A method for reinforcing a grid block lifting by assembling a support jig frame

Abstract

The application discloses a method for reinforcing a net rack block lifting by using an assembled support jig frame, and comprises the following steps: installing the assembled support jig frame on a floor; assembling the net rack structure in blocks on the assembled support jig frame, and supporting the lower chord spherical nodes of the net rack structure by the assembled support columns; removing the assembled support columns below the lifting hanging points, installing steel pull rods between the lower chord spherical nodes below the lifting hanging points and the adjacent support columns of the lower chord spherical nodes, installing the assembled support column fixing hoops for fixing the assembled support columns and the lower chord spherical nodes supported thereby on the assembled support columns, and installing the steel pull rods between the support ends of the adjacent assembled support columns to form the assembled support jig frame reinforcing system; performing the net rack structure block lifting operation; installing the embedded rod members between the block net rack structures after the lifting; and unloading the assembled support jig frame reinforcing system and the net rack lifting system. The method is simple in operation, low in cost, can significantly improve the stability during the net rack lifting, and has a good application prospect.

Description

Technical Field

[0001] This invention relates to the field of space frame lifting construction technology, and specifically to a method for reinforcing a space frame by using an assembled support frame for segmented lifting. Background Technology

[0002] Large-span space frame structures, due to their complex shapes and enormous areas, are generally constructed using a method of assembling on the floor, lifting individual blocks, and splicing them together at high altitude to form a whole.

[0003] Regarding the stress analysis of the segmented lifting of the space frame, under normal circumstances, when the segmented space frame is lifted after the floor assembly is completed, the change in boundary constraints is inconsistent with the overall stress characteristics of the space frame, which will cause changes in the internal forces of the space frame members, or even reverse the signs of the internal forces. At the same time, the deformation of the segmented unit increases. When the space frame is lifted into place and the members are replaced, the increased deformation of the space frame is permanent (irreversible).

[0004] Conventional practice involves increasing the size of members with reversed internal force signs or stress ratios exceeding specifications. If the adjusted stress ratio does not exceed the specification, the structure is considered safe. However, under the overall stress condition of the space frame, increasing member sizes is unnecessary. When local members are replaced with stiffer members, internal forces redistribute, potentially causing stress ratios in adjacent members to exceed limits. Furthermore, the increased deformation of the space frame cannot be reversed. To avoid such problems, space frame structures are constructed using traditional methods, employing in-situ assembly with full-span support frames instead of lifting techniques. This significantly increases construction costs and time.

[0005] Therefore, developing a simple and easy-to-operate method for segmented lifting of the space frame that is not prone to deformation is of great practical significance. Summary of the Invention

[0006] Due to the aforementioned defects in the existing technology, the present invention provides a simple and easy-to-operate method for lifting space frame sections that is less prone to deformation, thus solving the problems of existing methods for lifting space frame sections that are prone to deformation, overly complicated to operate, and too costly.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A method for reinforcing a space frame by segmenting and lifting it using an assembled support frame includes the following steps:

[0009] (1) Install the assembly support frame on the floor. The assembly support frame includes multiple assembly support columns perpendicular to the floor. The assembly support columns are connected to each other by steel tie rods located between the assembly support columns. The presence of the steel tie rods can ensure the stability of the assembly support frame.

[0010] (2) Assemble the space frame structure in sections on the assembly support frame, and assemble the lower chord ball joint of the space frame structure with the support columns;

[0011] (3) Remove the assembled support column below the lifting point, install steel tie rods between the lower chord ball joint below the lifting point and the adjacent support column, install the assembled support column fixing clamps on the assembled support column to fix the assembled support column to its supported lower chord ball joint, and install steel tie rods between the support ends of adjacent assembled support columns to form an assembled support frame reinforcement system;

[0012] (4) Carry out the segmented lifting operation of the space frame structure. After the assembly support frame reinforcement system is lifted off the ground, the assembly support frame reinforcement system participates in the stress. On the one hand, it can effectively avoid the problem of reversed signs of the members, and on the other hand, it can effectively reduce the deformation of the space frame structure during the segmented lifting stage.

[0013] (5) After being lifted into place, insert rods are installed between the segmented space frame structures;

[0014] (6) Unload the assembly support frame reinforcement system and the space frame lifting system.

[0015] The present invention relates to a method for reinforcing a space frame by using a modular support frame during the segmented lifting process. This method utilizes the support frame from the space frame assembly process, which is modified and used during lifting to achieve reinforcement throughout the process, until the high-altitude insertion members are installed and the space frame is assembled as a whole. The temporary reinforcement support frame is then removed, ensuring safety during the segmented lifting process and guaranteeing the safety of the structure under normal use. This method fully utilizes the modular support frame, simplifying the operation and significantly reducing costs. Furthermore, the auxiliary components used during construction can be reused, indicating promising application prospects.

[0016] As a preferred technical solution:

[0017] As described above, a method for reinforcing a space frame by segmenting and lifting using an assembled support frame is described, wherein the assembled support column includes a column rod, a fixing lug clamp, and a closing limiting plate;

[0018] One end of the column is provided with a closed limiting plate and both ends of the column are fitted with fixing ear plate hoops. Four fixing ear plates are fixed on the fixing ear plate hoops in a cross shape, and fixing ear holes are opened on the fixing ear plates.

[0019] The method described above for reinforcing a segmented space frame using an assembled support frame involves installing steel tie rods between the lower chord ball joint and the adjacent support column below the lifting point. Specifically, this involves welding connecting lugs to the lower chord ball joint, installing a tensioner at one end of the steel tie rod, and then attaching the end of the steel tie rod away from the tensioner and the end of the tensioner away from the steel tie rod to the fixing lugs and connecting lugs of the fixing lug hoop on the adjacent support column away from the space frame structure, respectively. The tensioner is then adjusted to bring the steel tie rod under tension. The presence of the tensioner improves the overall structural strength and facilitates later disassembly.

[0020] As described above, a method for reinforcing a space frame by segmenting and lifting it using an assembled support frame is described, wherein the assembled support column fixing clamp includes a clamp body and a column fixing lug.

[0021] The column fixing lug is fixed to the clamp body, and the clamp body is wrapped and fixed to the lower chord ball node. The column fixing lug is fixed together with the fixing lug on the fixing lug of the column near the end of the space frame structure by bolts.

[0022] The method described above for reinforcing a space frame using a modular support jig involves installing steel tie rods between the support ends of adjacent modular support columns. Specifically, a tensioner is installed at one end of the steel tie rod. The end of the steel tie rod furthest from the tensioner and the end of the tensioner furthest from the steel tie rod are respectively hooked onto the fixing lugs of the fixing lugs on the support ends of the adjacent modular support columns. The tensioner is then adjusted to bring the steel tie rods to a taut state. The presence of the tensioner improves the overall structural strength and facilitates later disassembly.

[0023] As described above, a method for reinforcing a space frame by segmenting and lifting it using an assembled support frame includes a patching member for the upper chord, a patching member for the lower chord, and a patching web member for the space frame. The upper chord, lower chord, and web members of adjacent space frames are connected into a single unit by the patching member for the upper chord, the patching member for the lower chord, and the patching web member for the space frame.

[0024] The above-described method for reinforcing a space frame by segmenting and lifting it using an assembly support frame involves the following steps for unloading the assembly support frame reinforcement system: adjusting the tensioner to loosen the steel tie rod, and then sequentially removing the tensioner, steel tie rod, and assembly support column.

[0025] The above technical solution is only one feasible technical solution of the present invention. The scope of protection of the present invention is not limited thereto. Those skilled in the art can reasonably adjust the specific design according to actual needs.

[0026] The above invention has the following advantages or beneficial effects:

[0027] (1) The method of using the assembly support frame to reinforce the segmented lifting of the space frame of the present invention effectively utilizes the assembly support frame of the space frame, which is simply transformed into a space frame reinforcement structure to participate in the lifting force of the space frame. It is easy to operate and has low cost.

[0028] (2) The method of using the assembly support frame for reinforcement in the segmented lifting of the space frame of the present invention can effectively avoid the problem of reversed signs of the members and effectively reduce the deformation of the space frame structure during the segmented lifting stage.

[0029] (3) The method of using the assembled support frame to reinforce the grid structure in the present invention saves a lot of materials and greatly reduces construction costs compared with the full-span support frame system, and has good application prospects. Attached Figure Description

[0030] The invention, its features, shape, and advantages will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference numerals denote like parts throughout the drawings. The drawings are not drawn to scale; the emphasis is on illustrating the gist of the invention.

[0031] Figure 1 Plan view of the modular assembly of the space frame;

[0032] Figure 2 Longitudinal sectional view of the modular assembly of the space frame;

[0033] Figure 3 A cross-sectional view of the modular assembly of the space frame;

[0034] Figure 4 Plan view of the space frame segmentation and lifting;

[0035] Figure 5 A cross-sectional view of the longitudinal assembly support frame system for the segmented lifting of the space frame;

[0036] Figure 6 A cross-sectional view of the transverse assembly support frame system for segmented lifting of the space frame;

[0037] Figure 7 Longitudinal cross-sectional view of the space frame sections being lifted into place;

[0038] Figure 8 A cross-sectional view of the space frame sections being lifted into place;

[0039] Figure 9 Plan view for inserting members into the space frame after lifting it into place;

[0040] Figure 10 Longitudinal cross-section of the space frame lifting into place, steel tie rod unloading, and lifting device unloading;

[0041] Figure 11A cross-sectional view showing the installation of members during the lifting of the space frame, the unloading of steel tie rods, and the unloading of the lifting device.

[0042] Figure 12 Plan view of the dismantling of the space frame assembly support frame reinforcement system and lifting system;

[0043] Figure 13 Longitudinal cross-sectional view of the dismantling of the space frame assembly support frame reinforcement system and lifting system;

[0044] Figure 14 Cross-sectional view of the dismantling of the space frame assembly support frame reinforcement system and lifting system;

[0045] Figure 15 and 16 These are schematic diagrams from different perspectives showing the assembly and support column fixing clamps;

[0046] Figure 17 and 18 These are schematic diagrams of the assembled support columns from different perspectives;

[0047] Among them, 1 is the upper chord ball joint, 2 is the upper chord member, 21 is the upper chord post-installed supplementary member, 3 is the lower chord ball joint, 4 is the lower chord member, 41 is the lower chord post-installed supplementary member, 5 is the web member, 51 is the post-installed supplementary web member, 6 is the space frame support, 7 is the lifting point, 8 is the lifting device, 9 is the lifting steel strand, 10 is the lifting bracket, 11 is the steel pipe column, 12 is the floor, 13 is the assembled support column, 131 is the column rod, 132 is the fixing ear plate hoop, 133 is the closed limiting plate, 14 is the steel tie rod, 15 is the assembled support column fixing clamp, 151 is the clamp body, 152 is the column fixing ear plate, 16 is the tensioner, 17 is the tensioner unloading, 18 is the lifting device unloading, 19 is the connecting ear plate, A, B, C, and D are the longitudinal axis numbers of the steel pipe column, and X and Y are the transverse axis numbers of the steel pipe column. Detailed Implementation

[0048] The structure of the present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0049] Example 1

[0050] A method for reinforcing a space frame by segmenting and lifting it using an assembled support frame includes the following steps:

[0051] (1) Install an assembly support frame on the floor 12. The assembly support frame includes multiple assembly support columns 13 perpendicular to the floor. The assembly support columns 13 are connected together by steel tie rods 14 located between the assembly support columns 13.

[0052] Assembled support column 13 Figure 17 and18 As shown, it includes a column rod 131, a fixing ear plate hoop 132, and a closed limiting plate 133. One end of the column rod 131 is provided with a closed limiting plate 133, and both ends of the column rod 131 are fitted with fixing ear plate hoops 132. Four fixing ear plates are fixed on the fixing ear plate hoop 132 in a cross shape, and fixing ear holes are opened on the fixing ear plates.

[0053] (2) Assemble the space frame structure in sections on the assembly support frame, and assemble the lower chord ball node 1 of the space frame structure with the support columns. At this time, as shown... Figures 1-3 As shown;

[0054] (3) Remove the assembled support column 13 below the lifting point 7, and install a steel tie rod 14b between the lower chord ball node 1 and the adjacent support column below the lifting point 7 (specifically: weld the connecting ear plate 19 on the lower chord ball node 1, install a tensioner 16 on one end of the steel tie rod 14b, and hook the end of the steel tie rod 14b away from the tensioner 16 and the end of the tensioner 16 away from the steel tie rod 14b onto the fixing ear plate and connecting ear plate 19 of the fixing ear plate hoop 132 of the adjacent support column of the lower chord ball node 1 away from the space frame structure, and then adjust the tensioner 16 to make the steel tie rod 14b taut). Install an assembled support column fixing clamp 15 on the assembled support column to fix the assembled support column to its supported lower chord ball node 1 (the assembled support column fixing clamp 15 is as follows). Figure 15 and 16 As shown, the system includes a clamp body 151 and a column fixing ear plate 152. The column fixing ear plate 152 is fixed on the clamp body 151. The clamp body 151 is wrapped and fixed on the lower chord ball node 1. The column fixing ear plate 152 is fixed together with the fixing ear plate on the fixing ear plate hoop 132 near the end of the space frame assembly support column by bolts. Steel tie rods 14p are installed between the support ends of adjacent assembly support columns to form an assembly support frame reinforcement system (specifically, a tensioner 16 is installed at one end of the steel tie rod 14p, and the end of the steel tie rod 14p away from the tensioner 16 and the end of the tensioner 16 away from the steel tie rod 14p are respectively hooked onto the fixing ear plate of the fixing ear plate hoop 132 at the support end of the adjacent assembly support column, and then the tensioner 16 is adjusted so that the steel tie rod 14p is in a taut state).

[0055] (4) Perform the segmented lifting operation of the space frame structure. At this time, if... Figures 4-6 As shown;

[0056] (5) Improvement in place (e.g.) Figures 7-8(As shown) After that, insert members (including insert members 21 on the upper chord of the space frame, insert members 41 on the lower chord of the space frame, and insert members 51 on the web of the space frame) are installed between the segmented space frame structures. The upper chord members 2, lower chord members 4, and web members 5 of the adjacent space frames are connected into a whole by the insert members 21 on the upper chord of the space frame, the insert members 41 on the lower chord of the space frame, and the insert members 51 on the web of the space frame. At this time, as shown Figures 9-11 As shown;

[0057] (6) Unload the assembly support frame reinforcement system (specifically: adjust the tensioner to relax the steel tie rod, and then remove the tensioner, steel tie rod, and assembly support column in sequence) and the space frame lifting system. At this time, if Figures 12-14 As shown.

[0058] Verification has shown that the method of using an assembled support frame for reinforcing segmented lifting of the space frame in this invention effectively utilizes the space frame assembly support frame, which is simply transformed into a space frame reinforcement structure to participate in the lifting force of the space frame. The operation is simple and the cost is low. The formation of the assembled support frame reinforcement can effectively avoid the problem of reversed member sign and can effectively reduce the deformation of the space frame structure during the segmented lifting stage. Compared with the full-span support frame system, it saves a lot of materials and greatly reduces construction costs, showing good application prospects.

[0059] Those skilled in the art should understand that variations can be implemented by combining existing technology with the above embodiments, which will not be elaborated here. Such variations do not affect the essence of the present invention, and will not be elaborated here either.

[0060] The preferred embodiments of the present invention have been described above. It should be understood that the present invention is not limited to the specific embodiments described above, and the devices and structures not described in detail should be understood as being implemented in a conventional manner in the art. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention using the methods and techniques disclosed above, or modify them into equivalent embodiments with equivalent changes, without departing from the scope of the present invention. This does not affect the essential content of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the present invention's technical solutions still fall within the protection scope of the present invention.

Claims

1. A method for reinforcing a segmented space frame using an assembled support frame, characterized in that: Includes the following steps: (1) Install the assembly support frame on the floor. The assembly support frame includes multiple assembly support columns perpendicular to the floor. The assembly support columns are connected as one unit by steel tie rods located between the assembly support columns. (2) Assemble the space frame structure in sections on the assembly support frame, and assemble the lower chord ball joint of the space frame structure with the support columns; (3) Remove the assembled support column below the lifting point, install steel tie rods between the lower chord ball joint below the lifting point and the adjacent support column, install the assembled support column fixing clamps on the assembled support column to fix the assembled support column to its supported lower chord ball joint, and install steel tie rods between the support ends of adjacent assembled support columns to form an assembled support frame reinforcement system; (4) Carry out the segmented lifting operation of the space frame structure; (5) After the structure is lifted into place, install the interlocking rods between the segmented space frame structures; (6) Unload the assembly support frame reinforcement system and the space frame lifting system; The assembled support column includes a column rod, a fixing lug clamp, and a closed limiting plate; One end of the column rod is provided with a closed limiting plate and both ends of the column rod are fitted with fixing ear plate hoops. Four fixing ear plates are fixed on the fixing ear plate hoops in a cross shape, and fixing ear holes are opened on the fixing ear plates. The specific operation of installing steel tie rods between the lower chord ball joint below the lifting point and the adjacent support column of the lower chord ball joint is as follows: weld connecting ear plates on the lower chord ball joint, install a tensioner at one end of the steel tie rod, and hang the end of the steel tie rod away from the tensioner and the end of the tensioner away from the steel tie rod on the fixed ear plate hoop of the fixed ear plate hoop of the adjacent support column of the lower chord ball joint away from the space frame structure, respectively. Then adjust the tensioner to make the steel tie rod taut. The specific operation for unloading the assembly support frame reinforcement system is as follows: adjust the tensioner to make the steel tie rod in a relaxed state, and then remove the tensioner, steel tie rod and assembly support column in sequence.

2. The method for reinforcing a segmented space frame using an assembled support frame as described in claim 1, characterized in that, The assembled support column fixing clamp includes a clamp body and a column fixing lug; The column fixing lug is fixed to the clamp body, and the clamp body is wrapped and fixed to the lower chord ball node. The column fixing lug is fixed together with the fixing lug on the fixing lug of the column near the end of the space frame structure by bolts.

3. The method for reinforcing a segmented space frame using an assembled support frame as described in claim 1, characterized in that, The specific operation for installing steel tie rods between the support ends of adjacent assembled support columns is as follows: a tensioner is installed at one end of the steel tie rod, and the end of the steel tie rod away from the tensioner and the end of the tensioner away from the steel tie rod are respectively hooked onto the fixing lugs of the fixing lugs of the support ends of the adjacent assembled support columns. Then the tensioner is adjusted so that the steel tie rod is in a taut state.

4. The method for reinforcing a segmented space frame using an assembled support frame as described in claim 1, characterized in that, The insert members include the upper chord insert members, the lower chord insert members, and the web members of the space frame. The upper chord insert members, the lower chord insert members, and the web members of the adjacent space frames are connected into one unit by the upper chord insert members, the lower chord insert members, and the web members of the space frame.

Images