be a fixed steel beam or an adjustable steel beam relative to different steel columns 1.

[0023] One end of the steel beam forms a fixed beam-column node 5 with the steel column 1, and the other end forms an adjustable beam-column node 4 with another steel column 1. This node design of "one end fixed and one end adjustable" breaks the limitation of traditional fully fixed beam-column nodes lacking adjustment space. One end of the temporary diagonal brace 6 is fixedly connected to the steel column 1 7, and the other end is fixedly connected to the fixed steel beam 7 and movablely connected to the adjustable steel beam 8, ensuring that the diagonal brace connection and the beam-column node type are accurately matched.

[0024] During the assembly phase before hoisting, the fixed beam-column node 5 ensures the stability of the module's foundation frame and prevents module deformation during assembly. The adjustable beam-column node 4 provides adjustment margin, allowing for subsequent alignment adjustments. After hoisting into place, if there is an alignment deviation between the upper and lower steel columns 1, the adjustable beam-column node 4 can adjust the relative position of the steel beam and steel column 1 through its own adjustment capability. At the same time, the temporary diagonal brace 6 and the movable connection 8 of the adjustable steel beam can cooperate with the adjustment of the steel column 1 to generate adaptive displacement, while the fixed connection 7 of the temporary diagonal brace 6 and the fixed steel beam provides stable support for the adjustment process, preventing the module from shifting as a whole.

[0025] This structure solves the problems of fixed beam-column joints leading to difficulties in centering and adjustment, and poor module stability during adjustment due to the lack of temporary supports in existing technologies. Specifically, the differentiated connection between the "one-end fixed, one-end adjustable" beam-column joint and the temporary diagonal brace 6 creates a synergistic effect: the fixed part ensures the overall rigidity of the module, while the adjustable part enables precise adjustment. This combination avoids module deformation during adjustment and reduces the need for repeated bolt disassembly, improving centering and adjustment efficiency. Simultaneously, the coordinated work of multiple steel columns 1, steel beams, and diagonal braces enables linked adjustment of multiple steel columns 1, improving the interference problem inherent in traditional single-point adjustments and enhancing the consistency of centering accuracy.

[0026] The temporary diagonal brace 6 can be made of channel steel or other cross-sectional forms that can withstand bending and shear resistance. The fixed beam-column node 5 is connected via bolts and round bolt holes. After the bolts are tightened through the round bolt holes, the relative positions of the steel beam and steel column 1 are precisely fixed, preventing horizontal or vertical displacement. This ensures the stability of the fixed beam-column node 5 and provides a reliable foundation frame for module assembly. During hoisting, the fixed beam-column node 5 can withstand the weight of the module itself and the external forces generated during hoisting, preventing deformation or displacement of the module due to loosening of the fixed nodes.

[0027] The bolt holes of the fixed beam-column node 5 are connected to the adjustable beam-column node 4, which forms a contrast. The fixed part provides a reference for the adjustment of the adjustable part, prevents the overall displacement of the module during the adjustment process, ensures that the adjustment of the adjustable part is always within the preset range, and improves the controllability of the centering adjustment.

[0028] The adjustable beam-column node 4 is connected by bolts and oblong bolt holes, which are arranged horizontally. Compared with round bolt holes, oblong bolt holes have a horizontal length margin. After the bolt passes through the oblong bolt hole, the steel beam and steel column 1 can move relative to each other along the length of the oblong bolt hole when the bolt is not tightened, providing horizontal adjustment space for the centering adjustment of steel column 1.

[0029] The horizontally arranged elongated bolt holes are designed to meet the centering adjustment requirements of steel column 1. During hoisting and centering, the horizontal arrangement of the elongated bolt holes allows for targeted horizontal adjustments without requiring significant modifications to the node structure. Furthermore, the connection between the bolts and the elongated bolt holes allows for fixing the node position simply by tightening the bolts after adjustment, balancing adjustability with stability after fixation and preventing loosening of the node after adjustment.

[0030] The temporary diagonal brace 6 is fixedly connected to the steel beam 7 by bolts and round bolt holes, and the temporary diagonal brace 6 is movablely connected to the steel beam 8 by bolts and oblong bolt holes, with the oblong bolt holes arranged horizontally.

[0031] This differentiated connection design allows the temporary diagonal brace 6 to both provide support and accommodate the adjustment needs of the adjustable steel beam. This avoids problems such as poor module stability during adjustment due to a lack of temporary support, or interference with adjustment caused by the fixed and unadjustable temporary support. The fixed connection 7 between the temporary diagonal brace 6 and the fixed steel beam can withstand the lateral force of the module during hoisting and adjustment, preventing lateral deformation of the module. The movable connection 8 between the temporary diagonal brace 6 and the adjustable steel beam allows the diagonal brace to move synchronously with the adjustable steel beam when the steel column 1 is adjusted, avoiding obstruction of the adjustment by the diagonal brace and ensuring a smooth adjustment process.

[0032] Fixed connection 7 corresponds to fixed beam-column node 5, together forming a stable support system for the module; movable connection 8 corresponds to adjustable beam-column node 4, together providing space for adjustment. The two work together to ensure that the module remains stable during adjustment, while having sufficient adjustment capability.

[0033] The steel columns 1 are arranged vertically, and the steel beams are arranged horizontally. Multiple steel beams and multiple steel columns 1 are intersected to form a ring-shaped frame unit. The frame unit can be repeatedly expanded along both ends of the steel beams to form a grid structure.

[0034] The closed structure of the ring frame unit can distribute the load, making the module more evenly stressed during hoisting and use, and reducing local stress concentration. The frame unit repeatedly expands along both ends of the steel beam to form a grid structure, which can flexibly adjust the size of the steel structure according to the building plan size, and is suitable for steel structure building construction with different spans and areas, thus enhancing the applicability of the device.

[0035] Furthermore, the annular frame unit is a rectangular structure, and the frame unit can be repeatedly expanded in two orthogonal directions to form a grid structure.

[0036] The rectangular frame unit has a regular geometric shape, and the length of each side can be designed according to engineering requirements, which facilitates standardized processing and assembly. It can be extended along two orthogonal directions (i.e., the X direction and the Y direction) to form a regular rectangular grid structure, which is highly compatible with the rectangular plan layout of most buildings.

[0037] The rectangular frame unit design reduces the complexity of modular assembly. The regular shape ensures that the dimensions of each frame unit are uniform, eliminating the need for frequent adjustments to the connection relationships between units during assembly and improving assembly efficiency. Extending in two orthogonal directions, the length and width of the entire steel structure can be flexibly adjusted to meet the needs of different building plan dimensions.

[0038] Furthermore, the grid structure is a grid-like structure. This grid-like structure is formed by combining multiple rectangular frame units, with shared steel columns and beams in the middle. These shared steel columns and beams enhance the structure's resistance to deformation, allowing it to better bear the weight of the module itself and external loads during hoisting, thus reducing module deformation. Simultaneously, the grid-like structure has strong symmetry and a more uniform stress distribution, avoiding structural damage caused by localized stress concentration and extending the module's service life.

[0039] This embodiment takes a 2×2 span steel structure combined module with columns as an example, such as... Figure 1 The diagram illustrates the assembly nodes described above. The grid-shaped structure includes nine steel columns 1, six transverse main beams 3, and six longitudinal main beams 2. From the bottom left to the top right of the grid-shaped structure, the steel columns 1 are arranged in three rows and three columns. The first row of steel columns 1 consists of columns 1-1, 2-3; the second row consists of columns 1-4, 5-6; and the third row consists of columns 1-7, 8-9. The first row of transverse main beams 3 consists of columns 1-1 and 2; the second row consists of columns 1-3 and 4; and the third row consists of columns 1-5 and 6. The first row of longitudinal beams consists of columns 1-1, 2-3; and the second row consists of columns 1-4, 5-6.

[0040] Define the letter axis direction as the X direction and the number axis direction as the Y direction. All steel beams use a fixed node at one end and an adjustable node at the other end. A typical section is AA (e.g., Figure 2 As shown), BB section (as shown) Figure 3 (As shown).

[0041] AA section as shown Figure 2 As shown, the transverse main beam 33 is connected to steel column 15, and the transverse main beam 34 is connected to steel column 16 via fixed nodes. These fixed nodes use round bolt holes and cannot be adjusted after the bolts are tightened. The transverse main beam 33 is connected to steel column 14, and the transverse main beam 34 is connected to steel column 15 via adjustable points. These adjustable points use oblong bolt holes and can be adjusted when the bolts are not tightened. Steel column 15 and transverse main beam 33 are connected via fixed diagonal braces, and steel column 15 and transverse main beam 34 are connected via adjustable diagonal braces. The connection point between the adjustable diagonal brace and steel column 15 uses round bolt holes and is a fixed node; the connection point between the adjustable diagonal brace and transverse main beam 34 uses oblong bolt holes and is an adjustable point.

[0042] BB cross-section as shown Figure 3As shown, longitudinal main beam 26 is connected to steel column 19, and longitudinal main beam 23 is connected to steel column 16 via adjustable points. These adjustable points use elongated bolt holes, allowing adjustment when the bolts are not tightened. Longitudinal main beam 26 is also connected to steel column 16, and longitudinal main beam 23 is connected to steel column 13 via fixed points. These fixed points use round bolt holes, and cannot be adjusted after the bolts are tightened. Steel column 16 and longitudinal main beam 26 are connected via fixed diagonal braces, and steel column 16 and longitudinal main beam 23 are connected via adjustable diagonal braces. The connection point between the adjustable diagonal brace and steel column 16 uses round bolt holes and is a fixed point; the connection point between the adjustable diagonal brace and longitudinal main beam 23 uses elongated bolt holes and is an adjustable point.

[0043] In this device, the adjustable points of the beams and columns and the adjustable diagonal braces work together to facilitate the centering and positioning of steel column 1. The number of bolts used at the nodes, the bolt hole size, and the cross-section of the diagonal braces can all be calculated based on the specific project. At the same time, the aforementioned working principle and process are only examples. In actual projects, adaptive adjustments can be made according to the specific layout of the steel structure modules and the actual positioning and centering situation, which will not be elaborated here.

[0044] Example 2 This embodiment provides a centering method for the hoisting and centering device for the steel structure modular assembly with columns as described above, including the following steps: In the assembly site, steel beams, steel columns 1 and temporary diagonal braces 6 are assembled. One end of the steel beam forms a fixed beam-column node 5 with the steel column 1, and the other end forms an adjustable beam-column node 4. One end of the temporary diagonal brace 6 is fixedly connected to the steel column 1 7, and the other end is either fixedly connected 7 or movable connected 8 depending on the type of steel beam to be connected. Tighten the bolts at the fixed beam-column node 5 and the fixed connection 7, while leaving the bolts at the adjustable beam-column node 4 and the movable connection 8 loose. Hoist the steel structure module with columns to the predetermined position, so that the upper steel column 1 and the lower steel column 1 are initially aligned; Measure the horizontal positioning deviation of each steel column 1; Based on the positioning deviation, the steel column 1 with adjustable beam-column node 4 and movable connection 8 is adjusted in the horizontal direction to make the positioning deviation of each steel column 1 more consistent. After adjustment, tighten all bolts at adjustable beam-column nodes 4 and movable connections 8; Remove temporary diagonal bracing 6.

[0045] The alignment method includes steps such as assembly, bolt status setting, preliminary alignment during hoisting, deviation measurement, adjustment, bolt tightening, and removal of diagonal braces. From a process perspective, the assembly step ensures that all components of the device are combined according to the preset connection relationships, laying the foundation for subsequent alignment adjustments; the bolt status setting distinguishes between fixed and adjustable connections; tightening the bolts of fixed beam-column node 5 and fixed connection 7 ensures module rigidity, while leaving adjustable connection bolts loose to allow for adjustment; preliminary alignment during hoisting brings the upper and lower steel columns 1 close to their centering positions, reducing subsequent adjustment workload; deviation measurement provides data for adjustment, avoiding blind adjustments; the adjustment step specifically corrects deviations, ensuring accurate positioning of steel column 1; tightening the bolts secures the adjusted position, ensuring node stability; and removing the diagonal braces completes the construction and allows for brace recovery.

[0046] This method features a clear workflow, avoiding the problems of chaotic adjustment processes and low efficiency and poor accuracy caused by a lack of standardized operations. The clearly defined connection types during assembly provide a clear target for subsequent adjustments, preventing uncertainty during the adjustment process. The deviation measurement steps ensure that adjustments are based on actual data, reducing errors caused by experience-based judgment. The adjustment steps target adjustable connections, avoiding damage to the fixed beam-column node 5 and improving the safety and reliability of the adjustments. The bolt tightening and brace removal steps ensure the stability of the module structure after construction and also enable the recovery of the braces, conforming to the concept of green construction.

[0047] Furthermore, during adjustment, the steel columns 1 on both sides are adjusted with the central steel column 1 as the reference. When adjusting the steel column 1 in the horizontal direction, the adjustment value is taken as the average value of the positioning deviation of multiple steel columns 1 in that direction.

[0048] From the perspective of adjustment strategy, the central steel column 1 is located at the center of the modular structure, and is less affected by the surrounding components, with high positional stability. Using it as a reference can reduce adjustment errors caused by reference offset, and provide a clear reference point for adjustment. Construction personnel do not need to repeatedly search for the reference, thus improving adjustment efficiency.

[0049] The average value of the adjustment can balance the deviation of each steel column 1, so that the adjustment range of each steel column 1 in this direction tends to be consistent, and avoids the structural deformation or the increase of the deviation of adjacent steel columns 1 due to the excessive adjustment range of a single steel column 1.

[0050] The specific construction process is as follows: At the assembly site, all steel beams, steel columns, and diagonal braces are assembled according to the aforementioned nodes. Bolts at fixed nodes should be tightened, while bolts at adjustable points should be loose. Diagonal braces provide temporary support during the hoisting of the entire layer of column-supported steel structure modules. After the upper multi-column modules are hoisted into place and the upper steel columns are initially aligned with the lower steel columns, this device is used for fine-tuning. A specific operational procedure is illustrated below: By adjusting the measures, priority is given to ensuring that the centering positions of steel columns 2, 5, and 8 in the X direction and steel columns 4, 5, and 6 in the Y direction meet the acceptance standards when the upper steel structure is hoisted. The positioning deviations of steel columns 1, 4, and 7 in the X direction were measured on site and recorded as x1, x4, and x7, respectively. The bolts between steel column 1 and transverse main beam 1, steel column 4 and transverse main beam 3, and steel column 7 and transverse main beam 5 were all loose. Jacks, hand hoists, etc., were used to adjust steel columns 1, 4, and 7 in the X direction. The adjustment value was taken as the average of x1, x4, and x7.

[0051] Similarly, the positioning deviations of steel columns three, six, and nine in the X direction are measured on-site and recorded as x3, x6, and x9, respectively. The bolts between transverse main beam two and steel column two and adjustable braces, transverse main beam four and steel column five and adjustable braces, and transverse main beam six and steel column eight and adjustable braces are all loose. Jacks, chain hoists, etc., can be used to simultaneously adjust steel columns three, six, and nine in the X direction. The adjustment value is taken as the average of x3, x6, and x9. During the adjustment process, transverse main beams two, four, and six move with steel columns three, six, and nine, respectively. At this point, the positioning adjustment of all steel columns in the X direction is complete.

[0052] After the positioning adjustment in the X direction is completed, the positioning deviations of steel columns 1, 2, and 3 in the Y direction are measured on site and recorded as y1, y2, and y3. The bolts between longitudinal main beam 1 and steel column 4 and adjustable brace, longitudinal main beam 2 and steel column 5 and adjustable brace, and longitudinal main beam 3 and steel column 6 and adjustable brace are all loose. Jacks, hand hoists, etc. can be used to adjust steel columns 1, 2, and 3 in the Y direction at the same time. The adjustment value is taken as the average value of y1, y2, and y3. During the adjustment process, longitudinal main beams 1, 2, and 3 move with steel columns 1, 2, and 3 respectively.

[0053] Similarly, the positioning deviations of steel columns 7, 8, and 9 in the Y direction are measured on-site and recorded as y7, y8, and y9, respectively. The bolts between steel column 7 and longitudinal main beam 4, steel column 8 and longitudinal main beam 5, and steel column 9 and longitudinal main beam 6 are all loose. Jacks, hand-operated hoists, etc., can be used to simultaneously adjust steel columns 7, 8, and 9 in the Y direction, and the adjustment value is taken as the average of y7, y8, and y9. At this point, the positioning adjustment of all steel columns in the Y direction is complete.

[0054] After all the steel columns have been positioned and adjusted, tighten the adjustable bolts connecting the beams and columns. Assemble the upper and lower steel columns according to the original design nodes. The diagonal braces can be removed and reused later.

[0055] This invention achieves rapid and precise centering of steel structure modular units with columns by modifying traditional beam-column joints and adding reusable diagonal braces. With the implementation of this device, the traditional "beam-first, column-later" construction method for steel structure modules is transformed into a new column-supported steel structure modular unit hoisting system, improving construction efficiency.

[0056] While the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of the present invention are still within the scope of protection of the present invention.

Claims

1. A hoisting and centering device for a steel structure modular assembly with columns, characterized in that, include: Multiple steel columns, multiple steel beams, and multiple temporary diagonal braces; One end of the steel beam forms a fixed beam-column node with the steel column, and the other end of the same steel beam forms an adjustable beam-column node with another steel column. One end of the temporary diagonal brace is fixedly connected to the steel column, and the other end of the temporary diagonal brace is fixedly connected to a fixed steel beam and movablely connected to an adjustable steel beam. The fixed steel beam is the steel beam that forms the fixed beam-column node with the same steel column, and the adjustable steel beam is the steel beam that forms the adjustable beam-column node with the same steel column.

2. The hoisting and centering device for the steel structure modular assembly with columns as described in claim 1, characterized in that, The fixed beam-column joint is connected by bolts and round bolt holes.

3. The hoisting and centering device for the steel structure modular assembly with columns as described in claim 1, characterized in that, The adjustable beam-column joint is connected by bolts and oblong bolt holes, which are arranged horizontally.

4. The hoisting and centering device for the steel structure modular assembly with columns as described in claim 1, characterized in that, The temporary diagonal brace is fixedly connected to the steel beam by bolts and round bolt holes, and the temporary diagonal brace is movablely connected to the steel beam by bolts and oblong bolt holes, with the oblong bolt holes arranged horizontally.

5. The hoisting and centering device for the steel structure modular assembly with columns as described in claim 1, characterized in that, The steel columns are arranged vertically, and the steel beams are arranged horizontally. Multiple steel beams and multiple steel columns are intersected to form a ring-shaped frame unit. The frame unit can be repeatedly expanded along both ends of the steel beams to form a grid structure.

6. The hoisting and centering device for the steel structure modular assembly with columns as described in claim 5, characterized in that, The ring-shaped frame unit is a rectangular structure, and the frame unit can be repeatedly expanded in two orthogonal directions to form a grid structure.

7. The hoisting and centering device for a steel structure modular assembly with columns as described in claim 6, characterized in that, The grid structure is a grid-like structure.

8. The hoisting and centering device for a steel structure modular assembly with columns as described in claim 7, characterized in that, The grid-shaped structure includes nine steel columns, six transverse main beams, and six longitudinal main beams.

9. A method for centering a column-supported steel structure modular hoisting and centering device as described in any one of claims 1-8, comprising the following steps: At the assembly site, steel beams, steel columns, and temporary diagonal braces are assembled. One end of the steel beam forms a fixed beam-column node with the steel column, and the other end forms an adjustable beam-column node. One end of the temporary diagonal brace is fixedly connected to the steel column, and the other end is either fixedly connected or movable depending on the type of steel beam being connected. Tighten the bolts at the fixed beam-column joints and fixed connections, while leaving the bolts at the adjustable beam-column joints and movable connections loose. Hoist the steel structure modular unit with columns to the predetermined position to initially align the upper and lower steel columns; Measure the horizontal positioning deviation of each steel column; The positioning deviations of the steel columns with adjustable beam-column joints and movable connections are adjusted in the horizontal direction to make the positioning deviations of each steel column more consistent. After adjustment, tighten all bolts at adjustable beam-column joints and movable connections; Remove the temporary diagonal bracing.

10. The centering method as described in claim 9, characterized in that, During adjustment, the steel columns on both sides are adjusted with the central steel column as the reference. When adjusting the steel column in the horizontal direction, the adjustment value is taken as the average value of the positioning deviation of multiple steel columns in that direction.

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