Large-span steel structure and integrated construction method of metal roof thereof

Abstract

The application discloses a large-span steel structure and a metal roof integrated construction method thereof, and mainly comprises the following steps: (1) arranging assembling jigs and fulcrums at boundary positions on an assembling operation surface according to the construction partition, design boundary and assembling requirement of the large-span steel structure; (2) completing the assembling construction of the large-span steel structure on the assembling jigs; (3) reserving part of the assembling jig fulcrums near the original support boundary of the large-span steel structure and unloading the rest of the assembling jig fulcrums; (4) completing the metal roof system installation operation on the unloaded steel structure; (5) installing corresponding lifting or hoisting construction measures; (6) integrally lifting or hoisting and positioning; (7) fixing the large-span steel structure and the metal roof on a supporting structure; and (8) integrally unloading and completing the construction. The application solves the defects of the existing steel structure and metal roof integrated construction, can avoid the excessive deformation of the metal roof in the integrated construction process, is safe and controllable, and significantly improves the construction quality.

Description

Technical Field

[0001] This invention relates to the field of steel structure construction, specifically to an integrated construction method for a large-span steel structure and its metal roof. Background Technology

[0002] With the rapid development of the construction industry, metal roofing systems are increasingly being used in large public buildings, especially in the field of long-span steel structure buildings, due to their superior performance. The coordination between the construction of long-span steel structures and metal roofing has a significant impact on construction quality and schedule.

[0003] In conventional construction methods, metal roofing can only begin after the large-span steel structure is completed and unloaded as a whole. Many components of the roofing system require high-altitude, piecemeal assembly, resulting in a large workload, low installation efficiency, long waiting times between different disciplines, and delayed structural waterproofing. To address this issue, integrated metal roofing construction technology has emerged. Current integrated steel structure and metal roofing methods primarily involve simultaneously installing the metal roofing system during the ground assembly phase of the steel structure. The roofing system can then be lifted or hoisted into place along with the overall steel structure, avoiding the high-altitude, piecemeal assembly of roofing components, resulting in high construction efficiency and significantly shortened construction time. However, because the metal roofing is located on the surface of the structure, it is prone to a "skin effect" when constructed alongside the main structure. This causes it to share stress during the main structure's construction, leading to damage to metal roofing connectors and panels, and in severe cases, leakage problems, affecting construction quality and safety. Currently, integrated steel structure and metal roofing construction is mainly suitable for small-span structures or structures with minimal construction deformation. Summary of the Invention

[0004] To address the technical problems existing in the prior art, this invention provides an integrated construction method for large-span steel structures and their metal roofs, overcoming the shortcomings of current integrated steel structure and metal roof construction methods. This method is convenient to operate, highly feasible, and ensures that the stress on the metal roof system during construction meets design requirements. It avoids excessive deformation of the metal roof during integrated construction, ensuring safety and controllability, and significantly improving construction quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a construction method for an integrated large-span steel structure and its metal roof, mainly comprising the following steps:

[0006] (1) Based on the construction zoning, design boundaries and assembly requirements of the large-span steel structure, the assembly jig and the support points at the boundary positions should be reasonably arranged on the assembly work surface.

[0007] (2) The large-span steel structure is assembled on the assembly frame.

[0008] (3) Retain some of the assembly frame supports near the original support boundary of the large-span steel structure, unload the remaining assembly frame supports, and complete the unloading deformation of the large-span steel structure.

[0009] (4) On the unloaded steel structure, complete the installation of the metal roofing system.

[0010] (5) Install the corresponding lifting or hoisting construction measures according to the construction plan.

[0011] (6) Lift or hoist the large-span steel structure and metal roof into place as a whole.

[0012] (7) Fix the large-span steel structure and metal roof to the supporting structure according to the design drawings to form a stable structural system.

[0013] (8) Unload the entire structure and the construction is complete.

[0014] Furthermore, when selecting the above-mentioned assembly support points, it is necessary to fully consider that the structural deformation can be close to the original design state when unloading on the ground; when unloading the assembly jig, it is advisable to gradually unload from the area with larger deformation to the area with smaller deformation. At the same time, it is necessary to consider the safety issues caused by the increased load on some support points due to unloading, and it is advisable to choose to unload in stages and batches.

[0015] Furthermore, the construction and installation of the aforementioned metal roofing system can be carried out by interspersing some of its structural components that are not sensitive to deformation during the steel structure construction phase, or the metal roofing system components can be temporarily fixed in the design position first, unloaded from the ground, and then finally fixed, thus shortening the construction period.

[0016] Furthermore, the locations for the aforementioned lifting or hoisting measures should be selected near the original design boundary to ensure that during lifting and hoisting, as well as during the subsequent overall unloading, the large-span steel structure and the metal roof will not undergo significant deformation, thus affecting the stress and shape of the metal roof.

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

[0018] (1) Highly feasible;

[0019] (2) The structural stress meets the design requirements, which can effectively eliminate excessive deformation of the metal roof during integrated construction, resulting in high construction quality;

[0020] (3) No high-altitude work is required, resulting in high construction efficiency and good safety;

[0021] (4) Interdisciplinary work is carried out simultaneously, which significantly saves construction time;

[0022] (5) The measures are small in scale and have good overall economic benefits. Attached Figure Description

[0023] Figure 1 This is a top view of the large-span steel structure partition in an embodiment of the present invention;

[0024] Figure 2 This is a side view of the large-span steel structure partition assembly stage according to an embodiment of the present invention;

[0025] Figure 3 This is a side view of the integrated construction stage of the metal roofing according to an embodiment of the present invention;

[0026] Figure 4 This is a side view of the completed stage of the integrated large-span steel structure metal roof according to an embodiment of the present invention. Detailed Implementation

[0027] Reference Figures 1 to 4 The specific implementation method of the present invention, which is a large-span steel structure and its integrated metal roof construction method, is further described below.

[0028] A construction method for an integrated large-span steel structure and its metal roof is described in detail below:

[0029] 1. Arrange the assembly jig and boundary supports at the design boundary positions according to the structural zoning of the large-span steel structure 1, the design boundary of the zoning 2, and the structural assembly requirements 4;

[0030] 2. Complete the assembly construction of the large-span steel structure section 1 on the assembly platform formed by the assembly jig 3 and the boundary support 4;

[0031] 3. Retain the boundary support 4 at the design boundary position of structural partition 1, unload the assembly jig 3, and the structure realizes the transformation from the assembly state boundary to the design state boundary, completing the unloading deformation of structural partition 1;

[0032] 4. While maintaining structural partition 1 under the support of boundary support 4, complete the installation of the metal roofing system 5;

[0033] 5. Arrange lifting or hoisting points and corresponding construction measures according to the design boundaries of the structural zones; 6.

[0034] 6. The integrated partition formed by the large-span steel structure partition 1 and the metal roofing system 5 of that partition is lifted or hoisted into place as a whole;

[0035] 7. Fix the integrated construction zones to the supporting structural columns 7 to form a stable structural system;

[0036] 8. Unloading construction measure 6, integrated construction completed.

[0037] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A construction method for an integrated large-span steel structure and its metal roof, characterized in that, The main steps include: Based on the construction zones, design boundaries, and assembly requirements of the large-span steel structure, the assembly jigs and support points at the boundary positions are reasonably arranged on the assembly work surface. The assembly and construction of large-span steel structures were completed on the assembly jig. Retain some of the assembly frame supports near the original support boundary of the large-span steel structure, unload the remaining assembly frame supports, and complete the unloading and deformation of the large-span steel structure. On the unloaded steel structure, complete the installation of the metal roofing system; Install appropriate lifting or hoisting measures according to the construction plan; The large-span steel structure and metal roof are lifted or hoisted into place as a whole. The large-span steel structure and metal roof are fixed to the supporting structure according to the design drawings to form a stable structural system. Complete unloading; construction finished.

2. The integrated construction method for large-span steel structures and their metal roofs according to claim 1, characterized in that: When selecting assembly support points, it is necessary to fully consider that the structural deformation can be close to the original design state when unloading on the ground. When unloading the assembly jig, unload from the area with larger deformation to the area with smaller deformation. At the same time, it is necessary to consider the safety issues caused by the increased load on some support points due to unloading, and choose to unload in stages and batches.

3. The integrated construction method for large-span steel structures and their metal roofs according to claim 1, characterized in that: The construction and installation of metal roofing systems can be carried out by interspersing the construction of structural components that are not sensitive to deformation during the steel structure construction phase, or by temporarily fixing the metal roofing system components to the designed position first, unloading them on the ground, and then finally fixing them, thereby shortening the construction period of the metal roofing system.

4. The integrated construction method for large-span steel structures and their metal roofs according to claim 1, characterized in that: The locations for lifting or hoisting measures should be selected near the original design boundary to ensure that the large-span steel structure and metal roof do not undergo significant deformation during lifting and hoisting, as well as during the subsequent overall unloading, so as not to affect the stress and shape of the metal roof.

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