Cantilever crane beam structure and construction method thereof

Abstract

The invention relates to the technical field of crane beam construction, and discloses a cantilever crane beam structure which comprises a platform, a plurality of steel columns vertically fixed to the upper portion of the platform, a roof steel beam arranged at the top ends of the steel columns and a crane beam body transversely arranged on the upper portion of the platform and fixed to the steel columns. The structure further comprises an overhanging crane beam, an overhanging crane beam inclined support, an overhanging crane beam lateral support and a box type bracket. The overhanging crane beam is fixed in the transverse extending direction of the crane beam body, the bottom end of the overhanging crane beam inclined support is fixed to the platform, and the top end of the overhanging crane beam inclined support is fixed to the tail end of the overhanging crane beam. By means of the innovative structural design and construction method, the problems of space occupation, structural stability and economical efficiency in traditional crane beam design are solved, the stability and safety of the whole structure are improved by increasing the torsion resistance and optimizing a supporting system, meanwhile, the construction efficiency is improved, and the construction cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of crane beam structure construction technology, and in particular to a cantilever crane beam structure and its construction method. Background Technology

[0002] In recent years, with the acceleration of urbanization, urban land resources have become increasingly scarce, especially in industrial areas. In response to policies promoting industrial relocation to multi-story buildings, more and more multi-story industrial plants have been widely adopted. These plants typically need to address the vertical transportation of raw materials or finished products between different floors. Traditional crane beam structures usually rely on freight elevators or ground-mounted steel columns to support the crane beams. However, these traditional structures have several problems, mainly including the following aspects:

[0003] Traditional methods of supporting crane beams require ground-mounted steel columns, which restricts the layout of processes around the factory and affects the design of material transportation routes.

[0004] When using independent cantilevered steel columns, the excessively large slenderness ratio of the columns may pose a risk of insufficient stability. To ensure structural stability, additional stabilization measures are usually required, or the cross-section of the steel columns may be significantly increased, thereby increasing the complexity of the engineering design.

[0005] The need to install additional support columns and their foundations directly increases the cost of the project. Furthermore, these additional support columns may cause additional construction difficulties and time delays, further impacting the project's economic efficiency.

[0006] To address the above problems, this invention proposes a cantilevered crane beam structure and its construction method, aiming to optimize the structural design of existing crane beams, reduce space occupation, improve structural stability, and reduce construction costs. Summary of the Invention

[0007] To address the technical problems mentioned in the background section, this invention provides a cantilevered crane beam structure and its construction method.

[0008] The present invention is achieved by the following technical solution: a cantilever crane beam structure, including a platform, several steel columns vertically fixed above the platform, a roof steel beam set at the top of the several steel columns, and a crane beam body horizontally set above the platform and fixed to the steel columns.

[0009] It also includes cantilever crane beams, cantilever crane beam diagonal supports, cantilever crane beam lateral supports, and box-shaped brackets;

[0010] The cantilever crane beam is fixed in the lateral extension direction of the crane beam body. The bottom end of the cantilever crane beam's oblique support and the platform are fixed. The top end of the cantilever crane beam's oblique support and the end end of the cantilever crane beam are fixed. The lateral support of the cantilever crane beam, the box-type bracket, and the cantilever crane beam are fixed in sequence in the horizontal direction, forming a triangular cantilever crane beam structure.

[0011] Furthermore, the cantilever crane beam includes an H-shaped crane beam and several transverse sealing plates, with the several transverse sealing plates fixed at equal intervals between the upper and lower flanges of the H-shaped crane beam.

[0012] Furthermore, the spacing between two adjacent transverse sealing plates is ≤1500mm, and the transverse sealing plate is 20±0.5mm. The sealing plate and the flange are connected by a K-shaped groove weld, and the weld leg size hf=8mm.

[0013] Furthermore, the diagonal supports for the cantilever crane beams utilize steel rectangular tubing.

[0014] Furthermore, the angle θ between the centerline of the lateral support of the cantilever crane beam and the horizontal plane satisfies: θ=30±5°.

[0015] Furthermore, the lateral support of the cantilever crane beam is welded to the cantilever crane beam and the box-shaped bracket, and is made of hot-rolled H-beam steel (specification HN400×200×8×13).

[0016] This invention also proposes a construction method for a cantilever crane beam structure, comprising the following steps:

[0017] Step 1: Form a cantilevered crane beam by welding transverse sealing plates at equal intervals at the upper and lower flanges of the H-shaped crane beam, and fix them to the main body of the crane beam;

[0018] Step 2: Weld hot-rolled H-beams to form lateral supports for the cantilever crane beam, and fix them to the cantilever crane beam;

[0019] Step 3: Weld box-shaped brackets to one side of the adjacent steel column and fix them to the lateral support of the cantilever crane beam;

[0020] Step 4: Weld an oblique support for the cantilever crane beam below the end of the cantilever crane beam away from the main body of the crane beam, and fix it to the platform.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] This invention increases the torsional resistance of the H-shaped crane beam by welding transverse end plates at equal intervals between the upper and lower flanges, significantly improving structural stability, especially under dynamic loads. The cantilever design avoids the need for ground-mounted steel columns in traditional designs, freeing up more ground space and improving the space utilization of the factory building, making it suitable for multi-story industrial buildings with limited space. The design of diagonal and lateral supports enhances the structure's load-bearing capacity, especially when facing dynamic crane loads (such as lifting impacts and crane operation), effectively distributing moments and loads to prevent structural instability.

[0023] The cantilevered crane beam structure proposed in this invention adopts a supportless construction method, avoiding the cumbersome steps of setting up temporary supports in traditional construction, reducing the construction period and cost, and improving construction efficiency. By eliminating the ground-supported steel columns, the input of materials and foundation construction is reduced, saving on project construction costs.

[0024] In summary, this invention, through innovative structural design and construction methods, not only solves the problems of space occupation, structural stability, and economy in traditional crane beam design, but also improves the overall structural stability and safety by increasing torsional resistance and optimizing the support system, while simultaneously improving construction efficiency and reducing construction costs. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the cantilever crane beam structure proposed in this invention after construction is completed;

[0026] Figure 2 This is a schematic diagram of the cantilever crane beam structure proposed in this invention after the box-type brackets are installed during construction;

[0027] Figure 3 This is a schematic diagram of the cantilever crane beam structure proposed in this invention after the installation of box-shaped brackets, cantilever crane beams, and diagonal supports of the cantilever crane beams during construction.

[0028] Figure 4 This is a schematic diagram of the cantilever crane beam structure proposed in this invention.

[0029] Figure 5 This is a schematic diagram of the cantilever crane beam structure proposed in this invention, showing the cantilever crane beam with oblique support and after the cantilever crane beam is fixed.

[0030] Figure 6 These are actual photos taken on-site during the construction of the cantilever crane beam structure proposed in this invention.

[0031] Figure 7 These are actual photos taken on-site after the completion of the cantilever crane beam structure proposed in this invention.

[0032] Figure 8 This is a flowchart of the construction method for the cantilever crane beam structure of the present invention.

[0033] Explanation of key symbols:

[0034] 1. Platform; 2. Steel column; 3. Main body of crane beam; 4. Roof steel beam; 5. Box corbel; 6. Cantilever crane beam; 7. Diagonal support of cantilever crane beam; 8. Lateral support of cantilever crane beam; 601. H-type crane beam; 602. Horizontal sealing plate. Detailed Implementation

[0035] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0036] Example 1:

[0037] Reference Figure 1-7 The proposed solution is a cantilevered crane beam structure, which includes a platform, several steel columns vertically fixed above the platform, a roof steel beam set on the top of the steel columns, and a crane beam body horizontally set above the platform and fixed to the steel columns.

[0038] It also includes cantilever crane beams, cantilever crane beam diagonal supports, cantilever crane beam lateral supports, and box-shaped brackets;

[0039] The cantilevered crane beam is fixed in the lateral extension direction of the crane beam body. The bottom end of the cantilevered crane beam's diagonal support and the platform are fixed, as are the top end of the diagonal support and the end end of the cantilevered crane beam. The lateral support, box-shaped bracket, and cantilevered crane beam are fixed sequentially end to end in the horizontal direction, forming a triangular cantilevered crane beam structure. In this design, the box-shaped bracket connects the lateral support to the vertical steel column, further enhancing the overall structural stability and load-bearing capacity.

[0040] Furthermore, the cantilever crane beam structure proposed in this invention is particularly suitable for on-site construction of crane beams with cantilever requirements.

[0041] In actual operation, the crane system may experience resonance due to dynamic loads (such as crane operation and lifting impact). During the crane operation phase, it is necessary to comprehensively consider the superposition effects of vertical load, lateral braking force, wind load, etc., especially the torque problem that may be caused by eccentric load. Therefore, the following design can also be carried out when implementing this scheme.

[0042] In an optional embodiment of the present invention, the cantilever crane beam includes an H-shaped crane beam (preferably made of Q355B material) and several transverse sealing plates, with the transverse sealing plates fixed at equal intervals between the upper and lower flanges of the H-shaped crane beam. The torsional resistance of the cantilever crane beam can be increased by providing several transverse sealing plates.

[0043] As an optional embodiment of the present invention, the spacing between two adjacent transverse sealing plates is ≤1500mm, and the transverse sealing plate is 20±0.5mm. The sealing plate and the flange are connected by a K-shaped groove weld, and the weld leg size hf=8mm.

[0044] As an optional embodiment of the present invention, the inclined support of the cantilever crane beam adopts a steel structure with a rectangular cross-section, the cross-sectional dimensions of which can be 550*350*25*25, or other dimensions can be selected according to the actual needs of the project.

[0045] Furthermore, in this scheme, the angle θ between the centerline of the lateral support of the cantilever crane beam and the horizontal plane satisfies: θ=30±5°.

[0046] The lateral supports of the cantilever crane beam are welded to the cantilever crane beam and the box girder, and are made of hot-rolled H-beams (specifications can be HN400×200×8×13, or other sizes can be selected according to the actual needs of the project). The lateral supports of the cantilever crane beam are used to resist lateral displacement, providing support against lateral forces, thereby improving the stability of the beam.

[0047] The cantilever crane beam structure proposed in this invention fully considers the influence of dynamic loads such as crane operation and lifting impact. By comprehensively considering the vertical load, lateral braking force, wind load, and torque caused by eccentric load, the stability of the beam during operation is ensured.

[0048] Furthermore, the cantilever design avoids the need for ground-level steel columns in traditional structures, thus effectively freeing up ground space and improving land utilization, making it particularly suitable for multi-story industrial buildings.

[0049] Example 2:

[0050] Reference Figure 8 The present invention also proposes a construction method for a cantilever crane beam structure, comprising the following steps:

[0051] Step 1: Form a cantilevered crane beam by welding transverse sealing plates at equal intervals at the upper and lower flanges of the H-shaped crane beam, and fix them to the main body of the crane beam;

[0052] Step 2: Weld hot-rolled H-beams to form lateral supports for the cantilever crane beam, and fix them to the cantilever crane beam;

[0053] Step 3: Weld box-shaped brackets to one side of the adjacent steel column and fix them to the lateral support of the cantilever crane beam;

[0054] Step 4: Weld an oblique support for the cantilever crane beam below the end of the cantilever crane beam away from the main body of the crane beam, and fix it to the platform.

[0055] The cantilever crane beam structure and construction method proposed in this invention have the following advantages:

[0056] Enhanced structural stability: The combination of transverse end plates, diagonal supports, and box-type corbels greatly improves the structural stability of the cantilever crane beam, ensuring that it remains stable under dynamic loads.

[0057] Improved space utilization: Removing the ground steel columns frees up more space, optimizing the overall layout of the factory, and is particularly suitable for multi-story industrial buildings with limited space.

[0058] Economy and construction efficiency: The construction method is convenient and quick, which also speeds up the installation process and reduces costs.

[0059] Improved load capacity: Structural reinforcement measures ensure that the system can withstand greater loads and effectively cope with various dynamic loads and torque effects.

[0060] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A cantilevered crane beam structure, comprising a platform, a plurality of steel columns vertically fixed above the platform, a roof steel beam disposed at the top of the plurality of steel columns, and a crane beam body horizontally disposed above the platform and fixed to the steel columns, characterized in that, It also includes cantilever crane beams, cantilever crane beam diagonal supports, cantilever crane beam lateral supports, and box-shaped brackets; The cantilever crane beam is fixed in the lateral extension direction of the crane beam body. The bottom end of the cantilever crane beam's oblique support and the platform are fixed. The top end of the cantilever crane beam's oblique support and the end end of the cantilever crane beam are fixed. The lateral support of the cantilever crane beam, the box-type bracket, and the cantilever crane beam are fixed in sequence in the horizontal direction, forming a triangular cantilever crane beam structure.

2. The cantilever crane beam structure as described in claim 1, characterized in that, The cantilever crane beam includes an H-shaped crane beam and several transverse sealing plates, with the transverse sealing plates fixed at equal intervals between the upper and lower flanges of the H-shaped crane beam.

3. The cantilever crane beam structure as described in claim 1, characterized in that, The spacing between two adjacent transverse sealing plates is ≤1500mm, and the transverse sealing plate is 20±0.5mm. The sealing plate and the flange are connected by a K-shaped groove weld, and the weld leg size hf=8mm.

4. The cantilever crane beam structure as described in claim 1, characterized in that, The cantilever crane beam's diagonal support uses steel rectangular tubing.

5. The cantilever crane beam structure as described in claim 1, characterized in that, The angle θ between the centerline of the lateral support of the cantilever crane beam and the horizontal plane satisfies: θ=30±5°.

6. The cantilever crane beam structure as described in claim 1, characterized in that, The lateral support of the cantilever crane beam is welded to the cantilever crane beam and the box-shaped bracket, and is made of hot-rolled H-beam steel.

7. A construction method for a cantilever crane beam structure as described in any one of claims 1-6, characterized in that, Includes the following steps: Step 1: Form a cantilevered crane beam by welding transverse sealing plates at equal intervals at the upper and lower flanges of the H-shaped crane beam, and fix them to the main body of the crane beam; Step 2: Weld an oblique support for the cantilever crane beam below the end of the cantilever crane beam furthest from the main body of the crane beam, and fix it to the platform; Step 3: Weld hot-rolled H-beams to form lateral supports for the cantilever crane beam, and fix them to the cantilever crane beam; Step 4: Weld a box-shaped bracket to one side of the steel column and fix it to the lateral support of the cantilever crane beam.

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