A method for installing a steel structure roof without unloading after accumulated sliding

Abstract

The application discloses a steel structure roof cover accumulated sliding post-unloading just-in-place method, which comprises the following steps: setting a sliding shoe at the bottom of a support of the steel structure roof cover before accumulated sliding; setting a pusher; laying a sliding rail on the top of a support along a sliding route of the steel structure roof cover; accumulating sliding; cutting off the local sliding rail on the top of the support and setting a connecting piece before just-in-place; continuously pushing the steel structure roof cover to align the support with the support; and fixing and connecting the support of the steel structure roof cover with the support through the connecting piece. The method unifies the bottom surface of the bottom plate of the steel structure support, the top surface of the rail and the top surface of the ball hinge support, and does not need unloading operation after sliding into place, and only needs to butt joint the steel structure with the column. Compared with the traditional construction method, the cost of a large number of expensive equipment such as prepared batch jacks, synchronizers and electric control systems is saved, and the whole assembly type installation is adopted, thereby avoiding the construction risk caused by problems in the electric and hydraulic systems in the unloading process after the steel structure sliding into place.

Description

Technical Field

[0001] This invention relates to the field of steel structure construction technology, and more particularly to the construction technology of steel structure roofs, specifically a method for placing a steel structure roof in place without unloading after cumulative sliding. Background Technology

[0002] Currently, the construction process of large-span steel structure roofs generally adopts two methods: hoisting or sliding. When the construction site does not have the conditions for hoisting within the span, the cumulative sliding method is usually used.

[0003] When using the cumulative sliding construction method, the conventional practice is to unload the roof into place using the jack support structure after the roof has slid into place. This unloading and placement method often requires the installation of numerous jacks, and synchronizers between each jack. Subsequently, various monitoring and electrical control equipment are used to monitor the entire unloading process to ensure that all jacks unload synchronously within the allowable error range.

[0004] The above-mentioned operation process basically does not allow for errors or unexpected situations, and the use of jacks, monitoring equipment, and electrical control equipment is expensive; therefore, there is still room for further improvement in the current roof sliding technology. Summary of the Invention

[0005] The purpose of this invention is to improve the current method of positioning steel structure roofs after cumulative sliding, and to propose a method for positioning steel structure roofs after cumulative sliding without unloading, which does not require unloading after sliding into place.

[0006] To achieve the above objectives, the present invention is implemented as follows: A method for positioning a steel structure roof without unloading after cumulative sliding, including... S1. Before cumulative slippage, install sliding shoes at the bottom of the supports of the steel structure roof; S2. Install jacking devices on the side of the support of the steel structure roof; S3. Lay sliding rails at the top of the support columns along the sliding path of the steel structure roof; S4. The steel structure roof undergoes cumulative slippage; S5. Before the supports of the steel structure roof are in place, cut off the partial slide rails at the top of the columns and install connectors for docking. S6. Use the jacking device to continue pushing the steel structure roof so that the supports of the steel structure roof are aligned with the columns. S7. The supports and columns of the steel structure roof are fixedly connected using connectors; S8. Remove the jacking device and slide rails. Operation completed.

[0007] This invention proposes a non-unloading sliding construction method, which simplifies the steel structure support base plate into a "slipper," and unifies the elevations of the bottom surface of the steel structure support base plate, the top surface of the track, and the top surface of the ball joint support. Thus, once the sliding is in place, no unloading operation is required; only the steel structure needs to be connected to the column. Compared with traditional construction methods, this method eliminates the "unloading" step, saving the cost of preparing a large number of expensive equipment such as jacks, synchronizers, and electrical control systems. Furthermore, this method uses a fully prefabricated installation method, avoiding construction risks caused by problems in the electrical and hydraulic systems during the unloading process after the steel structure has slid into place. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the no-unloading sliding construction method shown in Example 1. Figure 1 .

[0009] Figure 2 This is a schematic diagram of the no-unloading sliding construction method shown in Example 1. Figure 2 .

[0010] Figure 3 This is a schematic diagram of the no-unloading sliding construction method shown in Example 1. Figure 3 .

[0011] Figure 4 This is a schematic diagram of the no-unloading sliding construction method shown in Example 1. Figure 4 .

[0012] Figure 5 This is a schematic diagram of the no-unloading sliding construction method shown in Example 1. Figure 5 .

[0013] Figure 6 This is a schematic diagram of the no-unloading sliding construction method shown in Example 1. Figure 6 .

[0014] Figure 7 This is a schematic diagram of the no-unloading sliding construction method shown in Example 1. Figure 7 .

[0015] Figure 8 This is a schematic diagram showing the relationship between the ball joint support and the limiting baffle in Example 1.

[0016] Figure 9 This is a schematic diagram showing the relationship between the support base plate, the sled plate, and the limiting bolts in Example 1.

[0017] Figure 10 This is a schematic diagram of the no-unloading sliding construction method shown in Example 2. Figure 1 .

[0018] Figure 11 This is a schematic diagram of the no-unloading sliding construction method shown in Example 2.Figure 2 .

[0019] Figure 12 This is a schematic diagram of the no-unloading sliding construction method shown in Example 2. Figure 3 .

[0020] Figure 13 This is a schematic diagram of the no-unloading sliding construction method shown in Example 2. Figure 4 .

[0021] Figure 14 This is a schematic diagram of the no-unloading sliding construction method shown in Example 2. Figure 5 .

[0022] Figure 15 This is a schematic diagram of the support base plate in Embodiment 2.

[0023] Figure 16 This is a schematic diagram of the track baffle structure in Example 2.

[0024] Figure 17 This is a schematic diagram showing the relationship between the track embedded parts and the rail clamp in Example 2. Detailed Implementation

[0025] The present invention will be further illustrated below through specific embodiments.

[0026] Example 1 A sliding method for connecting a steel roof structure with a cast steel ball hinge support to the underlying steel columns without unloading and positioning, including... S1. Set a sliding support (1-1) at the bottom of the ball joint of the steel structure roof to be slidable, set a sliding beam (4) between the steel pipe columns (2), set a steel corbel (2-1) at the column head, set a figure-eight brace (7) at the middle of the sliding beam, and weld the bottom of the figure-eight brace (7) to the steel column (2); S2. A sliding track (5) is set on the top of the sliding beam (4), and a rail clamp (5-2) is set between the sliding beam (4) and the sliding track (5). A steel pad (2-2) is filled between the top surface of the column head of the steel pipe column (2) and the track (5). S3. A base plate (1-1-2) is set at the bottom of the sliding support (1-1), and a sled plate (1-1-4) is set at the front end in the sliding direction. Four bolt holes are drilled on the base plate (1-1-2) corresponding to both sides of the sliding track (5). Four large-diameter bolts (1-1-3) are cut off and used as limit bars and inserted into the bolt holes. The head of the bolt (1-1-3) is spot welded to the top surface of the support base plate (1-1-2). The gap between the four limit bolts (1-1-3) and the track (5) is 2~5mm. S4. Set the track surface elevation of the track (5) to exceed the bottom surface design elevation of the base plate (1-1-2), that is, the top surface design elevation of the ball joint support (3) by 2-3 mm. At the same time, when the track (5) is divided into sections due to insufficient length, the track surface elevation of each section of the track (5) should be reduced by 2-3 mm along the sliding direction. S5. Install a hydraulic crawling device (6) on the side of the sliding support (1-1) and implement cumulative sliding; S6, such as Figures 1 to 3 When the cumulative slip of the steel structure is about 1 meter away from completion, the track section that affects the installation of the ball joint support is cut off, that is, the local track (5) on the column head of the steel column (2) is cut off and installed on the ball joint support (3). The ball joint support (3) is welded and fixed to the column head of the steel pipe column (2). A front limit (9) and a side limit (8) are set on the ball joint support (3). A steel pad (10) is filled between the ball joint support (3) and the sliding beam (4). S7, such as Figure 4 , Figure 5 The steel structure roof (1) continues to slide and push until the limiting bolt (1-1-3) contacts the ball joint support (3). Then, remove the two limiting bolts (1-1-3) in front and slide. Then remove the limiting bolts (1-1-3) in the back until the sliding support (1-1) slides to the top surface of the ball joint support (3) and is completely in place. S8, such as Figure 6 Remove the sled plate (1-1-4) at the front end of the base plate (1-1-2), remove the front limit (9) and side limit (8) on the top surface of the ball joint support (3), and weld the base plate (1-1-2) to the ball joint support (3) for fixation. S9, such as Figure 7 The track (5), sliding beam (4), figure-eight brace (7), and steel bracket (2-2) were dismantled, and the operation was completed.

[0027] Example 2 The difference between Example 2 and Example 1 lies in the different sliding objects and connecting parts; the sliding sequence is as follows: Figures 10 to 14 .

[0028] A sliding method for connecting a steel roof structure without seismic-resistant ball hinge supports to the underlying concrete beams and columns, allowing for unloading and placement without disassembly. S1. Set a support column (1-1') at the bottom of the steel structure roof (1') to be slidable and add a sealing bottom plate as a sliding plate at the bottom of the support column (1-1'). Weld a track baffle (1-1-3') on the rear side of the support column (1-1') in the sliding direction. S2. When pouring concrete column (2'), pre-embed support anchor bolts (3-1') at the top of the column. The relative distance between the support anchor bolts (3-1') should be greater than the width of the support column (1-1') so as not to obstruct the sliding construction. At the same time, pre-embed track fixing parts (4-1') at fixed intervals in the concrete column (2') and the concrete beam between the columns. S3. Lay the track (5') and weld the rail clamp (5-2) between the track fixing embedded part (4-1') and the track (5'). S4. Install a crawling device (6') on the side of the support column (1-1') and perform sliding operation; S5. Before the steel structure roof (1') is about to be in place due to cumulative slippage, cut off the part of the track (5') that affects the installation of the support base plate assembly (3') at the top of the concrete column (2') and install the support base plate assembly (3'). S5.1 Install the support base plate (3-2'). Through holes are opened around the support base plate (3-2'). The through holes are used to install support anchor bolts (3-1') and to connect and fix the support base plate (3-2') and the concrete column (2') through the anchor bolts (3-1'). S5.2. A shear-resistant key (3-3') is provided on the bottom surface of the support base plate (3-2'), and the shear-resistant key (3-3') is welded to the track fixing embedded part (4-1'); S5.3, A sliding positioning plate (9) is welded to the edge of the top surface of the support base plate (3-2') along the sliding direction; S6. The steel structure roof (1') continues to be pushed and slid until the support column (1-1') touches the limiting plate (9); S7. Remove the track baffle (1-1-3') and the limiting plate (9) and weld the support column (1-1') to the support base plate (3-2') for fixation; S8. Remove the crawler device (6'), track (5') and cut off the rail clamp (5-2); S9. Pour concrete and fill the gap between the support base plate (3-2'), shear member (3-3'), and concrete column (2'), and cure it. The operation is complete.

[0029] like Figure 15 In the support base plate assembly (3'), the shear-resistant member (3-3') is arranged in a "well" shape at the center of the bottom surface of the support base plate (3-2').

[0030] like Figure 16 The track fixing embedded part (4-1') includes "L" shaped steel bars pre-embedded in concrete columns (2') and beams. A connecting plate is set on the top surface of the "L" shaped steel bars and the rail clamp (5-2) is welded to the connecting plate.

[0031] likeFigure 17 The track baffle (1-1-3') refers to the reinforcing ribs that are set longitudinally and laterally on the side of the support column (1-1').

[0032] As can be seen from the above two examples, the sliding method proposed in this invention can achieve unloading-free cumulative sliding operations on steel structure roofs in scenarios involving columns of different structures and materials. This proves that the technical solution proposed in this invention has sufficient practicality and has the advantages of lower cost and lower risk compared with traditional technical solutions.

Claims

1. A method for positioning a steel structure roof without unloading after cumulative sliding, characterized in that: include S1. Set a support column (1-1') at the bottom of the steel structure roof (1') to be slidable and add a sealing bottom plate as a sliding plate at the bottom of the support column (1-1'). Weld a track baffle (1-1-3') on the rear side of the support column (1-1') in the sliding direction. S2. When pouring concrete column (2'), pre-embed support anchor bolts (3-1') at the top of the column. The relative distance between the support anchor bolts (3-1') should be greater than the width of the support column (1-1') so as not to obstruct the sliding construction. At the same time, pre-embed track fixing parts (4-1') at fixed intervals in the concrete column (2') and the concrete beam between the columns. S3. Lay the track (5') and weld the rail clamp (5-2) between the track fixing embedded part (4-1') and the track (5'); S4. Install a crawling device (6') on the side of the support column (1-1') and perform sliding operation; S5. Before the steel structure roof (1') is about to be in place due to cumulative slippage, cut off the part of the track (5') that will affect the installation of the support base plate assembly (3') at the top of the concrete column (2') and install the support base plate assembly (3'). S5.1 Install the support base plate (3-2'). Through holes are opened around the support base plate (3-2'). The through holes are used to install the support anchor bolts (3-1') and to connect and fix the support base plate (3-2') and the concrete column (2') through the anchor bolts (3-1'). S5.2 A shear key (3-3') is provided on the bottom surface of the support base plate (3-2'), and the shear key (3-3') is welded to the track fixing embedded part (4-1'); S5.3, Set up a limit plate (9); S6. The steel structure roof (1') continues to be pushed and slid until the support column (1-1') touches the limiting plate (9); S7. Remove the track baffle (1-1-3') and the limiting plate (9) and weld the support column (1-1') to the support base plate (3-2') for fixation; S8. Remove the crawling device (6'), track (5') and cut off the rail clamp (5-2); S9. Pour concrete and fill the gap between the support base plate (3-2'), shear key (3-3'), and concrete column (2'), and cure it. The operation is complete.

2. The method for unloading-free positioning of a steel structure roof after cumulative sliding according to claim 1, characterized in that: In the support base plate assembly (3'), the shear key (3-3') is arranged in a "well" shape at the center of the bottom surface of the support base plate (3-2').

3. The method for unloading-free positioning of a steel structure roof after cumulative sliding according to claim 1, characterized in that: The track fixing embedded part (4-1') includes "L"-shaped steel bars pre-embedded in concrete columns (2') and beams. A connecting plate is set on the top surface of the "L"-shaped steel bars and the rail clamp (5-2) is welded to the connecting plate.

4. The method for unloading-free positioning of a steel structure roof after cumulative sliding according to claim 1, characterized in that: The track baffle (1-1-3') refers to the reinforcing ribs that are set longitudinally and laterally on the side of the support column (1-1').

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