A special-shaped steel structure combining lotus leaf and grid steel structure and its construction method

Abstract

The invention discloses a special-shaped steel structure combining a lotus leaf and a grid steel structure and a construction method thereof, comprising a central annular grid steel structure and a central lotus leaf umbrella steel structure, wherein the central annular grid steel structure is a cylindrical structure which is vertically penetrated and the cylinder wall is a grid steel structure, the top of the central annular grid steel structure is provided with an annular connecting support steel beam, the central lotus leaf umbrella steel structure comprises a central cylinder column section, a ring beam at the top of a central cylinder column, a plurality of supporting columns, a main ring beam of the column, a plurality of radial main beams, annular support beams, a bifurcated cantilever beam and a cantilever ring beam, forming a unique shape of "spring coming out of a stone" as a whole, and the central annular grid steel structure is elliptical, the central cylinder column section is located on the long axis of the ellipse of the central annular grid steel structure and has a distance from the center point of the ellipse, forming an unconventional elliptical structure in terms of structural shape and an eccentric central lotus leaf umbrella steel structure, having a unique shape of special shape and being conducive to the stability and construction of the steel structure.

Description

Technical Field

[0001] The invention belongs to the field of steel structure buildings, and particularly relates to a special-shaped steel structure combining a lotus leaf and a grid steel structure and a construction method thereof. Background Art

[0002] Compared with traditional concrete buildings, steel structure buildings use steel plates or steel sections instead of reinforced concrete, which are stronger and more earthquake-resistant. And because the components can be factory-made and installed on site, the construction period is greatly reduced. Because steel can be reused, it can greatly reduce construction waste and is more environmentally friendly. Therefore, it is widely used in countries around the world and applied in industrial and civil buildings.

[0003] For airports, compared with traditional square truss steel structures, special-shaped steel structures are increasingly in line with the requirements of architectural modeling and decoration. Some buildings with majestic appearance have become the benchmark of a city, such as the comprehensive transportation transfer center of the terminal. Special-shaped steel structures can be impressive, so unique shapes and supporting construction plans are needed. Summary of the invention

[0004] The invention provides a special-shaped steel structure combining a lotus leaf and a grid steel structure and a construction method thereof, so as to solve the technical problems mentioned in the background technology.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a special-shaped steel structure combining lotus leaf and grid steel structure, comprising a central annular grid steel structure and a central lotus leaf umbrella steel structure, wherein the central annular grid steel structure is a cylindrical structure penetrating vertically and the cylinder wall is a grid steel structure, the top of the central annular grid steel structure has an annular connecting support steel beam, the central lotus leaf umbrella steel structure comprises a central cylinder column section, a top ring beam of a central cylinder column, a plurality of supporting columns, a main ring beam of a column, a plurality of radial main beams, annular support beams, a bifurcated cantilever beam and a cantilever ring beam, the central cylinder column section is located on the inner side of the central annular grid steel structure, the central cylinder column section is a vertical cylinder formed by a plurality of annularly arranged vertical poles, the top ring beam of the central cylinder column is located on the top of the central cylinder column section, The supporting columns are located at the top of the connecting support steel beams, the main ring beams of the columns are arranged in a ring shape at the top of the supporting columns, and a number of radial main beams are respectively extended in an arc shape from the top of the ring beam at the top of the center tube column to the top of the supporting column to form a lotus leaf shape. The highest point of the radial main beam is located between the ring beam at the top of the center tube column and the supporting column in the horizontal direction. The annular support beams are arranged between the radial main beams to form a number of annular beams. The forked cantilever beams are located outside the ring formed by the supporting columns. The forked cantilever beams are in a V shape with the apex on the main ring beam of the column. The cantilever ring beams are connected in a ring shape to the end of the forked cantilever beams. In the top view, the central annular grid steel structure is elliptical, and the central tube column section is located on the long axis of the ellipse of the central annular grid steel structure and is spaced from the center point of the ellipse.

[0006] Preferably, the radial main beam between the main ring beam of the column and the topmost annular support beam is in a V-shaped structure with the apex on the annular support beam.

[0007] Preferably, the annular support beam is undulating in height direction.

[0008] Preferably, the vertical poles of the central column section form an ellipse in a top view.

[0009] Preferably, the central cylindrical section is shaped like a small waist with the thinnest part in the middle in the height direction.

[0010] Preferably, the uprights of the central column section are connected by connecting plates.

[0011] Preferably, the central annular grid steel structure includes a plurality of inclined columns, and a plurality of inclined beams are arranged between the inclined columns.

[0012] Preferably, the central annular grid steel structure is shaped like a small waist in the height direction with the thinnest part in the middle.

[0013] Preferably, the cantilever length of the top of the end of the central annular grid steel structure farther from the central column section is greater than the cantilever length of the top of the end of the central annular grid steel structure closer to the central column section.

[0014] A construction method of a special-shaped steel structure combining a lotus leaf and a grid steel structure, comprising the following steps:

[0015] Step 1: construct the inclined columns and inclined beams of the central ring-shaped grid steel structure in sections from bottom to top;

[0016] Step 2: Construction of connecting support steel beams;

[0017] Step 3: construct the roof concrete structure in the plane of the connecting support steel beam, and hollow out the inner side of the connecting support steel beam to form a skylight;

[0018] Step 4: construct supporting columns and main ring beams of columns;

[0019] Step 5: construct the central cylinder column section and the top ring beam of the central cylinder column;

[0020] Step 6: construct the radial main beam at the position where the support column is close to the central column section, then hoist the adjacent radial main beams, and then hoist a section of the annular support beam between the radial main beams, and repeat the hoisting of the radial main beam and the annular support beam to complete the hoisting of the radial main beam and the annular support beam;

[0021] Step 7: Hoist the forked cantilever beam and cantilever ring beam in sections in the circular direction to complete the construction.

[0022] The beneficial effects of the present invention are as follows: 1. The present application designs a steel structure shape of a stone emerging from a spring, which is applied to the comprehensive transportation transfer center of the airport. The central annular grid steel structure of the vertically penetrating cylindrical structure and the cylindrical wall presenting a grid steel structure constitutes a "stone" shape, and the central lotus leaf umbrella steel structure constitutes a "spring" shape. The central lotus leaf umbrella steel structure includes a central cylinder column section, a ring beam at the top of the central cylinder column, a number of supporting columns, a main ring beam of the column, a number of radial main beams, annular support beams, a bifurcated cantilever beam and a cantilever ring beam, and the highest point of the radial main beam is located horizontally between the ring beam at the top of the central cylinder column and the supporting column, forming a "spring emerging from the stone" shape as a whole. The central ring-shaped grid steel structure is elliptical, and the central column section is located on the long axis of the ellipse of the central ring-shaped grid steel structure and is spaced from the center point of the ellipse. The structural shape forms an unconventional elliptical structure and an eccentric central lotus leaf umbrella steel structure, which has a unique shape of special shape and is conducive to the stability and construction of the steel structure. In addition, the outer side of the central space bending and twisting grid steel structure can be poured with several layers of concrete platform slabs in the height direction. Since the structure of the application can achieve structural stability by itself, the construction concept of "separation of strength and mix" can be realized, reducing the impact of the cross-construction of the steel structure of the application and the surrounding slabs, killing two birds with one stone.

[0023] 2. The end of the radial main beam is V-shaped and can be supported on two supporting columns, so the overall stability is relatively high;

[0024] 3. The undulating shape of the annular support beam in the height direction not only further enhances the characteristics of the shape, but also improves the stress situation of the structural stability and the overall stability.

[0025] 4. The vertical poles of the central column section form an ellipse in the top view, and the central column section is in the shape of a small waist with the thinnest part in the middle in the height direction. The vertical poles of the central column section are connected by connecting plates, which makes the central column section unique and novel in shape and high in structural stability.

[0026] 5. The central ring grid steel structure can adopt the structural form of inclined columns and inclined beams, and the shape is closer to nature;

[0027] 6. In this modeling, the roof layer concrete structure is constructed in the plane connected to the supporting steel beam, which separates the whole and can better reflect the macroscopic modeling. The construction steps are reasonable, the sections are reasonable, the sequence is reasonable, and it can be produced safely and steadily promoted, ensuring the construction quality and safety.

[0028] Other features and advantages of the present invention will be set forth in the following description, and in part will become apparent from the description, or may be understood by practicing the present invention; the main purpose and other advantages of the present invention may be realized and obtained through the solutions particularly pointed out in the description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional schematic diagram of the overall structure of an embodiment of the present invention;

[0030] Figure 2 is a schematic side view of the overall structure of an embodiment of the present invention;

[0031] Figure 3 It is a schematic top view of the overall structure of an embodiment of the present invention.

[0032] Figure numerals: 1. Central annular grid steel structure; 11. Connecting support steel beam; 12. Inclined column; 13. Inclined beam; 2. Central lotus leaf umbrella steel structure; 21. Central tube column section; 22. Top ring beam of central tube column; 23. Support column; 24. Main ring beam of column; 25. Radial main beam; 26. Annular support beam; 27. Forked cantilever beam; 28. Cantilever ring beam. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is described in detail below through examples. The following examples are merely exemplary and can only be used to explain and illustrate the technical solution of the present invention, but cannot be interpreted as limiting the technical solution of the present invention.

[0034] Combination Figure 1-3A special-shaped steel structure combining a lotus leaf and a grid steel structure, comprising a central annular grid steel structure 1 and a central lotus leaf umbrella steel structure 2, wherein the central annular grid steel structure 1 is a cylindrical structure penetrating vertically and the cylinder wall is a grid steel structure, the top of the central annular grid steel structure 1 is provided with an annular connecting support steel beam 11, the central lotus leaf umbrella steel structure 2 comprises a central cylinder column section 21, a central cylinder column top ring beam 22, a plurality of supporting columns 23, a column main ring beam 24, a plurality of radial main beams 25, an annular support beam 26, a forked cantilever beam 27 and a cantilever ring beam 28, the central cylinder column section 21 is located on the inner side of the central annular grid steel structure 1, the central cylinder column section 21 is formed into a vertical cylinder shape by a plurality of annularly arranged upright poles, the central cylinder column top ring beam 22 is located at the top of the central cylinder column section 21, and the supporting columns 23 are located at the connecting support steel beam 11 top, the column main ring beam 24 is arranged in a ring shape at the top of the supporting column 23, and a number of radial main beams 25 are respectively extended in an arc shape from the top of the center tube column top ring beam 22 to the top of the supporting column 23 to form a lotus leaf shape, the highest point of the radial main beam 25 is located between the center tube column top ring beam 22 and the supporting column 23 in the horizontal direction, the annular support beam 26 is arranged between the radial main beams 25 to form a number of annular beams, the forked cantilever beam 27 is located outside the ring formed by the supporting column 23, the forked cantilever beam 27 is in a V shape with the vertex on the column main ring beam 24, the cantilever ring beam 28 is connected to the end of the forked cantilever beam 27 in a ring shape, and in the top view direction, the central annular grid steel structure 1 is elliptical, and the central column section 21 is located on the long axis of the ellipse of the central annular grid steel structure 1 and is spaced from the center point of the ellipse.

[0035] As a preferred solution of this embodiment, the radial main beam 25 between the column main ring beam 24 and the topmost annular support beam 26 is in a V-shaped structure with the apex on the annular support beam 26 .

[0036] As a preferred solution of this embodiment, the annular support beam 26 is undulating in the height direction.

[0037] As a preferred solution of this embodiment, the vertical poles of the central column section 21 form an ellipse in a top view.

[0038] As a preferred solution of this embodiment, the central cylindrical section 21 is shaped like a small waist with the thinnest part in the middle in the height direction.

[0039] As a preferred solution of this embodiment, the vertical poles of the central column section 21 are connected by connecting plates.

[0040] As a preferred solution of this embodiment, the central annular grid steel structure 1 includes a plurality of inclined columns 12 , and a plurality of inclined beams 13 are arranged between the inclined columns 12 .

[0041] As a preferred solution of this embodiment, the central annular grid steel structure 1 is shaped like a small waist with the thinnest part in the middle in the height direction.

[0042] As a preferred solution of this embodiment, the cantilever length of the top of the end of the central annular grid steel structure 1 farther from the central column section 21 is greater than the cantilever length of the top of the end of the central annular grid steel structure 1 closer to the central column section 21.

[0043] A construction method of a special-shaped steel structure combining a lotus leaf and a grid steel structure, comprising the following steps:

[0044] Step 1: construct the inclined columns 12 and inclined beams 13 of the central ring-shaped grid steel structure 1 in sections from bottom to top;

[0045] Step 2: construct the connecting support steel beam 11;

[0046] Step 3: construct the roof concrete structure in the plane of the connecting support steel beam 11, and hollow out the inner side of the connecting support steel beam 11 to form a skylight;

[0047] Step 4: construct the support columns 23 and the column main ring beam 24;

[0048] Step 5: construct the central cylinder column section 21 and the top ring beam 22 of the central cylinder column;

[0049] Step 6: construct the radial main beam 25 at the position closer to the central column section 21 of the support column 23, then hoist the adjacent radial main beams 25, and then hoist a section of the annular support beam 26 between the radial main beams 25, and repeat the hoisting of the radial main beams 25 and the annular support beams 26 to complete the hoisting of the radial main beams 25 and the annular support beams 26;

[0050] Step 7: Hoisting the bifurcated cantilever beam 27 and the cantilever ring beam 28, hoist the entire cantilever beam 27 and the cantilever ring beam 28 in sections in the annular direction to complete the construction.

[0051] The beneficial effects of the present invention are as follows: 1. The present application designs a steel structure shape of a stone emerging from a spring, which is applied to the comprehensive transportation transfer center of the airport. The central annular grid steel structure 1 of the vertically penetrating cylindrical structure and the cylindrical wall of the grid steel structure constitutes a "stone" shape, and the central lotus leaf umbrella steel structure 2 constitutes a "spring" shape. The central lotus leaf umbrella steel structure 2 includes a central cylinder column section 21, a top ring beam 22 of the central cylinder column, a plurality of supporting columns 23, a column main ring beam 24, a plurality of radial main beams 25, annular support beams 26, a bifurcated cantilever beam 27 and a cantilever ring beam 28, and the highest point of the radial main beam 25 is located between the top ring beam 22 of the central cylinder column and the supporting column 23 in the horizontal direction. The overall structure forms a unique shape of "spring coming out of stone", and the central annular grid steel structure 1 is elliptical, the central cylinder section 21 is located on the long axis of the ellipse of the central annular grid steel structure 1 and is spaced from the center point of the ellipse, forming an unconventional elliptical structure and an eccentric central lotus leaf umbrella steel structure 2 in terms of structural shape, which has a unique shape of special shape and is conducive to the stability and construction of the steel structure. In addition, the outer side of the central space bending and twisting grid steel structure can be poured with several layers of concrete platform slabs in the height direction. Since the structure of the application can achieve structural stability by itself, the construction concept of "separation of strength and mix" can be realized, reducing the impact of the cross-construction of the steel structure of the application and the surrounding slabs, killing two birds with one stone;

[0052] 2. The end of the radial main beam 25 is V-shaped and can be supported on two supporting columns 23, so the overall stability is relatively high;

[0053] 3. The undulating shape of the annular support beam 26 in the height direction not only further enhances the characteristics of the shape but also improves the stress condition of the structural stability and the overall stability.

[0054] 4. The vertical poles of the central column section 21 form an ellipse in the top view, and the central column section 21 is in the shape of a small waist with the thinnest part in the middle in the height direction. The vertical poles of the central column section 21 are connected by connecting plates, so that the central column section 21 has a unique and novel shape and high structural stability.

[0055] 5. The central ring-shaped grid steel structure 1 can adopt the structural form of inclined columns 12 and inclined beams 13, and the shape is closer to nature;

[0056] 6. In this modeling, the roof layer concrete structure is constructed in the plane of the connecting supporting steel beam 11, which separates the whole and can better reflect the macroscopic modeling. The construction steps are reasonable, the sections are reasonable, the sequence is reasonable, and safe production and stable progress can be achieved, ensuring the construction quality and safety.

[0057] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that a technician familiar with the technical field can think of within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention.

Claims

1. A special-shaped steel structure combining a lotus leaf and a grid steel structure, characterized in that: The invention comprises a central annular grid steel structure (1) and a central leaf-shaped steel structure (2). The central annular grid steel structure (1) is a vertically penetrating cylindrical structure and the cylindrical wall is a grid steel structure. The top of the central annular grid steel structure (1) is provided with an annular connecting support steel beam (11). The central leaf-shaped steel structure (2) comprises a central cylindrical column section (21), a central cylindrical column top ring beam (22), a plurality of supporting columns (23), a column main ring beam (24), a plurality of radial main beams (25), an annular support beam (26), a bifurcated cantilever beam (27) and a cantilever ring beam (28). The central cylindrical column section (21) is located inside the central annular grid steel structure (1). The central cylindrical column section (21) is formed into a vertical cylindrical shape by a plurality of annularly arranged vertical poles. The central cylindrical column top ring beam (22) is located at the top of the central cylindrical column section (21). The supporting columns (23) are located at the top of the connecting support steel beam (11). The main ring beam (24) is arranged in a ring shape at the top of the supporting column (23); a plurality of radial main beams (25) are respectively extended in an arc shape from the top of the ring beam (22) at the top of the central column to the top of the supporting column (23) to form a lotus leaf shape; the highest point of the radial main beam (25) is located between the ring beam (22) at the top of the central column and the supporting column (23) in the horizontal direction; the annular support beam (26) is arranged between the radial main beams (25) to form a plurality of annular beams; the bifurcated cantilever beam (27) is located outside the ring formed by the supporting column (23); the bifurcated cantilever beam (27) is in a V shape with its apex on the main ring beam (24) of the column; the cantilever ring beam (28) is connected to the end of the bifurcated cantilever beam (27) in a ring shape; in a top view direction, the central annular grid steel structure (1) is in an elliptical shape; the central column section (21) is located on the long axis of the ellipse of the central annular grid steel structure (1) and is spaced from the center point of the ellipse.

2. The special-shaped steel structure combining a lotus leaf and a grid steel structure according to claim 1, characterized in that: The radial main beam (25) between the column main ring beam (24) and the topmost annular support beam (26) is in a V-shaped structure with its apex on the annular support beam (26).

3. The special-shaped steel structure combining a lotus leaf and a grid steel structure according to claim 2, characterized in that: The annular support beam (26) is undulating in the height direction.

4. The special-shaped steel structure combining a lotus leaf and a grid steel structure according to claim 3, characterized in that: The vertical pole of the central cylindrical section (21) forms an ellipse in a top view.

5. The special-shaped steel structure combining a lotus leaf and a grid steel structure according to claim 4, characterized in that: The central cylindrical section (21) is in the shape of a small waist with the thinnest part in the middle in the height direction.

6. The special-shaped steel structure combining a lotus leaf and a grid steel structure according to claim 5, characterized in that: The vertical poles of the central column section (21) are connected via connecting plates.

7. The special-shaped steel structure combining a lotus leaf and a grid steel structure according to claim 1, characterized in that: The central annular grid steel structure (1) comprises a plurality of inclined columns (12), and a plurality of inclined beams (13) are arranged between the inclined columns (12).

8. The special-shaped steel structure combining a lotus leaf and a grid steel structure according to claim 7, characterized in that: The central annular grid steel structure (1) is shaped like a small waist in the height direction, with the thinnest part in the middle.

9. The special-shaped steel structure combining a lotus leaf and a grid steel structure according to claim 8, characterized in that: The cantilever length of the top of the end of the central annular grid steel structure (1) that is farther from the central column section (21) is greater than the cantilever length of the top of the end of the central annular grid steel structure (1) that is closer to the central column section (21).

10. A construction method of a special-shaped steel structure combining a lotus leaf and a grid steel structure as claimed in any one of claims 1 to 9, characterized in that: The following steps are included: Step 1: construct the inclined columns (12) and inclined beams (13) of the central ring-shaped grid steel structure (1) in sections from bottom to top; Step 2: construct the connecting support steel beam (11); Step 3: constructing a roof concrete structure in the plane of the connecting support steel beam (11), and hollowing out the inner side of the connecting support steel beam (11) to form a skylight; Step 4: constructing support columns (23) and column main ring beams (24); Step 5: construct the central cylinder column section (21) and the top ring beam (22) of the central cylinder column; Step 6: construct the radial main beam (25) at a position close to the central column section (21) of the support column (23), then hoist the adjacent radial main beam (25), and then hoist a section of the annular support beam (26) between the radial main beams (25), and repeat the hoisting of the radial main beam (25) and the annular support beam (26) to complete the hoisting of the radial main beam (25) and the annular support beam (26); Step 7: Hoisting the bifurcated cantilever beam (27) and the cantilever ring beam (28) in sections in the annular direction.

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