Bidirectional tilting heavy steel structure assembly three-way limiting system

Abstract

This invention discloses a three-way limiting system for the assembly of a bi-directional inclined heavy-duty steel structure, relating to the technical field of building construction. The invention includes a bi-directional inclined steel structure and a supporting structure, wherein the supporting structure is provided at the bottom of the nodes of the bi-directional inclined steel structure; the bi-directional inclined steel structure includes H-shaped steel beams, each H-shaped steel beam having an upper flange ear plate and a lower flange ear plate fixedly connected at its upper and lower flanges respectively, and adjacent H-shaped steel beams having upper flange ear plates fixed to each other and lower flange ear plates fixed to each other by mounting bolt pairs; the supporting structure includes a gradually adjustable disassembly device and a supporting frame, the gradually adjustable disassembly device being fixedly connected to the center position of the supporting end of the supporting frame. This invention, through the bi-directional inclined steel structure and supporting structure, ensures the flatness of the inclined plane of the steel roof, improves construction accuracy, prevents construction slippage, and only requires cutting off the ear plates after construction, providing convenience for high-altitude construction.

Description

Technical Field

[0001] This invention belongs to the field of building construction related technology, and in particular relates to a three-way limiting system for bidirectional tilting heavy-duty steel structure assembly. Background Technology

[0002] With the advancement of science and technology and the rapid development of infrastructure construction, traditional building forms are increasingly unable to meet people's demands for architectural aesthetics, leading to a surge in complex and irregularly shaped steel structures. Among these, spatial bidirectional inclined steel structures are particularly popular due to their unique shapes and exquisite appearance. A spatial bidirectional inclined steel structure is a structural form where the spatial installation coordinates of each node are different, and the elevation of the main structure varies. Currently, the forms of spatial irregularly shaped steel structures are becoming increasingly diverse, with increasingly complex nodes and unique shapes, making precise positioning and maintaining alignment during steel structure construction and installation a major challenge. For different structural forms, designing simple and effective limiting devices can minimize construction errors and achieve high-precision installation.

[0003] High-altitude assembly is a common construction method. However, this project faces challenges due to the complex surrounding environment, including underground spaces, the inability of the lower concrete slab to withstand large concentrated loads, uneven working surfaces (not on the same horizontal plane), and the need for multi-trade collaboration. Furthermore, the complex hoisting and high-altitude splicing of large, inclined, heavy-duty deep beam slabs presents significant challenges in controlling the splicing accuracy and flatness of slabs in each area, as well as maintaining structural alignment.

[0004] Domestic scholars have used bidirectional inclined steel composite structures as an example to introduce the installation and positioning technology of bidirectional inclined stiffened steel frames, the optimization of the construction coordination nodes between the flexible steel frames and the rebar formwork, and the steel support technology of the reverse inclined formwork for the stiffened steel frames, providing a safety guarantee for the subsequent formation of irregular 3D curved surfaces in the curtain wall. Existing publicly available technologies also propose a steel structure assembly platform with a limiting function, achieving the purpose of having a limiting structure, improving the practicality and usability of the steel structure assembly platform, and solving the problem of previous steel structure assembly platforms lacking a limiting structure. Furthermore, existing publicly available technologies also propose a limiting conveying device for steel structure construction, solving the problem that in steel structure engineering, especially during high-altitude operations, environmental factors limit the overall construction efficiency and make safety difficult to guarantee, achieving the functions of ensuring construction accuracy and stability, improving safety, accelerating construction efficiency, and reducing construction costs.

[0005] Based on the above technologies, current bidirectional inclined steel structure buildings still have the following drawbacks in actual construction:

[0006] 1. Due to the complex construction site environment, the bottom of the support frame is not in the same plane, and the upper structure space is tilted in both directions, resulting in a large difference in the top elevation of the construction support frame. The above reasons cause a large difference in the height of the support column of the frame. Under the combined action of axial pressure and changes in the construction environment temperature, the axial deformation of different support frames is different, which further leads to a large difference in the settlement of each support column during construction. As a result, the structural installation position at each support point of the frame changes greatly during construction, which is difficult to control.

[0007] 2. Due to limitations in construction site conditions and equipment, large roofs are usually assembled in sections at high altitude. For such bidirectional inclined flat steel roofs, high-altitude section assembly involves a large amount of on-site welding and is difficult to construct. High-altitude welding and assembly makes it difficult to ensure that the upper surfaces of adjacent steel roof sections are on the same plane. Summary of the Invention

[0008] The purpose of this invention is to provide a three-way limiting system for the assembly of bidirectional inclined heavy-duty steel structures. By setting up bidirectional inclined steel structures and supporting structures, it solves the problems of positioning and shaping encountered in the construction of bidirectional inclined steel structure buildings.

[0009] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0010] This invention relates to a three-way limiting system for the assembly of a bi-directional inclined heavy-duty steel structure, comprising a bi-directional inclined steel structure and a supporting structure. During construction positioning, after the H-beams are in place, flange lugs and lower flange lugs are welded to the upper and lower flanges on both sides of the H-beams. Adjacent H-beams are then connected using mounting bolts to achieve temporary positioning. After positioning and calibration, the welded connections at the joints between the H-beams are completed to achieve the limiting construction of the inclined plane. The outer cylinder is then fixed at the center of the supporting frame platform, and positioning sand is filled inside. The inner cylinder is then placed inside the outer cylinder. When the bi-directional inclined heavy-duty steel structure is in place, the steel structure... The nodes are aligned with the midpoint of the top of the positioning plate, and then the vertical position is adjusted by sequentially opening and closing the bottom control valve of the gradually adjustable disassembly device to discharge sand. This allows for the construction of a bidirectional inclined heavy-duty steel structure. The bidirectional inclined steel structure and support structure ensure the flatness of the inclined plane of the steel roof, while limiting the installation coordinates of each key point of the steel structure spatial assembly, improving construction accuracy, preventing construction slippage, and ensuring construction safety. The system is easy to manufacture and disassemble. After construction, only the ear plates need to be cut off, which provides convenience for high-altitude construction. Moreover, the use of this limiting system eliminates the need for other large construction equipment or spatial positioning devices, greatly reducing construction costs and demonstrating good economic efficiency.

[0011] The bidirectional inclined steel structure includes H-shaped steel beams. Each H-shaped steel beam has an upper flange lug and a lower flange lug fixedly connected to its upper and lower flanges, respectively. Adjacent H-shaped steel beams are fixed together with each other and with each other with mounting bolts. To ensure the uniformity of the inclined planes of each installation block of the large steel roof during construction and to reduce misalignment between adjacent blocks, temporary limiting structures are set between the blocks. During construction, by setting upper and lower flange lugs at the lower part of the upper and lower flanges of the H-shaped steel beams and then fixing the lugs with mounting bolts, adjacent H-shaped steel beams can be temporarily fixed to prevent relative misalignment and displacement between adjacent blocks.

[0012] The support structure includes a gradually adjustable disassembly device and a support frame, wherein the gradually adjustable disassembly device is fixedly connected to the center position of the support end of the support frame.

[0013] Furthermore, the bidirectional inclined steel structure is welded from n H-beams, where n ≥ 3.

[0014] Furthermore, the upper flange lug is a single-hole lug.

[0015] Furthermore, the lower flange lug is a double-hole lug.

[0016] Furthermore, the gradually adjustable disassembly device includes a positioning top plate, which is fixedly connected to the center of a positioning circular plate. An inner cylinder is fixedly connected to the center of the bottom of the positioning circular plate. The inner cylinder is slidably connected to the upper part of the inner cylinder. Adjustment sand for adjusting the height of the inner cylinder is provided inside the outer cylinder below the inner cylinder. A control valve for sand discharge is fixedly connected to the bottom of the outer cylinder. To ensure the spatial coordinate accuracy of each installation control node of the large steel roof structure during construction, especially the vertical position, a gradually adjustable disassembly device is installed on the top of the construction support frame. When the steel roof is lifted into place, the midpoint of the top edge of the positioning top plate is aligned with the center of the load-bearing node of the bidirectional inclined heavy-duty steel structure. The positioning is then gradually adjusted by the inner cylinder inside the outer cylinder to ensure the spatial coordinate accuracy of the installation control nodes of the steel roof structure during construction. This ensures the flatness of the inclined plane of the steel roof and limits the installation coordinates of each key point in the spatial assembly of the steel structure, thus improving construction accuracy.

[0017] Furthermore, the positioning top plate is a mountain-shaped support panel.

[0018] Furthermore, the top of the positioning plate is supported at the node position at the bottom of the H-shaped steel beam.

[0019] Furthermore, the control valve is located inside the central through hole of the upper end platform of the support frame.

[0020] The present invention has the following beneficial effects:

[0021] 1. To ensure the uniformity of the inclined planes of each installation block of the large steel roof during construction and to reduce misalignment between adjacent blocks, temporary limiting structures are installed between the blocks. During construction, upper and lower flange lugs are installed on the lower part of the upper and lower flanges of the H-beams, and then the lugs are connected and fixed using mounting bolt pairs. This temporarily fixes adjacent H-beams to ensure that no relative misalignment or displacement occurs between adjacent blocks.

[0022] 2. To ensure the spatial coordinate accuracy of each installation control node of the large steel roof structure during construction, especially the vertical position, a gradually adjustable disassembly device was installed on the top of the construction support frame. When the bi-directional inclined heavy-duty steel structure was lifted into place, the midpoint of the top edge of the positioning plate was aligned with the center of the stress node of the bi-directional inclined heavy-duty steel structure. This positioning was achieved through gradual adjustments of the inner cylinder within the outer cylinder, ensuring the spatial coordinate accuracy of the installation control nodes of the steel roof structure during construction. This ensured the flatness of the inclined plane of the steel roof and limited the installation coordinates of key points in the spatial assembly of the steel structure, thus improving construction accuracy.

[0023] 3. This invention, through the setting of upper flange ear plates, lower flange ear plates, and gradually adjustable disassembly devices, ensures the flatness of the inclined plane of the steel roof, while limiting the installation coordinates of key points in the spatial assembly of the steel structure, improving construction accuracy, preventing construction slippage, ensuring construction safety, and is simple to manufacture and disassemble. After construction is completed, only the ear plates need to be cut off, which provides convenience for high-altitude construction. Moreover, the use of this limiting system eliminates the need for other large construction equipment or spatial positioning devices, greatly reducing construction costs and demonstrating good economic efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a bidirectional inclined heavy-duty steel structure building according to the present invention. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of a bidirectional inclined heavy-duty steel structure building according to the present invention. Figure 2 ;

[0026] Figure 3 This is a schematic diagram of the bidirectional inclined steel structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the H-shaped steel beam of the present invention;

[0028] Figure 5 This is a schematic diagram of the support structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the gradually adjustable disassembly device of the present invention;

[0030] Figure 7 This is a cross-sectional view of the gradually adjustable disassembly device of the present invention.

[0031] Figure label:

[0032] 1. Bidirectional inclined steel structure; 101. H-beam; 1011. Upper flange ear plate; 1012. Lower flange ear plate; 102. Mounting bolt pair; 2. Support structure; 201. Gradient adjustable disassembly device; 202. Support frame; 2011. Positioning top plate; 2012. Positioning circular plate; 2013. Inner cylinder; 2014. Outer cylinder; 2015. Adjusting sand; 2016. Control valve. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Example

[0034] Please see Figure 1-4 As shown, the present invention is a three-way limiting system for the assembly of a bidirectional inclined heavy-duty steel structure, including a bidirectional inclined steel structure 1 and a support structure 2. The bidirectional inclined steel structure 1 has a support structure 2 at the bottom of the node.

[0035] The bidirectional inclined steel structure 1 is welded from n H-shaped steel beams 101, where n≥3. Each H-shaped steel beam 101 has an upper flange ear plate 1011 and a lower flange ear plate 1012 fixedly connected to its upper flange and lower flange, respectively.

[0036] The upper flange ear plate 1011 is a single-hole ear plate, and the lower flange ear plate 1012 is a double-hole ear plate. The upper flange ear plates 1011 and 1012 of the adjacent H-beams 101 are fixed together by mounting bolt pairs 102.

[0037] During construction positioning, after the H-beam 101 is in place, flange ear plates 1011 and lower flange ear plates 1012 are welded to the upper and lower flanges on both sides of the H-beam 101 respectively. Then, adjacent H-beams 101 are connected by mounting bolt pairs 102 to achieve temporary positioning of the H-beam 101. After the positioning and calibration are completed, the welding of the connection parts to be welded at the butt joint position between the H-beams 101 is completed to complete the limiting construction of the inclined plane.

[0038] In summary, to ensure the uniformity of the inclined planes of each installation block of the large steel roof during construction and to reduce misalignment between adjacent blocks, temporary limiting structures are set up between the blocks. During construction, upper flange ear plates 1011 and lower flange ear plates 1012 are installed at the lower part of the upper and lower flanges of the H-beams 101, and then the ear plates are connected and fixed using mounting bolt pairs 102. This allows for the temporary fixation of adjacent H-beams 101, ensuring that no relative misalignment or displacement occurs between adjacent blocks. Example

[0039] Among them, such as Figure 1 , 2 As shown in 5, 6, and 7, this embodiment further explains Example 1. The support structure 2 includes a gradually adjustable disassembly device 201 and a support frame 202. The gradually adjustable disassembly device 201 is fixedly connected to the center position of the support end of the support frame 202.

[0040] The gradually adjustable disassembly device 201 includes a positioning top plate 2011, which is a mountain-shaped support plate. Its top end is supported at the node position at the bottom of the H-shaped steel beam 101, and its body is fixedly connected to the center position of the positioning circular plate 2012. The center position at the bottom of the positioning circular plate 2012 is fixedly connected to the inner cylinder 2013. The inner cylinder 2013 is slidably connected to the upper part of the outer cylinder 2014. The inner cylinder 2014 is provided with adjusting sand 2015 below the inner cylinder 2013 to adjust the height of the inner cylinder 2013. The bottom of the outer cylinder 2014 is fixedly connected to a control valve 2016 for discharging sand. The control valve 2016 is located inside the center through hole of the upper end platform of the support frame 202.

[0041] During construction, the outer cylinder 2014 is first fixed at the center of the support frame 202 platform, and the outer cylinder 2014 is filled with adjusting sand 2015. Then, the inner cylinder 2013 is placed inside the outer cylinder 2014. The inner cylinder 2013 and the outer cylinder 2014 can move relative to each other. When the steel structure is in place, the steel structure node is aligned with the midpoint of the top of the positioning plate 2011. Then, the control valve 2016 at the bottom of the gradually adjustable dismantling device 201 can be opened to discharge the adjusting sand 2015 inside the outer cylinder 2014. During the sand discharge process, the inner cylinder 2013 will slide down along the outer cylinder 2014 to adjust the vertical position of the positioning plate 2011, thus completing the high-precision support for the bidirectional inclined steel structure 1.

[0042] In summary, to ensure the spatial coordinate accuracy of each installation control node of the large steel roof structure during construction, especially the vertical position, a gradually adjustable disassembly device 201 is installed on the top of the construction support frame 202. When the bidirectional inclined steel structure 1 is lifted into place, the midpoint of the top edge of the positioning plate 2011 is aligned with the center of the stress node of the bidirectional inclined steel structure 1. The positioning is then gradually adjusted by the inner cylinder 2013 inside the outer cylinder 2014 to ensure the spatial coordinate accuracy of the installation control nodes of the steel roof structure during construction.

[0043] One specific application of this embodiment is:

[0044] During construction positioning, after the H-beam 101 is in place, flange ear plates 1011 and lower flange ear plates 1012 are welded to the upper and lower flanges on both sides of the H-beam 101 respectively. Then, adjacent H-beams 101 are connected by mounting bolt pairs 102 to achieve temporary positioning of the H-beam 101. After the positioning and calibration are completed, the welding of the connection parts to be welded at the butt joint position between the H-beams 101 is completed to complete the limiting construction of the inclined plane.

[0045] During construction, the outer cylinder 2014 is first fixed at the center of the support frame 202 platform, and the outer cylinder 2014 is filled with adjusting sand 2015. Then, the inner cylinder 2013 is placed inside the outer cylinder 2014. The inner cylinder 2013 and the outer cylinder 2014 can move relative to each other. When the steel structure is in place, the steel structure node is aligned with the midpoint of the top of the positioning plate 2011. Then, the control valve 2016 at the bottom of the gradually adjustable dismantling device 201 can be opened to discharge the adjusting sand 2015 inside the outer cylinder 2014. During the sand discharge process, the inner cylinder 2013 will slide down along the outer cylinder 2014, thereby adjusting the vertical position of the positioning plate 2011 and completing the high-precision support for the bidirectional inclined steel structure 1.

[0046]

[0047] Table 1 Comparison of Deviations Between Measured and Design Coordinates During Construction

[0048] A three-way limiting system was used during the construction and assembly process of this project. Table 1 lists the comparison between the measured coordinates of important control nodes in the bidirectional inclined steel structure roof section during the later stages of construction and the original structural design coordinates. As can be seen from the table, the final positions of the nodes basically meet the design requirements, with a maximum deviation of 9.6mm, effectively achieving high-precision construction and installation of the steel roof.

[0049] The above are merely preferred embodiments of the present invention and do not limit the present invention. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present invention.

Claims

1. A three-way limiting system for assembling a two-way inclined heavy steel structure, comprising a two-way inclined steel structure (1) and a support structure (2), characterized in that: The bidirectional inclined steel structure (1) has a supporting structure (2) at the bottom of the node. The bidirectional inclined steel structure (1) includes H-beams (101), with upper flange lugs (1011) and lower flange lugs (1012) fixedly connected to the upper flange and lower flange of each H-beam (101), respectively. The upper flange lugs (1011) and the lower flange lugs (1012) of adjacent H-beams (101) are fixed together by mounting bolt pairs (102). The support structure (2) includes a gradually adjustable disassembly device (201) and a support frame (202), wherein the gradually adjustable disassembly device (201) is fixedly connected to the center position of the support end of the support frame (202); The gradually adjustable disassembly device (201) includes a positioning top plate (2011), which is fixedly connected to the center of the positioning circular plate (2012). An inner cylinder (2013) is fixedly connected to the center of the bottom of the positioning circular plate (2012). The inner cylinder (2013) is slidably connected to the upper part of the inner cylinder (2014). The inner cylinder (2014) is provided with adjusting sand (2015) for adjusting the height of the inner cylinder (2013) below the inner cylinder (2013). A control valve (2016) for discharging sand is fixedly connected to the bottom of the outer cylinder (2014).

2. The three-way limiting system for assembling the bidirectional tilting heavy-load steel structure according to claim 1, characterized in that: The bidirectional inclined steel structure (1) is welded from n H-beams (101), where n ≥ 3.

3. The three-way limiting system for assembling the bidirectional tilting heavy-load steel structure according to claim 1, characterized in that: The upper flange lug (1011) is a single-hole lug.

4. The three-way limiting system for assembling the bidirectional tilting heavy-load steel structure according to claim 1, characterized in that: The lower flange lug (1012) is a double-hole lug.

5. The three-way limiting system for assembling the bidirectional tilting heavy-load steel structure according to claim 1, characterized in that: The positioning top plate (2011) is a mountain-shaped support panel.

6. The bidirectional tilting heavy-load steel structure assembly three-way limiting system according to claim 1, characterized in that: The top of the positioning top plate (2011) is supported at the node position at the bottom of the H-beam (101).

7. The bidirectional tilting heavy steel structure assembled three-way limiting system according to claim 1, characterized in that: The control valve (2016) is located inside the central through hole of the upper end platform of the support frame (202).

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