Integrated lifting construction method of steel structure metal roof based on collaborative deformation

Abstract

The invention discloses an integrated lifting construction method for a steel structure metal roof based on cooperative deformation. The metal roof is interspersed with the construction in the initial stage of steel roof assembly. The steel roof and the metal roof are deformed cooperatively, and the metal roof participates in the structural force. The metal roof is artificially divided into zones and rear-mounted belts are arranged between the zones, thereby reducing the adverse effect of the skin effect on the ultra-long continuous metal roof. The overall construction period and the water-tightening period can be effectively shortened. The high-altitude operation can also be greatly reduced, and the safety of metal roof construction can be improved. The types of construction machinery can also be greatly reduced, and the economic benefits are obvious.

Description

Technical Field

[0001] The invention relates to the technical field of building steel structure and metal roof construction, and more specifically to an integrated lifting construction method of a steel structure metal roof based on coordinated deformation. Background Art

[0002] Metal roofs are usually installed after the steel roof is completed to avoid deformation or even damage to the metal roof caused by the skin effect during simultaneous construction. However, this method takes a long time to complete and the water shut-off time is late, which cannot meet the needs of rush projects.

[0003] In order to shorten the total construction period and achieve roof water sealing in advance, the following two methods are often used: (1) During the unloading stage of the steel roof, the metal roof is constructed in the area where the unloading has been completed. (2) After the ground assembly of the steel roof is completed, all assembly frames outside the design boundary position are removed, and the metal roof is installed after the roof is deformed. After the metal roof is installed, it is lifted to the design elevation together with the steel roof.

[0004] When the first method is used, the total construction period and water-tightening period can be shortened, but the workers are working at high altitude, which poses a high safety risk. The subsequent unloading of the partitions will have a certain impact on the structural internal force and position of the unloaded partitions, making it difficult to ensure the construction quality. When the second method is used, the workers work at low altitude, and the quality is controllable, but the metal roof still needs to be installed after the steel roof construction is completed and the structure is deformed. The intervention time is late, and the overall construction period and water-tightening period are not significantly improved. Summary of the invention

[0005] The present invention provides an integrated lifting construction method for a steel structure metal roof based on cooperative deformation. The metal roof is interspersed with the construction in the initial stage of steel roof assembly. The steel roof and the metal roof are deformed cooperatively, and the metal roof participates in the structural force. The metal roof is artificially divided into zones and rear-mounted belts are arranged between the zones, thereby reducing the adverse effects of the skin effect on the ultra-long continuous metal roof. The overall construction period and the water-tightening period can be effectively shortened. The high-altitude operation can also be greatly reduced, and the safety of metal roof construction can be improved. The types of construction machinery can also be greatly reduced, and the economic benefits are obvious.

[0006] To achieve the above object, the present invention adopts the following technical solution: a steel structure metal roof integrated lifting construction method based on coordinated deformation, comprising the following steps:

[0007] (1) Divide the construction zones of metal roofs according to the construction zones of steel roofs.

[0008] (2) After the steel roof starting unit is assembled, start installing the metal roof.

[0009] (3) The strip area formed by connecting the design boundary points is used as the metal roof for post-installation belt-drop construction to avoid structural deformation from generating large internal forces on the ultra-long continuous metal roof.

[0010] (4) After the steel roof and metal roof other than the rear-mounted belt are installed, use lifting equipment to lift the steel roof and metal roof to the designed elevation.

[0011] (5) During the lifting process, the metal roof's own rigidity is used to resist the coordinated force and deformation with the steel roof.

[0012] (6) After the steel roof is patched and unloaded, install the metal roofing belt.

[0013] Furthermore, the metal roof is constructed during the ground assembly stage of the steel roof and lifted together.

[0014] Furthermore, during the lifting process, the steel roof and the metal roof are deformed and stressed in coordination, and the metal roof system support structure adopts a semi-rigid connection or a partially constrained release structure, which can reduce the internal force generated in the metal roof system due to structural deformation.

[0015] Furthermore, a metal roof post-installation belt is formed by connecting the design boundary points, and the post-installation belt makes the force transmission of the metal roof discontinuous during the lifting process, thereby reducing the additional stress of components such as purlins and bottom plates caused by the deformation of the steel roof.

[0016] Furthermore, additional constraints can be used to bring the structure close to the design boundary state when it is lifted, or simulation analysis and evaluation can be used to ensure that the additional stress and deformation generated in the metal roof system will not affect the safety and serviceability of the structure.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The method of the present invention can enable the metal roof to be constructed in advance, which can effectively shorten the overall construction period and the water-tightening period.

[0019] (2) The method of the present invention performs metal roofing operations on the ground or at low altitude, which greatly reduces the amount of high-altitude operations and improves efficiency and construction safety.

[0020] (3) The method of the present invention enables the lifting machinery to operate at a close distance, reduces the machine model, and has obvious economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of the construction method of the present invention;

[0022] Figure 2 It is a side view of the construction method of the present invention;

[0023] Figure 3This is a diagram showing the ground assembly of the starting unit of the steel roof;

[0024] Figure 4 It is a schematic diagram of the metal roof interlacing construction;

[0025] Figure 5 It is a hint for integrated improvement;

[0026] Figure 6 It is a schematic diagram of the embedding and unloading of the steel roof;

[0027] Figure 7 This is an illustration of the construction of the rear-mounted belt of the metal roof.

[0028] Labeling instructions: 1. Steel roof; 2. Metal roof; 3. Starting unit; 4. Support structure; 5. Metal roof rear belt; 6. Lifting equipment. DETAILED DESCRIPTION

[0029] The following is combined with Figures 1 to 7 The specific implementation method of the steel structure metal roof integrated lifting construction method based on coordinated deformation of the present invention is further described in detail.

[0030] A steel structure metal roof integrated lifting construction method based on coordinated deformation includes the following steps:

[0031] (1) Divide the construction zones of metal roof 2 according to the construction zones of steel roof 1.

[0032] (2) After the assembly of the starting unit 3 of the steel roof 1 is completed, the metal roof 2 is installed.

[0033] (3) The strip area formed by the connecting line of the designed supporting structure 4 is used as the rear-mounted belt 5 of the metal roof for drop-down construction to avoid structural deformation from causing large internal forces on the ultra-long continuous metal roof 2, etc.

[0034] (4) After the steel roof 1 and the metal roof 2 other than the rear-mounted belt 5 are installed, the steel roof 1 and the metal roof 2 are lifted to the design elevation using the lifting equipment 6.

[0035] (5) During the lifting process, the metal roof 2 uses its own rigidity to resist the coordinated force and deformation with the steel roof 1.

[0036] (6) After the steel roof 1 is patched and unloaded, the metal roof belt 5 is installed.

[0037] In the preferred step of this embodiment, the metal roof is constructed during the ground assembly stage of the steel roof and lifted together.

[0038] Preferably, in this embodiment, during the lifting process, the steel roof and the metal roof are deformed and stressed in coordination, and the metal roof system support structure adopts a semi-rigid connection or a partially constrained release structure, which can reduce the internal force generated in the metal roof system due to structural deformation.

[0039] Preferably, in this embodiment, a metal roof rear-mounted belt is formed by connecting the designed boundary points, and the rear-mounted belt makes the force transmission of the metal roof discontinuous during the lifting process, thereby reducing the additional stress of components such as purlins and bottom plates caused by deformation of the steel roof.

[0040] Preferably, in this embodiment, additional constraints can be used to make the structure close to the design boundary state when it is lifted, or simulation analysis and evaluation can be used to ensure that the additional stress and deformation generated in the metal roof system will not affect the safety and applicability of the structure.

[0041] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A steel structure metal roof integrated lifting construction method based on cooperative deformation, characterized in that: The steps include: (1) Divide the construction zones of metal roofs according to the construction zones of steel roofs. (2) After the steel roof starting unit is assembled, start installing the metal roof. (3) The strip area formed by connecting the design boundary points is used as the metal roof for post-installation belt-drop construction to avoid structural deformation from generating large internal forces on the ultra-long continuous metal roof. (4) After the steel roof and metal roof other than the rear-mounted belt are installed, use lifting equipment to lift the steel roof and metal roof to the designed elevation. (5) During the lifting process, the metal roof's own rigidity is used to resist the coordinated force and deformation with the steel roof. (6) After the steel roof is patched and unloaded, install the metal roofing belt.

2. The integrated lifting construction method for steel structure metal roof based on cooperative deformation according to claim 1 is characterized in that: The metal roof is constructed during the ground assembly phase of the steel roof and lifted together.

3. The integrated lifting construction method of steel structure metal roof based on cooperative deformation according to claim 2 is characterized in that: The metal roof rear-mounted belt is formed by connecting the design boundary points. The rear-mounted belt makes the metal roof force transmission discontinuous during the lifting process, reducing the additional stress of the purlin and bottom plate components caused by the deformation of the steel roof.

4. The integrated lifting construction method for steel structure metal roof based on cooperative deformation according to claim 1 is characterized in that: During the lifting process, the steel roof and the metal roof are subjected to stress and deformation synergistically. The supporting structure of the metal roof system adopts a semi-rigid connection or a partially constrained release structure, which can reduce the internal force generated in the metal roof system due to structural deformation.

5. The integrated lifting construction method for steel structure metal roof based on cooperative deformation according to claim 1 is characterized in that: By adding additional constraints, the structure is lifted close to the design boundary state, or through simulation analysis and evaluation, it is ensured that the additional stress and deformation generated in the metal roof system will not affect the safety and serviceability of the structure.

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