Assembly type heavy load support
By using the segmented structure and high-strength bolt connections of the prefabricated heavy-duty support, the problems of low erection efficiency and material waste of heavy-duty support are solved, achieving efficient erection and material reuse, and ensuring the stability and safety of the support.
Patent Information
- Application Number
- CN202422673133.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-03
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-11-03
AI Technical Summary
In existing bridge construction, the erection efficiency of heavy-duty supports is low and the material reuse rate is low. The welding and cutting of steel pipes cause damage, affecting construction efficiency and wasting materials.
The prefabricated heavy-duty support adopts a segmented structure and high-strength bolt connection, which enables rapid assembly and disassembly of the support segments, avoids welding damage, and improves the material reuse rate.
It improves the erection efficiency of heavy-duty supports and the reuse rate of materials, while ensuring the vertical load-bearing capacity and shear resistance of the supports, thus ensuring construction safety and the integrity of materials.
Smart Images
Figure CN223548427U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of bridge construction technology and relates to a prefabricated heavy-duty support. Background Technology
[0002] During the installation and cast-in-place construction of bridge box girders, scaffolding is often used as the lower support. This type of scaffolding is a heavy-duty scaffolding that requires strong load-bearing capacity. It is generally constructed using large-diameter steel pipes. During the scaffolding construction, the steel pipes are usually lifted one by one to the installation position, and horizontal bracing and diagonal bracing are welded between adjacent steel pipe piles, resulting in low construction efficiency. The large-diameter steel pipes are manufactured with fixed lengths. When constructing the scaffolding, the steel pipes need to be cut or extended according to the height of the scaffolding. When dismantling the scaffolding, the steel pipes, horizontal bracing and diagonal bracing are cut and disassembled. The disassembled materials are damaged, the reuse rate is low, and a large amount of waste is caused. Summary of the Invention
[0003] The purpose of this invention is to address the above-mentioned problems by providing a prefabricated heavy-duty support structure to improve the erection efficiency of heavy-duty supports and the reuse rate of materials.
[0004] The technical solution of this utility model is as follows:
[0005] A prefabricated heavy-duty support frame, characterized in that it comprises at least two support segments joined vertically; each support segment includes four steel columns arranged at the four vertices of a square, with flanges welded to both ends of each of the four steel columns. Two diagonally opposite steel columns have two pairs of lugs welded to their outer walls at both ends, with the included angle between the two pairs of lugs being 90°. The other two diagonally opposite steel columns have three pairs of lugs welded to their outer walls at both ends, with the included angle between the middle pair of lugs and the other two pairs being 45°. Four horizontal connecting rods are connected between the upper and lower ends of the four steel columns, aligning with the four sides of a square. A horizontal diagonal rod is connected between the upper and lower ends of the two steel columns with three pairs of lugs at both ends. The struts are connected by a lateral diagonal brace between the upper end of one steel column and the lower end of another steel column on each side of the square. Each horizontal connecting rod, horizontal diagonal brace, and lateral diagonal brace has a connecting plate welded longitudinally at both ends, and the connecting plates are connected to two pairs of opposing ear plates on the two steel columns by high-strength bolts. The upper ends of the four steel columns of each support segment are connected to the lower ends of the four steel columns of the support segment above by flanges and high-strength bolts. The horizontal diagonal brace of each support segment and the horizontal diagonal brace of the support segment above form a cross in space. The lateral diagonal brace on one side of each support segment and the lateral diagonal brace on the same side of the support segment above form a figure-eight shape in space.
[0006] This utility model adopts a segmented assembly structure, which can improve the erection efficiency of heavy-duty supports. The steel columns of each segment and various connecting rods adopt an assembled connection structure, which does not damage the materials and can improve the material reuse rate. Through the reasonable layout of horizontal and lateral diagonal braces, the vertical load bearing capacity and shear resistance of the support can be guaranteed, ensuring the stability and safety of the support structure. Attached Figure Description
[0007] Figure 1 This is a side view of the structure of this utility model;
[0008] Figure 2 This is a schematic diagram of the planar structure of this utility model;
[0009] Figure 3 This is a side view of a support segment of this utility model;
[0010] Figure 4 This is a schematic diagram of the planar structure of a support segment of this utility model. Detailed Implementation
[0011] like Figure 1 , Figure 2 As shown, this utility model includes at least two bracket segments that are connected vertically.
[0012] like Figure 3 , Figure 4 As shown, each support segment includes four steel columns 1 arranged at the four vertices of a square. Flanges 2 are welded to both ends of the four steel columns. Two pairs of ear plates 3 are welded to the outer walls of the two diagonally opposite steel columns, with an included angle of 90°. Three pairs of ear plates are welded to the outer walls of the two diagonally opposite steel columns, with the included angle between the middle pair of ear plates and the other two pairs of ear plates being 45°. Four horizontal connecting rods 4 are connected between the upper and lower ends of the four steel columns according to the four sides of the square. A horizontal diagonal brace 5 is connected between the upper and lower ends of the two steel columns with three pairs of ear plates at both ends. A lateral diagonal brace 6 is connected between the upper end of one steel column and the lower end of another steel column on each side of the square. Connecting plates 7 are welded to both ends of each horizontal connecting rod 4, horizontal diagonal brace 5, and lateral diagonal brace 6 along the longitudinal direction. The connecting plates are connected to the two pairs of opposite ear plates on the two steel columns by high-strength bolts 8.
[0013] like Figure 1 , Figure 2 As shown, the upper ends of the four steel columns 1 of each support segment are connected to the lower ends of the four steel columns of the support segment above through flanges 2 and high-strength bolts 8. The horizontal diagonal braces 5 of each support segment and the horizontal diagonal braces 5 of the support segment above form a cross in space. The lateral diagonal braces 6 on one side of each support segment and the lateral diagonal braces 6 on the same side of the support segment above form a figure-eight shape in space.
[0014] Compared with the integral support structure using welding, this utility model, due to the prefabricated connection structure of the support segments, cannot install scissor bracing between the two column segments on each side, and can only install one lateral diagonal brace. However, by setting the lateral diagonal brace between the upper and lower segments in a figure-eight shape, the vertical load force borne by the upper lateral diagonal brace can be effectively transferred to the lower steel column and lateral diagonal brace, and finally to the ground through the steel column, ensuring that the vertical load-bearing capacity of the support is not reduced. The segments are connected by bolts. To ensure the shear resistance of the support, horizontal diagonal braces are added at the top and bottom of each support segment, and the horizontal diagonal braces between the upper and lower segments are arranged in a cross shape, which can effectively ensure the overall shear resistance of the support.
[0015] In one specific embodiment of this utility model, the steel column can be made of φ820x10 steel pipe segments, the horizontal connecting rod, the horizontal diagonal brace and the lateral diagonal brace can all be made of φ273x6 steel pipe segments, and the two ends of the steel pipe segments are respectively opened with inserts along the longitudinal direction. The connecting plates are inserted and welded through the inserts, and the high-strength bolts are M56 bolts.
[0016] During installation, the bracket segments are first assembled. Then, the segments are connected sequentially with bolts at the bracket erection location. When installing the upper segment, it is rotated horizontally by 90° to ensure that it crosses the horizontal diagonal brace of the lower segment. After construction is completed, the bracket can be disassembled and reused.
Claims
1. A prefabricated heavy-duty support frame, characterized in that: The system includes at least two interconnected support segments; each support segment comprises four steel columns arranged at the four vertices of a square. Flanges are welded to both ends of each of the four steel columns. Two diagonally opposite steel columns have two pairs of lugs welded to their outer walls at both ends, with the included angle between the two pairs of lugs being 90°. The other two diagonally opposite steel columns have three pairs of lugs welded to their outer walls at both ends, with the included angle between the middle pair of lugs and the other two pairs being 45°. Four horizontal connecting rods are connected between the upper and lower ends of the four steel columns, aligning with the four sides of the square. A horizontal diagonal brace is connected between the upper and lower ends of the two steel columns with three pairs of lugs at both ends. A lateral diagonal brace connects the upper end of one steel column on each side to the lower end of the other steel column. Each horizontal connecting rod, horizontal diagonal brace, and lateral diagonal brace has a connecting plate welded longitudinally at both ends, and is connected to two pairs of opposing ear plates on the two steel columns by high-strength bolts through the connecting plates. The upper ends of the four steel columns of each support segment are connected to the lower ends of the four steel columns of the support segment above by flanges and high-strength bolts. The horizontal diagonal brace of each support segment and the horizontal diagonal brace of the support segment above form a cross in space. The lateral diagonal brace on one side of each support segment and the lateral diagonal brace on the same side of the support segment above form a figure-eight shape in space.
2. The prefabricated heavy-duty support frame according to claim 1, characterized in that: The steel column is made of φ820x10 steel pipe segment; the horizontal connecting rod, horizontal diagonal brace and lateral diagonal brace are all made of φ273x6 steel pipe segment. The two ends of the steel pipe segment are respectively opened with spigots along the longitudinal direction. The connecting plate is inserted and welded through the spigots. The high-strength bolt is an M56 bolt.